ih_b275-b414_354-364-384_424-444_2424-2444_manual

WORKSHOP MANUALOVER

INTERNATIONALHARVESTER

TRAKTOR

MODEL

B275-B414354-364-384

424-4442424-2444

www.maskinisten.netwww.classicmachinery.net

SHOP MANUAL

INTERNATIONAL HARVESTERSERIES B-275 -B-414-354-364-384-424-444-2424-2444

All tractors are powered by four cylinder , four cycle engines . The Series B-275 tractors are equippedwith a 144 cubic Inch displacement diesel engine while the Series B -414 Is available with either a 154cubic Inch displacement diesel engine or a 144 cubic Inch displacement gasoline engine . Series 364 and384 have a diesel 154 cubic inch displacement engine . Series 354 has a 144 cubic Inch displacementengine in both diesel and gasoline models . Series 424 and 2424 are available with either a 154 cubic Inchdisplacement diesel engine or a 146 cubic Inch displacement gasoline engine . Series 444 and 2444 areavailable with either a 154 cubic Inch displacement diesel engine or a 153 cubic Inch displacementgasoline engine . A dual range transmission is standard equipment on all tractors and provides eightforward and two reverse speeds . In addition , the Series 8-414 , 364, 384 , 424, 444 , 2424 and 2444 tractorshave available a forward and reverse transmission designed to work in conjunction with the main tractortransmission.

Engine serial number Is stamped on a pad on right side of engine crankcase . Tractor serial number Isstamped on a name plate on the right aide of the clutch housing.

INDEX (By Starting Paragraph)Series B-275,

B-414 , 354, 364 ,384 Diesel

Series 8414,354 Non -Diesel

Series 424,444, 2424 , 2444

Diesel

Series 424,444 , 2424, 2444

Non -DieselALTERNATOR , GENERATOR AND

REGULATOR ..................... 135 135 138 138BELT PULLEY ..................... 190 190 190 190BRAKES ........................... 179 179 179 179CARBURETOR ..................... .... 123 .... 125 aCLUTCH

Adjustment ....................... 144 144 150 150Remove and Reinstall . ............. 145 145 151 151

COOLING SYSTEMRadiator .......................... 129 129 130 130Thermostat ....................... 131 131 131 131Water Pump ..................... 132 132 133 134

DIESEL FUEL SYSTEMBleeding .......................... 91 .... 91 a

Injection Nozzles .................. 92 .... 92 ....Injection Pump Timing ............. 103, 104 .... 104Quick Checks ..................... 90 90 ....

DIFFERENTIAL .................... 173 173 173 173ELECTRICAL SYSTEM ............. 135 135 138 138ENGINE

Cam Followers .................... 52 52 52 52Camshaft and Bearings ............. 66 66 66 67Connecting Rods and Bearings ...... 77 77 77 78Crankshaft ........................ 79 79 79 81Cylinder Head ..................... 39 41 43 45Cylinder Sleeves .................. 69 69 69 ....Engine Removal ................... 35 36 37 38Flywheel ...... ........... 84 84 84 84Ignition Timing .................... .... 136, 137 .... 142Main Bearings ..................... 79 79 79 81Oil Pump. -- ................ - 85 85 85 85Pistons and Rings ................. 69 69 69 72Piston Pins ....................... 74 74 74 74Piston Removal ................... 68 68 68 68Rear Oil Seal ...................... 82 82 82 83Rocker Arms ...................... 53 53 53 53Timing Gear Cover ................ 56 57 58 59Timing Gears ..................... 60 60 60 64Valves and Seats .................. 47 47 47 47Valve Guides ...................... 48 49 48 50Valve Springs ..................... 51 51 51 51

2


INDEX CONT.Series B-275, Series 424, Series 424,

B-414, 354, 364 , Series B-414 , 444, 2424, 2444 444, 2424, 2444384 Diesel 354 Non -Diesel Diesel Non -Diesel

FINAL DRIVEAxle Shaft ....................... 176 176 176 176Bull Gears ...................... 177 177 177 177Bull Pinions. . .... ... ............ 178 178 178 178

FRONT SYSTEMAxle Main Member ................ 1 1 2 2Steering Knuckles. ................ 3 3 4 4Tie-Rod, Drag Link and Toe-In ..... 5 5 5 5

GOVERNOR (DIESEL)Pneumatic ....................... 105 .... .... ....Mechanical ......... ............. 106 .... 106

GOVERNOR (NON-DIESEL) ......... .... 86 .... 88HYDRAULIC LIFT SYSTEMControl Valve. ... _ .............. 201, 206 206 206 206Lubrication and Bleeding. .... ..... 192 192 192 192Pump . ........................... 197,198 198 198 200Reservoir and Components ........ 207, 209 209 209 209Testing .......................... 195,196 196 196 196Troubleshooting ................... 193,194 194 194 194

POWER STEERINGControl Valve ..................... 24 24 32 32Flow Divider Valve ................ 33 33 34 34Hand Pump ....................... .... .... 30 30Relief Valve ................. .... 17 17 .... ....Steering Cylinder .................. 24 24 28 28

POWER TAKE-OFF.. . ..... ....... 182, 187 182, 187 182 182REAR AXLE ...................... 176 176 176 176REVERSING TRANSMISSIONR&R and Overhaul ............... 167 167 167 167

STEERING GEARAdjustment ..... ............... 6 6 .... ....Overhaul ......................... 8,9 8,9 11 11

TRANSMISSIONCountershaft.... .......... 165 165 165 165Input Shaft .......... ...... 161 161 161 161Reverse Idler ..................... 166 166 166 166Shifter Rails and Forks ............ 158 158 158 158Spline Shaft ....................... 163 163 163 163Top Cover ...................... 158,159 159 159 159

CONDENSED SERVICE DATA

GENERAL

Series 424,2424,444,

Series 2444 , B-414 , Series Series SeriesB-275 , 354 364 , 384 B-14, 354 424, 2424 444, 2444Diesel Diesel Non-Diesel Non-Diesel Non -Diesel

Engine Make .................... Own Own Own Own OwnNumber of Cylinders ................ 4 4 4 4 4Bore-Inches .. . ........ . ......... 3-3/8 31/2 3-3/8 3-3/8 3-3/8Stroke-Inches .................. 4 4 4 4-1/16 44dDisplacement-Cubic Inches ........ 144 154 144 146 153Compression Ratio . .................. 19.3:1 (B-275 ) 23:1 6.3:1 7.6:1 7.7:1

20.1:1 (354)Compression Pressure at 200 rpm

Cranking Speed ................... 330-335 445-470 80-105 180 _ 180Cylinder Sleeves Wet or Dry? ........ Wet Wet Wet None NoneForward Speeds-Number of ......... 8 8 8 8 8Main Bearings-Number of ........... 5 5 5 3 3Alternator, Generator and

Regulator Make ................... Lucas Delco-Remy (1) Lucas Delco-Remy Delco-RemyStarter Make ....................... Lucas Delco-Remy (1) Lucas Delco-Remy Delco-RemyDistributor Make .................... .... .... Lucas (2) IH IH( 1) B414, 364 and 384 Lucas . (2) 354 Delco-Remy.

3


CONDENSED SERVICE DATA CONT.Series 424,

SeriesB-275, 354

Diesel

2424,444,2444, B-414,

364, 384Diesel

TUNE-UPFiring Order. . ...................... 134-2 13-0-2Valve Tappet Gap (Hot) .............. .020 .020Valve Face and Seat Angle.......... 450 450Breaker Contact Gap ................. .... ....Distributor Timing-Retard .......... .... ....Distributor Timing-Advanced.. . ..... .... ....Timing Mark Location ............... Crankshaft Flywheel

Injection Pump Make ................PulleyC.A.V. C.A.V.

Injection Pump Model ... ............ BPE or DPA DPAInjection Pump Timing-Static ...... 20° BTDC 16° BTDCInjection Nozzle Make. . ... ......... C.A.V. C.A.V.Injection Nozzle Model. .............. BDN8S1(3) BDN8S1(3)Injection Nozzle Pop Pressure ........ See Par. 95 See Par. 95Spark Plug Electrode Gap........... .... ....Carburetor Make ................. .. .... ....Carburetor Model ........ _ ..... .. .... ....Engine High Idle Rpm ............. See SeeEngine Rated Rpm ................. Paragraph ParagraphEngine Low Idle Rpm ............ .. 113 113(3) 354, 364 and 384-BDN4SD.

SIZES -CAPACITIES -CLEARANCESCrankshaft Main Journal Diameter .... 2.124 -2.125 2 .124-2.125Crankshaft Rod Journal Diameter ..... 1.7495-1.750 1.7495-1.750Piston Pin Diameter ................. 1.1021-1.1024 1.1021-1.1024Valve Stem Diameter ................ 0.341-0.342 0.341-0.342Rocker Arm Shaft Diameter .......... 0.748-0.749 0.748-0.749Camshaft Journal Diameter, No. 1 ..... 1.811-1 .812 1.811-1.812Camshaft Journal Diameter , No. 2..... 1.577-1.578 1.577-1.578Camshaft Journal Diameter, No. 3..... 1. 499-1 .500 1 .499-1.500Main Bearings-Diametral Clearance .. 0.002-0 .004 0.002-0.004Rod Bearings-Diametral Clearance ... 0.001-0.0029 0.001-0.0029Camshaft Bearings-DiametralClearance.... 0.0015-0.0035

Piston Skirt Clearance ............... 0.0031-0.0039(4)Crankshaft End Play ................ 0.004-0.008Camshaft End Play .................. 0.008-0.017Cooling System-Quarts. ............. 10.8Crankcase Oil-Quarts ............ 8(6)Transmission and Differential-Quarts ........................... 20

Hydraulic Reservoir-Gallons......... 3

Series Series SeriesB-414 , 354 424, 2424 444, 2444Non -Diesel Non-Diesel Non-Diesel

134-2 1-3-4-2 1-34-2.020 -In . 0.014 -Ex. 0.020-450 450 4500.014 0 .020 0.020

50 BTDC TDC TDC390 BTDC 17° BTDC 17° BTDC

Crankshaft Pulley

0.024 0 .023 0.023Zenith Marvel Schebler Marvel Schebler

VNN or VNP TSX896 T5X8962200 2200 22002000 2000 2000500-525 425 425

2.124 -2.125 2 .6235 -2.6245 2 .6235 -2.62451.7495-1.750 2.059-2.060 2.059-2.060

1.1021-1.1024 0.8591-0.8593 0.8591-0.85930.341-0.342 0.3405-0.3415 0.3405-0.34150.748-0.749 0.748-0.749 0.748-0.7491.811-1.812 1.811-1.812 1.811-1.8121.577-1.578 1.577-1.578 1.577-1.5781.499-1.500 1.499-1.500 1.499-1.5000.002-0.004 0.0009-0.0039 0.009-0.00390.001-0.0029 0.0009-0.0039 0.0009-0.0039

0.0015-0.0035 0.0015-0.0035 0.0009-0.0054 0.0009-0.00540.0031-0.0039 0.0031-0.0039 0.001-0.002 0.001-0.0020.004-0.008 0.004-0.008 0.004-0.010 0.004-0.0100.008-0.017 0.008-0.017 0.003-0.012 0.003-0.01210.8(5) 10.8(5) 13 138.3 8(7) 52/2 52/2

20 20 20 203 3 3 3

(7) B-014-5.(4) B-2751.0048-0.0056. (5) B414-9.5. (6) B-275.4.

TIGHTENING TORQUES-FT.-LBS.Cylinder Head ....................... 75-80(8)Main Bearing Bolts ..................Connecting Rod Bolts ................ 40115(9)(8) B-275-70-75. (9) 8-275-3035.

FRONT SYSTEM

AXLE MAIN MEMBER

Series B-275-B -414-354 -364-3841. The axle main member pivots on

pin (5-Fig. 1 or 2) which is retained infront axle support (7) by a groove pin

75-80 75-80 80-90 80-90See Paragraphs 70 and 80

40-45 40-45 43-49 43119

or bolt (9). Diameter of pivot pin is1.115-1.116. Press new bushing (4) intoplace and ream to 1.118-1.120. Normaloperating clearance of pivot pin in thebushing is 0.002-0.005.

To renew the axle pivot pin andbushings on Series B-275 and B-014,raise hood and remove the cotter pinsfrom rear of stay rod slides, thendisconnect headlight wires from con-

nectors located on forward side of frontsupport. Unbolt and remove hood,being careful not to lose the two pivotspacers.

On Series 354, 364 and 384, removehood, grille, grille support and frontend weight support.

On models equipped with stay rodattachment, unbolt and remove stayrod ball socket cap (3-Fig. 3). Do not

,r

S

4


INTERNATIONAL HARVESTER

Fig. 3-Power steering stay rod attachment.

1. Stay rod 3. Socket cap2. Loa plate 4. Shim

Fig. 1-Exploded view ofSeries B - 275 adjustablefront axle and componentparts . Bushings (1 and 4)are pro -sized. Shims (10-Fig. 2) are also used with

this axle.

1. Knuckle bushings2. Axle clamps3. Grease fitting4. Pivot bushings5. Pivot the6. Axle main member7. Front support8 Axle extension9. Groove pin

Fig. 2-Exploded view ofSeries B-414 , 354, 364 and384 adjustable front axle

and component parts.

1. Knuckle bushings3. Grease fitting4. Pivot bushings5. Pivot pin6. Axle main member7. Front support8. Axle extension5. Groove pin

10. Shims

Fig. 4-Exploded view ofSeries 424 , 444, 2424 and2444 standard adjustablefront axle and component

parts.1. Steering knuckle2. Woodruff key3. Felt washer4. Thrust bearing5. Bushing6. Axle extension8. Steering arm R.H.9 Tie rod asst'. (2 used)10. Ball so ketll. Ball12. Shim3. Cap14. Lock plate3s. Camp17. Pivot pint8. Axle main member,19. Pivot bushing20. Lower bolster22. 'Vie rod extension24. Tube25. Clamp26, Tie rod end27. Steering arm LH.28. Spacer

Paragraph 2

damage shim (or shims) 141 On)ivc 1,ball socket and socket cap.

On all models, disconnect drag linkor power steering cylinder from leftsteering arm, then drive out the groovepin or bolt (9-Fig. 1 or 2) whichretains axle pivot pin (5) in frontsupport (7). Jack up tractor enough totake the weight off the front axle,drive pivot pin forward out of frontsupport and remove the axle andwheels assembly. Do not damage theshim (or shims ) which are between axlemain member and front support. Shimsare available in thicknesses of 0.002,0.0032, 0,0048, 0.010, 0.028 and 0.u36.Any further disassembly is evident.

Series 424 -444-2424-24442. The axle main member (18 Fig. 4,

5 and 6) pivots on pin (17) which isretained in lower holster (20) by a capscrew. The pre-sized pivot bushing (191is pressed into position and can beremoved after the axle main memberhas been removed from tractor . Normalclearance between pivot pin and bush-ing is 0.008-0.014.

To remove the axle main memberassembly, support front of tractorusing a jack under the clutch housing.Disconnect tie-rods from steering armat center of tractor. On modelsequipped with standard axle (Fig. 4) orheavy duty axle ( Fig. 6) and withpower steering, disconnect hydrauliccylinders from axle main member. Onmodels equipped with narrow treadaxle (Fig. 5) and with power steering,unpin anchor end of cylinder and unboltand remove lower cylinder arm (33).Remove cylinder or secure with wireon left side of tractor. Then on allmodels, adjust the height of the jack to

27

2526 -^ /

'

S

--^®6

24--x/

e p43

15

5


Paragraphs 3-5

remove weight from front tires. Re-move pivot pin retaining cap screw anddrive out pivot pin. Unbolt and removestay rod ball socket cap (13 ). Raisefront of tractor and roll front axleassembly forward from under tractor.

STEERING KNUCKLES

Series B-275-B -414-354 -364-3843. The steering knuckles can be

removed from the axle extensions aftersteering arms and wheel assemblieshave been removed.

After being pressed into place, reaminside diameter of new knuckle bush-ings ( 1-Fig . 1 or 2 ) to 1.359 -1.360.Outside shaft diameter of new steeringknuckle ( 8 or 11-Fig . 7) is 1 .357-1.358.Operating clearance between knuckleshafts and bushings is 0.001-0 .003. Usea piloted drift when installing bushingsand install same with outer ends flushwith bore.

Series 424 -444-2424-24444. To remove the steering knuckles

(1-Fig. 4 or 5) from tractors equippedwith adjustable front axle, first supportfront of tractor and remove front wheelassemblies . Disconnect tie rods (9) fromsteering arms ( 8 and 27 ) and removethe arms from steering knuckles.

0 3233

"INTERNATIONAL HARVESTER

Remove Woodruff keys and lowersteering knuckles out of axle.

The procedure for removing steeringknuckles (1-Fig. 6) from the non-adjustable heavy duty axle is the sameas the adjustable axle with the follow-ing exceptions : The steering arms andsteering knuckles are splined instead ofhaving Woodruff keys . Snap rings (7)must also be removed before steeringknuckles can be removed from axle.

Steering knuckle bushings (5-Fig. 4,5 and 6) should be installed with aclosely fitting mandrel and sized afterinstallation , if necessary , to provide arecommended clearance of 0.002-0.004

Fig. 6-Exploded view ofSeries 424, 444 , 2424 and2444 heavy duty non-ad-justable front axle and

component parts.

1. Steering knuckle3. Felt washer4. Thrust bearing5. Bushing7. Snap rung8. Steering arm R.H.9. Tie rod ssay.

10. Bell socket11. Ball12. Shim13. Cap14. Lock plateI7. Pivot pin18. Axle main member19. Pivot bushing20. Lower bolster24. Tube25. Clamp26. Tie rod end27. Steering arm L.H.28. Spacer

Fig. 7-Exploded viewof Series B-275, 8-414,354, 364 and 384 steeringknuckles, steering arms,tie rod and drag link usedon models with no powersteering. Models withpower steering are similar.

Fig. 5-Exploded view of Series 424, 444,2 D2424 and 2444 narrow tread adjustable front . rag link3. Grease fitting

axle and component parts. 4. L.H. steering arm5. R.H. steering arm

1. Steering knuckle 6 Tie rod2. Woodruff key 18. Axle main member

.7. Thrust bearing

3. Felt washer 19. Pivot bushing 8. R.H. steering knuckle4. Thrust hearing M. Lower bolster 11. L.H. steering knuckle5. Bushing 22 . Tie rod extension 18. Dust shield6. Axle extension 24. Tube 14. Felt washer8. Steering arm R . H. 25. Clamp 15. Bearing spacer9. Tie rod saay. 26. Tie rod end 18. Oil seal10. Ball socket 27. Steering arm L.H. 17. Bearing cone11. Ball 28. Spacer 18. Bearing cup12. Shim 29. Rear bushing 19. Bearing cup13. Cap 30. Cylinder arm (upper) W. Bearing cone14. Lock plate 31. Pivot Pin lock 21. Retainer washer15. Axle clamp 32. Front bushing17. Pivot pin 33 Cylinder arm ( lower)

30 iA_

for the steering knuckle.When installing thrust bearings (4)

on steering knuckles , make certain thatopen end of outer race is facing down-ward.

TIE-ROD , DRAG LINKAND TOE-IN

All Models5. On early B-275 models the tie-rod

and drag link. ends are of the non-adjustable type and excessive wear iscorrected by renewal of the completetie-rod and/or drag link. On later B-275

ser

We

a

6



and all other models, component partsare available and can be purchasedseparately.

On Models B-275 and B-414, correcttoe-in of 1/4 to 3/8 inch is obtained byloosening the tie-rod clamps and rota-ting tie-rod either way as required. Ifnecessary, adjust the drag link in asimilar manner until there is equalcontact at the stops when front wheelsare turned full left and full right.

The correct toe-in for Models 354,364, 414 , 2424 and 2444 is 3/16 to 5/16inch and 0 to 1/16 inch for Model 384.Both tie -rods must be adjusted equallyso that full left and full right turningradius of the tractor will be the same.

from drop (Pitman) arm, then unboltand remove steering gear assemblyfrom tractor.

With assembly removed as outlined,vary shims under worm shaft end cap(15-Fig. 8) to provide zero end play ofthe worm shaft. Shims are available inthicknesses of 0.0024, 0.005 and 0.010.

7. ADJUST ROCKER SHAFT. Steer-ing gear assembly need not be removedto adjust rocker end play. Remove sidecover (1-Fig. 8) and vary shims (2)until -a slight drag can be felt whensteering gear passes through its mid(straight ahead) position. Disconnectdrag link from drop (Pitman) arm whenmaking this adjustment. Shims areavailable in thicknesses of 0.0024, 0.005and 0.010.

STEERING GEAR

Series B-275-8414The cam and lever steering gear

assembly is provided with shim adjust-ments to compensate for wear of thesteering worm (cam) shaft and therocker shaft. The complete assembly isdoweled and bolted to the clutchhousing.

6. ADJUST WORM SHAFT. Toadjust the steering worm shaft it isrecommended that the unit be removedfrom tractor as follows:

Unlatch and raise hood, then removethe battery cover plate. Remove bat-tery hold-down, disconnect batterycables and lift out batteries.

NOTE: Removal of left battery will besimplified if the hold-down studs areunscrewed from battery tray. It will alsobe easier to handle the fuel tank if thefuel is drained at this time.

Remove knob from fuel shut-off rod,then unbolt and remove the lowerinstrument panel. Remove filler panelfrom center of upper instrument panelthen unbolt upper instrument paneland lay same on right hand foot plate.

NOTE : It is not necessary to discon-nect the oil pressure line from gageproviding care is exercised.

Remove steering wheel and if forceis required, use a puller. Do not use ahammer. Disconnect link from lowerend of hand throttle lever, then unboltbracket and friction disc assembly fromupper end of steering shaft tube andpull hand throttle lever from fuel tanktunnel. Straighten tabs of lock plates,then unbolt tank and move same upand over steering column. Disconnectfuel shut-off rod at forward end andremove. Remove the cross shaft to bell-crank control rod. Disconnect drag link

8. OVERHAUL. To overhaul thesteering gear assembly, first removesame as outlined in paragraph 6.

With unit removed, proceed as fol-lows: Remove drop (Pitman) arm (6-Fig. 8) by using a suitable puller.Remove side cover (1) and be carefulnot to lose or damage shims (2). Rockershaft (3) can now be removed.

Fig. 8-Exploded view ofSeries B - 275 and B-414steering gear assemblyshowing the componentparts and their relative

positions.

). Side cover2. Shim 10.0024. 0.005.

0.010)3. Rocker shaft4. Bushings5. Oil seal6. Drop Ipitman) arm7. Felt bushing6. Housing & tube9. Filler plug10. Bearing cup11. Bearing1s. Cam ( worm) shaft14. Shim (0.0024 . 0.005.

0.010)15. End cover

Paragraphs 6-8

NOTE: Do not drive on drop (Pitman)arm to remove it from rocker shaft asdamage to internal parts could result. Ifa suitable puller is not available,remove side cover first, then driverocker shaft from drop arm using theretaining nut, or some other means .,.prevent damage to ille rocnei snot,threads.

Remove worm shaft end cover (15)and be careful not to damage or loseshims (14). Withdraw worm shaft (13)and bearing assemblies (10 and 11).Balance of disassembly is evident andwill be dictated by the repair needed.

If new bushings (4) are installed,align ream same to an inside diameterof 1.2495-1.2510. If felt bushing (7) isrenewed, it is recommended that thenew felt bushings be soaked in warmgraphite for 12 hours before installa-tion. Oil seal (5) is installed with Ill,facing toward inside.

Reassemble by reversing the dis-assembly procedure. Adjust worm shaftto zero end play by varying shims (141located under end cap (15). Adjustrocker shaft (3) by varying shims (2Iunder side cover (1) until a slight drug

11

145

7


Paragraphs 9-11

is felt on steering wheel when gearpasses through the straight ahead posi-tion. All shims are available in thick-nesses of 0.0024, 0.005 and 0.010. Usepaper gaskets on end cover (15) andside cover (1) when assembling. Torquedrop arm retaining nut to 150 ft. lbs.

Series 354 -364-384

9. R&R AND OVERHAUL. Toremove steering gear assembly, removehood, battery and battery carrier. Ondiesel tractors remove leak-off pipe andshut-off lever. Close shut-off tap anddisconnect fuel pipe and sender unitcable, then unbolt and remove fueltank. Remove steering wheel, unboltinstrument panel and support fromsteering gear assembly, disconnect footaccelerator and necessary wires, liftunit up and set to one side.

NOTE : It is not necessary to discon-nect oil pressure line from gageproviding care Is exercised.

Disconnect drag link from drop(Pitman) arm, then unbolt and removesteering gear assembly from tractor.With unit removed proceed as follows:Punch mating marks on the drop armand rockershaft to aid assembly. Re-move drop arm (13-Fig. 9) by usingsuitable puller, then remove side plate(16). Rockershaft (14) can now beremoved. Remove the tube assembly(2) and being careful not to damage orlose shims (5). remove wormshaft (7)and bearing assembly.

After being pressed into place theinside diameter of new rocker shaftbushings (10-Fig. 9) is 1 .3748-1.3758.Oil seal (11) is installed with lip facingtoward inside.

Reassemble by reversing the disas-sembly procedure. Adjust worm shaftto zero end play by varying shims (5)located under tube assembly (2).

NOTE : Bearing must not be pre-loaded.

Adjust rockershaft (14) by turningthrust screw (18) in side cover (16)until a slight drag is felt on steeringwheel when gear passes through thestraight ahead position. Torque droparm retaining nut to 150 ft.-lbs.

Series 424-444-2424-2444The manual steering worm and worm

wheel are located in the steering gearhousing which is bolted to the frontface of the engine. The center steeringarm is keyed to the lower portion ofthe worm wheel shaft and the axlesupport (lower bolster) is retained tothe steering gear housing by four capscrews. The manual steering unit isnon-adjustable.,

INTERNATIONAL HARVESTER10. REMOVE AND REINSTALL.

The steering gear housing, lowerbolster and front axle assembly can beremoved with radiator installed; how-ever, some mechanics prefer to removethe radiator.

To remove steering gear housingwith radiator attached, proceed as fol-lows: Drain cooling system, removehood and disconnect upper and lowerradiator hoses. Disconnect the head-light wires and unbolt the radiatorbrace and fan shroud from radiator.Drive roll pin from forward yoke ofsteering shaft universal and removecap screws from front steering, shaftsupport. Drive front universal fromsteering worm shaft. Place wood blocksbetween steering gear housing and axleto prevent tipping. Using a suitablejack under the clutch housing raisefront of tractor to remove most of theweight from the front tires. Unbolt thestay rod bracket from clutch housingthe steering gear housing from front ofengine . Raise engine until crankshaftpulley will clear steering gear housing,then roll complete front end assemblyfrom tractor.

11. OVERHAUL. The steering gearcan be overhauled without removingthe assembly from tractor.

To remove the steering worm, pro-ceed as follows: Remove hood, grille,side panels and grille housing and then,drain steering gear housing. Disconnect

Fig. 9-Exploded view ofSeries 354 , 364 and 384steering gear assemblyshowing the componentparts and their relative

positions.

1. Bushing assy.2. Tube any.3. Bushing4. Oil level plug5. Shims (0.0024. 0.m5 &

0.010)6. Bearing any.7. Shaft easy.8. Bearing any.9. Housing10. Bushingsit. Seal12. Ringi 3. Drop (pitman) arm4. Rocker shaft15. Gasket16. Side cover17. Lockout18. Thrust screw

the steering shaft front universal fromworm shaft and the steering shaft frontsupport from the fuel tank bracket.Drive universal from worm shaft andremove the Woodruff key. Remove thesteering worm retainer (5-Fig . 10) andturn worm shaft forward out ofhousing.

To remove ball bearing (7), removecotter pin and nut and bump wormshaft out of bearing. When reinstallingthe bearing on worm shaft, tighten nutto a torque of 75-120 ft.-lbs. Do notback off nut to below 75 ft.lbs. toinstall cotter pin . Worm shaft bushing(11) and oil seal (12) can be renewed atthis time. If needle bearing (10) isbeing renewed, it must be installed tothe dimension shown in Fig. 11.

To remove the steering worm wheeland shaft assembly, proceed as follows:Disconnect the tie -rods from centersteering arm and unbolt stay rodbracket from clutch housing . Place ajack under clutch housing to supportfront of tractor . Remove axle pivot pin,raise front of tractor and roll the frontaxle assembly forward . Unbolt andremove lower bolster from steeringgear housing . Remove the cap screwsretaining the worm wheel cage (21-Fig. 10) to steering gear housing andremove the worm wheel and shaftassembly. Remove center steering arm(23) and withdraw worm wheel andshaft ( 18). Bushing and oil seal can berenewed at this time . Oil seal is

a

S

als

8



installed with lip of same facing towardinside of steering housing. When rein-stalling center steering arm, clamp thearm in a vise and tighten the retainingnut (24) to a torque of 200-250 ft.-lbs.If, when tightening the steering armretaining nut, a castellation of the nutdoes not align with the cotter pin holdat some point between the specified

install nudlo bearingto dimension 'hean

Fig. 11-When renewing needle bearing inSeries 424 or 444 mechanical steering gearhousing, install the bearing to dimension

shown.

Fig. 10-Exploded view ofmechanical steering gearassembly used on Series

424 and 444.

1 near steering shah2. near shaft support3. Pedestal4 Rear steering ialnt

Steering wormretainer

6 Not7. Ball hearing8. Worn, shaft9 Steering gear

housing10. Needle bearingi I. Bushing2. Oil seal

N . Front steering joint. Center steering joint

15. Shim (0.008)6. Adapteri7: Shim (0.021 is 0d33)18. Worm wheel19. Gasket20. Bushing21. Cage22. Oil meal23. Center steering a rm24. Not

200-250 ft.-tbs. torque, continue totighten nut. Do not backoff (loosen)nut to obtain alignment.

When reinstalling the worm wheelassembly, be sure large diameter ofadater (16) is on top side. Install shims(15 and 17) as required to removeexcessive end play of worm wheel andshaft assembly (18).

POWER STEERING

Series B-414 -354-364-38412. The power steering system used

on B-414 prior to serial number 21196is comprised of the steering gear

Fig. 12- View showinggeneral arrangement ofearly Series B - 474 power

steering components.

1. Reaction bracket2 Cylinder & valve assy-3. Drag link4. Connecting link5. Banjo6. Banjo bolt7. HoseS. Hos9. Flow control valve10. Suction line11. Hydraulic pump12. Pressure line13. Adapter14. Shield15. Rubber insert

Paragraphs 12-13

assembly, a flow control valve and a. power steering cylinder and control

valve assembly . See Fig. 12 for aschematic view showing the general

arrangement of the component parts.Pressurized oil for the operation of thepower steering system is furnished bytiter smile engine driven pump ,vh„llsupplies the hydraulic lilt system.

Late production B-414 tractors (serialnumber 21196 and up ) and all 354, 364and 384 tractors are equipped with adual stage pump and a relief vulvablock. Refer to Fig. 13. Flow convol(divider) valve is not used on tLasystem.

For information pertaining to thesteering gear assembly , which is thesame as that used on models with nopower steering , refer to paragraphs 6through 9.

Series 424-444 -2424-244413. A full time (Hydrostatic) power

steering system is used on this series.Refer to Figs. 14 and 15 for aschematic view showing the generallayout of components and tubing forthe system.

NOTE: The maintenance of absolutecleanliness of all parts is of utmostimportance in the operation and ser.vicing of the hydraulic power steeringsystem . Of equal importance is theavoidance of nicks or burrs on any ofthe working parts.

The power steering system is com-posed of the following components: Anengine driven gear type pump, a flowdivider valve, a spool type directionalcontrol valve, a gerotor type pump onthe steering wheel shaft and two ramtype single acting steering cylinders onmodels equipped with the standardaxle (Fig. 4) or the heavy duty axle(Fig. 6) and one double acting cylinderon models equipped with narrow treadfront axle (Fig. 5).

9


Paragraphs 14-16

LUBRICATION AND BLEEDING

Series B-414 -424-444-2424-2444-354-364-384

14. The hydraulic lift housing servesas the fluid reservoir for both thepower steering system and the hydrau-lic lift system. Capacity of the reservoiris 3.0 gallons. Recommended fluid is IH"Hy-Tran" fluid.

To bleed the power steering systemon B-414, 354, 364 and 384 tractors, fillreservoir to bottom of filler hole, startengine and cycle the steering systemfrom lock to lock position until all air isbled from system. Recheck fluid levelin reservoir and add fluid as required.

On Models 424, 444, 2424 and 2444,fill reservoir to proper level and then,start engine and run at low idle speed.Rotate steering wheel (hand pump) asrapidly as possible in order to activatethe control valve and continue to rotatethe steering wheel until the frontwheels reach the stop in the directionin which the steering wheel is beingturned. Now quickly reverse the direc-tion of steering wheel and follow sameprocedure until front wheels reach stopin opposite direction. Continue to turnfront wheels from lock to lock untilsteering wheel has no wheel spin (freewheeling) and has a solid feel with noskips or sponginess. Check and addfluid to reservoir, if necessary.

TROUBLESHOOTING

Series B-414 .354-364-38415. Some of the troubles that may

arise in the operation of the powersteering system and their possiblecauses are given as follows:

1. Loss of Power Assist.a. Fluid level low.b. Connections loose or damaged.c. Relief valve sticking.d. Power cylinder internal parts

worn.e. Control valve sticking.f. Low pump output.

2. Binding.a. Power cylinder internal parts

worn.b. Ball pin binding.c. Control valve sticking.d. Worn ball pin cups.e. Loose locating sleeve.

3. Heavy Steering.a. Relief valve sticking.b. Power cylinder internal parts

worn.c. Control valve sticking.d. Worn ball pin cups.e. Loose locating sleeve.f. Low pump output.

4. Noisy Operation.a. Fluid level low.


b. Relief valve sticking.c. Control valve sticking.

5. Steering Chatter.a. Worn piston rod ball cups.b. Loose reaction bracket.

Series 424-444-2424-244416. The following list shows some of

C

the troubles, and their possible causes,which may occur in the operation of theHydrostatic steering system.

1. No Power Steering or SteersSlowly.a. Excessive load on front wheels

and/or air pressure low in fronttires.

R 91 Cylinder

Relief valveassembly

0 0 Suction line -Rear

Reservoir

Pressure lineto hitch

S Deal hydraulicpump asse mbly

Pressure hereto steering

Fig. 13-View showing general arrangement of power steering components used on all Series354, 364 , 384 and Series B-414 S/N 21196 and later . On tractors equipped with P92 cylinder,

supply and return hoses are connected to cylinder In reverse of connections shown.

49

Fig. 14-Schematic view showing the general arrangement of the power steering systemcomponents of Series 424, 444, 2424 and 2444 used with front axles shown In Figs . 4 and 8.

5. Hand pump 49. Flow divider valve85. Steering cylinder 51. Control (pilot) valve

Fig. 15-Schematic viewshowing the general ar-rangement of the powera testing system compo-nents used on Series424, 444, 2424 and 2444equipped with the narrowtread front axle shown in

Fig. S.

5. Hand pump35. Steering cylinder49. Flow divider valve51. Control (pilot) valve

w

10



b. Steering cylinder faulty.c. Faulty commutator in hand

pump.d. Flow divider valve spool stick-

ing or leaking excessively.e. Control (pilot) valve spool stick-

ing.2. Will Not Steer Manually.

a. Excessive load on front wheelsand/or air pressure low in fronttires.

b. Pumping element in hand pumpfaulty.

c. Steering cylinder faulty or dam-aged.

d. Pressure check valve leaking.e. Control (pilot) valve spool bind-

ing or centering spring broken.3. Hard Steering Through Complete

Cycle.a. Low pressure from supply

pump.It. Internal or external leakage.c. Line between hand pump and

control (pilot) valve obstructed.d. Faulty steering cylinder.e. Excessive load on front wheels

and/or air pressure low in fronttires.

4. Momentary Hard or Lumpy Steer-ing.a. Air in power steering circuit.b. Control (pilot) valve sticking.

5. Shimmy.a. Control (pilot) valve spring

weak or broken.b. Control (pilot) valve spring

washers bent, worn or broken.

steering circuit can be made as follows:Connect a pressure gage, capable ofregistering at least 3000 psi, in serieswith the pressure line running to thepower steering cylinder. Run engineand cycle steering system until fluid isat operating temperature, advance theengine speed to 2000 rpm, turn frontwheels against either stop, continue toapply turning effort to steering wheeland observe the pressure gage readingwhich should be 900-1100 psi.

If pressure is as stated, hydraulicpump and relief valve can be consideredsatisfactory and any trouble is locatedin the power steering cylinder, controlvalve or connections.

If pressure is higher than stated,relief valve is probably stuck in theclosed position and should be removedand cleaned or renewed. If pressure islower than specified, remove andinspect relief valve assembly (items 6through 10-Fig. 16 or items 13through 19-Fig. 17). Spring (8-Fig.16) should have a free length of 1.250inches and test 21 lbs. when com-pressed to a length of 1.087 inches.Plug (6), spring (8), ball (9) and sleeve(10) are catalogued separately . Spring(15-Fig. 17) should have a free lengthof 2.250 inches and should test 47.5 lbs.when compressed to a lengh of 2.012inches. If servicing the relief valve doesnot correct the pressure reading,overhaul hydraulic pump as outlined inparagraph 198 or 199.

SYSTEM OPERATINGPRESSURE

Series B-414 -354-364-38417. A pressure test of the power

Series 424-444 -2424-244418. To check power steering opera-

ting pressure, refer to paragraph 34which gives the method of checking theflow divider relief valve pressure.

Fig. 16-Exploded view ofearly Series B-414 flowcontrol and relief valveassembly used with single

stage pump.

I. Snap ring2. Plug3. ring4, Spring5. Plow control valve6. Plug & pin7. Seal washer

9. Relief valve ball10. Valve guideII. Valve body & tubes

ae y.12. Plug

Paragraphs 17-22

POWER STEERINGOPERATIONAL TESTS

Series 424 -444-2424-244419. The following tests are valid only

when the power steering system iscompletely void of any air. If neces-sary, bleed system as outlined in para-graph 14 before performing any opera-tional tests.

20. MANUAL PUMP. With enginedriven pump inoperative ( engine notrunning ), attempt to steer manually inboth directions.

NOTE: Manual steering with enginedriven pump not running will requirehigh steering effort. It manual steeringcan be accomplished with engine drivenpump inoperative, it can be assumedthat the manual pump will operatesatisfactorily with the engine drivenpump operating.

Refer also to paragraph 22 for infor-mation regarding steering wheel (man-ual pump) slip.

21. CONTROL (PILOT) VALVE.Attempt to steer manually ( engine notrunning). Manual steering will requirehigh steering effort but if steering canbe accomplished , control (pilot) valve isworking.

No steering can be accomplished ifcontrol valve is stuck on center. Acontrol valve stuck off center will allowsteering in one direction only.

22. STEERING WHEEL SLIP TEST.Steering wheel slip is the tern) used todescribe the inability of the steeringwheel to hold a given positiur: wittuutfurther steering movement . Wheel slipis generally due to leakage, eitherinternal or external, or a faulty handpump , steering cylinder or control(pilot ) valve. Some steering wheel slip,with hydraulic fluid at operating tem-perature , is normal and permissible. Amaximum of three revolutions per min-

Fig. 17-Exploded view of Series 5-414, l54,364 and 384 power steering elier valve

assembly used with dual stage pump.

13. Spring housing 17 . Relief valve ball14. "0" ring 18 . Valve seat15. Spring 19. Washer16. Ball rider 20. Relief valve block

11


Paragraphs 23-25

ute is acceptable . By using the steeringwheel slip test and a process ofelimination, a faulty unit in the powersteering system can be located.

However, before making a steeringwheel slip test to locate faulty compo-nents, it is imperative that the com-plete power steering system be free ofair before any testing is attempted.Hydraulic fluid must also be at thecorrect level in reservoir.

To check for steering wheel slip,cycle steering system until all compo-nents and fluid are at operating tem-perature (150°F). Remove steeringwheel cap ( monogram ), then turn frontwheels until they are against stop.Attach a torque wrench to steeringwheel nut.

NOTE: Either an inch -pound, or afoot-pound wrench may be used; how-ever, an inch -pound wrench is recom-mended as it is easier to read.

Advance throttle until engine reaches2000 rpm, then apply 72 inch-pounds (6foot-pounds) to torque wrench in samedirection as the front wheels are posi-tioned against stop. Keep this pressure(torque) applied for a period of oneminute and count the revolutions ofthe steering wheel. Use same proce-dure and check the steering wheel slipin the opposite direction. A maximumof three revolutions per minute ineither direction is acceptable andsystem can be considered as operatingsatisfactorily. If the steering wheelrevolutions per minute exceed three,record the total rpm for use inchecking the steering cylinder onmodels equipped with double actingsteering cylinder (Fig. 19).

NOTE: While three revolutions perminute of steering wheel slip is accept.able, It is generally considerably less innormal operation.

23. STEERING CYLINDER TEST.If steering wheel slip is more thanthree revolutions per minute on modelsequipped with double acting steeringcylinder, check the steering cylinderfor internal leakage as follows: Be sureoperating temperature is being main-tained, then disconnect and plug thesteering cylinder lines. Repeat thesteering wheel slip test , in both direc-tions, as described in paragraph 22. Ifsteering wheel slip is 1/4 rpm or more,below that recorded in paragraph 22,overhaul or renew the steering cylin-der.


POWER STEERING CYLINDERAND CONTROL VALVE

Series B -414.354-364-384

24. REMOVE AND REINSTALL. Toremove the power steering cylinderand control valve assembly, first dis-connect hoses from cylinder and eitherplug hoses or suspend the disconnectedends high enough to prevent fluiddrainage. Turn front wheels full leftand full right several times to clear oilfrom cylinder and control valve. Dis-connect drag link from ball pin, thendisconnect cylinder from steering armand reaction bracket and remove as-sembly from tractor.

CAUTION: Do not use a wedge orpinch bar to remove drag link from ballpin as damage to control valve couldresult. Use a puller.

When reinstalling, be sure anchorball (50-Fig. 18) moves freely butwithout slack in its cups. Vary shims(52) to adjust anchor ball.

After cylinder and valve are installed,fill and bleed system as outlined inparagraph 14.

25. OVERHAUL. The overhaul pro-cedure given is for the R91 steeringcylinder. Overhaul procedure for theR92 cylinder is similar . The pressureand return ports are reversed on the

Fig. IS-Exploded view of Series B-414 , 354, 364 and 384 power steering cylinder and valveassembly . Refer to Fig . 12 for view of connecting link which fits into take -off extension (2),

1. Lock ring 14. Reaction ring 27. Spring cover 40. Velumoid washer2. Takeoff extension 15. Reaction spring 28. Ball pm 41. Washer3. Spring clip 16. washer 29. Outer tube 42. Scraper4. Ball cup holder 30. Inner tube 43. Scraper housing5. Ball cup 18. Valve spool 31. Not 44. Snap ring6. Ball cur 19. Valve body 32. Piston 45. Scraper7. Belleville washers 20. End cover 33. Piston ring 46. Lock ring8. Backing washer 21. "0" ring 34. Piston rod 48. Rubber boot9. Locating sleeve 22. Snap ring 35. Rushing 49. Inner ball cup

10. Nut 23. Relief valve ball 36. Bearing housing 50. Anchor ball11. Operating sleeve 24. Spring 37. "0" ring 51. Pin12. Spacer 2 Plug & i 38. Seal spreader 52. Shim13. Collsr 26. Felt pad 39. Gland seal 53. Outer ball cup

12



R92 cylinder and the by-pass valve isinstalled in the opposite end of valvebody. The reaction ring was also elimi-nated on the R92 cylinder. With powersteering cylinder and control valveassembly removed as outlined in para-graph 24, refer to Fig. 18 and proceedas follows: Drive pin (51) from anchorball (50) and remove anchor ball, innerball cup (49) and rubber cover (48)from piston rod. Remove cotter pinsfrom cylinder ends. Remove bearinglock ring (46), then pull piston andbearing assembly ( 36) from cylinder.Remove retaining nut and washer andremove piston (32) from piston rod,then remove bearing assembly (36)from piston end of piston rod. Snapring (44), scraper (45) and seal assem-bly (items 38 through 43) can now beremoved from bearing assembly (36).

Loosen jam nut and remove con-necting link from forward end of cylin-der. Remove spring cover (27) and feltpad (26). Remove lock ring (1) andtake-off extension (2), then removespring clip (3), ball cup holder (4) andball cup (5). Remove ball pin (28) fromend of cylinder, then remove ball cup(6), Belleville washers (7) and backingwasher (8). Remove control valve andinner tube (30) assembly from outertube (29) and remove inner tube fromcontrol valve body. Remove the cotterpin, nut (10) and washer from forwardend of spool (18). The operating sleeve(11), spacer (12) and collar (13) can nowbe removed. Remove reaction ring (14),spring ( 15), washer ( 16) and "0" ring(17) from spool. Remove snap ring (22),end cover (20) and "0" ring. Removerelief valve plug and pin (25), spring(24) and ball (23).

26. Thoroughly clean all parts andinspect for wear and/or damage.

Inspect spool and valve body forburrs and scoring. Burrs can beremoved using crocus cloth or very fineemery cloth. Fit of spool in body isconsidered satisfactory when spool willfall freely by its own weight into thevalve body when coated with a lightfilm of oil.

NOTE: Valve spool and body are notcatalogued separately and must be pur-chased as a mated pair.

Use caution when depressing spoolnot to round off any of the sharp edges.To do so may affect the operation ofthe valve.

Inspect the mating surfaces of theoperating and locating sleeves andremove any burrs or scoring withcrocus cloth or very fine emery cloth.The operating sleeve should slide freelyin the locating sleeve when coated witha light film of oil.

Inspect the inner tube, piston, piston

ring, piston rod and bearings for signsof wear, scoring and distortion. Renewas necessary.

NOTE: Piston rod (34), bushing (35),bearing housing ( 36), anchor ball (50)and anchor ball pin ( 51) are not avail-able separately.

Inspect anchor ball, anchor ball pinand anchor ball cups for signs of wearor hammering and renew as necessary.

Use all new "0" rings when reassem-bling.

27. To reassemble the power steeringcylinder and control valve assembly,the following procedure is recom-mended: Install relief valve ball andspring in valve body and tighten theplug and pin assembly securely. Anyrenewal of dowel pins can be accom-plished by driving the new pins intoplace. Install new "0" ring on endcover (20) of valve body end cover,then install end cover in valve bodyand secure with snap ring (22). Installinner tube (30) on valve body and besure slot in inner tube mates withdowel of valve body. Place new "0"rings on forward end of valve spool andoutside diameter of reaction ring, theninstall the washer, spring and reactionring on spool and be sure the chamfersof reaction washer and reaction ringface valve spool. Install the collar onthe threaded portion of spool, theninstall spacer over collar. Positionspacer so that the holes in same alignwith corresponding holes and dowel pinin valve body. Assemble the operatingsleeve on the collar, then install thesteel washer and nut. Tighten nut to atorque of 110 in.-lbs. and install cotterpin. Lubricate the operating sleeve,then slide locating sleeve over same.

Install seal spreader into the pistonrod bearing, flat side first; then, usingthe proper size socket, install glandseal. Start from piston end of pistonrod and slide snap ring, scraperhousing, square section scraper, flatwasher and vellumoid washer on pistonrod. Install bearing assembly on pistonrod, install seals and washers incounterbore of bearing assembly andsecure in place by installing snap ring.Install scraper. Install new "0" ring onoutside diameter of bearing assembly.

Install piston ring on piston, theninstall piston to piston rod, flat sidefirst and install washer and castellatednut. Tighten nut to a torque of 34-35ft.-lbs. and install cotter pin.

NOTE: Do not overtighten nut orpiston may distort and bind In tube.

Compress the piston ring and slidethe piston rod assembly into the innertube assembly as far as it will go,making sure shoulder of bearing assem-

Paragraphs 26-28

bly enters inner tube. Lubricate spoolassembly and carefully slide same intovalve body making sure small hole inspacer is located on the dowel of thevalve body.

Slide the inner tuhe :ii .d valt^assembly into the outer t .tb trout Ih"anchorage (aft) end. Align the hoseports radially. Screw piston rod bear-ing lock ring into outer tube until hoseports are also aligned longitudinallyand a slot in the lock ring is alignedwith cotter pin hole, then install cotterpin.

Install backing plate, chamfer sidefirst, into the operating sleeve and besure it is correctly seated . Place heavygrease on the Belleville washers andplace them in recess of the rear ballcup with the convex sides together;then install ball cup and washers in theoperating sleeve. Install ball pin, frontball cup, ball cup holder, spring clipand take-off extension. Tighten takeoffextension until snug , then backoff44-turn. Install take-off extension lockring, tighten and secure with cotterpin.

Install rubber cover and inner anchorball cup on piston rod, then instal!anchor ball and retaining pin.

Mount power steering cylinder ontractor as outlined in paragraph 24. Filland bleed power steering system asoutlined in paragraph 14.

STEERING CYLINDER

Series 424-444-2424-2444

28. DOUBLE ACTING CYLINDER.To remove the double acting steeringcylinder (Fig. 19), disconnect andimmediately plug the hydraulic lines.Remove cap screws from lower steer-ing arm (33-Fig. 5) and disengagecylinder from steering arms. Removepin retaining anchor assembly U5-Fig.19) to axle main member and removecylinder assembly front tractor

Move piston trod back awl iorth s<-ceral times to clear oil from cylinder.Place end of piston rod which has theflats in a vise, then unscrew andremove anchor assembly (15). Removecylinder head retaining ring (7) as fol-lows: Lift end of retainer ring out ofslot, then using a pin type spanner,rotate cylinder head (2) and workretainer ring out of its groove. Cylinderhead and the piston and rod assembly(10) can now be removed from cylindertube (12). Remove remaining cylinderhead in the same manner. All seals,"0" rings and back-up washers arc nunavailable for inspection and; or renewal

Clean all parts in a suitable solvent andinspect. Check cylinder tube for scaring, grooving and out -of -roundness.

13W


Paragraphs 29-30

Light scoring can be polished out byusing a fine emery cloth and oil,providing a rotary motion is usedduring the polishing operation. A cylin-der tube that is heavily scored orgrooved, or that is out-of-round, shouldhe renewed. Check piston rod and pis-ton for scoring, grooving and straight-ness. Polish out very light scoring withfine emery cloth and oil, using a rotarymotion. Renew rod and piston assemblyif heavily scored or grooved, or ifpiston rod is bent. Inspect piston ring(9) for frayed edges, wear and im-bedded dirt or foreign particles. Renewpiston ring if any of the above condi-tions are found.

NOTE: Do not remove " 0" ring (B)located under the piston ring unlessrenewal is Indicated as It Is not neces-sary to renew this "0" ring unless It isdamaged.

Inspect balance of "0" rings, back-upwashers and seals and renew as neces-sary. Inspect bores of cylinder headsand renew same if excessively worn orout-of-round.

Reassemble steering cylinder as fol-lows: Place "0" ring (14), with back-upwasher (13) on each side, in groove atinner end of anchor assembly oil tube.Install piston rod "0" ring (11) ingroove at threaded end of piston rod.

1 2 1333456 7

/ 8 9 10 11

-

------------ -1

14

13^ ^13 15r V^^

Fig. 19-Exploded view of double actingsteering cylinder used on Series 424, 444,2424 and 2444 equipped with narrow tread

front axle.

1. Wiper seal S. Piston "0" ring2. Cylinder head 9. Piston ring3. Back -up washer 10. Piston & rod4. "0" ring 11. "0" ring5. Back-up washer 12. Cylinder tube6. "0" ring 13. Beck -up washer7. Cylinder head 14. "0" ringretaining ring 15. Anchor assy.


Install wiper seal (1), back-up washer(3), "0" ring (4), back-up washer (5)and cylinder head "0" ring (6) to cylin-der head, then install cylinder headassembly over threaded end of pistonrod. Lubricate "0" ring and back-upwashers on inner end of anchor assem-bly oil tube and carefully insert intothreaded end of piston rod. Lubricatepiston rod "0" ring (11) and pushanchor assembly toward piston rod. As"0" ring on inner end of oil tube ap-proaches the drilled hole (port) in pis-ton rod (located near piston), use IHCtool FES 65, or equivalent, to depress"0" ring and washers so they will passthe port without being damaged. Screwanchor assembly onto piston rod andtighten to a torque of 150 ft.-lbs. Lubri-cate piston ring (9) and cylinder head"0" ring (6), then using a ring com-pressor, or a suitable hose clamp,install piston and rod assembly intocylinder tube. Install cylinder head incylinder tube so hole in groove willaccept nib of retaining ring. Positionretaining ring and pull same into itsgroove by rotating cylinder head. Com-plete balance of assembly by reversingdisassembly procedure.

Reinstall unit on tractor, then fill andbleed the power steering system asoutlined in paragraph 14.

29. SINGLE ACTING CYLINDERS.To remove the single acting steeringcylinders, disconnect the lines fromsteering cylinders and cap the lines toprevent dirt from entering system.Disconnect the cylinders from thecenter steering arm and axle mainmember, then remove the cylindersfrom tractor.

To disassemble the removed cylin-ders, pull the rod (5-Fig. 20) from thecylinder barrel (1). Normal service onthe single acting cylinders consists ofrenewing the "0" ring (2 ), back-upwasher (3) and wiper seal (4).

After reinstalling the cylinders, filland bleed the system as outlined inparagraph 14.

HAND PUMP

Series 424-444-2424-2444

30. REMOVE AND REINSTALL. Toremove the hand pump, remove steer-ing wheel and panel below instrumentpanel.

NOTE: Use a puller to remove steer-

22-0(0-21

0 -2019-(7

C-1817-®

0-16IS-a

Q- 14

13-

0 -1211-0

- 9A

®-78-9

4-®

-3

Fig. 21-Exploded view of power steeringhand pump assembly.

eFig. 20-Exploded view of a single actingcylinder used on Series 424, 444, 2424 and2444 equipped with standard adjustable frontaxle or heavy duty non-adjustable front axle.

1. Barrel2. "0" ring 4. Wiper seal3. Back-up washer 5. Rod

1. Cap screws2. End plate3: Seal retainer4. Seal5. Rotor at6. Spacer7. Link pin8. Drive link9. Commutator

9A. Commutator pin10. Ch pling (input)

11. Thrust bearing12. Bearing race13. Body14. Needle bearing15. Seal16. Back-up washer17. Spacer18. Washer19. Snap ring20. Felt seal21. Water at22. Wheel nut

n

aa.

ass

14



ing wheel , do not bump on upper endof steering wheel shaft.

Disconnect lines from hand pump,then unbolt and remove hand pumpfrom under instrument panel.

Reinstall by reversing the removalprocedure and bleed power steeringsystem as outlined in paragraph 14.

31. OVERHAUL MANUAL (HAND)PUMP. Remove the manual pump asoutlined in paragraph 30. Clear fluidfrom unit by rotating steering wheel(input) shaft back and forth severaltimes. Place unit in a soft jawed visewith end plate on top side, thenremove end plate retaining cap screwsand lift off end plate (2-Fig. 21).

NOTE : Lapped surfaces of end plate(2), pumping element (5), spacer (6),commutator (9) and pump body (13)must be protected from scratching,burring or any other damage as sealingof these parts depends only on theirfinish and flatness.

Remove seal retainer (3), seal (4),pumping element (5), link pin (7) andspacer (6) from body (13). Remove com-mutator (9) and drive link (8), with linkpin (7) and commutator pin (9A), frombody. Smooth any burrs or nicks whichmay be present on input shaft (10),wrap spline with masking tape, thenremove input shaft from body. Removebearing race (12) and thrust bearing(11) from input shaft. Remove snapring (19), washer (18), spacer (17),back-up washer (16) and seal (15). Donot remove needle bearing (14) unlessrenewal is required. If it should benecessary to renew bearing, presssame out pumping element end ofbody.

Clean all parts in a suitable solventand if necessary, remove paint fromouter edges of body, spacer and endplate by passing these parts lightlyover crocus cloth placed on a perfectlyflat surface. Do not attempt to dressout any scratches or other defects sincethese sealing surfaces are lapped towithin 0.0002 of being flat, However, in

Fig. 22-Position pumping element as shownto check tooth clearance . Refer to text.

cases of emergency, a spacer that isdamaged on one side only may be usedif the smooth side is positioned next tothe pumping element and the damagedside is lapped flat.

Inspect commutator and housing forscoring and undue wear. Bear in mindthat burnish marks may show, or dis-colorations from oil residue may bepresent, on commutator after unit hasbeen in service for some time. Thesecan be ignored providing they do notinterfere with free rotation of com-mutator in body.

Check fit of commutator pin in thecommutator. Pin should be a snug fitand if bent, or worn until diameter atcontacting points is less than 0.2485,renew pin.

Measure inside diameter of inputshaft bore in body and outside diame-ter of input shaft bearing surface. Ifbody bore is 0.006, or more, larger thanshaft diameter, renew shaft and/orbody and commutator.

NOTE : Body and commutator are notavailable separately.

Check thrust bearing and race forexcessive grooving, flat spots or anyother damage and renew bearingassembly if necessary.

Place pumping element on a flat sur-face and in the position shown in Fig.22. Use a feeler gage and check clear-ance between ends of rotor teeth andhigh points of stator. If clearanceexceeds 0.003, renew pumping element.Use a micrometer and measure width(thickness) of rotor and stator. If statoris 0.002 or more wider (thicker) thanthe rotor, renew the pumping element.Pumping element rotor and stator areavailable only as a matched set.

Check end plate for wear, scoringand flatness. Do not confuse the polishpattern on end plate with wear. Thispattern, which results from rotor rota.tion, is normal. Renew end plate ifworn or scored and is not within 0.0002of being flat.

When reassembling, use all new sealsand back-up washers. All parts, exceptthose noted below, are installed dry.Reassemble as follows: If needle bear-ing (14-Fig. 21) was removed, lubri-cate with IH Hy-Tran fluid, install frompumping element end of body andpress bearing into bore until inside endmeasures 3-13/16 to 3-7/8 inches frompumping element end of body as shownin Fig. 23. Lubricate thrust bearingassembly with IH Hy-Tran fluid andinstall assembly on input shaft withrace on top side. Install input shaft andbearing assembly in body and check forfree rotation. Install a link pin in oneend of the drive link, then install drivelink in input shaft by engaging the flats

Paragraph 31

on link pin with slots in input shaft.Use a small amount of grease to holdcommutator pin in commutator, theninstall commutator and pin in bodywhile engaging pin in one of the longslots of the input shaft. Commutator isrorroclly installed whCn osI' ,..,.mutator is slightly below caling surface of body. Clamp body in a softjawed vise with input shaft pointingdownward. Again make sure surfacesof spacer, pumping element, body andend plate are perfectly clean, dry andundamaged. Place spacer on 1,oo, andalign screw holes with those of budp.Put link pin in exposed end of drivelink, then install pumping elementrotor while engaging flats of link pinwith slots in rotor . Position pumpingelement stator over rotor and alignscrew holes of stator with those ofspacer and body. Lubricate pumpingelement seal lightly with IH Hy-Tranfluid and install seal in seal retainer,then install seal and retainer overpumping element stator, Install endcap, align screw holes of end cap withthose in pumping element, spacer andbody, then install cap screws. Tight(!,cap screws evenly to a torque of 1b-_2ft.-lbs.

NOTE: If input shalt does not turnevenly after cap screws are tightened,loosen and retighten them again. How-ever , bear in mind that the unit wasassembled dry and some drag isnormal.

If stickiness or binding cannot beeliminated, disassemble unit and checkfor foreign material, nicks or burrswhich could be causing interference.

Lubricate input shaft seal with IHHy-Tran fluid and with input shaftsplines taped to protect seal, installseal, back-up washer, spacer , washerand snap ring . The felt washer and

Fig. 23-When renewing needle bearing inpump body, install same to dimension

shown.

15


Paragraphs 32-34 INTERNATIONAL HARVESTERwater sea) may be installed at this timebut there will be less chance of loss ordamage if installation is postponed untilthe time the steering wheel is installed.

After unit is assembled, turn unit onside with hose ports upward. Pour unitfull of oil and work pump slowly untilinterior (pumping element) is thorough-ly coated. Drain excess oil.

Reinstall unit by reversing the re-moval procedure and bleed powersteering system as outlined in para-graph 14.

With valve removed, disassemble asfollows: Refer to Fig. 24 and removeend caps (1) with "0" rings (2). Pullspool and centering spring assemblyfrom valve body. Place a punch orsmall rod in hole of centering springscrew (3) and remove screw, centeringspring (5) and centering spring washers(4) from spool. Remove plug (11), "0"ring (12) and circulating check ball (10).Remove retainer (16), seat (15), andpressure check valve ( 14) and spring(13).

Wash all parts in a suitable solventand inspect. Valve spool and spool borein body should be free of scratches,scoring or excessive wear. Spool shouldfit its bore with a snug fit and yetmove freely with no visible side play. Ifspool or spool bore is defective, renewcomplete valve assembly as spool andvalve body are not available separately.

Inspect pressure check valve andseat. Renew parts if grooved or scored.

Reassembly is the reverse of disas-sembly and the following points shouldbe observed. Coat all parts with IH Hy-Tran fluid , or its equivalent, prior toinstallation . Install spool assembly invalve body so that centering spring isat end opposite the recirculating valve.Measure distance between gasket sur-face of circulating check ball plug andinner end of roll pin. This distanceshould be 15/16-inch, and if necessary,obtain this measurement by adjustingroll pin in or out. Tighten end capretaining cap screws to a torque of 186in.-lbs.

FLOW DIVIDER VALVE to

CONTROL (PILOT) VALVE

Series 424-444-2424-2444

32. R&R AND OVERHAUL. Toremove the control (pilot) valve, drainthe hydraulic reservoir and disconnectthe hydraulic lines. Unbolt and removethe control (pilot) valve.

NOTE: Plug hydraulic lines andopenings immediately to prevent dirtfrom entering system.

Reinstall valve by reversing removalprocedure and bleed power steeringsystem as outlined in paragraph 14.

Series B-414

33. R&R AND OVERHAUL. Pro-cedure for removal of the flow controlvalve and tubing assembly will beobvious after an examination of theunit.

Removal of relief valve (items 6through 10-Fig. 25) can be accom-plished by removing plug (6). Removalof flow control valve (5) and spring (4)can be accomplished after removal ofsnap rings (1) and plugs (2 and 12).

Free length of spring (4) is 33/4inches and spring should test 18.0 lbs.when compressed to a length of 2-3/8inches.

Spring (8) should have a free lengthof 1.250 inches and test 21.0 lbs. whencompressed to a length of 1.087 inches.

Refer to paragraph 17 for method ofchecking the steering system operatingpressure.

Series 424 -444-2424-2444

34. R&R AND OVERHAUL. Toremove the flow divider valve, firstdrain the hydraulic system, then dis-connect the pump pressure hose, hitchsupply pressure pipe , power steeringsupply pressure pipe and the reliefvalve return pipe . Unbolt and removethe flow divider valve assembly.

Remove plug (3-Fig . 26) and spool(2), then unscrew slotted plug (8) andwithdraw relief valve spring (6) andrelief valve (5).

Inspect all parts for scratches, scor-ing and undue wear. Relief valvespring free length should be 1.238inches and should test 20-20.4 lbs. whencompressed to a length of 63/64-inch. If

Me

a

63121

1314-S15-.16-00

Fig. 24-Exploded view of the control (pilot)valve.

1. End cp2. 0" ag 9. Valve body3. Centering spring 10. Check ball

scre" 11. Plug4. Centering spring

w sh12. "0" ring13 S ia er

5. Centering spring. pr ng

14. Check valve6. Valve spool 16. Seal7. Plug 16. Retainer

Fig. 25-Exploded view ofSeries B -414 flow controland relief valve used with

single stage pump.

1. Snap ring2. Plug3. "0" ring4. spring5. Flow control valve6. Plug & pin7. Seal weasher

9. Relief valve balllo. valve guideit. Valve body & tubes

any.12. Plug

16



spool (2) or spool bore in valve body (1)is defective, renew complete valveassembly as spool and valve body arenot available separately. Spool shouldmove freely in its bore with no binding.

Coat all parts with Hy-Tran fluid, orits equivalent, and reassemble valve.

Reinstall valve by reversing removalprocedure, then fill and bleed powersteering system as outlined in para-graph 14.

To check the relief valve operatingpressure proceed as follows: Disconnecta steering cylinder hose, then using a

tee connector, install a gage capable ofregistering 3000 psi in this circuit.Start engine and run at 2000 rpm. Turnsteering wheel in the direction neededto pressurize the steering line in whichgage is installed . When wheels reachstop, continue to apply steering effortto steering wheel and note reading onthe gage. The gage should read1500-1600 psi. A too high reading indi-cates a stuck relief valve while a toolow reading could be caused by a weakor broken relief valve spring or a wornor scored relief valve.

Fig. 26-Exploded view ofthe proportional type flowdivider valve used on Ser-ies 424, 444, 2424 and2444 tractors. Note thepower steering relief valve

(5).

1. Valve body2. Spool3. Plug

5. Relief valve6. Relief valve spring7. "0" ring8. Plug9. Snap ring10. "0" ring11. Plug

ENGINE AND COMPONENTS

R&R ENGINE WITH CLUTCH

Series B -275-B -414-354-364-384Diesel

35. To remove the engine and clutchas an assembly, first drain cooling sys-tem, remove air cleaner cap and muf-fler, if equipped with vertical exhaust,then unlatch and raise hood . On SeriesB-275 and B-414 remove cotter pinsfrom aft ends of the stay rod slides andmove hood at a vertical position. Dis-connect headlight wires at junction onfront support, then remove hood pivotbolts and hood. Do not lose the twohood pivot bolt spacers. On Series 354,364 and 384, remove the hood andradiator grille, disconnect the wiringfrom horn, disconnect ground lead andmove the harness back on engine. Onall series, disconnect drag link orpower steering cylinder, if so equipped,from left steering arm. Disconnectupper and lower radiator hoses. Dis-connect fuel filter bracket from radi-ator on Series B-275. Support tractorunder clutch housing , then unbolt front

support from engine and roll the frontsupport, axle and radiator assemblyaway from tractor.

On Series B-275 and B-414 removebattery shield, battery hold-down andbatteries. Remove battery carrier. Onall series, if tractor is equipped withdown swept exhaust , either removethe exhaust pipe from exhaust mani-fold or disconnect manifold from cylin-der head . Disconnect tachometer cable,wires from generator , starter switchand number four glow plug , unclipwiring loom and lay wires rearward.Disconnect fuel shut-off rod at injec-tion pump and remove rod. Close thefuel shut-off valve and disconnect fuelsupply line from fuel pump. Discon-nect oil pressure gage line from cyl-inder block and the temperature send-ing unit from cylinder head. Discon-nect fuel return line from fuel tank.Disconnect the inlet and pressure linefrom hydraulic pump , if so equipped.Attach hoist to engine then unbolt andseparate engine from clutch housing.

NOTE : When rejoining engine to

Paragraphs 35-36

clutch housing , time can often besaved , particularly on dual clutch mod-els, if the following procedure is used.

Unbolt clutch assembly from fly-wheel and place same on transmissioninput shaft. Move sections togetheruntil clutch (input) shaft pilot enterspilot bearing and flywheel butts againstclutch cover. Now bolt clutch to fly-wheel and complete the mating of en-gine and clutch housing by pulling sec-tions together with the retaining capscrews.

Series B-414-354 Non-Diesel36. To remove the engine and clutch

as an assembly, first drain cooling sys-tem, remove air cleaner cap and muffler if equipped with vertical exhaust.Then on Series B-414, unlatch and raisehood, remove cotter pins from aft endsof stay rod slides and move hood to avertical position. Disconnect headlightwires at junction on front support, thenremove hood pivot bolts and hood. Donot lose the two hood pivot boltspacers. On Series 354 remove thehood, radiator grille and air cleanerhose, disconnect the wiring from hornand battery ground cable, then movethe harness back on the engine. Oneither series disconnect drag link, orpower steering cylinder if so equipped,from left steering arm. Disconnectupper and lower radiator hoses. Support tractor under clutch housing, thenunbolt front support from engine androll the front support, axle and radiatorassembly away from tractor.

On Series B-414, remove batteryshield, battery hold-down and battery.Remove battery carrier. On eitherseries, if tractor is equipped with adown swept exhaust, either remove theexhaust pipe from exhaust manifold ordisconnect manifold from cylinder head.Disconnect wires from generator,starter switch and ignition coil, unclipwiring loom and lay wires rearward.Disconnect battery cable from starterand operating rod from starter switch.Disconnect choke control from carbure-tor. Disconnect and remove the gover-nor to bellcrank rod. Close fuel shut-offand disconnect fuel supply line fromfuel pump. Disconnect oil pressure linefrom cylinder block and temperaturesending unit from cylinder head. Dis-connect inlet and pressure lines fromhydraulic pump. Attach hoist to engine,then unbolt and separate engine fromclutch housing.

NOTE: When rejoining engine toclutch housing , time can otten besaved , particularly on dual clutch mod-els, if the following procedure is used.

Unbolt clutch assembly from fly-wheel and place same on transmission

17


Paragraphs 37-39

input shaft. Move sections togetheruntil clutch (input) shaft pilot enterspilot bearing and flywheel butts againstclutch cover. Now bolt clutch to fly-wheel and complete mating of engineand clutch housing by pulling sectionstogether with the retaining cap screws.

Series 424-444- 2424 -2444 Diesel37. To remove the engine and clutch

as an assembly, first drain the coolingsystem and disconnect battery cables.Remove the pre-cleaner , muffler (ifequipped with vertical exhaust), hoodand side panels. On tractors equippedwith mechanical steering, unbolt thesteering shaft front and rear bearingbrackets from the fuel tank supportand clutch housing. Slide the steeringshafts forward and out of the mastersplined yoke. On tractors equippedwith power steering , remove the steer-ing tube clip from engine and dis-connect the tubes from the powersteering control valve. Plug and cap allopenings to prevent dirt from enteringsteering system.

Remove the radiator hoses, discon-nect headlight wires and unbolt theradiator brace and fan shroud fromradiator. Place wood blocks betweensteering gear housing and axle to pre-vent tipping. Using a suitable jackunder the clutch housing, raise front oftractor to remove most of the weightfrom the front tires . Unbolt the stayrod bracket from clutch housing andthe steering gear housing from front ofengine. Raise tractor engine untilcrankshaft pulley will clear steeringgear housing, then roll front endassembly from tractor.

Remove the temperature indicatorbulb, fuel shut-off cable and throttlerod. Disconnect wiring harness termi-nal blocks located under instrumentpanel and work the harness forwarduntil it is clear of clutch housing.Remove the battery cable from thecranking motor solenoid switch. Dis-connect the fuel lines from tank andplug openings. Unbolt the air cleanerbracket from fuel tank support anddisconnect the tachometer drive cable.Place a wood block between fuel tankand clutch housing, then disconnect fueltank support from engine.

Drain hydraulic system and discon-nect the hydraulic pump pressure hosefrom the flow divider valve . Loosenhose clamps and slide the hose couplingforward on the hydraulic pump suctionpipe. Plug and cap all openings . Unboltand remove cranking motor. If tractoris equipped with an underslung muf-fler, the exhaust pipe can now beremoved. Remove clutch housing frontdust cover.

Attach a hoist to the engine, unbolt


and separate engine from clutch hous-ing.

When rejoining engine to clutchhousing, unbolt clutch assembly fromflywheel and place same on the ptodriving shaft (two stage clutch) andtransmission input shaft. Bolt engine toclutch housing, then working throughthe opening in bottom of clutch hous-ing, bolt clutch assembly to flywheel.

Complete the engine installation byreversing the removal procedure. Ventthe fuel system and bleed the powersteering system.

Series 424 -444-2424-2444Non-Diesel

38. To remove the engine and clutchas an assembly , first drain the coolingsystem and disconnect battery cables.If tractor is equipped with vertical ex-haust, remove the muffler, then removethe pre-cleaner, hood and side panels.On tractors equipped with mechanicalsteering, unbolt the steering shaft frontand rear bearing brackets from the fueltank support and clutch housing. Slidethe steering shafts forward and out ofthe master splined yoke. On tractorsequipped with power steering, removethe steering tube clip from engine anddisconnect the tubes from the powersteering control valve. Plug and cap allopenings to prevent dirt from enteringsteering system.

Remove the radiator hoses, tempera-ture indicator bulb, governor controlrod and the tank to filter fuel line.Disconnect the headlight wires, chokecable and tachometer drive cable.Unbolt the radiator brace and fanshroud from radiator, then place woodblocks between steering gear housingand axle to prevent tipping. Using asuitable jack under clutch housing,raise front of tractor to remove most ofthe weight from front tires . Unboltstay rod bracket from clutch housingand the steering gear housing fromfront of engine. Raise tractor engineuntil crankshaft pulley will clear steer-ing gear housing, then roll front endassembly from tractor.

Disconnect wiring harness terminalblocks located under instrument paneland work the harness forward until itis clear of clutch housing . Remove thebattery cable from the cranking motorsolenoid switch, then unbolt and re-move cranking motor . Unbolt the aircleaner bracket from fuel tank support,place a wood block between fuel tankand clutch housing and then unbolt thefuel tank support from engine . If trac-tor is equipped with an underslungmuffler , remove exhaust pipe.

Drain the hydraulic system and dis-connect the hydraulic pump pressurehose from the flow divider valve.

Loosen hose clamps and slide the hosecoupling forward on the hydraulicpump suction pipe . Plug and cap allopenings.

Attach a hoist to the engine, unboltand separate engine from clutch hous-ing.

When rejoining the engine to clutchhousing, unbolt clutch assembly fromflywheel and place same on the ptodriving shaft ( two stage clutch ) and thetransmission input shaft . Bolt engine toclutch housing , then working throughthe opening in bottom of clutch hous-ing, bolt clutch assembly to flywheel.

Complete the engine installation byreversing the removal procedure. Refillhydraulic reservoir and bleed thepower steering system.

CYLINDER HEAD

NOTE: In all engines except Series424, 444, 2424 and 2444 non-diesel, thecylinder bolt bores In cylinder block arefitted with Hell-Coll Inserts which canbe removed and renewed using thetools shown In Fig. 27, or their equiva-lents . New Hell -Coll Inserts are in-stalled with the driving lug on bottomand are screwed into the tapped holeuntil top side of 0 . 100-0 . 125 below edgeof bore.

Series B-275-B-414 -354-364-384Diesel

39. To remove cylinder head, firstdrain cooling system and on SeriesB-275 and B-414, remove air cleanercap and muffler , if equipped with ver-tical exhaust. Then, unlatch and raisehood. Remove the radiator brace, thendisconnect the hood bracket fromtappet cover and place hood in a verti-cal positon. Remove the hood guide tovalve tappet cover brace. Removebattery shield, battery hold-down andbatteries. Disconnect fuel return line attank and at front of hood guide. Dis-

Fig. 27-Tools used to remove and Installthe Hell-Coll Inserts.

1. Extracting tool 2. Inserting tool

18



connect air cleaner inlet hose from inletmanifold, then unbolt and remove hoodguide and air cleaner as a unit. OnSeries 354, 364 and 384, unbolt andremove hood and disconnect air cleanerinlet hose from inlet manifold. On allseries, disconnect wires from alternatoror generator and disconnect loom fromthermostat housing. Disconnect alter-nator or generator adjusting strap,remove drive belt, then unbolt andremove mounting bracket and alterna-tor or generator. Disconnect upperhose from radiator, unbolt water outletelbow and remove outlet and upperhose. Disconnect lead wire from num-ber four glow plug. Remove the tem-perature indicating sending unit fromcylinder head. Remove the breatherline which runs from injection pumpdrive gear cover to intake manifold. OnSeries B-275 remove lines from fuelfilter, disconnect fuel filter bracket fromfan shroud and remove bracket andfuel filter. On Series 8-414, 354, 364and 384 disconnect lines from fuel filterbut leave filter attached to inletmanifold. On all series, disconnect thepressure lines from injectors, thenremove the leak-off (excess) fuel linefrom the top of each injector. Removeinlet (with fuel filter attached on B-414,354, 364 and 384 tractors) and exhaustmanifolds from cylinder head. Removetappet lever cover and gasket. Unboltand remove the tappet levers and shaftassembly.

NOTE: When removing the tappetlevers and shaft assembly, keep pres-sure on outer ends to prevent the twopiece shaft assembly from flying apart.

Identify push rods and lift out same,then remove balance of cylinder headbolts and remove cylinder head.

40. Reinstall cylinder head by revers-ing the removal procedure and whenrenewing cylinder head gasket, be sureto use the latest type which hasferrules in the two holes shown in Fig.28. Position cylinder head gasket withword "TOP" upward, use guide studsin the two ferruled gasket holes, theninstall cylinder head.

Tighten cylinder head bolts in thesequence shown in Fig. 29 and to atorque of 70-75 ft. Ibs. for the B-275, or75-80 ft.-Ibs. for the 8-414, 354, 364 or384 diesel engines. Tighten all manifoldstud nuts to 25-30 ft.-tbs. Adjust tappetgap to 0.020 hot on all diesel enginesand bleed fuel system as outlined inparagraph 91.

Series B-414 -354 Non-Diesel41. To remove cylinder head, first

drain cooling system, and on SeriesB-414 remove air cleaner cap and muf-fler, if equipped with vertical exhaust,

then unlatch and raise hood. Removeradiator brace, then disconnect thehood bracket from tappet cover andplace hood in a vertical position.Remove the hood guide to tappet coverbrace. Remove battery shield, batteryhold-down and battery. Disconnect aircleaner inlet hose from carburetor,then unbolt and remove hood guide andair cleaner as a unit. On Series 354unbolt and remove hood, disconnect aircleaner inlet hose from inlet manifold.Then, on both series, disconnect wiresfrom generator and disconnect loomfrom thermostat housing. Disconnectgenerator adjusting strap, remove drivebelt from generator, then unbolt mount-ing bracket and remove bracket andgenerator. Disconnect upper hose fromradiator, unbolt water outlet elbow andremove elbow and upper hose. Removetemperature sending unit from cylinderhead. Remove manifold and carburetorassembly from cylinder head. Removetappet lever cover and gasket. Unboltand remove tappet levers and shaftassembly.

NOTE: When removing the tappetlevers and shaft assembly , keep pres.sure on outer ends to prevent assemblyfrom flying apart.

Identify push rods and lift out same,then remove balance of cylinder headbolts and remove cylinder head.

42. Reinstall cylinder head by revers-ing removal procedure and when re-newing cylinder head gasket, be sureto position cylinder head gasket withword "TOP" upward. Tighten cylinder

Fig. 26- View showing (heIwo bolt holes fitted withferrules in the diesel en-gine cylinder head gas-

kets.

Fig. 29- When reinstall.Ing diesel engine cylinderhead, tighten cylinder headbolts in the sequence

shown.

Fig. 30-When reinstallingSeries B -414 or 354 non-diesel engine cylinderhead , tighten cylinderhead bolts in the se-

quence shown.

Paragraphs 40-43

head bolts to a torque of 75-80 ft. his,in the sequence shown in Fig. 30.Tighten all manifold stud nuts to ntorque of 25-30 ft.-Ibs. and adjust tap-pets to 0.020 hot.

Series 424-444-2424-2444 Diesel43. To remove the cylinder head,

first drain cooling system, remove pre-cleaner and muffler, if equipped withvertical exhaust. Remove hood and sidepanels, then disconnect battery groundcable, generator or alternator wires, oilpressure switch wire, headlight wireand lead wire from number four glowplug. Disconnect generator or alterna-tor adjusting strap, remove drive belt,then unbolt mounting bracket andremove bracket and generator oralternator. Disconnect upper hose Cron)radiator, loosen upper clamp on by-passhose, then unbolt and remove thermo-stat housing from cylinder head.

Remove the temperature indicatorbulb, the crankcase breather tube andthe ground wire from number one glo%cplug. Disconnect the air cleaner pipeand unbolt and remove the intakemanifold. Unbolt and remove the aircleaner and heat shield assembly andafter first removing the nuts, lift offthe exhaust manifold. Disconnect thepressure lines from injectors and re-move the leak-off (excess) fuel linefrom top of each injector.

CAUTION: Cap or plug openings ininjectors and lines Immediately.

Unbolt and remove the radiator

II 3 6 1415090108C)16O 0 0 O 0

1! 2 O 124

O O O 0 0 10

19


Paragraphs 44-50

brace, rocker arm cover and the rockerarm and shaft assembly.

NOTE: When removing the rockerarm and shaft assembly , keep pressureon outer ends to prevent the two-pieceshaft assembly from flying apart.

Lift out push rods, remove balance ofcylinder head retaining cap screws andlift off cylinder head.

44. Reinstall cylinder head by revers-ing the removal procedure and whenrenewing cylinder head gasket , positiongasket with word "TOP" facing up-ward. Use guide studs in the twoferruled gasket holes , shown in Fig. 28to align the cylinder head and gasket.

Tighten cylinder head bolts in thesequence shown in Fig . 29 and to atorque of 75-80 ft.-Ibs. Tighten all mani-fold stud nuts to a torque of 25-30ft.-Ibs. Adjust tappet gap to 0 .020 hoton both intake and exhaust valves.Bleed fuel system as outlined in para-graph 91.

Series 424-444 -2424-2444Non-Diesel

45. To remove the cylinder head,first drain cooling system , remove pre-cleaner and muffler , if equipped withvertical exhaust. Remove hood and sidepanels, then disconnect battery groundcable, oil pressure switch wire and igni-tion wires from coil and resistor . Unclipwiring harness and lay it along left sideof engine . Remove upper radiator hose,radiator brace , temperature indicatorbulb and loosen upper hose clamp onthermostat by-pass hose . Unbolt andremove air cleaner and pipe assembly.Disconnect choke cable , governor rodand fuel line from carburetor. Then,unbolt and remove the manifold andcarburetor assembly . Disconnect sparkplug wires and remove the governorcontrol rod clip from right side of cylin-der head. Unbolt and remove therocker arm cover and rocker arms andshaft assembly. Lift out push rods,remove cylinder head retaining capscrews and lift off cylinder head.

46. Reinstall cylinder head by revers-ing the removal procedure. Whenrenewing cylinder head gasket , apply alight coating of lubricant to top face ofcylinder block. The head gasket ismarked for correct installation.

Tighten cylinder head bolts in thesequence shown in Fig . 31 and to atorque of 80-90 ft .-lbs. Tighten manifoldstud nuts to a torque of 3337 ft.-Ibs.Adjust tappet gap to 0 .014 hot for theintake valves and 0 .020 hot for exhaustvalves.


VALVES AND SEATS

All Models47. Intake and exhaust valves are not

interchangeable and on all series except424, 444, 2424 and 2444 non -diesels,seat directly in the cylinder head.Series 424, 444, 2424 and 2444 non-diesel exhaust valves seat on renew-able inserts which are available instandard size as well as oversizes of0.015 and 0 .030. Valves have a face andseat angle of 45 degrees . Seat widthshould be 0 .070-0.080 and total runoutmust not exceed 0.002 . Adjust valvetappet gap on all models except 424,444, 2424 and 2444 non -diesels to 0.020(hot)for both intake and exhaustvalves . On Series 424 , 444, 2424 and2444 non -diesels , adjust valve tappetgap to 0 .014 (hot) for intake valves and0.020 (hot) for exhaust valves.

Use the chart shown in Fig. 32 forvalve tappet gap adjusting procedure.Four valves are adjusted when No. Ipiston is at TDC ( compression ) and theremaining four are adjusted when No.4 piston is at TDC (compression).

Stem diameter of valves used inSeries 424, 444 , 2424 and 2444 non-diesel engines is 0.3405 -0.3415 andnormal operating clearance in guides is0.0015-0.0035. Valve stem diameter onall other series is 0.341-0.342 and nor-mal operating clearance in guides is0.002-0.004.

When removing exhaust valve seatinserts from a Series 424, 444, 2424 or2444 non - diesel cylinder head, usethe proper puller . Do not attempt todrive a chisel under seat insert ascounterbore will be damaged . Chill new

seat insert with dry ice or liquid Freonand when insert is properly bottomed,it should be 0.008 to 0.030 below edgeof counterbore . After installation, peenthe cylinder head material around thecomplete outer circumference of thevalve seat insert.

VALVE GUIDES AND SPRINGS

All Models48. The shouldered valve guides used

in diesel engines are not interchange-able. The inside diameter of all guidesis 0.344-0 .345 which provides a normaloperating clearance of 0.002-0 .004 forthe valves. Press out old guides frombottom of cylinder head . Press newguides in top of cylinder head untilshoulder of guide bottoms againstcylinder head . When correctly installed,guide will protrude 0.938 from top ofcylinder head . Guides are pre-sized;however , they should be reamed afterinstallation , if necessary , to obtain the0.344-0 .345 inside diameter.

49. The shouldered valve guides usedin B-414 and 354 series non-dieselengines are not interchangeable andcan be pressed out from bottom ofcylinder head. Press new guides in topof cylinder head until shoulder of guidebottoms against cylinder head. Whencorrectly installed , top of intake guideis 0.828 inch ; and top of exhaust guideis 0.984 inch, above spring recess ofcylinder head . Guides are pre -sized;however, they should be reamed afterinstallation , if necessary , to obtain aninside diameter of 0.344-0.345.

50. The valve guides used in Series424, 444, 2424 and 2444 non-diesel

Fig. 31-When installingSeries 424, 444 , 2424 and2444 non - diesel cylinderhead , tighten cylinderhead bolts In the se-

quence shown.

WITH ADJUST VALVES (Engine Warm)

No. 1 Piston at T.D.C. (Compression) 1 2 3 5

No. 4 Piston at T.D.C. (Compression) 4 6 7 8

.- F,u„

Numbering sequence of the valve, which cowe,pond to the chart.

Fig. 32-Chart shows the valve tappet gap adjusting procedure.

ee

20



engines are interchangeable. Valveguides are not shouldered and shouldbe pressed in cylinder head until top ofguides are 13 /16-inch above surface ofcylinder head. Inside diameter of valveguides are pre-sized to 0.343-0.344 andif not distorted during installation, willrequire no final sizing.

51. On B -275 series diesel engines,intake and exhaust valve springs areinterchangeable . Renew springs whichare rusted , discolored or do not meetthe following specifications:

Free length .............. 2.531 inchesTest load ...... 42 .5 lbs. at 1 .703 inches

On Series 424, 444, 2424, 2444, B-414,364 and 384 diesel engines, each valveis fitted with two valve springs. Renewsprings which are rusted, discolored ordo not meet the following specifica-tions:

Inner spring,Free length ............2.125 inchesTest load .............. 12.4-13.7 lbs.

at 1.653 inchesOuter spring,

Free length .... .2.550 inchesTest load ............29.532.6 tbs.

at 1.870 inches

On Series 354 diesel engine intakeand exhaust valve springs are inter-changeable. Renew springs which arerusted, discolored or do not meet thefollowing specifications:

Free length ...........2.48-2.58 inchesTest load ................ 28.731.7 lbs.

at 1.922 inches

VALVE TAPPETS(CAM FOLLOWERS)

All Models52. The mushroom type tappets oper-

ate directly in the unbushed crankcasebores and can be removed afterremoving the camshaft as outlined inparagraph 66 and 67. Normal operatingclearance of tappets in crankcase boresis 0.0005-0.003.

VALVE TAPPET LEVERS(ROCKER ARMS)

All Models53. The valve levers and lever shaft

assembly are lubricated via drilledpassages in cylinder block and cylinderhead. Replacement levers with bush-ings are available for all engines andbushings are available separately for alllevers except those used in Series 424,444, 2424 and 2444 non-diesel engines.

Procedure for removal of the valvelevers assembly is evident after remov-ing the tappet lever cover.

NOTE: When removing the tappet

levers and shaft assembly from allengines , except Series 424, 444, 2424

and 2444 non -diesel engines, keep

pressure on outer ends to prevent the

two-piece shaft assembly from flying

apart.

When renewing bushings in valvelevers (all engines except Series 424,444, 2424 and 2444 non-diesel), be sure

On B-414 and 354 series non-dieselengines, intake and exhaust valvesprings are interchangeable. Renewsprings which are rusted, discolored ordo not meet the following specifica-tions:

Free length ............. 2.085 inchesTest load ................71.6-84.0 tbs.

at 1.346 inches

On Series 424, 444, 2424 and 2444non-diesel engines, exhaust valves areequipped with positive type valve rota-tors ("Rotocaps'). Therefore, exhaustand intake valve springs are not inter-changeable. Renew springs which arerusted, discolored or do not meet thefollowing specifications:

Intake valve spring,Free length ............ 2.734 inchesTest load ...............49.54.6 lbs.

at 1.683 inchesExhaust valve spring (with rotocap),

Free length ............ 2.240 inchesTest load .............. 80.1-87.1 lbs.

at 1.456 inches

Fig. 33-Cut-away view showing typicalinstallation of a valve rotator.

Fig. 34-View showingtiming marks on timinggear train of early 9-275tractor equipped with in-jection pump having pneu.matic governor . Refer also

to Fig. 35.

1. Crankshaft gear2. Camshaft gear3. Idler gear4. Injection pump gear

Paragraphs 51-56

oil hole in bushing aligns with oil holein valve lever and ream bushings afterinstallation to an inside diameter of0.751-0.752.

On all models, the end of the valve

lever which contacts the vahr• cat' be

refinished, if necessary, providing the

original contour is carefully niaintaiue,i.

Check the valve levers and valve

lever shafts against the values which

follow:

Valve lever bore 3.751-0.75?Lever shaft diameter . 0.748-0.749Lever diametral

clearance .......... 0.002-0.004

VALVE ROTATORS

Series 424-444-2424-2444-354Non-Diesel54. Positive type valve rotators

("Rotocaps") are factory installed onthe exhaust valves in these engines.

Normal servicing of the valve rota-tors consists of renewing the units. Itis important, however, to observe thevalve action after the engine is started.Rotator action can be considered satis-factory if the valve rotates a slightamount each time the valve opens. Acut-away view of a typical "Rotocap"installation is shown in Fig. 33.

VALVE TIMING

All Models55. Valves are properly timed when

the single punch marked tooth on thecamshaft gear is meshed with thesingle punch marked tooth space oncrankshaft gear as shown in Fig. 34, 36and 40.

TIMING GEAR COVER

Series B-275-B -414-354-364-384Diesel

56. To remove the timing gear cover,first remove the front support, axleand radiator assembly as follows: Draincooling system, then on Series B-275

21


Paragraphs 57-58

and B-414, raise hood and disconnectheadlight and horn wires at junction onfront support, then unclip loom fromradiator. Remove cotter pins from endsof stay rod slides, remove hood pivotbolts and remove hood. Do not lose thepivot bolt spacers. Disconnect radiatorbrace and on Series B-275, disconnectthe fuel filter bracket from radiator. OnSeries 354, 364 and 384, remove hoodand radiator grille. Disconnect groundlead, horn wire and move the harnessback to the engine, then disconnect aircleaner hose. On all models, disconnectupper and lower hoses from radiator.Disconnect the drag link or powersteering cylinder, if so equipped, fromleft steering arm. Support tractor,attach hoist to the front support, axleand radiator assembly, then unboltfront support and move assembly awayfrom tractor.

Remove alternator or generator ad-justing strap, then remove belt fromalternator or generator and let belthang on water pump. Loosen waterpump pulley flange or the belt adjust-ing pulley on models so equipped, andremove water pump belt from crank-shaft pulley. Unbolt and remove waterpump. Remove the breather line whichruns from injection pump gear cover toinlet manifold, then unbolt and removeinjection pump gear cover.

NOTE: Notice the size and locationof the cap screws as they are removed.

Remove crank nut, crankshaft pulley,woodruff key and two front oil pan capscrews. Unbolt and remove front coveras shown in Fig. 35.

When installing new oil seal in tim-ing gear cover, install same with lipfacing inward.

Series B-414 -354 Non -Diesel57. To remove the timing gear cover,

first remove the front support, axleand radiator assembly as follows: Draincooling system, then on Series B-414,raise hood and disconnect headlightwires and horn wire (if so equipped) atjunction on front support, then unclipwiring loom. Remove cotter pins fromends of stay rod slides, remove hoodpivot bolts and remove hood. Do notlose the pivot bolt spacers. Disconnectupper radiator brace. On Series 354,remove hood and radiator grille. Dis-connect ground lead, horn wire andmove the harness back to the engine,then disconnect air cleaner hose. Onboth series, disconnect upper and lowerradiator hoses from radiator. Discon-nect drag link, or power steering cylin-der if so equipped, from left steeringarm. Support tractor, attach hoist tofront support, axle and radiator assem-bly, then unbolt front support and


move assembly away from tractor.Remove fan blades, loosen water

pump pulley adjusting flange andremove water pump drive belt. Unclipwiring loom from water pump. Removecrankshaft pulley and the two front oilpan bolts. Unbolt and remove timinggear cover.

NOTE: Identify cap screws as theyare removed . Refer to Fig. 36.

When installing new oil seal in tim-ing gear cover, install same with lipfacing inward.

Series 424-444-2424-2444 Diesel58. To remove the timing gear cover,

first remove the front support, axleand radiator assembly as follows: Draincooling system, remove hood anddisconnect radiator hoses. Disconnectthe headlight wires and unbolt theradiator brace and fan shroud fromradiator. On tractors equipped withmechanical steering, drive roll pin fromforward yoke of front steering shaftuniversal and remove cap screws fromfront steering shaft support. Drivefront universal from steering worm

Fig. 35-View showingtiming gear train of IntoB-275 and all 8.414, 424,444, 2424, 2444, 354, 364and 384 tractors equippedwith injection pump hev.ing mechanical governor.Timing marks are similarto those shown In Fig. 34.

1. Crankshaft gear2. Camshaft gear3. Idler gear4. Injection pump gear5. Hydraulic pump gear

shaft. If tractor is equipped with hydro-static steering, disconnect the steeringcylinder hoses, then cap and plug allopenings to prevent dirt from enteringsystem.

Then, on all tractors, place woodblocks between steering gear housingand axle to prevent tipping. Using asuitable jack, support tractor underclutch housing . Unbolt stayrod bracketfrom clutch housing and steering gearhousing from front of engine. Raiseengine until crankshaft pulley will clearsteering gear housing , then roll assem-bly from tractor.

Remove generator or alternator ad-justing strap, then remove drive beltfrom pulley and let belt hang on waterpump. Loosen water pump belt adjust-ing pulley and remove water pump beltfrom crankshaft pulley. Unbolt andremove water pump. Remove thebreather line which runs from injectionpump gear cover to intake manifold,then unbolt and remove injection pumpgear cover. Remove crankshaft pulleynut, pulley and Woodruff key. Unboltand remove timing gear cover.

When installing new oil seal in tim-

Fig. 36-View of 8.414and 354 non-diesel enginegear train . Note timingmarks on gears (1) and (2).

S. Governor housing screwsI. Crankshaft gear2. Camshaft gear3. Idler gear4. Governor gear5. Hydraulic pump gear

eas

Me

22



ing gear cover, install same with lipfacing inward.

Series 424-444-2424-2444Non-Diesel

59. To remove the timing gear cover,first remove the front support, axleand radiator assembly as follows: Draincooling system, remove hood and dis-connect radiator hoses. Disconnect theheadlight wires and unbolt the radiatorbrace and fan shroud from radiator. Ontractors equipped with mechanicalsteering, drive roll pin from forwardyoke of front steering shaft universaland remove cap screws from frontsteering shaft support. Drive frontuniversal from steering worm shaft.

If tractor is equipped with hydro-static steering, disconnect the steeringcylinder hoses, then cap and plug allopenings to prevent dirt from enteringsystem.

Then, on all tractors, place woodblocks between steering gear housingand axle to prevent tipping. Supporttractor under clutch housing with asuitable jack. Unbolt stay rod bracketfrom clutch housing and steering gearhousing from front of engine. Raiseengine until crankshaft pulley will clearsteering gear housing, then roll assem-bly from tractor.

Remove generator or alternator ad-justing strap, then remove the drivebelt. Unbolt and remove water pump

and governor housing. After firstremoving the crank nut, attach a suit-able puller and remove crankshaftpulley and Woodruff key. Unbolt andremove the timing gear cover fromengine.

Extra care must be taken wheninstalling the oil seal in timing gearcover, so as not to distort or bend thecover. Install seal with lip of same fac-ing inward toward timing gears.

NOTE: A wear ring is furnished withthe new oil seal. Ring must be pressedon sealing surface of crankshaft pulley.

When reassembling, leave the coverretaining cap screws loose until crank-shaft pulley has been installed. Thiswill facilitate centering the seal withrespect to the pulley.

TIMING GEARS

All Series Except 424-444-2424-2444 Non- Diesel

60. CAMSHAFT GEAR . To removethe camshaft gear , first remove timinggear cover as outlined in paragraphs56, 57 or 58. Remove tappet cover,valve levers and shaft assembly andpush rods. Drain and remove oil pan,then unbolt and remove oil pump.Check camshaft end play which shouldbe 0.008-0.017. If end play is excessive,

Paragraphs 59-63

renew thrust plate after camshaft gearis removed . Turn camshaft until holesin gear align with thrust plate capscrews , then remove the cap screws.Carefully pull camshaft from cylinderblock and catch each tappet as the cam-shaft is removed . Press camshaft out ofgear and remove Woodruff key andthrust plate.

When installing camshaft gear, presssame on camshaft until it bottomsagainst shoulder on camshaft- Installcamshaft and align timing marks asshown in Fig. 34 or 36.

61. CRANKSHAFT GEAR. To mmove the crankshaft gear, first removetiming gear cover as outlined in par:,graphs 56, 57 or 5b. The arankshaitgear has two tapped holes to providefor removal and can be removed at thistime by using a suitable puller.

When reinstalling crankshaft gear,align timing marks as shown in Fig. 34,or 36.

62. IDLER GEAR . The idler gear(3-Fig. 34 or 36) can be removed afterthe timing gear cover has been re-moved as outlined in paragraphs 56, 57or 58. Refer to Fig. 37 for a view of theremoved gear and shaft. Prior to in-stalling gear and shaft, inspect theHeli-Coil insert and renew ii necessary.

On diesel engines, align timing markson all gears as shown in Fig. 34 wheninstalling idler gear. When installingidler gear shaft, be sure dowel pin(P-Fig. 37) in shaft enters hole(H-Fig. 38) in cylinder block- Tightenthe retaining cap screw to a torque of75 ft.-lbs. Operating clearance of gearon shaft is 0.0015-0.0028. If clearance isexcessive, renew gear and/or shaft.

63. INJECTION PUMP GEAR. Referto Fig. 35 or 39 for views of the twotypes of injection pump drive gears

l

Fig. 39-Injection pump drive gear used onearly 6-375 tractors equipped with injection

pump having pneumatic governor.

1. Cap screws 3, Pump gear2. Hub groove 4. Timing pointer

23

Fig. 37-Removed idlergear and shaft. Pin (P) en-ters oil hole in cylinderblock shown in Fig. 38.Diesel engine gear Isshown, however, B-414and 354 non-diesel gear Is

similar.

Fig. 38 -Hole (H) acceptsthe pin which is on rearside of idler gear shaft.

Peter to Fig. 37.


Paragraphs 64-66 INTERNATIONAL HARVESTER

that have been used . In both cases, itwill he necessary to remove the timinggear cover as outlined in paragraphs 56and 58 before gear can be removed.

When reinstalling the gear andtiming pointer shown in Fig. 39, referto paragraph 103 for injection pumptiming procedure.


64. CAMSHAFT GEAR . To removethe camshaft gear, first remove timinggear cover as outlined in paragraph 59.Remove the valve cover, valve leversand shaft assembly, push rods , oil panand oil pump. Push tappets up intotheir bores. Check camshaft end playwhich should be 0.003-0.012. If end playis excessive , renew thrust plate aftercamshaft gear is removed. Workingthrough openings in camshaft gear,remove the cap screws retaining theshaft thrust plate to crankcase. Care-fully withdraw camshaft and gearassembly and catch each tappet asshaft is removed. Gear can now beremoved from camshaft by using a suit-able press.

When reassembling, mesh the singlepunch marked tooth on camshaft gearwith single punch marked tooth spaceon crankshaft gear and the doublepunch marked tooth on camshaft gearwith the double punch marked toothspace on the governor and ignition unitdrive gear. Refer to Fig. 40.

65. CRANKSHAFT GEAR. To re-move the crankshaft gear , first removeengine from tractor as outlined in para-graph 38. Then , remove oil pan, oilpump, timing gear cover, clutch, fly-wheel and rear oil seal assembly.Remove connecting rod caps and mainbearing caps and lift crankshaft fromcylinder block, The gear can now beremoved from crankshaft by using asuitable press.

When reinstalling crankshaft in cylin-der block, align timing marks as shownin Fig. 40.

CAMSHAFT

All Series Except 424-444-2424-2444 Non - Diesel

66. If the camshaft only is to beremoved, same can be done withoutremoving engine from tractor and theprocedure for doing so is given in para-graph 60. However, if service isrequired on the camshaft bushingsand/or expansion plug (4-Fig. 41)located at the rear of camshaft, removethe engine as outlined in paragraphs35, 36 or 37.

With the engine removed, removecamshaft as outlined in paragraph 60.Then, unbolt clutch from flywheel andflywheel from crankshaft. Bump outexpansion plug.

NOTE: Camshaft bushings are fur-nished semi -finished for service andmust be align reamed after installation.

When installing the bushings, besure oil holes in same align with oilholes in cylinder block. Install the frontand rear bushings with the "FRONT"marking toward front of engine and besure front of rear bushing is flush withthe front of its bore in order to allowroom for the expansion plug installa-tion.

Fig. 40-View showingtiming marks on timinggear train of Series 424,444, 2424 and 2444 non-

diesel engine.

Fig. 41-Crankshaft rearoil seal and retainer in-stalled . Note camshaft ex-

pansion plug.

1, Crankshaft2. Oil seal3. Retainer4. Expansion plug

Specifications for the camshaft andcamshaft bushings are as follows:

Camshaft Journal Diameter,Front ...................1.811-1.812Center.. ................ 1.577-1.578Rear .................... 1.499-1.500

Camshaft Bushing (Reamed I.D.),Front ................. 1.8135-1.8145Center ................1.5795-1.5805Rear .................. 1.5015-1.5025

Camshaft End Play ........0.008-0.017Gear Backlash ........... 0.0025-0.0045Journal Operating

Clearance ............. 0.0015-0.0035

When installing the rear expansionplug, use sealing compound on plug andseat . Install camshaft and gear with the

ee

W

24



timing marks aligned as shown in Fig.34 or 36.


67. If camshaft only is to beremoved, same can be done withoutremoving engine from tractor and theprocedure for doing so is given in para-graph 64. The camshaft front journalrides in a renewable bushing while theintermediate and rear camshaft jour-nals ride directly in the crankcasebores. The bushing can be renewedafter removing the camshaft.

However, if the expansion plug(4-Fig. 41) located at rear of camshaftis to be renewed, remove engine asoutlined in paragraph 38.With engine removed, remove cam-

shaft as outlined in paragraph 64.Then, unbolt and remove the clutch,flywheel and engine rear support plate.Bump out expansion plug.

When installing the rear expansionplug, use sealing compound on plug andseat.

The camshaft front bushing is pre-sized and when correctly installed, nofinal sizing is required. When installingthe bushing, make certain that oil holesin bushing align with oil holes in cylin-der block.

Specifications for the camshaft are asfollows:

Camshaft Journal Diameter,Front ................ 1.811-1.812Center ................ 1.577-1.578Rear .... ................ 1.499-1.500

Camshaft End Play ........0.003-0.012Journal Operating

Clearance ........... 0.0009-0 .0054

Install camshaft and gear with timingmarks aligned as shown in Fig. 40.

ROD AND PISTON UNITS

All Models68. Connecting rod and piston units

are removed from above after cylinderhead, oil pan and oil pump have beenremoved. Cylinder numbers are markedon rods and caps. When reassembling,make certain that numbers are inregister and on all except Series 424,444, 2424 and 2444 non-diesel engines,numbers are on the side opposite cam-shaft. On Series 424, 444, 2424 and2444 non-diesel engines, rod and capnumbers are on camshaft side ofengine. Torque rod bolts to 30-35ft.-lbs. on Series B-275 and secure withlock wire. Rod bolts on all Series B-14,354, 364 and 384 are self-locking andshould be torqued to 40-45 ft.-Ibs.Series 424, 444, 2424 and 2444 non-

diesel rod bolts are self-locking andshould be tightened to a torque of 43-49ft.-Ibs. Tighten the self-locking rodbolts used in Series 424, 444, 2424 and2444 diesel engines to a torque of 40-45ft.-lbs.

PISTONS, SLEEVES AND RINGS

All Series Except 424 -444-2424-2444 Non- Diesel

69. Pistons and sleeves are availableas individual parts or as a matched set.Recommended clearance of new pistonsin new sleeves is 0.0048-0.0056 forB-275 diesel engines, or 0.0031-0.0039for 364, 384, 424, 2424 and 2444 dieselengines and Series B-414 and 354 dieseland non-diesel engines, when measuredbetween piston skirt and cylindersleeve at 90 degrees to piston pin.

NOTE: As individual replacements,fit pistons to a clearance of 0.0031-0.0047.

70. The wet type cylinder sleevesshould be renewed when out-of-roundexceeds 0.008 and/or taper exceeds0.005.

Special pullers are available to re-move the wet type sleeves from aboveafter the pistons have been removed.Before installing sleeves, check to makecertain that the counterbore at top andsealing ring groove at the bottom areclean and free from foreign material.All sleeves should enter crankcasebores full depth and should be free torotate by hand when tried in boreswithout sealing rings. After makingtrial installation without sealing rings,remove the sleeves, wet new sealingrings and end of sleeves with a thicksoap solution or equivalent and installsleeves. If sealing ring is in place andnot pinched, very little hand pressureis required to press the sleeve com-pletely into place. Normally, the top ofthe sleeves will extend 0.003-0.007above the machined top surface of thecylinder block. If sleeve stand out isexcessive, check for foreign materialunder the sleeve flange.

NOTE: The cylinder head gasketforms the upper cylinder sleeve seal,and excessive sleeve stand out willresult in coolant leakage.

To test lower sealing rings forproper installation, fill crankcase (cylin-der block) water jacket with cold waterand check for leaks near bottom ofsleeves.

71. Diesel engine pistons are fittedwith five rings; three compression andtwo oil control rings. Gasoline enginepistons are fitted with four rings; threecompression and one oil control ring.

Specifications are as follows:

Paragraphs 67-72

Ring Width (8-275 Diesel)Compression rings ... - .0.0930-0.0935Top oil control ................. 0.18752nd oil control .......... 0.1860-0.1865Ring Width (B-014-424-444-2424-

2444-354364-384 Diesel)Compression rings - - .0.0927 0.0937Top oil control. . , , , , . 0.1865-0.18752nd oil control .......... 0.1865-0.1875Ring Width ( B-414-354 Non -Diesel)Compression rings ......0.0930-0.0935Oil control ............ 0.1860-0.1865Ring End Gap (B-275 Diesel)Compression rings ....0.0120.01ETop oil control U.015-0.0462nd oil control 0.012 0.01,Ring End Gap (8.414424-444-2424-

2444-354-364-384 Diesel)Compression rings .........0.010-0.015Top oil control 0.010 0.0152nd oil control U.U10-U.U1SRing End Gap (8914-354

Non-Diesel)Compression ringsOil control .... _ ......0.012-0.018Ring Side Clearance (8-275 Diesel)Top compression ......... 0.0028-0.00392nd compression ......... 0.0032-0.00433rd compression .... _ .0.0024-0.0035Top oil control ........... 0.0015-0.00452nd oil control .... ....... 0.0012-0.0023Ring Side Clearance (B-414-424-444-

2424-2444-354-364384 Diesel)Top compression ........ 0.0035-0.0055Other compression .......0.0028-0.0048Top oil control 0.0012-0.00282nd oil control 0.0012-0.0028Ring Side Clearance (8914-354

Non-Diesel)Compression rings 0.00 18 0.0035Oil control - - - 0.0025-0.0040

When installing piston rings, be surethat the largest diameter of tikestepped top compression ring is onbottom side. Position rings so that endgaps are 90 degrees from thrust side ofpiston and are 180 degrees from oneanother.

PISTONS AND RINGS


72. The cam ground aluminum alloypistons operate directly in the blockbores and are available in standard sireas well as oversizes of 0.010, 0,020,0.030 and 0.040. With pistons removcdfrom engine, measure cylinder boresboth parallel and at right angle to thecrankshaft centerline. If taper from topof cylinder to bottom of piston travelexceeds 0.006, or if outof-round mornthan 0.006, rehure cylinder to uemlarger size.

NOTE: When reboring , bore cylinderto within approximately 0.001 of desired

25


Paragraphs 73-81

size to allow finish honing.

To fit pistons in bores, attach a 0.001ribbon gage (1/2-inch wide) to a springscale, then invert piston and positionfeeler ribbon at 90 degrees from thepiston pin hole. Insert piston and feelerribbon into cylinder bore until piston isahout 3 inches below top of cylinderblock. Keep piston pin hole parallelwith crankshaft. Now withdraw thefeeler ribbon by pulling straight up onthe spring scale and note reading onscale as feeler ribbon is being with-drawn. Pistons are correctly fitted tothe normal 0.001-0.002 clearance whenthe spring scale pull reads 2-6 tbs.

73. Pistons are fitted with two com-pression rings and one oil control ring.The two compression rings have an endgap of 0.010-0.020 and the oil controlring end gap should be 0.018-0.028.Side clearance of rings in pistongrooves is 0.003-0.0045 for the top com-pression ring, 0.0015-0.003 for thesecond compression ring and 0.002-0.0035 for the oil control ring.

Piston rings are available in standardsize as well as oversizes of 0.010, 0.020,0.030 and 0.040.

PISTON PINS

All Models74. Piston pins are retained in piston

bosses by snap rings and are availablein standard size and 0.005 oversize. The0.005 oversize pin is identified by aplus 5 marking on one end.

75. On Series 424, 444, 2424 and 2444non-diesel engines standard piston pindiameter is 0.8591-0.8593. Piston pinshould have a diametral clearance of0.0002 in piston bosses and 0.0004 inconnecting rod bushing. Maximum al-lowable clearance of pin in piston is0.0025 and in rod is 0.003. Total clear-ance between end of piston pin andsnap ring is 0.005-0.055.

76. On all other series engines,standard piston pin diameter is 1.1021-1.1024 and should have a diametralclearance of 0.0005-0.0008 in the con-necting rod bushing and be a hard handpush fit in the piston at a room tem-perature of 68 degrees F. Fit the over-size pins in the same manner. Totalclearance between end of piston pinand snap ring is 0.012-0.020.

CONNECTING RODS ANDBEARINGS

All Series Except 424-444-2424-2444 Non-Diesel

77. Connecting rod bearings are ofthe slip-in, precision type, renewablefrom below after removing the oil panand connecting rod bearing caps. When

installing new inserts, make certainthat the projections on same engageslots in connecting rod and cap andthat the cylinder identifying numbers.on rod and cap are in register and faceopposite camshaft side of engine. Con-necting rod bearings are available instandard size as well as undersizes of0.015 and 0.030. Bearing inserts shouldhave a running clearance of 0.001-0.0029 on the 1.7495-1.750 diametercrankshaft crankpins. Rod side play is0.003-0.010.

Piston pin bushing is furnished semi-finished and must be reamed afterinstallation to provide 0.0005-0.0008clearance for the piston pin. Be sure oilholes in bushing and connecting rodalign after bushing is installed.

Torque the connecting rod bolts to30-35 ft.-lbs. for Series B-275 andsecure with lockwire. Rod bolts, for allSeries B-414, 354, 364 and 384 enginesand Series 424, 444, 2424 and 2444diesels, are self-locking and should betorqued to 40-45 ft.-lbs.

Series 424 -444-2424-2444Non-Diesel

78. Connecting rod bearings are ofthe slip-in, precision type, renewablefrom below after removing the oil panand connecting rod bearing caps. Wheninstalling new inserts, make certainthat the projections on same engageslots in connecting rod and cap andthat cylinder identifying numbers onrod and cap are in register and face thecamshaft side of engine. Connecting rodbearings are available in standard sizeas well as undersizes of 0.002, 0.010,0.020 and 0.030. Bearing inserts shouldhave a running clearance of 0.0009-0.0039 on the 2.059-2.060 standarddiameter crankshaft crankpins. Rodside play should be 0.005-0.014.

Piston pin bushing is furnished semi-finished and must be reamed afterinstallation to provide 0.0004 clearancefor piston pin. Be sure oil holes inbushing and connecting rod align afterbushing is installed.

Tighten the self-locking rod boltsevenly to a torque of 43-49 ft.-lbs.

CRANKSHAFT AND MAINBEARINGS


79. The crankshaft is supported infive slip-in, precision type main bear-ings , renewable from below afterremoving the oil pan, oil pump andmain bearing caps. Normal crankshaftend play of 0.004-0.008 is controlled bythe flanged rear main bearing inserts.Excessive crankshaft end play is cor-


rected by renewing the inserts. Mainbearings are available in standardsize as well as undersizes of 0.015 and0.030.

Crankshaft removal requires removalof engine from tractor as outlined inparagraphs 35, 36 or 37, then removeoil pan, oil pump, timing gear cover,clutch, flywheel and rear oil seal.Remove connecting rod caps and mainbearing caps and lift crankshaft fromcylinder block.

NOTE: Check main bearing caps andif they are not Identified , do so beforeremoving.

Check the crankshaft and bearingsagainst the values which follow:

Crankpin diameter ........ 1.7495-1.750Rod bearing clearance .....0.001-0.0029Main journal diameter ...... 2.124-2.125Main bearing clearance ..... 0.002-0.004Crankshaft end play ........ 0.004-0.008Journal max. allowable

taper (per inch) .............. 0.0015Journal max. out-of-round ........ 0.005Crankshaft max. runout

(center main) ................ 0.0008

Connecting rod and main bearingbolt torque values are as follows:Series B-275 rod bolts, 30-35 ft:lbs.;main bearing bolts, 70-75 ft.-lbs. AllSeries B-414, 354, 364 and 384 andSeries 424, 444, 2424 and 2444 dieselrod bolts, 40-45 ft.-lbs.; main bearingbolt torque is as follows:

Pitch bolt .......... ft.-Ibs.Place bolt ................ 80-85 ft.-Ibs.

NOTE: Refer to paragraph 80 for boltidentification.

80. On some series of engines, twotypes of main bearings bolts are used.The PITCH bolt has a standard bolthead with a washer face. The threaddiameter is larger than the shank. Thistype attains its tension by stretching ofthe shank and should be torqued to 70-75 ft.-lbs. The PLACE bolt has a headthat is either notched or concave andthe shank and thread diameter arenearly the same. This type attains itstension by bending the bolt head andshould be torqued to 80-85 ft.-lbs.


81. The crankshaft is supported inthree slip-in, precision type main bear-ings, renewable from below afterremoving the oil pan, rear oil sealretainer plate and main bearing caps.Normal crankshaft end play of 0.004-0.010 is controlled by the flanged rearmain bearing inserts. Excessive endplay is corrected by renewing theinserts. Main bearings are available instandard size as well as undersizes of

26



0.002, 0.010, 0.020 and 0.030.Crankshaft removal requires removal

of engine from tractor as outlined inparagraph 38. Then, remove the oilpan, oil pump, timing gear cover,clutch, flywheel, engine rear supportplate and rear oil seal, Remove con-necting rod caps and main bearing capsand lift crankshaft from cylinder block.

Check the crankshaft and bearingsagainst the values which follow:

Crankpin diameter ......... 2.059-2.060Rod bearing clearance ....0.0009-0.0039Main journal diameter, . ..2.6235-2.6245Main bearing clearance ....0.009-0.0039Journal max. allowable

taper ........................0.003Journal max. outof-

round ........................0.003Crankshaft end play. . ...... 0.004-0.010

0----34

l^22

7

5

22

0-10

e^12

Fig. 42-Exploded view of typical oil pumpused on all series except 424, 444, 2424and 2444 non-diesel engines . Items 5,10, 12, 19, 20 and 22 are used on early typepump. NOTE: On early B-275 oil pump, aball was used In place of plunger (17) toregulate oil pressure. Diesel and non-diesel

pumps are basically similar.

3. Pinion4. Rol pin 15. Gearcase5. Shaft 16 . Gasket6. Body 17. Pressure regulator7. Shaft assy. valve8. Plug 18. Pressure regulator9. Gasket spring10. Gear 19. Pump cover11. Gear 20. Screen asay12. Retainer 22. Woodruff it,,13. Idler shaft 23. Pump cover14. Roll pin 24. Screen assy-

Connecting rod bolts and main bear-ing bolts should be tightened evenlyto a torque of 43-49 ft:lbs. for the rodbolts and 75-80 ft.-Ibs. for the mainbearing bolts.

CRANKSHAFT REAR OIL SEAL


82. The lip type oil seal is containedin a one -piece retainer which is doweledand bolted to the rear of the cylinderblock as shown in Fig. 41.

The procedure for renewing the sealis evident after splitting the enginefrom clutch housing and removing theclutch and flywheel.

When installing seal, press same intoretainer until it bottoms against shoul-der in retainer . Use a sealant onretainer and lubricate lip of seal priorto installing. The bottom face ofretainer must register within 0.020with face of crankcase.


83. The lip type oil seal is containedin a one-piece retainer which is boltedto the rear of the crankcase.

To renew the oil seal , first split theengine from the clutch housing, thenremove the clutch and flywheel. Unboltand remove the oil seal and retainerassembly.

To install the oil seal and retainer,International Harvester recommendsthe following procedure: Apply sealeron gasket and retainer and using oilseal driver (IH tool No. FES 6-15) toline up retainer with crankshaft oil sealsurface, install retainer to the crank-case. With the driver remaining on thecrankshaft and in the retainer, tightenthe cap screws in sequence (one acrossfrom the other) rotating the driver inretainer at the same time. If binding ordriver occurs during the tightening ofthe cap screws, loosen cap screws andthen repeat the tightening procedure.Remove the seal driver after all capscrews have been tightened.

Lubricate the oil seal, crankshaftflange and seal bore in the retainer.Install seal on crankshaft flange, thenpush seal forward by hand until thesealing lip on seal outer diameter hasentered the chamfer on the retaineraround the entire circumference of theseal. Position oil seal driver on crank-shaft flange and drive seal forward inretainer until the shoulder of the drivercontacts the rear surface of crankshaftflange.

NOTE: If special seal driver (IH toolNo. FES 6-15 ) is not available , seal maybe installed as follows : Before rernov-

Paragraphs 82-85

ing the old seal from retainer , note thedepth of old seal in retainer . Install newseal in retainer In same position as oldseal. Apply sealer to gasket andretainer, then install seal and retaineron crankshaft flange. Slide assemblyforvv.vo on in utskshalt tl.`inga a: r.1 ;...cap screws. Center oil seal io c,nnrtshaft flange and tighten cap screws.

FLYWHEEL

All Models84. The flywheel can be removed

after splitting engine from clutch hous-ing and removing the clutch. To installthe flywheel ring gear, heat same toapproximately 500 degrees F. OnSeries 424, 444, 2424 and 2444 non-diesel engines, tighten flywheel bolts toa torque of 45-52 ft: Ibs. Flywheel boltson all other series engines should hetightened to a torque of 65-70 ft,lhs.

OIL PUMP AND RELIEF VALVE

All Models85. The gear type oil pump is gear

driven from a pinion on the camshaftand removal is evident after removingthe oil pan. Overhaul of the pump isobvious after reference to Figs. 42 and43 and to the specifications whichfollow:

% 69 ram

9

Fig. 43-Exploded view of oil pump used inSeries 424, 444, 2424 and 2444 non-diesel

engines.

I Screen uscy. Pc :.I. ...: ,2. l "d plate N,.. . n3Gasket Im ... . .

. 5. Relief valve spring 10. Pin5. R,be Ne t1. Gear d shah6 Idlo

. Idler Kear 1-1

27


Paragraphs 86-88

Series 424-044-2424-2444 non-diesel:Gear diametral

clearance ....... ......0.0068-0.0108Gear to end plate end

play ................. 0.0035-0.006Gear backlash .... ........0.004-0.006Drive shaft operating

clearance. . .... ... .... 0.001-0.0035Idler gear to shaft

clearance ...............0.0015-0.003Relief valve spring freelength ...................2.398

Relief valve opening

pressure .45-55 psiAll other series:Gear diametral

clearance - - - .0.0053 0.0083Gear to end plate endplay ...... .........0.0035-0.006

Gear backlash ........... 0.003-0.006Drive pinion to

camshaft. backlash .....0.008-0.012Drive shaft. operating

clearance. .... .... ..0.002-0.0035Idler gear to shaft

operating clearance ....0.0015-0.0035Relief valve spring free

length (ball type) ......... 2-11/32 in.Relief valve spring free

length (plunger type) ...... 2-9/16 in.Relief valve opening

pressure .................. 3035 psi

GOVERNOR(NON-DIESEL)

Series B-414-354The Series B-014 and 354 non-diesel

tractors are equipped with a flyweighttype governor which is mounted on left,front of engine as shown in Fig. 44.


86. SPEED ADJUSTMENT . Prior tomaking any speed adjustments, checkall operating linkage for lost motion orbinding and correct any defects whichmay be present.

Start engine and bring to operatingtemperature , place throttle lever in thehigh idle position and check the enginehigh idle speed which should be 2200rpm. Move the throttle lever to the lowidle position and check the engine lowidle speed which should be 500-525rpm.

If engine speeds are not as stated,remove side cover from governor hous-ing and adjust screw (H-Fig. 44) tocorrect engine high idle rpm and/or.screw (L) to correct engine low idlerpm.

No surge adjustment is provided ongovernor assembly.

87. R&R AND OVERHAUL. Toremove the governor assembly, it isfirst necessary to remove the timinggear cover as outlined in paragraph 57.

With timing gear cover off, removedrive gear retaining nut and drivegear. Disconnect throttle control rodand carburetor rod from governorlevers, then remove the cap screws(S-Fig. 36) and pull governor assem-bly from engine front plate. Bearing(3-Fig. 45), weight carrier, weights,shaft and thrust bearing assembly canbe removed from housing after remov-ing snap ring (3). Rockshaft lever (23)and spring lever (25) and their shaftscan be removed after loosening theclamping cap screws. Any further dis-assembly required will be obvious.

Oil seals (17) are installed with lipstoward inside. Use sealant on outeredge of expansion plug (21) whenrenewing.


The centrifugal flyweight type gover-nor is mounted on the right front faceof engine and is driven by the enginetiming gear train. Before attemptingany governor adjustments, check theoperating linkage and remove anybinding or lost motion.

88. ADJUSTMENT. To adjust thegovernor proceed as follows: With en-gine stopped, place the speed changelever in wide open position and removeclevis pin (3-Fig. 46) from the gover-nor rockshaft arm. Hold the rockshaftarm and carburetor throttle rod (1) asfar towards carburetor as they will go.If pin holes are not in alignment, adjustthe length of rod (1) until pin (3) willslide freely into place. Then, lengthenrod one full turn and install clevis pin.

With engine running and speed con-trol lever in wide open position, adjustthe high idle adjusting screw (16) toobtain a high idle speed of 2200 rpmand then, lock the screw in place withthe jam nut.

With engine running at low idlespeed (425 rpm), quickly move thespeed control lever to high idle posi-tion. If the engine surges more thantwice, adjust the governor bumperspring (25) as follows: Stop engine andremove acorn nut from bumper springadjusting screw (26). Loosen jam nut

Fig. 45-Exploded view of the governor used on Series 8-414 and 354 non-diesel engines.

1. Nut 4. Shaft 17- Oil seal 25. Spring leverFig. 44- Series 8-414 and 354 non-diesel 2 Drive gear 10 Thn,.al washer 18. Rockshaft brg. 25 Gasketgovernor which mounts on left side of 3. Snap ring & bearing 12. Sleeve 20. Pushing 27. Housing coverengine is shown with side cover off. Note

5. Governor carrier6 Pin

13. Thrust bearing14 G k t

21. Expansion plug22 G i

28. Rockshaft brg.29 G i b l

high idle (H) and low idle (L) adjusting.

7. Governor weight. as e

is Speed change leverovernor spr. ng

23. Rockshaft leverovernor spr. ng to

30. RockshaftScrews. 8. Woodruff key I6. Woodruff key 24. Key 31. Control rod

28



and turn screw ( 26) in just enough tostop excessive surging . When thebumper spring screw is properly ad-justed , lock it in place with jam nutand install acorn nut.

89. R&R AND OVERHAUL. Removedistributor rap and mark location ofrotor. Then, unbolt and remove thedistributor and drive housing assemblyand mark location of slots in the igni-tion unit drive coupling on governorgear (19-Fig. 46) in relation to crank-case . This procedure will facilitate rein-stallation of governor gear in propertiming mesh with camshaft gear ifposition of crankshaft is not changedwhile governor is removed. Removethe governor speed control rod andcarburetor throttle rod. Remove thegrille side panels and loosen fan belt,then unbolt and remove the governorassembly from timing gear cover.

To disassemble the governor, firstremove the gear and flyweight assem-bly. Remove the nut and lock washerfrom the speed control lever and shaft(6), then withdraw shaft (6) from thegovernor spring lever (9) and lowspeed spring (17). Unhook high speedspring (10) from the rockshaft fork (4)and remove governor spring lever, lowspeed spring and high speed springfrom governor housing (15). Removethe fork (4) from rockshaft (5) and slidethe rockshaft from the housing. Thetwo needle bearings (14 and 22),"Oilite" bushing (13), and oil seals (12and 7) can now be renewed if neces-sary. Flyweights and pins should berenewed when excessive wear is evi-dent.

NOTE: A governor overhaul servicepackage (part No. 391021R93) is avail-able from International Harvester Co.

When reassembling the high speedspring and low speed spring to thegovernor spring lever, hook the upperend of high speed spring through bothholes in low speed spring as shown inFig. 47. Then, hook the lower end ofthe high speed spring in hole (A) ofrockshaft lever (fork). Install the springlever and low speed spring on the levershaft. The open ends of the high speedspring hooks must be toward thecenter of the governor housing.

The bushing in the crankcase whichsupports the governor and ignition unitdrive gear hub can be renewed whengovernor and ignition unit are off. TheI&T recommended clearance of gear.hub in bushing is 0.0015-0.002.

1

6

1511 12 / A

Fig. 46-Exploded view of the governor assembly used on Series 424, 444, 2424 and

18

1 3 /\ .'' \

2444

1. Throttle rod2. Clevis3. Clevis pin4. Rockshaft fork5. Rockshaft6. Speed change lever &

shaft7. Oil seal8. weather

Fig. 47-View showingcorrect installation of highspeed spring in Series424, 444, 2424 and 2444

non-diesel governor.

Paragraph 89

non-diesel engines.

9. S ring lever 17. Low specs spring 25 ii,. ury, r .po^.t,10. High speed spring 58. Flyweights 26 Ifumpar spelt11. Retainer 19. Governor gear & adjusting s, ,w12. Oil seal shaft assembly 27. Ac urn nut13. Bushing 20. Flyweight pin 26 . Shaft stop in14. Needle bearing 21. Plug 29 . Shaft spring pin15. Housing 22. Needle bearing 30. Shaft spring16. Speed adjusting 23. Fork retainer pin 31. Thrust hearingscrew 24 . Gasket 32. Thrust sleeve

Aseemble high sped 'pinson law speed spline wld,hook In pshion shown.

29


Paragraph 90-91

DIESEL

FUEL SYSTEM

Two types of injection pumps haveH-on used rm the 6275 tractor. On earlymodel tractors ( prior eng . ser. no.BD-144 /17289-A), a C.A. V. multipleplunger pump , fitted with a pneumaticgovernor was used . On later ModelB-275 tractors (eng. ser . no. BD-144/17289 - A and up), a C.A.V. distributortype injection pump having a mechani.cal type governor is used.

Series 424 , 444, 2424 , 2444, 8-414,354, 364 and 384 tractors also use theC.A.V. distributor pump.

When servicing any unit associatedwith the fuel system , the maintenanceof absolute cleanliness is of utmostimportance. Of equal importance is theavoidance of nicks or burrs on any ofthe working parts.

Probably the most important precau-tion that service personnel can impartto owners of diesel powered tractors, isto urge them to use an approved fuelthat is absolutely clean and free fromforeign material. Extra precaution shouldbe taken to make certain that no waterenters the fuel storage tanks . This lastprecaution is based on the fact that alldiesel fuels contain some sulphur.When water is mixed with sulphur,sulphuric acid is formed and the acidwill quickly erode the closely fittingparts of the Injection pump and noz-zles.

90. QUICK CHECK -UNITS ONTRACTOR. If the diesel engine doesnot start or does not run properly, andthe diesel fuel system is suspected asthe source of trouble, refer to the fol-lowing list of troubles and their pos-sible causes:

1. Sudden Stropping of Engine.a. Lack of fuel.h. Clogged fuel filter and/or lines.c. Faulty injection pump.H. Broken spring in by-pass valve.

2. Lack of Power.a. Improper injection pump tim-

ing.b. Inferior fuel.c. Faulty injection pump.d. Clogged fuel filter and/or lines.e. Weak or broken transfer pump

plunger spring.3. Engine Hard to Start.

a. Inferior fuelIn. Clogged fuel filter and/or lines.c. Improper injection pump tim-

ing.d. Faulty injection pump.

4. Irregular Engine Operation.

a


Weak or broken governorsprings.

b. Clogged fuel filter and/or lines.c. Faulty nozzle.d. Improper injection pump tim-

ing.e, Faulty injection pump.L Air leak in venturi vacuum

pipe or governor diaphragm.5. Engine Smokes or Knocks.

a. Improper injection pumping.

b. Faulty nozzle.c. Inferior fuel.

6. Excessive Fuel Consumption.

tim-

a. Improper injection pump tim-ing.

b. Faulty nozzle.Many of the problems are self-

explanatory; however, if the difficultypoints to the fuel filter, injection noz-zles and/or injection pump, refer to theappropriate paragraphs 91 through 122.

FILTER AND BLEEDING

All Models91. When fuel lines have been discon-

nected or the fuel flow interrupted,bleed trapped air from the system asfollows:

On early B-275 model tractors havingthe pneumatic governor, be sure thereis sufficient fuel in tank, loosen thesediment bowl and allow same to fill,then tighten bowl. Loosen bleed screw(I-Fig. 48) on top of fuel filter andoperate hand primer (P) until bubblefree fuel flows, then tighten bleedscrew. Loosen bleed screw (A) on injec-tion pump and operate hand primeruntil bubble free fuel flows, thentighten bleed screw.

On late Model B-275 tractors withthe mechanical governor and all 424,444, 2424, 2444, B-414, 354, 364 and 384tractors follow the same procedureexcept loosen both bleeder screws (Aand B-Fig. 49) on the injection pumpstarting with the bottom one first.Primer is incorporated in fuel pump

Fig. 48-Hand primer andbleed screw location oninjection pump having

pneumatic governor.

A. Bleed screwD. BreatherG. Governor1. Bleed screwP. Hand primerV. Venturi

which is mounted on right side ofengine.

NOTE : Models 424, 444 , 2424 and2444 diesel engines do not use theauxiliary fuel pump . Therefore , gravityflow must be used to vent the system.

On all models, loosen injector pres-sure lines at injectors, make sure shut

Fig. 49-Bleeder screws (A & B) on injectionpump having mechanical governor.

Fig. 50-When installing the diesel fuel filteron series 424, 444, 2424 or 2444 tractor,rotate filter element until rubber seal con-tacts filter mounting bracket, then tighten

element /a- to 'h-turn.

30



off control is in the operating positionand turn engine over with startingmotor until fuel escapes from line ends.Tighten the pressure line connections.

INJECTOR NOZZLES

Aa

All ModelsWARNING: Fuel leaves the Injection

nozzles with sufficient pressure topenetrate the skin. When testing, keepyour person clear of the nozzle spray.

92. TESTING AND LOCATING AFAULTY NOZZLE. If the engine doesnot run properly, and a faulty injectoris suspected, locate the faulty unit asfollows:

If one engine cylinder is misfiring, itis reasonable to suspect a faulty injec-tor. Generally, a faulty injector can belocated by loosening the high pressureline fitting on each nozzle holder inturn, thereby allowing fuel to escape atthe union rather than enter the cylin-der. As in checking spark plugs in aspark ignition engine , the faulty unit isthe one which, when its line isloosened , least affects the running ofthe engine.

93. Remove the suspected injectorfrom the engine as outlined in para-graph 99. If a suitable nozzle tester isavailable, check the unit as outlined inparagraphs 94, 95, 96, 97 and 98. If atester is not available, reconnect thefuel line to the injector and with thenozzle tip directed where it will do noharm, crank the engine with thestarting motor and observe the nozzlespray pattern.

If the spray patterns are ragged,unduly wet, streaky and/or not sym-metrical or, if nozzle dribbles, the

Fig. 51-Typical tester used to check andadjust injector nozzles.

1. Lockout 32. Screwdriver3. Adjusting screw 33. Nozzle tester

nozzle valve is not seating properly andsame should be cleaned and/or over-hauled.

94. NOZZLE TESTER . A completejob of testing and adjusting the nozzlerequires the use of a special tester suchas that shown in Fig. 51. The nozzleshould be tested for opening pressure,seat leakage, back leakage and spraypattern.

Operate the tester lever until oilflows, then attach the nozzle and holderassembly.

NOTE : Only clean approved oilshould be used in the tester tank.

Close the tester valve and apply afew quick strokes to the tester lever. Ifundue pressure is required to operatethe tester, the nozzle is plugged andsame should be serviced as outlined inparagraph 100.

95. OPENING PRESSURE. Whileoperating the tester lever, observe thegage pressure at which the sprayoccurs. The gage pressure should be2130 -2205 psi for models with pneu-matic governor , or 2350 -2425 for mod-els with mechanical governor. OnSeries B-275 or B-414 injectors, if pres-sure is not as specified remove cap nut(3-Fig. 52) and loosen locknut (5).Turn adjusting screw (6) either way, asrequired, to correct opening pressure.Refer also to Fig. 53.

On Series 354, 364 and 384 injectors,add or remove shims (6-Fig. 54) asrequired to obtain an opening pressureof 2350 psi.

96. SEAT LEAKAGE. To check seatleakage, operate tester until gage pres-sure is 150 psi below nozzle operating

13

Paragraphs 92-99

pressure and hold this pressure for 10seconds. Examine orifice and if drops offuel collect at pressures below thosespecified, the nozzle valve is not seat-ing properly and should be serviced asin paragraph 100.

97. BACK LEAKAGE. Test specifi-cations for used nozzles may vary, how-ever , if nozzle will pass the followingtest it may be considered satisfactory.

Pump up pressure on tester untilgage registers at least 1500 psi, then aspressure starts to drop, observe thetime it takes for the gage pressure todrop from 1500 to 1100 psi. A nozzle ingood condition should not lose toegiven amount of pressure iu le,d tl!au10 second s at 60 degrees F. llow-ever,bear in mind that higher temperncwvsmay give a time of less than the IUseconds.

If nozzle fails to meet the foregoingtest, service same as outlined in para-graph 100.

98. SPRAY PATTERN. Operate thetester handle at approximately 100strokes per minute and observe thenozzle spray pattern. If the spray pat-tern is unduly wet, streaky and/orragged , service the nozzle as outlinedin paragraph 100.

99. REMOVE AND REINSTALL.Raise or remove hood, then beforeloosening any fuel lines , wash the

Fig. 52-Exploded view of injector nozzleand holder . Refer to Fig . 53 for a cross- Fig. 53-Cross- sectional view of injector

sectional view. nozzle and holder assembly. Refer to Fiy. 52

1 Banjo boltfor an exploded view.

.2. Washers 8. Spindle 1. Banjo bolt 7 Spring3. Holder cap nut 9 . Holder 2. Washer 8. Spindle4. Washers 10. Valve 3. Cap nut 9. Holder5. Locknut 11. Valve holder 4. Washers 10. Valve6. Adjusting screw 12. Nozzle cap out 5. Locknut 11. Valve holder7. Spring 13 . Washer 6. Adjusting screw 12. Nozzle cap nut

31


Paragraph 100

nozzle holder and connections withclean diesel fuel. After disconnectingthe high pressure and leak -off lines,cover open ends of connections withcomposition caps to prevent the en-trance of dirt or other foreign material.On Series B-414, 354, 364 and 384,rrmwo foal filter from inlet manifold if:rn clhoI et+n or three injector is to heremoved. Remove the nozzle retainingnuts and carefully withdraw the nozzlefrom cylinder head, being careful not tostrike the tip end of the nozzle againstany hard surface . Use a suitable pullerif necessary.

Thoroughly clean the nozzle recess incylinder head before reinserting thenozzle and holder assembly. It is impor-tant that the seating surfaces of recessbe free of even the smallest particles ofcarbon which could cause the unit to becocked and result in blowby of hotgases. No hard or sharp tools should beused for cleaning . A piece of wooddowel or brass stock properly shaped isvery effective . Do not reuse the copperring gasket located between nozzle andprecombustion chamber holder , alwaysinstall a new one. Tighten the nozzleholder stud nuts to a torque of 40-50

10--l11--1 @- 7

1213 --®

kJ

fig. 54-Exploded view of injector nozzleand holder, used on 354, 364 and 384 diesel.

1. :anje holeaahrrs3. Holder eap mn1. spring rap

washerc Shim

1. Banjo bolt13. Washer14. Injector

h spindle9- holder

ul. Vnl..r.ll. valve holder12 Nozzle rap1:l Washer


ft. lbs. for Series B-275; or 30-35 ft.-lbs.for Series 81114, 424, 444, 2424, 2444,354, 364 and 384.

100. MINOR OVERHAUL (CLEAN-ING) OF NOZZLE VALVE ANDBODY . Hard or sharp tools, emerycloth, crocus cloth, grinding compoundsor abrasives of any kind should NEVERbe used in the cleaning of nozzles.

Wipe all dirt and loose carbon fromthe nozzle and holder assembly with aclean, lint free cloth. Carefully clampnozzle holder assembly in a soft jawedvise and remove the cap nut (3-Fig.52 or 54), On Series B-275, B-414, 424,444, 2424 and 2444, loosen jam nut(5-Fig. 52) and back-off the adjustingscrew (6) enough to relieve load fromspring (7). On Series 354, 364 and 384,back-off spring cap (4-Fig. 54) to re-lieve load from spring (7).

On all series remove the nozzle capnut (12-Fig. 52 or 54) and nozzle body(11). Normally, the nozzle valve (10)can be easily withdrawn from thenozzle body. If the valve cannot beeasily withdrawn, soak the assembly infuel oil or carbon solvent to facilitateremoval. Be careful not to permit thevalve or body to come in contact withany hard surface.

Examine the nozzle body and removeany carbon deposits from exterior sur-faces using a brass wire brush. Thenozzle body must be in good conditionand not blued due to overheating. Allpolished surfaces should be relativelybright, without scratches or dullpatches. Pressure surfaces (A, B andJ-Fig. 56) must be absolutely cleanand free from nicks, scratches or for-eign material , as these surfaces mustregister together to form a high pres-sure joint.

Clean out the small fuel feed chan-nels (C), using a small diameter wire.Insert a suitable groove scraper intonozzle body until nose of scraperlocates in fuel gallery (F); then, pressnose of scraper hard against side ofcavity and rotate scraper to clean allcarbon deposits from the gallery. Cleanall carbon from valve seat (G), using asuitable seat scraper.

Use a pintle hole cleaning probe ofappropriate size and pass the probe

15. Precombustionchamber holder

16. Washer

Fig. 5jectorbustiprecoand

down the bore of the nozzle body untilprobe protrudes through the orifice;then, rotate the probe until all carbonis cleared.

Examine the pintle and seat end ofthe nozzle valve and remove any car-bon deposits using a brass wire brush.Use care, however, as any burr orsmall scratch may cause valve leakageor spray pattern distortion. If valveseat (M-Fig. 56) has a dull circumfer-ential ring indicating wear or pitting orif valve is blued, the valve and bodyshould be turned over to an officialdiesel service station for possible over-haul.

Before reassembling, thoroughly rinseall parts in clean diesel fuel and makecertain that all carbon is removed fromthe nozzle holder nut. Install nozzlebody and holder -nut, making certainthat the valve stem is located in thehole of the holder body. Tighten theholder nut to a torque of 50 ft. lbs.

NOTE : Over-tightening may causedistortion and subsequent seizure ofthe nozzle valve.

Test the injector as in paragraphs 94.95, 96, 97 and 98. If the nozzle does notleak and if the spray pattern is satis-factory, the nozzle is ready for use. Ifthe nozzle will not pass the leakage andspray pattern tests, renew the nozzlevalve and seat, which are available onlyin a matched set; or, send the nozzleand holder assembly to an official diesel

NOZZLE SOOT

KI

M

N

INOZZLE HOLDER

PRESSURE FACE

PFig. 56- Views of nozzle and holder showing

5- View showing in-assembly , precom-

on chamber holder,

various points for detailed cleaning andInspection.

mbustion chamber A. Nozzle body pressure

glow plug removed face H . Pintle orifice

from engine.B. Nozzle body pressure

faceJ. Holder pressure faceK . Valve cone

C. Fuel feed hole L. StemD. Shoulder M. Valve seat

18. Glow plug E. Nozzle trunk N. Pintle19. Precombustion F. Fuel gallery P. Nozzle retaining

chamber G. Valve seat shoulder

32



service station for a complete overhaulwhich includes reseating the nozzlevalve cone and seat.

101. OVERHAUL OF NOZZLEHOLDER. On Series B-275, B-414, 424,444, 2424 and 2444, refer to Fig. 52 andremove cap (3). Remove jam nut (5)and adjusting screw (6). Withdrawspring (7) and spindle (8). On Series354, 364 and 384 refer to Fig. 54 andremove cap (3). Remove spring cap (4)and shims (6). Withdraw spring (7) andspindle (8).

On all models, thoroughly wash allparts in clean diesel fuel and examinethe end of the spindle which contactsthe nozzle valve stem for any irregular-ities. If the contact surface is pitted orrough, renew the spindle. Renew anyother questionable parts.

Reassemble the nozzle holder andleave the adjusting screw locknut looseuntil after the nozzle opening pressurehas been adjusted as outlined in para-graph 95.

PRE-COMBUSTION CHAMBERS

All Models102. The necessity for cleaning the

pre-combustion chambers is usuallyindicated by excessive smoking orwhen fuel economy drops.

To remove the precombustion cham-bers, first remove injector nozzles asoutlined in paragraph 99. Remove glowplug wires and glow plugs. Precombus-tion chambers can now be removed.

NOTE: In cases where precombustionchambers are stuck extremely tight, Itmay be necessary to remove cylinderhead as outlined in paragraphs 39 and43.

When reinstalling precombustionchambers, use new gaskets and be sureglow plug bores are aligned. Misalignedbores could cause the glow plug tocontact the precombustion chamber andresult in a short circuit.

INJECTION PUMP

All ModelsThe subsequent paragraphs will out-

line ONLY the Injection pump servicework which can be accomplished with-out the use of special , costly pumptesting equipment . If additional servicework is required , the pump should beturned over to an offical Diesel servicestation for overhaul . Inexperienced ser-vice personnel should never attempt tooverhaul a Diesel Injection pump.

adjust the injection pump timing onmodels equipped with pump havingpneumatic governor, proceed as fol-lows: Disconnect the number one ornumber four injector line from pump,remove the delivery valve holder, with-draw its valve and spring , then rein-stall the delivery valve holder. Attacha gooseneck or bent tube to thedelivery valve holder . Remove thepump side cover , place speed controllever in maximum speed position andcheck to be sure rack is in deliveryposition . Turn engine in direction ofnormal rotation , until pump plungerstarts to lift, then operate primer pumpto maintain fuel pressure in fuelgallery. Continue to turn engine insame direction until fuel flow from spillline decreases . Stop engine rotation atthis instant.

NOTE: Spill cut-off point is whenfuel flow decreases to two to four dropsof fuel per second at full fuel gallerypressure.

Measure the distance around the cir-cumference of the crankshaft pulleyfrom marker in pulley to timingpointer. This distance should be 1-1/8inches which equals 20 degrees BTDC.

NOTE: While 20 degrees BTDC isconsidered optimum , timing can beretarded as far as 16 degrees BTDC Incases where engine noise is critical andpower requirements are not exacting.However , timing should not be ad-vanced more than 22 degrees BTDC ormaximum power will be reduced andglow plug failure will be Increased. Ifnecessary , the timing angle can befound as follows : (A) Multiply the dis-tance measured on crankshaft pulley by360. (B ) Multiply pulley diameter by3.14. (C) Divide ( B) into (A).

Fig. 57-Injection pump drive gear used onearly B-275 tractors equipped with injection

pump having pneumatic governor.103. TIMING TO ENGINE, (PNEU-

MATIC GOVERNOR). To check and1. Cep s2. Hub groove

3. Pump gear4. Timing pointer

Paragraphs 101-105

To change the injection pump timing,first remove the injection pump drivegear cover from timing gear cover.Refer to Fig. 57 and loosen the threecap screws (1). Turn indicator r1) clunkwise to advance timing, ii counterclockwise to retard. One division on theinjection pump drive gear equals fourdegrees on the engine crankshaft.

Reassemble by reversing disassem-bly procedure and torque the deliveryvalve holder to 30 ft.-lbs. Bleed the fuelsystem as in paragraph 91.

104. TIMING TO ENGINE (ME-CHANICAL GOVERNOR). The injec-tion pump drive shaft and the drivegear adapter are equipped with a mas-ter spline. As long as the pump drivegear is in proper relation to the enginetiming gear train as shown in Fig. 35,the pump may be installed at any timewithout regard to crankshaft or timingmark location. When a new injectionpump, pump drive gear or drive gearadapter is installed, or when incorrectpump timing is suspected, the pumptiming can be checked as follows: Shutoff fuel and remove injection pump tim-ing window and clutch housing dustcover. Turn engine in direction ofnormal rotation until No. 1 piston iscoming up on compression stroke andcontinue turning engine until the "TDC"

mark on flywheel aligns with the scribemark located on left front flange ofclutch housing. Check the timing marks

on engine front end plate and pumpmounting flange as shown at (T) in Fig.49. If alignment is required, loosen nutson pump mounting studs, align themark on pump mounting flange rnidw av

between the two marks on the enginefront end plate and retighten nuts. ALthis time the "E" scribed line oninjection pump rotor should align withthe scribed lines at the lower hole ofthe pump snap ring.These marks arevisible after removing cover 1W;

NOTE: Movement of the pump be-tween the two scribed lines on theengine front end plate gives a variationof approximately three degrees.

105. REMOVE AND REINSTALL(PNEUMATIC GOVERNOR). Beforeremoving injection pump, thoroughlywash pump and all connections withclean diesel fuel. Shut off fuel and dis-connect the fuel supply line at theprimary pump. Disconnect the fuelpump to fuel filter line at fuel pump.Disconnect fuel filter to injection pumpline at injection pump. Disconnect antiremove injector lines.

NOTE: Use plastic caps and plugs toseal all openings of lines and pump toprevent entry of foreign material.

S


Paragraphs 106-111

Remove the two lines between injec-tion pump governor and intake venturi.Disconnect stop control rod at injectionpump. Remove the injection pumpdrive gear from the timing gear cover,then remove the cap screws whichretain timing pointer and drive gear toinjection pump hub. Rotate injectionpump gear until holes in same alignwith mounting cap screws and removecap screws. Remove cap screws frominjection pump mounting flange, thenremove the injection pump.

Reinstall by reversing the removalprocedure and bleed fuel system as inparagraph 91.

106. REMOVE AND REINSTALL(MECHANICAL GOVERNOR). Beforeremoving injection pump, thoroughlywash pump and all connections withclean diesel fuel. Remove the breatherline between injection pump drive gearcover and inlet manifold, then removethe injection pump drive gear coverfrom timing gear cover. Disconnectcontrol rod and fuel shut-off rod frompump. Shut off fuel and disconnectinjection pump supply line at injectionpump. Disconnect excess fuel line frominjection pump and pressure lines frominjectors.

NOTE: Use plastic caps and plugs toseal all openings of lines and pump toprevent entry of foreign material.

Unbolt injector pump drive gearfrom pump huh, then unbolt andremove injection pump with pressurelines attached. Pressure lines can nowbe removed, if necessary.

4Fig. 58-Schematic view showing governorassembly, venturi and the connecting pipes

used on early 8 . 275 tractors.

II lint h idl.' ndinsl,ng

I, I.o" Idle adNSting.9. Diaphragm4. Housing7 Idle valve

v- 4enturi.

8. Pivot line2. Vacuum line li. Loeknut


NOTE: On Series 8-414, 354, 364 and384, injection pump removal will beeased if fuel filter is removed from inletmanifold.

Reinstall by reversing the removalprocedure and bleed fuel system as inparagraph 91. Check timing marks asoutlined in paragraph 104.

107. GOVERNOR (PNEUMATIC).The pneumatic governor is actuated byvacuum in the venturi of the engine airinduction system.

108. ADJUSTMENT. Recommendedgoverned speeds are as follows:

Pneumatic GovernorEngine high idle rpm .... 2075Engine rated rpm ...............1875Engine low idle rpm ............570Belt pulley high idle rpm ......... 1479Belt pulley rated rpm ......... .1336Belt pulley low idle rpm ...........407Pto high idle rpm ................. 614Pto rated rpm ....................555Pto low idle rpm ................. 169

To adjust the governor, first makesure the air cleaner is properly ser-viced and that no leaks are present inthe venturi, governor housing or piping.Check travel of venturi cross shaft andbe sure it contacts the limit stops atthe extremes of hand lever positions.Adjust link rod length if necessary, toobtain correct travel.

Loosen the idling valve locknut (11-Fig. 58), remove pitot line connectionsand screw idle valve (7) out until thestem is completely clear of the dia-phragm. Tighten locknut. Start engineand run same at high idle for approxi-mately 15 minutes and when both thetemperature and rpm have stabilized,check the idle valve for leakage byplacing finger over end of valve. If theengine rpm decreases, the valve isleaking and same should be removed,cleaned and inspected to determine thecause.

With idle valve installed and theengine temperature and high idle rpmstabilized, check the engine high idlewhich should be 2075 rpm. If high idlerpm is not as specified, turn adjustingscrew (H-Fig. 59) as required. Tightenlocknut and recheck.

109. IDLE (DAMPER) VALVE. Al-though this valve can be adjusted atlow idle, the following procedure willpreclude the possibility of over adjust-ment which can cause poor governoraction.

With pitot line removed , start engineand run same at high idle until bothengine temperature and rpm havestabilized . Now with engine running at

high idle, slowly turn idle valve inwarduntil engine rpm decreases 20 to 30rpm. Tighten locknut and connect pitotline.

110. To check the engine low idlerpm, place the hand lever in low idleposition and check to see that the ven-turi cross shaft lever is against thestop. Check the engine low idle speedwhich should be 570 rpm. If engine rpmis not as specified, turn screw (L-Fig.59) as required. Tighten locknut andrecheck.

111. GOVERNOR DIAPHRAGM.The governor diaphragm is made fromspecially prepared leather and any pinholes or fractures in same will result infaulty governor action.

To test the diaphragm , proceed asfollows: With engine stopped, discon-nect both lines from the governor unit.Move the stop control lever to the stopposition , place a finger over each of thetwo holes from which the lines wereremoved, then release the stop lever.The control rod should remain sta-tionary and any movement of the con-trol rod indicates leakage either at dia-phragm, housing or housing coverjoints.

To renew the governor diaphragm,disconnect pitot line (8-Fig. 58) fromgovernor housing cover , then removegovernor housing cover and spring.Pull diaphragm rim from its recess andpull as far from governor housing aspossible. Push the control rod as farhack as it will go, then turn diaphragm90 degrees , slide toward top of housingand remove.When reassembling , tighten the gov-

ernor housing screws securely. Checkand adjust if necessary , the governedspeeds as outlined in paragraphs 108,109 and 110.

Fig. 59- Exploded view of the venturl andcomponent parts used on early B-275tractors fitted with injection pump having

pneumatic governor.

H. High speed adjustingS. Housing

L- Low speed adjusting 6. Throttle valvescrew 7. Bushing

2. Vacuum tube 6. Pilot tube4. Plug 9. Spindle

34



112. GOVERNOR (MECHANICAL).The mechanical governor is an integralpart of the injection pump and if ser-vice is required , the pump should beturned over to an official diesel servicestation.

113. ADJUSTMENT. Recommendedgoverned speeds are as follows:

Series B-275Engine high idle rpm ... 2000Engine rated rpm ............1900Engine low idle rpm.......... 530-580Pto high idle rpm .............. 595Pto rated rpm ................... 563Pto low idle rpm .............. 158-176

Series B-414 -424444-2424-2444Engine high idle rpm ............ 2200Engine rated rpm ............ .2000Engine low idle rpm,

B-414-424-2424 .................550444-2444 .......................650

Pto high idle rpm .................600Pto rated rpm .................... 545Pto low idle rpm,

B-414-424-2424 ..................150444-2444 ......................177

Series 354Engine high idle rpm ...........2075Engine rated rpm .............1900Engine low idle rpm .... 550Pto high idle rpm ...............615Pto rated rpm ................... 556Pto low idle rpm .................163

Series 364-384Engine high idle rpm ........2310Engine rated rpm ........... .2100Engine low idle rpm .............550Pto high idle rpm .................634Pto rated rpm. ................... 573Pto low idle rpm ................. 150

To adjust the governor, first startengine and bring to normal operatingtemperature. Move the speed controlhand lever to the high idle position at

which time the engine high idle shouldbe 2000 rpm for Series B-275, 2200 rpmfor Series 424, 444, 2424, 2444 andB-414 , 2075 rpm for Series 354 and2310 for 364 and 384 . If engine rpm isnot as specified , loosen locknut andturn the high idle adjusting screw(11- Fig. 60) as required. Tighlonlocknut and recheck.

With engine high idle rpm properlyadjusted , move the speed control handlever to the low idle position at whichtime the engine low idle should be 530580 rpm on Series B-275, 550 rpm onSeries B-414 , 354, 364, 384, 424 and2424 or 650 rpm on Series 444 and2444. If engine rpm is not as specified,loosen locknut and turn low idle adjust-ing screw (L-Fig. 60) as required.Tighten locknut and recheck.

VENTURI

Series B-275

114. R&R AND OVERHAUL. Toremove the venturi, raise hood andloosen clamp which retains air cleanerhose to venturi. Remove air cleanercup, then unbolt air cleaner clamp andremove air cleaner. Disconnect controlrod from venturi cross-shaft, thenunbolt and remove venturi from inletmanifold.

Further disassembly and/or overhaulis obvious after an examination of theunit and reference to Fig. 59.

FUEL PUMP

Series B -275-B -414-354-364-384115. When tractor is fitted with an

injection pump having a pneumaticgovernor a fuel pump such as thatshown in Figs. 61 and 62 is used. Ontractors which are fitted with the injec-tion pump having a mechanical gover-

Fig. 60-On late 8-275and all 8-414, 354, 364,384, 424, 444, 2424 and2444 tractors having injec-tion pump fitted with me-chanical governor the high(H) and low (L) Idle speedadjusting screws are lo-

cated as shown.

Paragraphs 112-119

nor a pump such as that shown in Figs.63 and 64 is used.

116. TESTING . The fuel pump usedin conjunction with the pneumaticgoverned injection pump can bc- test t-dby mounting injection pump l,n,l luripump )It test statr.t nod pi ,, 1follows:

117. SUCTION TEST. With iniectioiipump running at 700 rpru, fuel. pumpshould deliver fuel in 60 ne,undL

through dry hoses from a 2-foot suctiur,

head.

118. DELIVERY TEST. At 700 injec-tion pump rpm, fuel pump shoulddeliver a minimum of 300 cubic centi-meters of fuel in 30 seconds from a 2-ft.suction head.

119. MAXIMUM PRESSURE TEST.With injection pump running at 700

Fig. 61-When tractor is fitted with an injec-tion pump having a pneumatic governor, thefuel pump is bolted to the side of the injec-

tion pump as shown.

5, Housing8. Plug

18. Valve guideHP. Hand primer

11 ^1

^ k,^

g--2O2012 : 1U

18 9

13 14 15 101 3 l«^itrc,- S

Fig. 62- Exploded view of fuel pump shownIn Fig. 61 . Hand primer lever Is not shown.

1. Outlet stud II. Retaining pin3- Washers 12- Tappet roller4. Nipple 13. Roller pin5. Housing 14 . Tappet guide6. Plunger 15. Tappet spindle7. S ring 18. Valve guide8. Prug 19, springs9. Washers 20. Valves10. Threaded connection 21. Inlet stud

35


Paragraphs 120-122 INTERNATIONAL HARVESTERr_

rpm. fuel pump should maintain anoutlet, pressure of 5-7 psi.

120. VALVES TEST. With maximumpump pressure built up and pumpstopped, the maximum pressure shouldnot decrease by more than 0.5 psi in 20<ocondS,

121. R&R AND OVERHAUL. Toremove and overhaul the fuel pumpused on models with pneumatic gov-erned injection pump, proceed as fol-lows:

Shut off fuel and disconnect fuel inletand outlet lines from pump body. Referto Fig. 62 and remove hand primer and

I

22

3

--4

a

19Fig. 63- Exploded view of fuel pump usedon late Series B-275 and all Series B-474,354, 364 and 384 tractors . Diesel and non.

diesel pumps are similar.

3. Cover 13 . Washer (fabric)4. Gasket 14 . Rocker arm5. Filter screen 15. Spring

Valve body 17 linkle- I'll retainers

_ retamrr 19- Rocker arm ton Ilisphnagm as ,

,

20. nods & hand primerI. Sprang 21. Spr i ngtI. tC anhcr imeta1l ee22.

Valalv casket

36

valve guide (18). Lift out springs (19)and valves (20). Remove plug (8) andspring (7). The pump housing can nowbe removed from injection pump.

NOTE : Above disassembly should bedone prior to removing pump housingfrom injection pump as pump housingcan be easily damaged if clamped in avise.

Fig. 64- View of 8 -275 tractor showing theauxiliary fuel pump (AP) used when tractor Isequipped with an injection pump having amechanical governor . B-414 , 354, 364 and

384 tractors are similar.

Fig. 65- Exploded view ofthe Zenith downdraft car-buretor used on early Ser-ies 8-414 and 354 non-

diesel tractors.

I Gasket3. Boa t4. Main jet5. Gasket6. Bleed jet7. Float8- Float arm & pivot9. Compensating jet

10. Emulsion blockI1. Idle jet12. Plug14. Throttle plate15. Gasket16. Float needle17. Washer18. Barrel assembly20. Choke tube21. Choke plate22. Idle mixture adjusting

screw23. Spring24. Spring27. Choke shaft & lever36. Interconnection rod37. Choke control lever39. Spring41. Tah washer42. Choke tube reteining

43 Throttle shaft49- Stop screw50. Spring

With pump housing removed, invertsame and shake out plunger (6) andtappet spindle ( 15). If necessary, thetappet roller ( 12) and tappet guide (14)can be disassembled by driving out pin(11).

Clean all parts and inspect valvesand their seats in the pump housing.All seating surfaces should be cleanand smooth . Renew any pitted, worn ordamaged valves . Inspect all springs andrenew those which are rusted, dis-torted or show signs of being fractured.Inspect tappet assembly and pay parti-cular attention to the roller and its pin.If wear is excessive , renew both parts.Inspect plunger ( 6) for scoring, pitting,wear or hammering from spindle (15)and if excessive wear or damage isfound, it is recommended that bothplunger (6) and housing ( 5) be renewed.Inspect the condition of the tappetspindle ( 15) gland washer , which islocated in the pump housing, andrenew same if necessary.

Reassemble by reversing the disas-sembly procedure and if necessary, testpump as outlined in paragraphs 117through 120.

122. The fuel pump used when trac-tor is equipped with an injection pumphaving a mechanical governor is con-ventional and the removal and /or over-haul is obvious after an examination ofthe unit and reference to Figs. 63 and64.

M

M

a

a

Ow

Max

M

M

na

a



FUEL SYSTEM(NON-DIESEL)

CARBURETOR

Series B-414-354123. The early production B-414 non-

diesel tractors ( prior to engine serialNo. BC-144/3525) and all 354 non -dieseltractors were equipped with an Englishbuilt, Model VNN, Zenith downdraftcarburetor. On later production B414tractors, the carburetor used is theModel VNP Zenith downdraft which isequipped with an accelerator pump.

124. R&R AND OVERHAUL. Re-moval of the carburetor is obvious uponexamination of the unit.

With carburetor removed, separatethe bowl cover and barrel from bowl,then remove float and emulsion blockfrom bowl. Jets can now be removedfrom emulsion block and the fuel inletneedle valve assembly removed frombowl cover. Remove choke plate andshaft, then remove set screw and pullchoke tube from barrel.

On Model VNP carburetor, removepiston retaining screw and withdrawaccelerator piston and spring. Then,unscrew and remove the acceleratorpump check valve.

Any further disassembly required oneither model will be obvious uponexamination of the unit and referenceto Fig. 65 or 66.

Reassemble by reversing the disas-sembly procedure. Float level is non-adjustable.

Paragraphs 123-126

Series 424-444 -2424-2444125. The carburetor used on Series

424, 444, 2424 and 2444 tractors is theMarvel-Schebler Model TSX 896. The1-1/8-in . updraft carburetor is equippedwith a fuel solenoid shut-off valvewhich prevents engine from "dieseling"when ignition is switched to off posi-tion.

126. R&R AND OVERHAUL. Re-moval of the carburetor is obvious uponexamination of the unit.

Fig. 67- Exploded view of the Marvel

Schebler Model TSX896 carburetor used on

Series 424 , 444, 2424 and 2444 tractors.

Fig. 66-Exploded view of Model VNP Zenith downdralt carburetor used on late Model B-414

tractors.

1. Choke plateS ring

4- Choke shaft6. Retainer7. Felt washerS. Carburetor barrel9. Gasket

12. Inlet needle & seat13. Washer14 Gasket15. Idle mixture needle

Spring 38. Float W. Throttle shaltPomp lever 39. Float arnt 52. RodBracket 40. 'T'hrottle plate 53 leverSpring 41. Flog 54 Pump linkChoke link 42- Idle jetChoke lever 43. Emulsion blockPump piston 44. Compensating jetPump spring 45. Pump jetCheck valve 47. Main jetCarburetor howl 48. GasketDischarge valve 49 . Ventilating screw

I. Gasket3- Throt tie p Tate5. Throttle body7. Idle mixture needle9. 'throttle shalt cup10. Fuel inlet semen11. Idle jet

basketIll. Fuel islet va.v,

56 , '1'hroule stop 14. Gasket57. Throttle lever 15. Float60 . Throttle stop screw 16. Venturi61. Spring 17. Mann nozzle64. Casket 18. Gasket65. Blanking plate 19. Power jet68. Choke tube 20. Choke plate

21 Fnel bowl25. Spring27 Choke st.uft29. I'acklnp31. Irrur. piup32. Plug111. V,n34 Choke aaP, t'rl.35. plod66 'T'hr.ail37. Packing38. Retainer39. 't'hrottle shaft41. Throttle stop screw42. Float spring43. Spring bracket

37


Paragraphs 127-132

With carburetor removed, first re-move the fuel solenoid shut -off assem-bly, then unbolt and separate the throt-tle body from fuel bowl. Remove floatand fuel inlet needle valve assemblyfrom the throttle body. Jets can nowhe removed from throttle body and fuelbowl. Any further disassembly re-quired will be obvious upon examina-tion of the unit and reference to Figs.67 and 68.

Reassemble by reversing the disas-semhlv procedure. Float setting andparts data are as follows:

Float setting 14-in.Repair kit ................... 286-1965Gasket set 16613Inlet needle and seat ..........233-608Idle jetNozzle .............. 47-277Power jet ................ 49-188

The power adjusting needle on fuelsolenoid shut -off valve should be ad-justed to four turns off its seat forcorrect adjustment . The initial settingfor the idle mixture needle is one fullturn open . Adjust the throttle stopscrew to obtain the correct engine lowidle speed of 425 rpm.

FUEL PUMP

Series B-414-354127. The fuel pump used on Series

B-414 and 354 non-diesel tractors is aconventional diaphragm type. Removal,installation and overhaul of the pumpwill he obvious upon examination andreference to Fig. 63.

Series 424-444-2424-2444128. An "Autopulse" electric fuel

pump (IH part No. 391586R91) wasused on early production Series 424and 2424 non - diesel tractors. Lateproduction Series 424 and 2424 and allSeries 444 and 2444 non-diesel tractorsare equipped with a "Bendix" electricfuel pump (IH part No. 394327R91).Removal of either pump is obviousupon examination of the unit.


Reinstall by reversing the removalprocedure.

Series 424 -444-2424-2444130. To remove radiator, drain cool-

ing system and remove hood and sidepanels. Disconnect radiator hoses andunbolt the radiator brace. Unbolt thefan shroud and lay same back over fan.Remove nuts from lower support boltsand lift radiator from tractor.

Radiator is of one-piece constructionwith non-detachable upper and lowertanks.

Reinstall by reversing the removalprocedure.

Fig. 68- View showing ad-justing screws on Marvel-Schebler Model TSX896carburetor . Main fuel ad-justing screw is on fuel

solenoid shut -off valve.

COOLING SYSTEM

RADIATOR

Series B -275-B -414-354 -364-384129. To remove radiator, drain cool-

ing system and on Series B-275 andB-414, lift hood, remove cotter pinsfrom ends of stayrod channels andmove hood to a vertical position. Dis-connect radiator brace and on SeriesB-275, the fuel filter brace fromradiator. On Series 354, 364 and 384remove hood and grille support, thenremove air cleaner hose from aircleaner and disconnect the horn wire.On all series, disconnect upper andlower hoses from radiator, then unboltradiator from front support and liftfrom tractor. Fan shroud can now beremoved, if necessary.

Radiator is of one-piece constructionwith non-detachable upper and lowertanks.

Fig. 69 - Exploded viewshowing component partsof the water pump assem-bly end thermostat hous-ing used on Series 354,364, 384 and late 8.414.Items 16 , 17, 18 and 19are used on Series B-275

and early 8-414.

1. Fan2. Pulley flange3. Pulley hub4. Shaft & brg. ass..5. Set screw6. Housing7G7Gasket8. Flinger9. Seal

It. Impeller11. Cover thermostat

housing12. Gasket13. Thermostat14. Gasket15. Thermostat housing16. Retaining ring17. Thermostat18. Gasket19. Thermostat housing

THERMOSTAT

All Models131. Thermostat is located in the

water outlet elbow and the removalprocedure is evident. Standard thermo-stat for all B-275 and early productionB-414 tractors begins to open at 176degrees F and is fully open at 190degrees F. On late production B-414tractors starting with engine serialnumbers BC-144/6029 and BD-154%32795and all 354, 364, 384, 424, 444, 2424 and2444 tractors, standard thermostatbegins to open at 170 degrees F and isfully open at 199 degrees F.

WATER PUMP

Series 8-275-B -414-354-364-384

132. R&R AND OVERHAUL. Toremove the water pump, first removethe radiator as outlined in paragraph129, then loosen the water pump pulleyflange, or bracket on those models withbelt adjusting attachment, and remove

111L \\

0

-10

5

38



fan belt. Loosen alternator or genera-tor adjustment strap and removealternator or generator belt. Unboltand remove water pump.

To disassemble water pump, refer toFig. 69 and remove fan blades (1) andpulley flange (2). Pulley hub (3) cannow be pressed from pump shaft (4).With pump hub removed, remove setscrew (5), then press shaft, bearing,seal and impeller rearward out of hous-ing. Shaft can now be pressed fromimpeller.

Inspect all parts for excessive rust orscale and for undue wear or damage.Both impeller and pulley hub must fitpump shaft with no less than 0.001interference fit. Pump shaft bearing fitin housing is from 0.0003 loose to0.0008 tight. Renew any parts which donot meet the above conditions.

Reassemble pump by reversing thedisassembly procedure. Longest sectionof pump shaft is toward impeller end ofhousing. Install new seal (9). Pressimpeller and pulley hub on pump shaftuntil they are flush with ends of shaftand when pressing on pulley hub besure that impeller end of shaft is sup-ported. Do not subject pump housing tothe pressing pressure.

After assembly, turn pump by handto see that it rotates freely. As afurther check for correct assembly,measure the distance between fanmounting surface of pulley hub andmounting face of pump housing. Thisdistance should be 5-17/32 inches.

Use new gasket and reinstall pumpby reversing removal procedure.

NOTE : In some cases , where over-heating has become a problem, a beltpulley attachment such as that shownin Fig. 70 is available for Series B-275.The attachment consists of an addi.tional pulley mounted on the injectionpump gear cover which provides adjust-ment and a fixed diameter water pumppulley . In order to accommodate theattachment , a new Injection pump gearcover is required and the crankcasebreather pipe has been shortened andrelocated.

Series 424-444-2424-2444 Diesel

133. R&R AND OVERHAUL. Toremove the water pump, first draincooling system, then remove hood andside panels. Loosen fan belt adjusterand generator or alternator belt ad-juster and remove belts, Unbolt fanand lay same forward in shroud.Remove hoses then unbolt and lift outwater pump.

To disassemble water pump, use asuitable puller and remove pulley(6-Fig. 71) from shaft (7). Remove set

Fig. 70- View showingcomponent parts whichmake up the fan belladjusting pulley attach-

ment for Series B-275.

2. Retainer3. Bearings4. Pulley hub5. Bracket6. Adjusting pulley7. Injection pump gear

cover

Fig. 71-Exploded view ofthe water pump used onSeries 424 , 444, 2424 and

2444 diesel tractors.

1 Fan blade2. Fan belt3. Set screw4. Gasket5. Spacer6. Pulley7. Shaft & bearing assy.8. Pump body9. "0" ring

l0. Seal11. Impeller12. By-pass tube13. By-pass hose15. Thermostat housing16. Gasket17. Water outlet18. Gasket19. Thermostat20. Snap ring21. Belt adjuster pulley22. Bearing23. Bracket

Fig. 72- Exploded view ofthe water pump used onSeries 424, 444, 2424 and

2444 non -diesel tractors.

1. Retainer2. Thermostat3. Water outlet elbow4. Gasket5. Nipple6. By pass hose7. Clamp8. Nipple9. Gasket10. Plate11. Gasket13. Impeller14. Seal15. Pump body16. Slinger17. Shaft & bearing easy.18. Snap ring19. Hub20. Pulley

I

Paragraph 133

15,\

I2 4

\Io

3

0 1

2

It


Paragraphs 134-135

screw f.41. then press shaft., hearing,seal and impeller rearward out of pumpbody. Shaft can now be pressed fromimpeller.

The shaft and bearing (7) are avail-able only as a pre-assembled unit.When renewing seal (10), press only onouter diameter. Both impeller andpulley huh must fit pump shaft withnot less than 0.001 interference fit.Pump shaft bearing fit in housing isfrom 0.0003 loose to 0.0008 tight. Afterthe seal and bearing and shaft unit areinstalled and set screw tightened, pressimpeller and pulley hub on pump shaft.impeller must be pressed on flush withend of shaft. When pressing on pulleyhuh, be sure impeller end of shaft issupported. Do not subject. pump hous-ing to the pressing pressure.

Use new gasket and reinstall pumpby reversing removal procedure.


134. R&R AND OVERHAUL. Toremove water pump, first drain cool-ing system, then remove hood skirtsand side panels. Unbolt and remove thegenerator or alternator. Disconnect thelower hose and by- pass hose. Unboltfan blades and pulley from water pumpand let fan blades rest in shroud. Un-bolt water pump from engine and with-draw pump from left side of tractor.

To disassemble pump, use a suitablepuller and remove hub (19-Fig. 72)from shaft (17). Remove plate (10) andsnap ring (18), then support pump bodyand press shaft and bearing assembly(17) from impeller (13) and pump body.Remove seal (14).

The shaft and bearing are availableonly as a pre assembled and pre-lubri-cated unit. Water pump overhaulpackage (IH part No. 391028R92) isavailable from International HarvesterCo. When renewing seal (14 ), pressonly on outer diameter.

Reassembly is evident , keeping inmind that vanes of impeller ( 13) andflange of hub (19) are toward front oftractor. Press impeller and hub onshaft until bottom of chamfer at eachend shows . Clearance from face of bodyto face of impeller hub should be 0.031.

ELECTRICALSYSTEM

Series B -275-B -414-354-364-384135. Lucas generators, alternators,

regulators and starting motors areused and the specifications are asfollows:


Generator (B-275-B414,354-364)Model .......................C39-P2Brush spring tension (oz.) ........22-25Field resistance (ohms) ............6.1Output

Hot or cold ................... ColdAmperes ...................... 11.0Volts .........................13.5Rpm. . . , ..... ... ....... 1450-1700

Alternator (364-384)Make ........................LucasModel ............... ......... 15ACROutput

Rpm .........................3000Amperes . _ ................28

Regulator (B-275-B414-354-364)Model ................ RB108Cut-out relay

Air gap .......... ...... 0.025-0.040Point gap ..... ..... .0.010-0.020Closing voltage range ...... 12.7-13.3

Voltage regulator,Air gap ..................See noteSetting (volts) range

at 68°F ...... ........... 16.0-16.5

Fig. 73-Field windingcontinuity and resistance

test. Refer to text.

Ground polarity ............ Positive

NOTE : 0.015 for those with disc orwire winding core ; 0.021 for those withsquare winding core.

Starting Motor ( Series B-275 -B414-354-364384 Diesel)Model .................... ..... M45GVolts ...........................12.0Brush spring tension ............3040

No Load TestVolts ........................12.0Amperes . .....................70.0Rpm .........................8000

Lock TestVolts .......................5.2Amperes ...................930Torque (Ft.-Lbs.) ........... _ ...29

Starting Motor ( Series B414-354Non-Diesel)Model ...................... M418GVolts .........................12.0Brush spring tension (oz.) ........30-40

No Load TestVolts .........................12.0

Fig. 74- Field winding in-sulation check . Refer to

text.

Fig. 75-Stator windingcontinuity test . Refer to

text.

40



Amperes ...................... 45.0Rpm ..................... 7400-8500

Lock TestVolts .............. ....... 7.0-7.4Amperes ................. 440-460Torque (Ft.-Lbs.) ................17

Fig. 76-Stator windingInsulation check . Refer to

text.

Fig. 77-Testing rectifierdiodes . Refer to text.

Paragraphs 135A-135B

disassembly procedures.Remove slip ring end cover. Note

position of stator winding connectionsand unsolder connections from rectifier.Remove brush and regulator assembly.Renew brushes if overall length is lessthan 5/16-inches.

Check field winding continuity andresistance simultaneously by cunuec.ing a battery operated ohmmeter asshown in Fig . 73. The ohmmeter sh,,ui,iread 4.3 ohms for 15 ACR rutor withpink winding or 3.3 ohms for 15 ACErotor with purple winding.

To check field winding insulation,connect a 110 AC-15 watt test lamp asshown in Fig . 74. The lamp should notlight.

Inner stator winding short -circuitingcan be indicated by signs of burning ofthe insulation varnish covering . If thisis obvious renew stator assembly. Tocheck the continuity of the statorwindings , connect any two of the threestator winding leads in series with a12V battery and 36 watt test lamp(Fig. 75). Lamp should light. Transfertest lamp lead to third stator lead (Fig.75). Lamp should light.

Check insulation of stator windingsby connecting 110 AC-15 watt testlamp between lamination and any one

of the three stator leads IFig. 76). Tnelamp should not light.

To test the rectifier diodes connect a12V battery and 1 .5 watt bulb in seriesas shown in Fig. 77. Lamp should lightduring one-half of test only. If onediode is unsatisfactory renew rectifierassembly.

135B . ALTERNATOR OVERHAUL.Refer to Fig. 78. Scribe a mark across

i. Moulded cover2, Brush box assembly3. Regulator4. Brush & spring easy.5 Regulator grounding

screw & brush boxscrew

6. Rectifier7. Slip ring end bracket8. Stator winding easy.9. Slid ring moulding10. Bell bearing11. Rotor & field winding12. Woodruff key13. Bearing easy.14. Drive end bracket15. Fan & pulley REGULATOR

Wiring Color Code:

G - Green Y - Yellow

Fig. 78- Lucas alternate, used on late Series 364 and all Series 384.

135A. ALTERNATOR AND REGU-LATOR. Late Series 364 and all Series384 are equipped with Lucas alterna-tors. The following component testingmay be accomplished with minimumdisassembly. See paragraph 135B for

41


Paragraph 136

011,11;t 1m halves. Remove mountingbolts and separate alternator. Separatestator from slip ring end bracket androtor assembly from drive end bracket.Remove drive pulley, fan and shaftkey. Then press rotor shaft from fronthearing. Unsolder field winding courier-;inn. and remove slip ring. Then pressoff rear hearing. To reassemble, re-verse disassembly process. Use only"M" grade 45-55 resin-cored solder toattach stator wire to diode pins (Fig.79). Torque alternator mounting boltsto 55 in.-lbs.

Series B-414 Non- Diesel

136. DISTRIBUTOR AND IGNITIONTIMING. Lucas distributor is used andspecifications are as follows:

Model ............. ...... D3A4/[,TBreaker contact gap (in.)... -.....0.014Breaker arm spring

pressure (oz.) ............ 28-34Advance Data'

Start advance ............ 5 at 500Maximum advance ... ..19.5 at 1100

'Advance data is in distributor degreesand rpm. Double the listed values forflywheel degrees and rpm.

Static timing should occur at 5degrees BTDC. The rear flange of thecrankshaft pulley is marked with aTDC mark (notch) and may or may nothave an IGN. (5 degrees) mark (notch).If pulley does not have the IGN. mark,add such a mark 9/32-in. before theTDC mark.

NOTE : If advance timing Is to bechecked with a timing light, add anadditional mark (notch ) 2-7/32 inchesahead of the TDC mark at this time.This mark will indicate the 39 degreesBTDC advance timing specified for theengine.

To set static timing, proceed as fol-lows: Check to see that distributorbreaker points are in good conditionand set at 0.014, then turn engine untilnumber one piston is coming up oncompression stroke. Continue to turnengine until the 5 degree mark oncrankshaft pulley is aligned with timingpointer. Loosen distributor mounting,pull spark plug wire from number onespark plug and turn on ignition switch.Hold disconnected spark plug wireabout 1/8-in. from a clean point onengine, then rotate distributor bodyclockwise until a spark jumps betweenthe spark plug wire and engine.Tighten distributor mounting at thispoint.

NOTE: Always approach the numberone cylinder firing position by rotatingdistributor body in the direction oppo-


site to breaker cam rotation (clockwise).If necessary , turn distributor bodycounter-clockwise past timing point,then set timing by turning distributorbody clockwise.

Turn ignition switch off and reinstallthe number one spark plug wire.

If running timing is to be checked

Fig. 79- Soldering statorwire to diode pins. Uselong nose pliers as ther-mal shunt to avoid dam-

age to diodes.

NEAR-SIDEREAD LAMP

STARTER MOTOR

MANUALLY OPERATEDSTARTER SWITCH-

STARTER SOLENOIDSWITCH

FUSE AMMETER

LIGHT SWITCH

L.H. SIDE LIGHT

.H. TERMINAL BLOCK

•o oPOWER SOCKET

L.H. REM LIGHT

Fig

A

OS

1-1LICENSE PLATE LIGHT

: AROUND

R.N. SIDE LIMIT

ERMINAL rLOCR PLOW LIGHT

R.H. REM LIMIT

90-Wiring diagram of the International B-275 tractor . Some of the units above may notbe included.

with a timing light, proceed as follows:Be sure the advance timing mark(2-7/32 in. before TDC) has been addedto crankshaft pulley. Attach timinglight, start engine and direct timinglight at timing pointer. Timing pointershould be aligned with the advancetiming mark (39 degrees) when engineis operating at high idle (2200 rpm).

NO.IGLOW PL

ND.Y GLOW PLUG

N0.5 GLOW PLUG

NO.NGLOW PLU

tUOFF-SIMHEAD .AMP

h- GENERATOR

P HP MOUO

N. IlIN-BATTERIES rld

A VOLTAGEE REGULATORD

GLOW PLUG SLOW PLUS HOAN]INDICATOR SWITCH SUTTON

TR.N.

42



Series 354 Non-Diesel ®-'Z^t

137. DISTRIBUTOR AND IGNITIONTIMING. Model D204 Delco-Remy dis-tributor is used and specifications areas follows:

Breaker contact gap (in.) ......... 0.020Breaker arm spring

pressure (oz.) ................. 19-23Cam dwell angle ..............350-370Advance Data*

Start advance .............. I at 300Intermediate advance _ .7.5 at 600Maximum advance .....16.5 at 1100

`Advance data is in distributor degreesand rpm. Double the listed values forflywheel degrees and rpm.

To set static timing proceed as fol-lows: Check to see that distributorbreaker points are in good conditionand set at .020. Turn engine until thenotch in the crankshaft pulley is in linewith the pointer on the timing cover.Remove the distributor cap and checkthat the points are just opening (0.003maximum). If the points are not in thisposition loosen the mounting bolts andturn the distributor clockwise to openand counter-clockwise to close thepoints. Tighten the mounting bolts andinstall the distributor cap.

Slight advance or retard may be re-quired to obtain smoothest operation.Turning the distributor clockwise willadvance the timing and counter-clock-wise will retard the timing.

Series 424-444 -2424-2444138. Delco-Remy electrical units are

used and the specifications are as fol-lows:

Generators 1100409 and 1100422Brush spring tension (oz.) ..........28Field draw:

Volts ...........................12Amperes .................. 1.58-1.67

Cold output:Volts ........................... 14Amperes ......................25Rpm .......................3040

Regulator 1119270EGround polarity ...... ..... NegativeCutout relay:Air gap ...................0.020Point gap ....................0.020Closing voltage, range ..... 11.8-13.5Adjust to .................12.6

Voltage regulator:Air gap .....................0.060Voltage setting at degrees F.,

14.4-15.4 at 65°14.2-15.2 at 85°14.0-14.9 at 105°13.8-14.7 at 125°13.5-14.3 at 145°13.1-13.9 at 165°

U

45

47

r

244

42

1- 2$

3u trail .

ee,2h. Reguw;ur29. starter30. Starter solmwid31. Ammeter33. Glow plug switch35. Glow plugs43. Fuse holier44. Lighting switch

Fig. 82-Wiring diagram of Series B-414 diesel tractors . Ignition switch is not shown.

Paragraphs 137-138

24. Battery25. Generator26. Regulator27. Starter213. Starter solenoid29. Ignition & starter

switch30. Ignition warning light31. Oil pressure warning

light32. Ignition coil33. Oil pressure switch38. Fuse homer39. Lighting switch

Fig. 81 -Wiring diagram of Series B-414 non - diesel tractors.

43


Paragraph 139 INTERNATIONAL HARVESTERCurrent regulator:

Air gap ...................... 0.075Current setting at degrees F.,

25.0-30 at 65024.5-29 at 85°23.5-28 at 105-23.O 27 at 125-"1 5 -'5,5 at 1,15-20.1) 21.5 at 165°

Alternator 1100805Field current at 80° F,

Amperes .................... 2.2-2.6Volts .........................12.0

Cold output at specified voltage,Specified volts ................. 14.0Amperes at rpm. .........21 at 2000Amperes at rpm.... - - 30 at 5000

19.5-23.5 at 185°

Starting Motors 1107364 and 1108323Volts 12... ...............Brush spring tension (oz.) ..... 35No-load test:bolts ... ..._......_...9.0 Fig. 83- Wiring diagramAmperes (min.) .............. 50* of Series 354 non-diesel

Amperes (max.) ................ 60* tractors.

Rpm (min.) ..................6000 1. Battery

Rpm (max.) ...................8500 2. Solenoid3. Starter

Resistance test: 4. Distributor

Volts ... ... .. ....... 4.35. Coil6. Regulator

Amperes (min.) .................270 7. Generator8 Generato wa i li ht

Amperes (max.) .......... 310. r rn ng g

9. Headlamp warning light*Includes solenoid 10. Heat indicator.

11. Fuel gageLighterZStarting Motor 1107585 .

13. In line fuse

Volts ........................... 12 i 4. Ammeter

Brush spring tension (oz.) ..........355 In line fuse16. Key switch

No-load test: 17. Fuse holderI8. Connector

Volts ....--..9.0 19- Safety start switch

Amperes (min.). ... .. ......... 50* 20. Light switch21. Panel light

Amperes (max.) ...... 80* 22- Panel light

Rpm (min.) ...................5500 23. Tractnrmeter, light24. Fuel sender

Rpm (max.) ...................9000 25. Heat sender

Resistance test: 26. Flasher

Volts _....._........._......3.5Amperes min.) .... .............330Amperes ( max.) ........... .... 395

*Includes solenoid.

139. ALTERNATOR AND REGULA-TOR. Series 444 and 2444 are equippedwith a "DELCOTRON" generator (al-ternator) and a doublecontact voltageregulator.

CAUTION: Because certain compo-nents of the alternator can be damagedby procedures that will not affect a D.C.generator , the following precautionsMUST be observed:

a. When installing batteries or con-necting a booster battery, the negativepost of battery must be grounded.

b. Never short across any terminal ofthe alternator or regulator.

c. Do not attempt to polarize thealternator,

d. Disconnect all battery groundstraps before removing or installing anyelectrical unit,

e. Do not operate alternator on anopen circuit and be sure all leads areproperly connected before starting en-gine.

Specification data for alternator andregulator are as follows:

Fig. 84-Wiring diagramof Series 354 and 364 file.

set tractors.

1. Starter2. Battery3. Glow plugs4. Generator5. Regulator6. Headlamp warning lighti. Generator warning light8. Heat indicator9. Fuel gage10. LighterII. In line fuse12. AmmeterIs. In line fuseIC Rev switch15. Fuse holderl6. Connectori 7. Safety start switch8. Light switch19. Panel fight20. Panel light21. Tractormeter light22. Flasher23. Flow plug indicator24. Fuel sender25. Heat sender

Rated output hot,Amperes .................... 32.0

Regulator 1119516Ground polarity .... .... NegativeField relay,

Air gap ......................0.015Point opening. .0.030.........

17

4

p.

R

ne

44



Closing voltage range ........ 1.5-3.2Voltage regulator,

Air gap (lower pointsclosed) .................0.067 (1)

Upper point opening(lower points closed) ........0.014

Voltage setting at degrees F,13.9-15.0 at 65°13.8-14.8 at 85°13.7-14.6 at 105°13.5-14.4 at 125°13.4-14.2 at 145°13.2-14.0 at 165°13.1-13.9 at 185°

(1) When bench tested, set air gap at0.067 as a starting point, then adjustair gap to obtain specified differencebetween voltage settings of upper andlower contacts. Operation on lower con-tacts must be 0.05-0.4 volt lower thanon upper contacts. Voltage setting maybe increased up to 0.3 volt to correctchronic battery under-charging or de-creased up to 0.3 volt to correctbattery over-charging. Temperature(ambient) is measured '/4-inch awayfrom regulator cover and adjustmentshould be made only when regulator isat normal operating temperature.

140. ALTERNATOR TESTING ANDOVERHAUL. The only test which canbe made without removal and disas-sembly of alternator is output test.Output should be approximately 32amperes at 5000 alternator rpm.

To disassemble the alternator, firstplace match marks (M-Fig. 85) on thetwo frame halves (6 and 16), thenremove the four through-bolts. Pryframe apart with a screwdriver be-tween stator frame (11) and drive endframe (6). Stator assembly (11) mustremain with slip ring end frame (16)when unit is separated.

NOTE : When frames are separated,brushes will contact rotor shaft atbearing area . Brushes MUST be cleanedof lubricant If they are to be re-used.

Clamp the iron rotor (12) in a pro-tected vise only tight enough to permitloosening of pulley nut (1). Rotor andend frame can be separated afterpulley is removed. Check bearingsurfaces of rotor shaft for visible wearor scoring. Examine slip ring surfacesfor scoring or wear and windings foroverheating or other damage. Checkrotor for grounded, shorted or opencircuits using an ohmmeter as follows:

Refer to Fig. 86 and touch the ohm-meter probes to points (1-2 and 1-3); areading near zero will indicate aground. Touch ohmmeter probes to thetwo slip rings (2-3); reading should be4.6-5.5 ohms. A higher reading willindicate an open circuit and a lowerreading will indicate a short. If wind-ings are satisfactory, mount rotor in alathe and check runout at slip ringsusing a dial indicator. Runout shouldnot exceed 0.002. Slip ring surfaces canbe trued if runout is excessive or ifsurfaces are scored. Finish with 400grit or finer polishing cloth untilscratches or machine marks are re-moved.

Disconnect the three stator leads andseparate stator assembly (11-Fig. 85)from slip ring end frame assembly.Check stator windings for grounded oropen circuits as follows: Connect ohm-meter leads successively between eachpair of stator leads. A high readingwould indicate an open circuit.

NOTE: The three stator leads have acommon connection in the center of thewindings. Connect ohmmeter leads

Fig. 65-Exploded view of"DELCOTRON " alternatorused on Series 444 and

2444.

1. Pulley nut2. Washer3. Drive pulley4. Fan5. spacer6. Drive end frame7. Ball bearing8. Gasket9. Spacer10. Bearing retainer11. Stator assembly12. Rotor assembly13. Brush holder14. Capacitor15. Heat sinkI6. Slip ring end frame17. Felt seal & retainer18. Needle bearing19. Negative diode (3 used)20. Positive diode 13 used)

Paragraph 140

between each stator lead and statorframe. A very low reading wouldindicate a grounded circuit . A shortcircuit within the stator windings can-not be readily determined by testbecause of the low resistance of thewindings.

Three negative diodes (19) are locatedin the slip ring end frame (16) andthree positive diodes (20) in heat sink(15). Diode should test at or nearinfinity in one direction when testedwith an ohmmeter, and at or near zerowhen meter leads are reversed. Renewany diode with approximately equalmeter readings in both directions.Diodes must be removed arid installedusing an arbor press or vise and suitable tool which contacts only the outeredge of the diode. Do not attempt todrive a faulty diode out of end frauu- inheat sink as shock may cause datr.:oge-to the other good diodes. If all uit,dr -are being renewed, make certain thepositive diodes (marked with red printing) are installed in the heat sink andnegative diodes (marked with blackprinting) are installed in the end frame.

Brushes are available only in anassembly which includes brush holder(13). Brush springs are available forservice and should be renewed if heatdamage or corrosion is evident. Ifbrushes are reused, make sure allgrease is removed from surface ofbrushes before unit is reassembled.When reassembling, install brushsprings and brushes in holder, pushbrushes up against spring pressure and

1 2 3Fig. 86-Removed rotor assembly showingtest points when checking for grounds,

shorts and opens.

Fig. 87-Espioded view of moan nofde^assembly. Insert wire in hole (W) to hold

brushes up. Rater to text.

45


Paragraphs 141-142

insert a short piece of straight wirethrough hole ( W-Fig. 87 ) and throughend frame ( 16-Fig . 85) to outside.Withdraw the wire only after alterna.tor is assembled.

Capacitor ( 14) connects to the heatsink and is grounded to the end frame.Capacitor protects the diodes fromvoltage surges.

Remove and inspect ball bearing (7).If bearing is in satisfactory condition,fill bearing '/4-full with Delco-Remylubricant No. 1960373 and reinstall.Inspect needle bearing ( 18) in slip ringend frame. This bearing should berenewed if its lubricant supply isexhausted; no attempt should be madeto relubricate and reuse the hearing.

Fig. 98- View showing timing marks onSeries 424, 444, 2424 and 2444 non-diesel

engine.

....... o-FL


Press old bearing out towards insideand press new bearing in from outsideuntil bearing is flush with outside ofend frame. Saturate felt seal with SAE20 oil and install seal and retainerassembly.

Reassemble alternator by reversingthe disassembly procedure. Tightenpulley nut to a torque of 45 ft.-lbs.

NOTE : A battery powered test lightcan be used instead of ohmmeter for allelectrical checks except shorts in rotorwinding . However , when checking di-odes , test light must not be of morethan 12 volts.

141. DISTRIBUTOR. Identificationand tune-up data for the Series 424,444, 2424 and 2444 distributor is asfollows:

Make .. IIIIdentification symbol .............. AKBreaker contact gap ............0.020Breaker arm springpressure ..................21-25 oz.

Advance Data (degrees at flywheelrpm)

Start advance .............. 0 at 375Maximum advance ........ 17 at 2200

142. IGNITION TIMING. If the dis-tributor has been removed for service,reinstall same as follows : Crank engineuntil No. 1 (front ) piston is coming upon compression stroke and continuecranking slowly until TDC (0 degree)mark on crankshaft pulley is alignedwith the pointer extending from front

a nuVarnwa

Fig. 89-Wiring diagram of Series 424 and 2424 non-diesel tractors.

face of the timing gear cover. Turndistributor shaft until rotor arm is inthe No. 1 firing position and installdistributor.

To set static timing, proceed as fol-lows: Make certain that distributorbreaker points are in good conditionand set at 0.020. Loosen the distributormounting cap screws and retard distri-butor about 30 degrees by turningdistributor assembly in same directionas breaker cam rotates. Turn engineuntil No. 1 piston is coming up oncompression stroke, then continuecranking slowly until TDC mark oncrankshaft pulley is in register with thetiming pointer. Disconnect coil secon-dary wire from distributor cap and holdfree end of cable 1/16 to 1/8 inch fromdistributor primary terminal. Advancethe distributor by turning distributorbody in opposite direction from breakercam rotation until a spark occursbetween cable and primary terminal.Tighten distributor mounting capscrews at this point. Assemble sparkplug cables to the distributor cap in theproper firing order of 1311-2.

To set running timing, attach atiming light and start engine. Adjustengine low idle speed to 375 rpm. Atthis time, the timing light should showthe TDC mark in register with the tim-ing pointer. Then with engine speed setat 2200 rpm check to see that the 17degree advance mark is aligned withtiming pointer as shown in Fig. 88.After the preceding checks and adjust-ments have been made, readjust enginelow idle speed to 425 rpm.

ON 150(1

46



U

Dal

W tell

"Wine

Ix oa 9

IIson" wit ....

1

Paragraph 142 Cont.

swuix rmrx,

LIGNI an

sues" arrowP.M.

Fig. 90- Wiring diagram of Series 424 and 2424 diesel tractors.

Oil liniu ,.• i.a

11 10 15 402

Fig. 91-Wiring and e ectrical components use on er es an non- ese rac ors.

1. Pink 11. Gray 39. White 46. Gray2. Red 12. Red 19. Light green 30. Brown 40. Violet 46. Pink4. Violet 13. Light blue 20. Light green 31. Black w/white 41. Black w/white ,18. Red6. Light green 14. Orange w/black 21. Light blue tracers tracers 49. Red7. Light green w/hlack tracers 22. Light blue 32. Black 42. Light blue 50. Red

tracers 15. Orange 27. White w/black 33. White 43. White .,'block 51 Light III s9. White 16. Yellow tracers 34. Pink tracers L hl

10. Natural w/orange &purple tracers

17. Brown18. Pink

28. Black29. Black

37. Llghl green33. Tan

44. Black nt'whitetracers rN OranRu

21' 12 27 20 22

16 22 2014 -

f

we.rv,.N'5hu 2 33 34

;Ie.e.1 11 j 31

d 2444 di l tl d S i 444 t

49``43

,153^435244

1

47


Paragraphs 143-146

Is I,..n.B

mo. sew, : ^ 16

10^. 23^ - 3n


\48

39

45 41^/ ,,may

6- MJl^ 4 23 10 27 22 24 Will/ Y

Oil

'9 24 22

2011

29 30 Flex.,

34 30

Fig. 92-Wiring and electrical components used on Series 444 and 2444 diesel tractors.

1. Pink2. Red 11. Orange w/black 27. White w/black4. Violet tracers tracers5. Gray 16. Black 28. Black6. Light blue 20. Orange 29. Black7. Pink 21. Light green all. BrownS. Bro 22. Light green 31. Black w/white9. Yellow 23. Light blue tracers10. Red 24. Light blue 32. Black

CLUTCH

Series B-275-B -414-354 -364-384143. Tractor may be equipped with a

single plate or a dual plate clutch. Ser-ies 8-414. 364 and 384 have an 11-inchsingle plate clutch and Series 354 has astandard 10-inch or optional 11-inchheavy duty single plate clutch. Allmodels are available with the dualplate clutch which has an 11-inch maindriven member with a 9-inch pto drivenmember.

144. ADJUST . Adjustment to com-pensate for lining wear is accomplishedby adjusting the clutch pedal heightand free travel.

To adjust clutch pedal height, posi-tion clutch pedal by turning adjustingscrew (S-Fig. 93) until bottom ofclutch pedal measures 6-7/8 inchesfrom foot plate for Series B-275, 8-414,354, 364 and 384 tractors equipped withdual plate clutch. With single plate

33. WhiteN. Pink37. Light green38. Tan39. White40. Violet41. Black w/white

tracers

clutch, the measurement should be5-13/16 inches for Series B-414, 7inches on 364 and 384 and 7 inches for10 inch clutch or 4-9/16 inches for 11

Fig. 93-Clutch pedal of 8-275, 8-414, 354,364 or 384 tractor with dual plate Clutch.Refer to text for adjustment procedure andnote that on Series B -414 with single plateclutch , pedal height is adjusted to 5-13/16Inches . On Series 354, pedal height Is 7Inches for 10-Inch single plate clutch or4-9/16 inches for 11-inch single plate clutch.Pedal height on 364 and 384 with single

plate 11 - Inch clutch Is 7 inches.

42. Light blue43. White w/black

tracers44. Black w/white

tracers45. Gray46. Pink48. Red49. Red

W. Red51. Light green52. Light green53. Light green54. Orange55. Pink56. Black57. Black58. Red

inch clutch used on Series 354. Thepedal free travel of 1/4-inch (dual plateclutch) and 1-7/8 inch on 11 inch or7/8-inch on 10 inch (single plate clutch)is obtained by loosening retaining bolts(B-Fig. 93) and moving pedal aroundclutch cross-shaft. Clutch cross-shaftmay be held by using a wrench on flatsof cross-shaft outer end.

145. REMOVE AND REINSTALL.The procedure for removing and rein-stalling the clutch is evident aftersplitting the engine from the clutchhousing as outlined in the followingparagraph.

146. TRACTOR SPLIT. To separateengine from clutch housing, first raiseor remove hood. On Series B-275 and8414, remove battery shield, batteryhold-down and battery, or batteries.Remove battery tray and throttle bell-crank. On all series, if tractor isequipped with a down swept exhaust.disconnect exhaust pipe at manifold.

48



then remove exhaust pipe and muffler.Disconnect wires from alternator orgenerator, starter switch and ignitioncoil (non-diesel models), or number fourglow plug (diesel models). Disconnectbattery cable from starter and oper-ating rod from starter switch. On dieselmodels, disconnect fuel shut-off rod atinjection pump and remove rod. Onnon-diesel models, disconnect chokecontrol from carburetor. Close fuelshut-off valve and disconnect fuelsupply line from fuel pump. On dieselmodels, disconnect fuel return line fromfuel tank. On all models, disconnect oilpressure gage line from cylinder block.On Series B-275 and B-414, drain cool-ing system and remove temperaturesending unit from cylinder head. OnSeries 354, 364 and 384 disconnecttemperature gage wire and tachometercable. On all series, disconnect thepressure and inlet lines from hydraulicpump. Disconnect drag link from steer-ing gear drop arm on manual steeringmodels; or on models with powersteering, disconnect hoses from powersteering cylinder, cylinder from reac-tion bracket and drag link from steer-ing gear drop arm. Support clutchhousing, attach hoist to engine, thenunbolt and separate engine from clutchhousing.

NOTE: When rejoining engine toclutch housing, time can often besaved , particularly on dual plate clutchmodels , if the following procedure isused . Place clutch assembly on Inputshafts ( Fig. 94 ), then move sectionstogether until transmission input shaftpilot enters pilot bearing and flywheelbutts against clutch cover . Now boltclutch to flywheel and complete themating of engine and clutch housing bypulling sections together with the re-taining cap screws.

147. OVERHAUL (DUAL PLATE).

Fig. 94-Two concentric shafts are usedwhen tractors are equipped with dual plateclutches . Outer shaft (2) drives pto, Inner

shaft (1 ) drives transmission.

With tractor split as outlined in para-graph 146, proceed as follows: Removethe cap screws retaining the clutchcover assembly to flywheel and with-draw the cover assembly and 11-inchlined disc. Examine the clutch shaftpilot bearing in crankshaft and renewthe bearing if same is damaged orworn.

To disassemble the clutch coverassembly, proceed as follows: Carefullyplace punch marks on all of the compo-nents so they can be reassembled inthe same relative position. Place theassembly in a press with the coverassembly up. Place a bar across thecover and compress the assembly untilthe release levers are just free. Loosenthe lockouts and completely unscrewthe finger adjusting screws (41-Fig.95). Release the compressing pressureand disassemble the remaining parts.

Inspect all parts and renew thoseshowing damage or wear. New facingscan be riveted to the driven discs ifdiscs are otherwise in good condition.

To reassemble the unit, refer to Fig.95 and proceed as follows:

NOTE: It is important that a new 11-inch disc be used during adjustment ofclutch fingers and pto adjustmentscrews . The original 11-inch disc can bereinstalled after adjustment is completeproviding It is in serviceable condition.

Place the 11-inch pressure plate (32)on work bench with friction face down.Install the red marked Belleville washer(35) on pressure plate with convex sideup and outer edge in counterbore ofpressure plate. Align the previouslyaffixed punch marks and install fly-wheel plate (36). Position the 9-inchdriven disc (24) on flywheel plate withhub of same upward; then, again align-ing punch marks, install the 9-inchpressure plate (37). Install second (ht^^marked) Belleville washer (35) on

Fig. 95-Exploded view ofSeries B - 275, 8 -414, 354,364 and 384 dual clutch

and related parts.

24. 9" driven disc32. 11 pressure plate34. Cap screw ( special)35. Belleville washer36. Flywheel plate31. 9" pressure plate38. Bracket (cover)39. Spring40. Release lever41. Adjusting screw42. Lock pin43. Pivot pin44. Rod end45. Pin46. 11" driven disc

Paragraph 147

pressure plate (37) with concave sideup. Align punch marks and place clutchbracket (cover) (38) in position, usingcaution to see that outer edge of Belle-ville washer is in counterbore ofbracket (cover) (38). To facilitate start-ing of clutch finger adjusting screws,drop three cap screws through bracket(38) and flywheel plate (36), equidistantaround outer bolt circle. Start clutchfinger adjusting screws (41) and tighlu q

only enough to hold clutch parts inposition.

Install a NEW 11inch driven disc incounterbore of flywheel, with 'nubpointing away from engine. Pusitiur.clutch assembly on flywheel and startthe retaining cap screws. Install aligning tool (pilot) and tighten cap screws.See Fig. 96.

To adjust clutch, refer to Fig. 97 fortools required and proceed as follows:With clutch finger height gage in posi-tion as shown in Fig. 98 or 98A andwhile holding slightly on finger to takeout the slack, turn finger adjustingscrew until the 2-21/32 inches dimen-sion for Series B-275 and B-414 is

Fig. 96-Using aligning tool when installingdual plate clutch assembly to flywheel.

49


Paragraphs 148-149

VI IN. trot,

1/6 IN. cocci mock

L

4' h ane!t.oor

Fig. 98- Using special tool to adjust thedual plate clutch release lever height.Adjustment must be made with a NEW

11-inch driven disc installed.

Fig. 98A- Using special tool to adjust thedual plate clutch release lever height on 354,364 and 384. Adjustment must be made witha NEW 11-inch driver disc and RELEASE

LEVER PLATE installed,

50

Ii


Fig. 97- Tools used to ad-just the dual plate clutch.Tools can be made local-ly, using the dimensionsshown. Dimension "X" is2-21/32 inches for Ser-ies B -275 and B-414 and2-25/32 inches for Series424, 444, 2424, 2444, 354,

364 and 384.

obtained. On Series 354, 364 and 384,adjustment is 2-25/32 inches, measuredwith release lever plate installed. SeeFig. 98A. When adjustments are ob-tained, tighten locknut, repeat sameprocedure on other fingers. It isIMPORTANT that clutch fingers beadjusted to within 0.015 of each other.Use a box end wrench, or similar tool,and actuate each finger through its

.080-INCH FEELER GAGE

Fig. 99-Using special tool to adjust the0.080 clearance between the 9-inch pressure

plate and the releasing cap screws,

Fig. 100-Exploded viewof the single plate clutchused on B-414, 354, 364and 384 tractors without

constant running pto.

I Release bearing it cup2. Retainer spring3. Lever plate4. Retainer spring5. Clutch cover6. Anti-rattle spring7. Clutch spring6. Strut9. Release lever10. Pressure plate11. Clutch plate

normal range of travel several timesand recheck adjustment.

With finger adjustment made, referto Fig. 99 and set the clearancebetween the 9-inch pressure plate andadjusting cap screws. Loosen locknutsand turn adjusting screw until the0.080 thickness gage can just heinserted between head of adjustingscrew and 9-in. pressure plate. Tightenlocknuts.

148. OVERHAUL (SINGLE PLATE).With tractor split as outlined in para-graph 146, refer to Fig. 100 andproceed as follows: Unbolt and removecover assembly from flywheel. Disen-gage release lever plate retainers andremove release lever plate. Place clutchassembly in a press and apply pressureuntil release levers are relieved of ten-sion. Remove release lever pins, thenrelease press pressure and separateclutch assembly. Further disassemblyis obvious.

Component parts of clutch assemblyare catalogued separately, and in addi-tion, a facing package for the drivendisc is available for service.

Clutch pressure springs should havea free length of 2.68 inches and shouldtest 120-130 lbs. when compressed to alength of 1.69 inches, Adjust clutchrelease fingers to a height of 1.955inches, measured from contacting sur-face of fingers to friction face of pres-sure plate.

Series 424-444-2424-2444149. Tractors may be equipped with

a 11-inch single plate clutch or a dualplate clutch with a 11-inch main drivenmember and a 9-inch pto driven mem-ber. The single plate clutch is used intractors equipped with transmissiondriven pto and the dual stage clutch isused in tractors equipped with acontinuous running pto.

we

NNN

ON,

err

A



150. ADJUST. Adjustment to com-pensate for lining wear is accomplishedby adjusting the clutch pedal. First,adjust set screw shown in Fig. 101until pedal height is 6 inches (mea-sured from the foot rest to highestpoint on pedal flange). Then, loosenpedal clamp bolts and rotate the clutchpedal on clutch release shaft untile/4-inch free travel is obtained. Clutchcross-shaft may be held by using awrench on flats of cross-shaft outerend. Tighten the pedal clamp boltssecurely.

151. REMOVE AND REINSTALL.The procedure for removing the clutchis evident after splitting the enginefrom the clutch housing as outlined inthe following paragraph.

152. TRACTOR SPLIT. To separatethe engine from clutch housing, firstremove hood and drain cooling system.Disconnect battery cables and wiringharness multiple plug under instrumentpanel, then work harness forward untilit is clear of clutch housing.

On tractors equipped with mechan-ical steering , unbolt the steering shaftfront and rear bearing brackets fromthe fuel tank support and clutch hous-ing. Slide steering shaft forward andout of the master splined yoke.

On tractors equipped with powersteering , remove the steering tube clipfrom engine and disconnect the tubesfrom the power steering control valve.Plug and cap all openings to preventdirt from entering steering system.

Then, on all tractors , disconnect thefuel supply line, choke cable or fuelshut-off cable, engine speed control rodand tachometer cable. Remove thetemperature indicator bulb and discon-nect battery cable from the crankingmotor solenoid switch . Unbolt andremove the cranking motor . Unbolt theair cleaner bracket from fuel tank sup-port, place a wood block between fueltank and clutch housing and then,unbolt the fuel tank support fromengine. Remove the underslung ex-haust pipe , if so equipped.

Drain the hydraulic system and dis-connect the hydraulic pump pressureand suction lines . Plug and cap allopenings.

On diesel models, remove the clutchhousing front dust cover.

Then, on all tractors , unbolt stay-rodbracket from clutch housing and placewood blocks between steering gearhousing and front axle to prevent tip-ping. Support clutch housing , attach ahoist to engine , then unbolt and sepa-rate engine from clutch housing . Unboltand remove clutch from flywheel.

When rejoining engine to clutchhousing, place clutch assembly on thepto driving shaft (two stage clutch) andtransmission input shaft . Bolt engine toclutch housing , then working throughthe opening in bottom of clutch hous-ing, bolt clutch assembly to flywheel.

153. OVERHAUL (DUAL PLATE).With tractor split as outlined in para-graph 152, proceed as follows : Removecap screws retaining the clutch assem-bly to flywheel and withdraw the coverassembly and 11-inch lined disc. Exa-mine the clutch shaft pilot bearing inflywheel and renew the bearing if sameis damaged or worn.

To disassemble the clutch coverassembly, proceed as follows: Carefullyplace punch marks on all of the compo-nents so they can be reassembled inthe same relative position. Place theassembly in a press with the coverassembly up. Place a bar across thecover and compress the assembly untilthe release fingers are just free.Loosen locknuts and completely un-screw the finger adjusting screw (3-Fig. 102). Release the compressingpressure and disassemble the remain-ing parts.

Inspect all parts and renew thoseshowing damage or wear.

To reassemble the unit, refer to Fig.102 and proceed as follows: Place the

Fig. 101-View showingclutch pedal adjustmenton Series 424 , 444, 2424

and 2444 tractors.

Paragraphs 150-153

11-inch pressure plate (15) on workbench with friction face down. Installthe purple paint marked Bellevillewasher (14) on pressure plate withconvex side up and outer edge incounterbore of pressure plate. Alignthe previously affixed punch marks andinstall flywheel plate (13). Position the9-inch (pto) driven disc (12) on flywheelplate with hub of same upward. Then,again aligning punch marks, install the9-inch pressure plate (11). Install sec-ond (green paint marked) Bellevillewasher (10) on pressure plate (11) withconcave side up. Align punch marksand place clutch cover (9) in position,making certain that outer edge ofBelleville washer is in counterbore ofcover. Start clutch finger adjustingscrews (3) and tighten only enough tohold clutch parts in position.

Install a NEW 11-inch driven disc inflywheel, with hub pointing away fromengine. Position clutch assembly onflywheel and start the retaining capscrews. Install aligning tool (pilot) andtighten cap screws.

NOTE : It is important that a new11-inch driven disc be used duringadjustment of clutch fingers and ptoadjustment screws . The original 11-inchdisc can be reinstalled after adjustmentis complete providing it is in service-able condition.

Fig. 102- Exploded view of Series 424, 444 , 2424 and 2444 dual plate clutch assembly.

1 Pivot pin 6. Spring 9- Clutch cover 19. 1 lwln-,-1 11w,.

2 Lockout 6. Pivot block pin 10. Belleville washer 14. Belleville wm,a Adjusting screw 7. Pivot block 11. Pto pressure plate 15 - Pre^wre ple:e

4 Clutch finger 8. Retainer 12. Pto driven disc 18. Main driven disc

51


Paragraphs 154-161

To adiu,st clutch , refer to Fig. 97 fortools required and proceed as follows:With clutch finger height gage in posi-tion as shown in Fig. 98 and whileholding down slightly on finger to takeout the slack , turn finger adjustingscrew until the 2 -25/32 inch dimension(X-Fig. 97 ) is obtained and tightenlockout .. Repeat same procedures onother fingers . It is IMPORTANT thatclutch fingers be adjusted to within0.015 of each other . Use a box wrenchor similar tool , and actuate each fingerthrough its normal range of travelseveral times and recheck adjustment.

With finger adjustment completed,refer to Fig. 99 and set the clearancebet weed the 9-inch pressure plate andadjusting cap screws. Loosen lockoutsand turn adjusting screw until the0.080 thickness gage can just beinserted between head of adjustingsrrcw and 9- inch pressure plate. Tightenlocknuts.

154. OVERHAUL (SINGLE PLATE).With tractor split as outlined in para-graph 152, unbolt and remove clutchassembly from flywheel. Disassemblyprocedure is obvious upon examinationof the unit and reference to Fig. 103.

Clutch pressure springs should havea free length of 3.852 inches and shouldtest 152 lbs. when compressed to alength of 2.062 inches. Adjust clutchrelease fingers to a height of 2.569inches. measured from contacting sur-fa(e of fingers to friction face of pres-sure plate. Clutch cover to pressureplate friction face distance should be1.006 inches.

The "Dyna-Life" clutch driven disc(11-Fig. 103) is available as a unitonly.

RELEASE BEARING

All Models155. To remove the release bearing

first split tractor as outlined in para-graph 146 or 152. Disconnect the clutchpedal return spring and remove snapring or cotter pin and washer fromright hand end of clutch cross-shaft.Remove bolts and key from releasefork then tap cross-shaft toward leftside of clutch housing until release forkcomes off cross-shaft. Release fork.hr arl'.1Q and sleeve can now be. re-

moved by removing the three retainingcap screws. Any further disassemblyand/or overhaul is obvious.

NOTE: On Series 424 , 444, 2424,2444, 8-414, 354, 364 and 384, inserts!sleeves) are used on the lugs of therelease bearing sleeve ; when reassem-bling be sure flange of insert is be-tween release fork and bearing sleeve.


CLUTCH SHAFT shaft, refer to paragraphs 161 and 162.The clutch shaft for models equipped

All Models with forward and reverse transmission156. The clutch shaft for models not is the input shaft for the forward and

equipped with forward and reverse reverse transmission. For informationtransmission is the transmission input concerning this shaft refer to para-shaft. For information concerning this graph 167.

Fig. 103-Exploded viewof the single plate clutchassembly used on Series424, 444 , 2424 and 2444tractors without constant

running pto.

2. washer9. Adjusting screw4. Return clip5. Pivot pin6. Clutch fingerZ Pressure spring

s. C "td co er o®iv10 Pressure plate W`• 3 211. "Dyes-1,1W driven disc

TRANSMISSION

All Models

157. MAJOR OVERHAUL. Data forremoving and overhauling the varioustransmission components are as follows:

158. SHIFTER RAILS AND FORKS.To remove the transmission top coveron Series B-275, disconnect hose fromhydraulic system suction line and catchthe hydraulic oil. Unbolt hydrauliccontrol valve ]ever quadrant fromreservoir, then remove the suctionfilter. Disconnect hydraulic pressureline from control valve, then unbolt andremove hydraulic control valve. Placeboth shifter levers in neutral, thenunbolt and remove transmission topcover. See Fig. 104.

159. To remove the transmission topcover on Series 424, 444, 2424, 2444,B-414, 354, 364 and 384, disconnecthose from hydraulic system filter andcatch oil, then remove the suction

Fig. 104- View of the as-

sembled gear shifting me-

chanism contained in the

transmission top cover.

Mechanism will differ on424, 444 , 2424, 2444,B-414 , 364 and 384 traptors equipped with forwardand reverse transmission.Refer to Fig , 105 for

legend.

filter. Disconnect the pressure linefrom cylinder head of control valve.Unbolt hydraulic lift housing from rearframe and either remove the housing,or block it up high enough to allowremoval of transmission top cover.

Place both shifter levers in neutralposition , then unbolt and remove trans-mission top cover. See Fig. 104.

160. With transmission top coverremoved, secure same in a vise,straighten cap screw locks (28-Fig.105), then unbolt and remove guidebrackets (27). Shifter forks, rail guidesand detents can now be removed. Fur-ther disassembly, if required, is obvi-ous.

161. DRIVING (INPUT) SHAFT. Toremove the transmission driving ( input)shaft , the transmission case must beseparated from clutch housing as fol-lows: Disconnect hydraulic system suc-tion line from lower right front of

52



hydraulic reservoir and drain system.Disconnect hydraulic pressure line fromcontrol valve. Remove lower instru-ment plate, disconnect rear side lightwire and remove clip which retainshydraulic lines to fuel tank support.Unbolt front of left step plate fromclutch housing then, if equipped withdownswept exhaust, either disconnectmuffler from rear frame or exhaustpipe from manifold. On Series 354, 364and 384, disconnect foot accelerator ifso equipped, disconnect wiring harnessat connector under fuel tank, thenunbolt footplate from transmission caseand clutch housing. On all series, drainoil from transmission and on dual plateclutch models, drain clutch housing.Remove all covers from bottom ofclutch housing and if tractor is a dualplate clutch model remove the plug and"0" ring from clutch housing at front ofpto driven shaft. Remove snap ring andwasher or nut and washers from end ofshaft. If tractor is equipped with for-ward and reverse transmission, discon-nect shifter lever link, remove shaftretaining plate and shims, then pullshifter shaft connector shaft outwardas far as it will go. Wedge front axle toprevent tipping, support both sectionsof tractor, then unbolt and separate

transmission from clutch housing. SeeFig. 106.

NOTE: On tractors equipped withtransmission driven pto , six mountingcap screws are located Inside the clutchhousing . On tractors equipped withconstant running pto, four mountingcap screws are located inside the clutchhousing.

162. With transmission separatedfrom clutch housing, remove the hy-draulic control valve and the transmis-sion top cover as outlined in para-graphs 158 or 159. Engage pto shifterlever, then unbolt retainer (2, 17, 24 or31-Fig. 107) and remove the pto rearshaft assembly.

NOTE: It it is desired to removeclutch (10) it will be necessary toremove snap ring (6 , 21, 27 or 34)before clutch will pass through bearingbore.

On models with dual plate clutches,and no forward and reverse transmis-sion, remove the front pto shaft (29-Fig. 106) by sliding same rearwardafter disengaging clutch and eitherremoving same from housing or allow-ing it to remain on floor of housing. On

Fig. 105-Exploded viewof the gear shifting me-

chanism.

1. HighLow range shifter2. Shifter shaft3. oil seal4. Decent ball5. Detent spring6. Expansion plug8. Gearshift lever9. Large swivel shaft10. Filler plugII. Spring stop12. Spring13. Retainer14. Felt washer15. Plain washer16. Shield17. Transmission top cover18. Gasket19. Small swivel shaft20. High-Low shifter cam21. High speed shifter fork22. Left rag guide23. 4th speed shift fork24. Inner rail guides25. 2nd & 3rd shift fork26. tat & rev. shift forkV. Fork & guide bracket28. Lock29. Right rail guide30. Low speed shift fork

Paragraphs 162-163

dual plate clutch models, remove aoumtershaft nut (40-Fig. 108) then renmt,ebearing retainer (41). On single plateclutch models, remove retainer (41--Fig. 109), then remove countershaftretainer (45).

On models Willi direction rectr.el'-remuve reUtiner 16 f'itj _.,..loosen nut (40). Loosen direction re-verser housing from face of transmis-sion housing and pull direction reverserunit as far forward as possible, thencomplete removal of nut (40) and lock-washer (39). Slinger (45) must beremoved prior to removal of front pto

shaft.On all models, remove bearing (38)

from front end of countershaft.

NOTE : It is highly recommended thatInternational Harvester tool FES 44-3 beused to remove bearing and snap ringassembly (38). Bearing is a tight fit oncountershaft and it wedged off by using

pinch bars , damage to snap ring and/or

bearing could result.

On all models with no directionreverser, remove cap screws frominput shaft bearing retainer i25L Onmodels with direction re:easer. courplete removal of direction reverserhousing retaining cap screws, if neces-sary.

Push down on forward end ofcountershaft to provide clearance forteeth of input shaft and withdraw inputshaft or reverser unit.

Any further disassembly of the inputshaft used on models with no directionreverser is obvious. For information onthe input shaft used in models withdirection reverser, refer to paragraph167.

163. SPLINE SHAF'T'. Henluva.the spline shaft requires removal of thehydraulic lift attachment ( or the hous-ing rear top cover ), in addition to split

Fig. 106- Transmission assembly shownseparated from clutch housing . Tractor

shown is a B -275 dual plate clutch model.however, B-414 , 424, 444, 2424, 2444. 354,

364 and 384 series tractors are I'll ;a(Single plate clutch models will not have

front plo shaft (29) and will have a cover type

retainer instead of retainer (41) shown.

53


Paragraphs 164-165

Ling the tractor and removing the driv-ing (input) shaft or direction reverseras outlined in paragraphs 161 and 162.

With tractor split and the driving(input) shaft or direction reverserremoved, disconnect lift arms fromrnrk,vhaft, then unbolt and lift offhydraulic lift assembly. Unbolt thespline shaft bearing retainer (6-Fig.108 or 109) and withdraw spline shaftas a unit. See Fig. 110.

NOTE: On Series 364 , 364 and 384,the spline shaft and bevel ring gearhave been cut using either the Oerlikonor Gleason system of gear cutting,resulting in different tooth curvature.The spline shaft with Gleason cut teethcan be removed without disturbing thebevel ring gear . On tractors having theOerlikon cut teeth , remove right brakehousing and loosen right bull pinionbearing cage cap screws to provide thenecessary clearance to remove thespline shaft assembly.

On all series, after removing gearsfrom spline shaft, disassembly can becompleted as follows: Unstake lock-washer (10-Fig. 108 or 109) andremove locknuts (9). Use a suitablepress and press spline shaft out oftapered bearings. Save spacer (4) andshims present for subsequent reinstall-ation. Bearing cups can be driven fromretainer.

164. If original parts are to be used,reassemble components to shaft byreversing disassembly procedure. How-ever, if incorrect bearing adjustment issuspected, or new parts are installed,check the bearing preload as follows:Assemble bearings, spacer, shims, andhearing retainer to spline shaft andLighten locknuts securely. Clamp splineshaft in a vise, wrap a length of cordaround bearing retainer and check theamount of pull on a spring scalerequired to keep the bearing retainerrotating. This measurement should be2.6 lbs. on the spring scale which isequivalent to 5-15 in.-lbs. preload. Ifpreload is not as specified, vary shimsbetween spacer (4-Fig. 108 or 109)and bearings until preload is correct.Shims are available in thicknesses of0.002, 0.004 and 0 .010. Stake lock-washer when adjustment is completed.Check and adjust, if necessary, thecone center depth as outlined in para-graph 170.

165. COUNTERSHAFT. Removal oftransmission countershaft can he ac-cnmplished after spline shaft is re-mnvrd as outlined in paragraph 163.

With spline shaft removed, removesnap ring (27-Fig. 108 or 109) anddrive bearing (28) from countershaft


Fig. 107-Exploded viewof various pto rear (output)shafts . Items I through 7are used on Series 354,364 and 384 , items 16through 22 are used on424, 2424 , 444 and 2444,items 23 through 29 areused on B-414 and items30 through 35 are used on

8-275.

1. Oil seal2. Retainer3. Collar4. Bearing5. Gasket6. Snap ring7. Shaft8. Bushing9. Snap ring10. Clutch11. Shifter12. Gasket13, Residua14. Oil seal15. Shift lever16. Oil seal17. Retainer18. Snap ring19. Collars20. Bearing21. Snap ring22. shaft23. Oil seal24. Retainer25. snap ring26. Bearing27. Snap ring28. Collar29. Shaft

30. Oil seal31. Retainer

32. Snap ring33. Bearing

w

a-

21"

.34. Snap ring35. Shaft

18 1920 4l

28

36 I

Fig. 108-Exploded view of transmission shafts, gears and component parts used whentractor Is equipped with constant - running pto (duel plate clutch ). Items shown in inset are

used when equipped with forward and reverse transmission . Refer also to Fig. 109.

1. Spline shaft 36. Bushing least ironl2. Bearing cone 14. 4th & direct gear 25. Bearing retainer 37. Spacer3. Bearing cup coupling 26. Pto driving shaft nil 38. Ball bearing & snap4. Spacer 15. 4th & drect sliding seal ring5. Shims q ar coupling 27. Snap ring 39 Lockwvasher6. Bearing retainer 16. SlidinF quill gear 28. Ball bearing 40. Lockout7. Bearing cup 17. Coupling N. Front pto shaft 41. Bearing retainer8. Bearing cone 18. Pilot bearing 30. Countershaft 42. Snap ring9. Lockout 19. Driving (input) shaft 31. Woodruff keys Rev. idler driving43.

10 sLock,v e 20 Sna rin eed drive gear32 2nd s. ha s12. 1st & r.. sliding

. p g21. Ball bearing

. p33. 3rd & 4th speed

344. Reev. are, gear R

gear 22. Snap ring driving gear shaft13 . 2nd & and sliding 23. Driving shaft nil seal 34. Coupling 45 Slinger

gear 24. Gasket 35. Constant mesh gear 46. Bearinc retainer

fe^

17 \ 24 3^4I0 I

37 38 `-

54



42 43 44

Paragraphs 166-167

Fig. 109- Exploded view of the transmission shafts, gears and component parts used when

tractor Is equipped with transmission driven pto (single plate clutch ). Note the solid

countershaft (30). Refer also to Fig. 108.

1. Spline shaft 10. Lockwasher2. Bearing cane 12. 1st & rev. sliding3. Bearing cup gear 18. Sliding quill gear 23. Oil seal

Spacer4 13. 2nd & 3rd sliding 17. Coupling 24. Gasket.5. Shims gear 18. Pilot bearing 25. Bearing retainer

6. Bearing retainer 14. 4th & direct gear 19. Driving (input) shaft 27. Snap ring7. Bearing cup coupling 20. Snap ring 28. Ball bearing8. Bearing cone 15. 4th & direct sliding 21. Ball bearing W. Countershaft9. Lockout gear 22. Snap ring 31. Woodruff keys

using a soft drift positioned on innerrace of bearing. Lift out countershaft.

Slide off constant mesh gear (35) andbushing (36). Gears (32 and 33) can nowbe pressed from shaft. See Fig. 111.

NOTE : When reinstalling counter-shaft , bear in mind that the front end

Fig. 110- Removed spline shaft showinggears and pilot bearing (18). Refer to Fig.

108 or 109 for legend.

Fig. 111-Dismantled countershaft from trac-tor having dual plate clutch. Note the hollow

shaft. Refer to Fig. 108 for legend.

will have to be pushed downward beforedriving (input) shaft can be Installed.

Install the countershaft as follows:Place gears on shaft and install assem-bly in housing. Install front bearing andbearing retainer to position shaft, theninstall rear bearing and snap ring.Remove front bearing retainer andbearing and install spline shaft andinput shaft, or direction reverser shaft.Reinstall front bearing, bearing re-tainer and nut (or retaining washer)and tighten nut (40-Fig. 108) to atorque of 30-35 ft.-lbs. Check end playof constant mesh gear (35) whichshould be 0.005-0.010. If end play isinsufficient, drive countershaft forwardand retorque nut or retaining washercap screws.

NOTE : Insufficient and play of con-stant mesh gear can only be caused byincorrect assembly of countershaftcomponents.

166. REVERSE IDLER. To removethe reverse idler assembly, first re-move the driving (input) shaft or direc-tion reverser, spline shaft and counter-shaft as outlined in paragraph 161through 165, then remove snap ring(42-Fig. 108 or 109) and removereverse idler assembly from housing.

NOTE: Some mechanics prefer toremove the right bull gear to provideeasier access to snap ring.

Check reverse idler gear shaft andbushings against the values whichfollow:

32. 2nd speed drive gear 41. Bearing retainer33. 3rd & 4th speed 42. Snap ring

driving gear 43. Rev. idler driving34. Coupling

M.35. Constant mesh gear 44. Rev, idler gear36. Bushing (cast iranl shaft37. Spacer 45. Retaining washer38. Ball bearing & snap 46. Lock platering 47 . Gasket

Shaft front diameter 1.249-1.2_,0Shaft rear diameter 0.991-0.992Front bushing inside

diameter . . ....... . ... 1.251-1253Rear bushing inside

diameter ... .. 0.9930.995Operating clearance ........0.001-0.004

When renewing reverse idler bust,-

ings, install bushings with the split atthe bottom . Remove expansion plug atfront of transmission case and reambushings to specified size. Use sealingcompound and renew expansion plug.

FORWARDAND REVERSETRANSMISSION

Series B-414-424-444-2424-2444--364-384

Series B-414, 364, 364, 424, 444, 2421and 2444 tractors are available with nforward and reverse transmission wiaprovides eight speeds in reverse aswell as the eight forward speeds.Transmission is a self-contained unitmounted on front face of main trans-mission housing and is controlled by alever mounted on left side of clutchhousing. See Fig. 112,

167. R&R AND OVERHAUL. Toremove the forward and reverse trans-

55


Paragraph 167 Cont . INTERNATIONAL HARVESTER

mission, split tractor between clutchhousing and transmission as outlined inparagraph 161.

With tractor split, remove bearingretainer ( 46-Fig. 108), and loosen nut(40) until it reaches cluster gear ofdirection reverser. Loosen for remove)

d i ; 9 nn reverser to transmission hous -rig and pull unit" forward as far as

possible. Complete removal of nut (40)and lockwasher (39). Remove bearingand snap ring assembly (38). Pushdown on forward end of countershaft toprovide clearance and withdraw theforward and reverse unit.

NOTE: It is highly recommended thatInternational Harvester tool FES 44-3 beused to remove bearing and snap ring(38). Bearing Is tight fit on countershaftand if wedged off by using pinch bars,damage to snap ring and /or bearingcould result.

With unit removed, refer to Fig. 113,remove lockbolt (23), then drive roll pin(28) from countershaft (26) and removecountershaft, spacer (30) and clustertear (33). The two needle hearings (32)i-u1 now be removed from clustergear, if necessary.

Remove lockholt (23) and snap ring41) from idler shaft, then slide thrust

washer (40) rearward and remove thesmall locking pin from its bore in idlershaft. Idler gear shaft (29), idler gear1301. needle hearing (38), bearing sleeve(39) and thrust washers (34) can nowbe removed. Needle bearing can nowbe removed from idler gear, if neces-sary.

Remove shifter rail (24), detent ball(11) and detent spring (10), thenremove snap ring (4) and bump inputshaft (3) and bearing assembly (5) fromhousing. Bearing can be removed frominput shaft after removing snap ring(6).

Remove snap ring (12) and inputgear (13) from aft end of clutch shaft171, remove fork shoes (8), then bump

clutch shaft (17) forward and out ofbearing. Remove snap ring (14) andhump hearing (15) rearward out ofhousing. Oil seal (21) and pilot hearing(16) can now be removed, if necessary.

Drive roll pins from shifter fork (9)and shaft (20) and remove fork andshaft.

Inspect all gears for chipped, brokenor unduly worn teeth. Check shifterfork shoes in groove of output gear andrenew shoes and/or gear if excessiveclearance is present. Check condition ofthrust washers and needle bearings ofcluster gear and idler gear, and payparticular attention to bearing sleeve(39). Be sure the small sealing ball (25)is securely in place in forward end of

Fig. 112-Forward and re-verse transmission mountson front face of transmis-

sion housing as shown.

Fig. 1124-Forward andreverse transmission withcluster gear and idler gear

removed.

20 22 21

17

14 158 9 \

12is

v10 % 'N 16

6

25

3

32 tY S 3630 ^

38

ten 3941

Fig. 113-Exploded view of the forward and reverse transmission which Is available for theSeries 364 , 384, 424, 444, 2424, 2444 and B-414 tractors.

2. Pilot bearing3. Transmission input 10. Poppet spring 20. Shifter fork shaft

shaft 11 . Poppet ball 21. Oil seal4. Snap ring 12. Snap ring 22. Housing5. Ball beanng 13. Input gear 23. Locking bolt6. Snap ring 14. Snap ring 24. Shifter rail7. Output gear 15. Be[[ bearing 25. Steel ball8. Shifter fork shoes 16. Needle bearing 26. Countershaft9. Shifter fork 17. Clutch shaft 28. Groove pin

29. Idler shaft30. Spacer32. Needle bearingan Cluster gear34. Thrust washer36. Idler gear38. Needle bearing40. Thrust washer41. Snap ring

W

Ma

56



cluster gear shaft. Ball bearings shouldturn freely with no lumpy (tight) spots.

Reassemble by reversing the disas-sembly procedure. Oil seal (21) isinstalled with lip facing toward rear of

housing. Large gear of countershaftcluster gear (33) is toward rear. Shiftergroove of output gear (7) is towardrear . The small locking pin in idler gearshaft fits in notch of thrust washer

MAIN DRIVE BEVEL GEARSAND DIFFERENTIAL

RENEW BEVEL GEARS

All Models168. To renew the bevel pinion,

follow the procedure for overhaul ofspline shaft given in paragraphs 163and 164. To renew the main drive bevelring gear, follow the procedure foroverhaul of differential in paragraph173.

Neither bevel pinion, nor ring gear,are available separately and renewal ofone necessitates the renewal of theother. After renewal of gears, checkand adjust, if necessary , the carrierbearing adjustment, the mesh positionand backlash as follows:

169. DIFFERENTIAL BEARINGPRELOAD. Prior to making either themesh or backlash adjustments, thepreload on the differential carrier bear-ings should be established. To adjustthe taper roller bearings (7-Fig. 115),first install more than enough shims (2)under each of the differential bearingcages so that differential has a slightamount of end play and make certainthere is some backlash between thering gear and pinion. Wind a cordaround the machined diameter of leftdifferential case half, attach springscale to end of cord and check theamount of pull required to keep thedifferential rolling once it has started.Record this reading.

Now remove an equal amount ofshims (2) from each side until the bear-ing preload requires 6 to 10 poundsmore than the previously recorded pullon the spring scale to keep the differ-ential rolling at a constant speed.

170. MESH POSITION. The meshposition (cone point distance) is con-trolled by shims (5-Fig. 108 and 109)located between spline shaft bearingretainer and wall of transmission case.The correct cone point distance will befound etched on the machined aft endof spline shaft and represents thedistance from machined end of shaft tocenter line of differential. The nominalradius of the left hand differential case

half is 3.938 inches at its machinedsurface, however, it should be mea-sured at several points to insureaccuracy. Mesh position is correct whenthe distance between end of spline shaftand machined surface of left half ofdifferential case is equal to the differ-ence between the etched cone pointdistance and the radius of the differ-ential case . For example : If the etchedcone center distance was 4 .423 and thedifferential case radius 3.938 , the differ-ence would be 0.485 which is themeasureable distance between end ofspline shaft and the differential case.Shims are available in thicknesses of0.0016, 0.006 and 0.0108.

NOTE : Do not confuse cone centerpoint markings with the gear matchingnumbers.

1 3

Paragraphs 168-171

(40).Reinstall by reversing the removal

procedure and tighten the countershaftnut (40-Fig. 108) to a torque of 30-35ft.-lbs.

171. BACKLASH ADJUSTMENT.After the carrier bearings are adjustedas outlined in paragraph 169, and themesh position, adjusted as outlined iiiparagraph 170, the backlash can beadjusted as follows: Transfer shims(2-Fig. 115) from under one bearingcage to the other to provide correctbacklash between teeth of the maindrive bevel pinion and bevel ring gear.The backlash value will be etched onthe outer machined face of the ringgear and may vary between gear sets.To decrease backlash, remove shim, orshims , from cage on bevel ring gearside of housing and install same undercage on opposite side. Only transfershims , do not remove shims or thepreviously determine carrier bearingadjustment will be changed.

19Fig. 115- Exploded view of differential , bull pinion shafts and associated parts . Shims (2)

control carrier bearing preload and gear backlash adjustments.

1. L.H. bearing cage2. Shims 6. Bearing cup 10. Differential side gear 16. Right differential3. Oil seal 7. Bearing cone 11. Pinion shafts half4. Ball bearing 8. Lock Abates 12. Differential pinions 16 . R.H. bull pinion5. L.H. bull pinion 9. Left differential half 14 . Bevel ring gear 19. R.H. bearing cage

57


Paragraphs 172-173 INTERNATIONAL HARVESTER

Fig. 116-Sectional view o f differential, bull pinions and brakes. Note differential lock whichoperates through hollow right hand bull pinion shaft.

172. TOOTH CONTACT. If desired,the bevel pinion and bevel ring gearadjustment can be finally checked asfollows: Paint several teeth at 90degree intervals with Prussian Blue orred lead and rotate pinion in bothdirections. Correct adjustment willresult in patterns similar to thoseshown in Figs. 117 and 118.

Fig. 117- Correct mesh and backlash willleave pattern shown when pinion shaft Isturned to produce forward motion . Refer to

text.

Fig. 116-Correct mesh and backlash willleave pattern shown when pinion shelf Isturned to produce reverse motion . Refer to

text.

DIFFERENTIAL AND CARRIERBEARINGS

All Models

173. R&R AND OVERHAUL. Toremove the differential first draintransmission case , then either removedifferential top cover, if so equipped, ordrain and remove the hydraulic lift unitas outlined in paragraph 207 or 209.Support rear of tractor in a raisedposition and remove rear wheels.Wedge front axle as an aid to preventtractor from tipping. Remove capscrews from bearing retainer of rearpto shaft and remove shaft and bearingassembly.

On Series B-275, B-414, 354, 364 and384 unbolt right hand step plate (plat-form) and hand brake from rightfender. Remove cap screw (1-Fig. 121)from inner end of axle shaft, unboltaxle carrier (8) and remove axle, axlecarrier and fender as a unit.

On Series 424, 444, 2424 and 2444,unbolt and remove the right fender.Remove snap ring (1-Fig. 122) andunbolt bearing retainer (10), then

Fig. 119-Exploded viewof the differential lock

assembly.

1. Groove pin2. Clutch3. Spacer4. Dowel pin5. Shaft6. Spring7. Collar8. '0" r gg retainer9. Inner ^'0" ring

10. Oil seal11. Outer "0' ring12. Retaining ring13. Cam plate14. Lever15. Thrust plate16. Pivot bolt11. Return spring18. Spring anchor

withdraw axle shaft (11).

NOTE: The axle and axle carrier canbe removed as a unit to renew axlecarrier gasket (3).

On all models where axle is a tightfit in the bull gear hub, a cap screwand nut can be used in conjunction witha short piece of pipe as a pusher.

On Series 424, 444, 2424 and 2444remove the battery, then on all modelsunbolt and remove the left fender.Follow same procedure as outlinedbefore and remove left hand axle andaxle carrier. Lift bull gears from rearframe.

With axle and axle carrier assembliesremoved, remove the differential lockthrust plate and lever from right brakehousing. Depress "0" ring retainer(8-Fig. 119) and remove the retainingring.

On Series B-275 and early productionB.414 tractors, loosen jam nut at brakeoperating rod and unscrew brake rodassembly from yoke.

On Series 354, 364, 384, 424, 444,2424, 2444 and late production B-414tractors, disconnect the brake pedalreturn springs and remove the brakeadjusting rod pin.

Then, on all models , unbolt brakehousing and remove housing, outerbrake disc, actuating assembly andinner brake disc. Unbolt and removebull pinion shaft bearing cage and bullpinion shaft. Bearing cages can usuallybe withdrawn with no difficulty, how-ever, should a tight fit be encountered,tapped holes are provided for pullerscrews. Use of puller screws usuallycauses shim damage which requiresrenewal of shims.

Removal of left brake, bull pinionshaft bearing cage and bull pinion shaftis accomplished in a like manner exceptthat no differential lock is involved.

Differential assembly can be liftedfrom rear frame after bull pinion shaftsare removed.

ass

wv

58



174. To inspect and/or overhaulremoved differential, straighten lockplates (8-Fig. 115), unbolt and sepa-rate the differential case halves. Pinionshafts (11) can be driven off pins at thistime. Any further disassembly and/oroverhaul is obvious after an examina-tion of the unit.

When reinstalling differential assem-bly, adjust preload on carrier bearingsas outlined in paragraph 169. Adjustmesh position as outlined in paragraph170 and backlash as outlined in para-graph 171.

plate and lock shaft as shown in Fig.120.

FINAL DRIVEThe final drive consists of two bull

pinions and integral brake shafts andtwo bull gears which are splined to theinner ends of the rear axle shafts. Eachaxle shaft is carried In a sleeve which isbolted to the side of the transmissioncase.

AllDIFFERENTIAL LOCK

All ModelsAll tractors are equipped with a

differential lock which operates throughthe right hand bull pinion shaft and iscontrolled by a foot pedal mounted onthe right hand brake housing.

Operating the differential lock con-nects the two bull pinion shaftstogether which causes the differentialto act as a solid hub and the drivingwheels to operate as though they wereon a common shaft.

Refer to Fig . 119 for an explodedview of the differential lock.

175. R&R AND OVERHAUL. Re-moval and overhaul of the differentiallock requires removal and separation ofthe differential assembly as outlined inparagraphs 173 and 174.

Overhaul of the unit is obvious.Springs (6-Fig. 119) can be checked byusing the following specifications:

Free length ..................3-5/8 in.Test length ................2-1/8 in.Test load ............... ....54.8 lbs.

When reassembling, adjust differen-tial lock thrust plate by means ofadjustment washers until there is 1/32to 1/16 inch clearance between cam

ADJUSTMENT JWASHERS :

Fig. 120- Use adjustment washers as shownto adjust cam plate clearance.

Models176. R&R WHEEL AXLE SHAFT.

To remove either wheel axle shaft, pro-

Fig. 121-Exploded viewof axle, axle carrier andcomponent parts used onSeries 6-275 , 6-414, 354,

364 and 384.

1. Cap screw2. Retainer3. Bull gear4. Gasket5. Snap ring6. Ball bearing7. Collar8. Axle carrier9. Bell bearing

10. Oil seal11. Felt ..her12. Gasket13. Bearing retainer14. Axle shaft

Fig. 122-Exploded viewof axle , axle carrier andcomponent parts used onSeries 424, 444, 2424 and

2444.

I. Snap ring2. Bull gear3. Gasket4. Snap ring5. Ball bearing6. Axle carrier7. Ball bearing8. Oil seal9. Gasket

10. Bearing retainer11. Axle shaft

Paragraphs 174-176

teed as follows: Drain transmissionhousing. Remove rear frame top cover,if so equipped, or drain hydraulic liftreservoir and remove same as outlinedin paragraph 207 or 209 . Wedge frontaxle to aid in preventing tractor fromtipping, then raise and support rear oftractor. Remove rear wheel and tireassembly. Disconnect rear light wires.

On Series B-275, B -414, 354, 364 and384 remove cap screw ( 1-Fig. 121),unbolt axle carrier ( 8) and withdrawaxle, axle carrier and fender assembly.

On Series 424, 444, 2424 and 2444,remove snap ring (1 -Fig. 122), unboltaxle carrier (6) and withdraw axle, axlecarrier and fender assembly.

59


Paragraphs 177-180

NOTE: Although the axle carriers andfenders can be removed as a unit, somemechanics prefer to remove the fendersbefore removing the axle carriers.

Use a cap screw and nut in conjunc-tion with a short piece of pipe if apuchur is required to push axle frombull gear.

With axle and carrier removed, un-bolt bearing retainer, bump axle oninner end and drive axle out of axlecarrier. Remove snap ring and driveout axle inner bearing. Any furtherdisassembly required is obvious.

Use new oil seals and gaskets andreassemble by reversing the disassem-bly procedure.

177. R&R BULL GEARS . To removethe bull gears, first remove the wheelnyhr shafts as outlined in paragraph176. 1 lnholt. the rear pto shaft bearingretainer and remove the rear pto shaft.Bull gears can now be removed,however, the left bull gear must be outof housing before enough clearance isavailable to lift out right bull gear.Bear this is mind when occasions arisewhich dictate work on right bull gear.


NOTE: In a few isolated cases aclicking noise has occurred in the axleand bull gear assembly of the SeriesB-275 tractors and the cause has beendetermined by the manufacturer to beexcessive clamping between bull gearand axle. This noise is not conducive tofailures , however , it may tend to beobjectionable and may be eliminated asfollows:

Remove rear frame top cover, if soequipped, or the hydraulic lift reser-voir, then remove the cap screw andretaining washer from inner end ofaxle. Place a straightedge across hubof bull gear and measure distancebetween end of axle and straightedge.If this distance is excessive, add shims(Inc part No. 3042081R1) as shown inFig. 123 until clearance is 0.000-0.005.Reinstall cap screw and retainer andhydraulic lift reservoir.

178. R&R BULL PINION SHAFTS.To remove either bull pinion shaft, firstremove bull gear as outlined in para-graph 177. Remove right brake as fol-lows: Remove differential lock thrustplate (15-Fig. 119) and lever (14).Push "0" ring retainer (8) inward and

remove retainer (12). Disconnect thebrake operating rod, then unbolt andremove brake housing, actuating as-sembly and inner disc. Left brake canbe removed after brake operating rodis disconnected as no differential lockmechanism is involved.

Remove the cap screws which retainbull pinion shaft bearing cage to rearframe and withdraw same . Bearingcages usually are withdrawn with nodifficulty, however, if difficulty is en-countered tapped holes are provided inbearing cages to permit use of pullerscrews.

NOTE: The use of puller screwsusually results in damage to shims(2-Fig. 115 ) and when renewing besure to Install the same thickness ofshims as were removed in order topreserve the carrier bearing preload.Shims are available in thicknesses of0.004, 0.007, 0.015 and 0.032.

Disassembly of the bull pinion shaftand bearing cage assembly is obviousafter an examination of the unit andreference to Fig. 115. Bearing cup,shaft, ball bearing and oil seal areremoved from inner end of bearingcage.

BRAKES

FILL WITH SHIMSUNTIL CLEARANCEIS 0000-0005

Fig. 123- Schematic view showing positionof shims used to eliminate axle noises.

All Models179. Brakes are double disc, self-

energizing type and are splined to theouter ends of the bull pinion shafts.The moulded type linings are riveted tothe discs and brake lining service pack-ages are available for renewing thelinings.

Series B-275 and early productionB414 tractors are equipped with the5-3/8 inch brakes shown in Fig. 125.B414 tractors having serial number31374 and up (diesel) or 4360 and up(non-diesel) and all Series 354, 364, 384,424, 444, 2424 and 2444 tractors areequipped with 6'h inch brakes. SeeFig. 127.

180. ADJUST. To adjust the brakeson Series B-275 and early B414 trac-tors, loosen jam nut (9-Fig. 124) andturn rod (3) either way as required toobtain a pedal free travel of 3/4-inch.Tighten jam nut.On Series 354, 364, 384, 424, 444,

2424, 2444 and late B414 tractors,loosen the locknut and turn adjustingnut either way as required until1"/4-inches pedal free travel is obtained.Tighten locknut. Refer to Fig. 126 forlocation of adjusting nut.

To equalize the brakes on all models,first block up rear of tractor securely,start engine and shift transmission into

Fig. 124-Leff brake of B-275 tractor show-ing brake rod and points of adjustment. Stepplate has been removed for illustrative pur.poses . Early Series B-414 tractors are

similar . Refer to Fig . 125 for legend.

60



3

Fig. 125-Exploded viewshowing component partsof Series B - 275 right handdisc brake assembly. Early

Series B-414 are similar.

1 1.11. pedal2. Return spring3. ;raked4. Washer5. Rod spring6. Rod bell7. Spacer8. Sam nuts9. Jam out

10. Rod yoke11. Pin12. Male link13. Female link14. Spacers15. Quadrant (rack)16. Hand lever17. Boot18. Brake housing19. Outer brake disc20. Actuating disc21. Extension spring22. Steel ball24. Inner brake disc

Paragraphs 181-182

Disassembly of brakes is ohs ion,upon examination of the units and reference to Figs. 125 and 127 . Wash allparts except the linings in solvent.Inspect all parts and renew deferti, e

or worn parts as necessary.On Series 11 -275 and early 11 411 a n^

tors, if brake operating rod isbled, reset the spring preload by

turning down first jam nut ( 8-Fig.125) until spring ( 5) is compressedsolid , then back off nut three turns.Install second jam nut ( 8) and tightenagainst first to hold this setting.

On Series 424, 444 , 2424, 2444 andlate B -414 tractors , pin the brakeoperating rod in the front ( 19-1 ratio)hole in foot pedal for normal operationand in operations where increasedbraking is desired , install pin in rear( 25-1 ratio) hole.

POWER TAKE-OFF

Link pin' Operatinglever pin

Washer

Adjustingnot

Cotter pin" Lock not

Washer

third or fourth gear. With the pedalslatched together, apply the brakes, Ifboth wheel stop at the same time, theadjustment is satisfactory. If not,loosen the adjustment slightly on thetight brake until equalization is ob-tained.

181. R&R AND OVERHAUL. Toremove right brake, proceed as follows:Remove differential lock thrust plateand pedal. On Series B-275 and earlyB-414 tractors, loosen jam nut (9-Fig.125) and unscrew brake operating rodfrom yoke. On Series 354, 364, 384, 424,444, 2424, 2444 and late B414 tractorsequipped with 61/z-inch brakes, discon-nect brake pedal return springs andremove the brake operating rod pin.Then, on all models, unbolt brakehousing and remove housing, outerbrake disc, actuating assembly andinner brake disc.

Left brake can be removed after dis-connecting brake operating rod andunbolting brake housing from transmis-sion housing.

Fig. 126-View showingbrake adjuster on Series

354, 364 , 384, 424, 444,

2424, 2444 and late B-414

tractors.

Fig. 127-Exploded viewof the 6w-inch disc brakeused on Series 354, 364,384, 424 , 444, 2424, 2444

and late B -414 tractors.

1. Brake housing2. Brake disc5. Actuating disc6, Steel ball7. Disc return spring8. Actuating link9. Tension link

10. Rubber boot12. Washer13. Operating lever pin14. Pivot pin15. Operating lever16. Adjusting nut17. Trunnion block18. Operating rod19. Bushing20. Brake pedal R.H.22. Operating rod pin

All Models182. Tractors are available eitl-"cr

with a transuission drive e . ..constant - running power take-off. Referto paragraphs 187 through 189 for dualspeed constant running pto used onsome Series 354, 364 and 384 tractors.

When tractor is equipped with atransmission driven pto, the outputshaft is driven by a solid transmission

61


Paragraphs 183-186

countershaft. When tractor is equippedwith constant-running pto, the pto driv-ing shaft and transmission countershaftare both hollow. In both cases power isdirected to the output shaft through a

INTERNATIONAL HARVESTERsplined clutch (collar) located in thedifferential section of the transmissionhousing.

Refer to Fig. 128 for an illustrationshowing arrangement of shafts for the

Fig. 128-Illustration showing shaft arrangement when tractor is equipped with single speedconstant- running pro . Refer to Fig . 129 for legend.

10. Retainn gg washer11. Lorkwasher12. Nut13."0" ring14. Bell bearing15. Oil Seal18. Cap (plug)17. Snap ring

Fig. 130-Exploded view of dual speed pto driving shaft, pto countershaft and their compo-nent parts used on some Series 354, 364 and 384 tractors.

1. Snap ring 8. Front seal 15. Clutch body 22. Front bearing2. Snap ring 9. Snap ring 16. Coupling 23. Retaining washer3. Rear bearing 10. Retaining washer 17. Countershaft (pto) 24. Snap ring4. Spacer 11. Countershaft rear brg. 18. Bushing 25. "0" ring5. Driving gear 12. Spacer 19. Snap ring 26. Snap ring6. Driving shaft 13. Driven gear DJ. Driven gear V. Bearing cap7 Front bearing 14. Bushing 21. Snap ring 28. Snap ring

Fig. 129-Exploded viewof pto driving shaft , drivengear and their component

parts.

1. Snap ring2. Snap ring3. Ball bearing4. Driving shaft5. Driven gear8. Snap ring7. Snap ring8. Ball bearing

j7 9. Snap ring

constant-running pto.Occasions for overhauling the com-

plete power take-off will be infrequent.Usually any failed or worn part will beso positioned that localized repairs canbe made as outlined in the followingparagraphs:

183. REAR (OUTPUT) SHAFT. Toremove and/or overhaul the pto rearshaft, first drain transmission housing,then unbolt bearing retainer and shieldand pull shaft from housing. Keep ptoshift lever in engaged position so clutch(collar) will remain on aft end of trans-mission countershaft or front pto shaft.If desired, the clutch can be removedby disengaging snap ring from bearingbore at rear of transmission case, push-ing shift lever forward and takingclutch out through bearing bore.

Overhaul is obvious after an exami-nation of the unit and reference to Fig.107. Oil seal in bearing retainer isinstalled with lip facing front of trac-tor.

NOTE: During reinstallation of rearshaft It may be necessary to removeshifter lever bracket to Insure mating ofclutch shitter with groove of clutch.

184. COUNTERSHAFT OR FRONTPTO SHAFT. On those models equippedwith transmission driven pto, the ptooutput (rear) shaft is driven from aspline on the aft end of a solid trans-mission countershaft. Refer to para-graph 165 for information pertaining tothis shaft.

185. On models equipped with aconstant-running pto, the output shaftis driven by a front mounted shaftwhich runs through a hollow transmis-sion countershaft and is splined to agear which is driven from the hollowpto driving shaft. See Fig. 128.

The front pto shaft can be removedfrom the rear after removing bottomcover from clutch housing, nut or snapring from front of shaft and the ptooutput shaft as outlined in paragraph183.

186. DRIVING SHAFT AND DRIVENGEAR. Due to the fit of bearings intheir bores and on driving shaft(4-Fig. 129) and driven gear (5), plusthe inaccessibility of the front of shaftand gear , it is usually necessary toperform the clutch split as outlined inparagraph 146 or 152 and the transmis-sion split as outlined in paragraph 161.With the clutch housing removed as aunit, remove snap ring (9-Fig. 129)and press driven gear (5) from bearing(8). Remove "0" ring (13) and snap ring( 7) and push bearing from its bore.Remove snap ring (1) and press driv-

ing shaft (4) out rear of clutch housing.

62



Remove snap ring (2) and pull bearing(3) from shaft. Remove oil seal (15) andif bearing (14) has remained in its bore,remove same. Oil seal for aft end ofdriving shaft is contained in thetransmission input shaft bearing re-tainer.

Dual Speed Constant RunningPto

187. Some Series 354, 364 and 384tractors are equipped with a dual speedpto, which is similar to single speedconstant-running pto except that thehollow driving shaft has two gears. See All ModelsFig. 130. These gears are in constantmesh with two gears (13 and 20) thatare free wheeling on the pto counter-shaft (17). The countershaft is splinedto the pto front shaft.

There is a sliding coupling on the ptocountershaft which is operated by alever on the right side of clutch hous-ing. You may lock either of the freewheeling gears to the pto countershaftgiving you either 540 rpm or 1000 rpmoutput shaft speed. Refer to paragraph183 for R&R and overhaul procedureon rear (output) shaft.

188. R&R DRIVING SHAFT ANDCOUNTERSHAFT. To remove the ptocountershaft first perform the clutchsplit as outlined in paragraph 146 or152 and transmission split as outlinedin paragraph 161. With housing re-moved as a unit, remove pto counter-shaft rear bearing snap ring (9-Fig.130), retainer washer (10) and "0" ring(25). Drive the countershaft and frontbearing forward into clutch housingcompartment. Gears and coupling willbe removed as the countershaft isremoved. Remove snap ring (26) andpress bearing (22) from countershaft.Remove bushing (18) from countershaftand snap ring (19) from inside ofcountershaft.

Procedure for removal of drivingshaft is same as for single speed pto

5 6 7 8

^ai^ Ii '? Q-T*

1 2 3 4Fig. 137- Exploded view of the dual speedshifter located on right side of the clutch

housing.

outlined in paragrah 184.

189. R&R DUAL SPEED SHIFTER.To remove the pto dual speed shifter,remove countershaft as outlined inparagraph 188. Loosen pinch bolt andremove operating lever (7-Fig. 131)from shaft. Remove bracket (4), shifter

1. Shifter fork 5. Sleeve2. "0" ring 6. Spring3. Gasket 7. Lever4. Bracket 8. Lever knob

63

Paragraphs 187-190

fork (1) and "0" ring (2). Reinstall byreversing the removal procedure.

NOTE : To adjust the shifter , loosenthe pinch bolt , position shifter in centerlocation hole in clutch housing. Movethe clutch ( 16-Fig . 130) to neutralposition, lighten pinch butt

BELT PULLEY

190. R&R AND OVERHAUL(Clockwise Rotation ). The belt pulleyunit bolts to the rear of the tractorrear frame and is driven by the powertake-off. Removal of the unit from thetractor is obvious.

To disassemble, remove pulley, bear-ing retainer (19-Fig. 132), withdrawpinion shaft (12) and bearings, thenremove spacer (16) from housing.Remove cover ( 1), using two of thebolts in extractor holes , bevel gearassembly and oil seal (8 ) from housing.Any further disassembly required willbe obvious.

To reassemble, position bevel gearretaining bolts in the drive shaft(6-Fig. 132), press inner bearing (7) onthe shaft and install bevel gear (4)

using original shims (5). Measure freeback face of bearing (7) to the frontface of the gear (teeth side). Thedimension should be between 3.554 to3.564 inch for 550 rpm unit or 3.399 to3.409 for 700 rpm unit. Add or removeshims ( 5) as required . Install the driveshaft assembly into the housing. Pressthe outer bearing ( 2) into the cover (1)and install the cover on the drive shaftuntil bearing contacts shoulder on theshaft . Measure the gap between thecover ( 1) and housing ( 9) and selectshims ( 3) to give a total thicknessgreater than the gap. At least one shimwill be required. Remove the driveshaft assembly. Press the oil seal i8;into housing, with the lip facing intoward bearing, until the back face ofthe oil seal is 1.88 inch from the mount-ing flange. Assemble the drive shaft

Fig. 132-Exploded view of the belt pulley unit . Drive is taken from pro shaft . Items 4through 6 are used for clockwise rotation and Items 27 and 28 are used for counter-

clockwise rotation . Items 21 through 25 are used on early models.

1. Cover 8. Oil seal 15. Spacer 22. Gasket2. Bearing 9. Housing 16. Spacer 23. Cover3. Shim 10. Gasket 17. Bearing 24. Shim4. Bevel gear 11. Plate 18. Gasket 25. Snap ring5. Shim 12. Pinion shaft 19. Bearing retainer 26 . Bearing6. Drive shaft 13. Woodruff key 20. Oil seal 27. Drive shaft7. Bearing 14. Bearing 21. Bearing retainer 28. Bevel or


Paragraphs 191-194

into housing take care not to damageoil seal (8). Install cover so that theextraction holes are at 5 and 11 o'clockpositions.Reverse the removal procedure for

the pinion shaft using original spacers.Remove the inspection cover ( 11) andcheck backlash using a dial indicator.Backlash should be 0.005 to 0.007 inch.Add or remove spacers ( 16) to obtaincorrect backlash.

191. R&R AND OVERHAUL(Counter-clockwise Rotation ). To disas-semble, remove pulley, bearing re-tainer (19-Fig. 132), withdraw pinionshaft (12) and bearings, then removespacer (16) from housing. Removecover (1), using two of the bolts in theextractor holes, bevel gear assemblyand oil seal (8). Any further disassem-bly required will be obvious.

To reassemble, press the oil seal (8)with the lip facing inward, toward thebevel gear . Position bevel gear (28) ondrive shaft (27). Press inner and outerbearings on drive shaft, install snapring (25). Press the outer bearing andshaft assembly into the cover (23).Install original shims (24) on cover,then install cover and shaft assemblyinto housing, taking care not to damageoil seal (8). Position cover so that theextraction holes are at 5 and 11 o'clockpositions. Reverse the removal proce-dure for the pinion shaft using originalspacers. Remove the inspection cover(11) and check backlash using a dialindicator. Backlash should be at 0.005to 0.007 inch. Add or remove spacers(16) to obtain correct backlash.

HYDRAULIC LIFTSYSTEM

The hydraulic lift system is com-posed of three basic units : A pressureloaded gear type pump which is drivenfrom the engine timing gear train; acontrol valve mounted on front side ofreservoir and the reservoir which Incor-porates the work cylinder , rockshaft andoperating linkage.

The maintenance of absolute cleanli-ness of all parts is of the utmost impor-tance in the operation and servicing ofthe hydraulic system. Of equal impor-tance is the avoidance of nicks andburrs on any of the working parts.

LUBRICATION AND BLEEDING

All Models192. Capacity of hydraulic reservoir


is 3.0 gallons and III "Hy-Tran" fluid isrecommended. If "Hy-Tran" fluid is notavailable, the following oils may beused. Below 32 degrees F, SAE-10engine oil; 32 degrees F to 80 degreesF, SAE-20 engine oil and above 80degrees, SAE-30 engine oil.

To bleed system, fill reservoir tobottom of filler hole then start engineand cycle system until all air is bledfrom system. Recheck reservoir fluidlevel and add fluid as required.

TROUBLESHOOTING

Series B-275193. The following troubleshooting

chart lists troubles which may beencountered in the operation and ser-vicing of the Series B-275 hydraulic liftsystem. The procedure for correctingmany of the causes of trouble isobvious, however, for those not soobvious, refer to the appropriate sub-sequent paragraphs.

Install a gage capable of registeringat least 2500 psi in the lower plug (15-Fig. 138) hole before starting systemcheck.

Series B -414-424-444-2424-2444-354-364-384

194. The following troubleshootingchart lists troubles which may beencountered in the operation and ser-vicing of - the 424, 444, 2424, 2444,BA14, 354, 364 and 384 hydraulic liftsystem. The procedure for correctingmany of the causes of trouble areobvious, however, for those not soobvious, refer to the appropriate subse-quent paragraphs.

A. System will not lift with eitherdraft or position control.1. System overloaded.2. Faulty relief valve3. Regulator piston stuck open.4. Speed control piston stuck

open.5. Faulty hydraulic pump.

B. System lifts slowly.1. System overloaded.2. Faulty hydraulic pump.3. Suction filter plugged.4. Speed control piston stuck in

slow position.5. Faulty relief valve.6. Low oil level in reservoir.

C. System will not hold load.

A. System unable to lift load. Highgage pressure. Could be causedby:

1. Isolating valve closed.2. System overloaded.3. Linkage restricted.

B. System unable to lift load or loadraises slowly. Gage shows little orno pressure. Could be caused by:1. Suction filter clogged.2. Insufficient fluid in system.3. Faulty pump.4. Main valve not seating.

1. Piston seal leaking.2. Thermal relief valve in piston

leaking (if so equipped).3. Control valve or cylinder "0"

rings leaking.4. Internal parts of control valve

leaking.

NOTE: Tom Isolator valve In and iflift arms stop settling, leak Is In controlvalve . If lift arms continue to settle,leak is in work cylinder.

D. System will lift with one controllever but not the other.

C. Erratic or sluggish operation.Could be caused by:

1. Faulty or maladjusted controllinkage.

1. Insufficient fluid in system. 2. Position control plunger bind-2. Suction filter clogged. ing.

D. System will not hold load in E. System noisy.raised position with control lever 1. Air in system.at neutral. Could be caused by: 2. Suction filter plugged.

1. Incorrect non-return valve tap- 3. Oil level in reservoir low.

pets setting. F. System overheats.

2. Leakage past piston or through 1. Relief valve operating contin-

thermal relief valve. uously.

3. "0" ring on isolating valve 2. High pressure line restricted.

damaged. 3. Air in system.

4. Oil leaking through non-return 4. Operating fluid contaminated.

valve. G. Oil discharges through relief valvewith lift arms fully raised.

E. System will not lower. Could be 1. Regulator piston stuck in closedcaused by: position1. Incorrect non-return valve tap-

pet setting.2. Linkage restricted.

.2. Control lever stop incorrectly

adjusted.3. Orifice or orifice filter plugged.

F. Excessive operating pressure.Could be caused by:1. Faulty or malfunctioning main

valve.

H. Lift arms creep up when oper-ating external cylinder.1. Isolator valve not fully closed.2. Isolator valve leaking.

64



TESTING

Series B-275195. When testing, all connections

and mounting surfaces should be cleanand free of dirt or other foreignmaterial. Remove filler plug and checkfluid level. Fluid should reach bottomof filler hole. Refill if necessary. If fluidis excessively low, check level of oil incrankcase to see if there is leakagefrom pump into crankcase.

Remove lower plug from left end ofcontrol valve and install a gage capableof registering at least 2500 psi. Connectlower links to a weight of at least 1250pounds and measure to see that thelower link ends are approximately 10inches from the ground. Start engine,place control lever in raise position andcheck the time required for the systemto reach full lift. This time should beapproximately 1'/z seconds.

With engine running , control lever inraised position and with load fullyraised, the pressure gage should read2050-2250 psi. A lower reading indi-cates an inefficient pump or a malfunc-tioning pressure relief valve.

With system in raised position, placecontrol lever in "Hold" position and letunit set for about 3 minutes . Duringthis 3 minutes the lower links shouldnot drop more than 1/16-inch whenmeasured at extreme ends. If the1/16-inch drop is exceeded , oil may beleaking past the piston or through thenon-return valve. Close the isolatingvalve and recheck. If lower links con-tinue to fall, oil is leaking past the pis-ton, the non-return valve "O" ring orthe thermal relief valve which is incor-porated into the piston. If the lowerlinks remain stationary, oil is leakingthrough the non-return valve.

Start engine and place control leverin raise position . Allow engine to run atfull throttle for about 3 minutes andcheck all connections and mountingsurfaces for leaks . Return control leverto neutral and stop engine . Recheckreservoir level and crankcase level forevidence of leakage into engine crank-case. Remove pressure gage and rein-stall lower plug in control valve,

Series B-414 -424-444-2424-2444-354-364-384

196. When testing, all connectionsand mounting surfaces should be cleanand free of dirt or other foreign mate-rial. Remove filler plug and check fluidlevel. Fluid should reach bottom ofhole. Refill if necessary. If fluid isexcessively low, check level of oil inengine crankcase to see if there is leak-age of oil from pump into crankcase.

Prior to testing lift system, connectat least 1250 pounds of weight to hitch.

Open isolating valve and set the draftcontrol (outside) lever to the deepest(full forward) position. Place speed con-trol knob in the "Slow" lift position,slowly raise lift with position controllever until the distance between center-line of top pin on hitch lower linkattaching plate and centerline of liftarm pin is 241/2 inches, then move posi-tion control lever stop until it firmlycontacts rear of lever and tighten stopin this position. Check this setting bylowering and raising the lift arms againwith the position control lever. Itshould not be possible to raise the hitchan additional '/z-inch by moving thedraft control lever to the shallowest(rear) position. Return draft controllever to deepest position.

Install a gage capable of registeringat least 3000 psi in the accessory plughole (right hand plug) in the front sideof control valve cylinder head. Now runengine at rated rpm and be sure posi-tion control lever is in full lower (for-ward) position. Close the isolator valve,then move the draft control lever tothe shallowest position and note thegage reading as the relief valve opens.This reading should be 2300-2400 psi.

CAUTION: Do not maintain this testfor more than 20 seconds as damage tohydraulic system could result.

If the observed gage reading is notas specified and the relief valve isoperating, a faulty relief valve indi-cated and relief valve spring should bechecked.

NOTE: Late production relief valvesare shim adjusted . Installing one addi-tional shim behind relief valve springwill Increase relief pressure approxi-mately 50 psi.

If the observed gage reading is notas specified and the pressure reliefvalve is not operating, either the flowcontrol valve spool is stuck in the fullyopened position or the hydraulic pumpis faulty. Before removing gage, makea back pressure test as follows: Placedraft control lever in deepest positionand the position control lever in fulldown position and observe gage whichshould have a zero reading . If conditionis not as stated, check for bent, dam-aged, worn or maladjusted linkage.

Hydraulic system operation can befurther checked as follows: With isola-tor valve open and hitch in fully low-ered position, place speed control knobin "Fast" position and move positioncontrol lever to lift position. Hitchshould raise to full lift in not more thantwo seconds. Move the position controlhandle slowly forward and check to seethat it is possible to control the rate ofdrop so that at least five seconds are

Paragraphs 195-197

required for a full drop. Move thespeed control knob to "Slow" position,move the position control lever to liftposition and check the time requiredfor the hitch to raise to full lift. Thistime should be three to four seconds.

Raise hitch to full lift position andclose the isolator valve. Move the posi-tion control lever to lower position andcheck drop of hitch. The hitch shouldnot drop more than 0 .005 in thirtyseconds. Open isolator valve.

Again place hitch in full lift position,if necessary , then move position controllever to mid-position. Check the hitch,drop which should be not more than0.005 in thirty seconds. Move the postLion control lever to lower position andcheck height of lower link ends abovethe ground. Lower link ends must henot more than five inches from ground.

Secure the position control lever stopabout mid-way of the quadrant, fullyraise hitch , then move position controllever forward until it contacts stop.Measure and record the height of lowerlink ends from ground . Now fully lowerhitch , then raise it until the positioncontrol lever is in the same positionand against the same side of the stopas it was when hitch was lowered.Again measure height of lift link endsfrom ground and if this measurementdiffers more than one inch from thefirst measurement , plunger spring (17-Fig. 143) is faulty and should berenewed.

Series B-275

PUMP

197. R&R AND OVERHAUL. Toremove the hydraulic pump, removethe Allen screws from suction andpressure line manifolds . Remove thecap screws retaining pump to crank-case front cover plate and removepump.

To disassemble the removed pump,straighten tab washer (2-Fig. 133),remove nut ( 1) and using a suitablepuller, or a soft faced hammer, removegear from shaft (14). Remove the eightcap screws and lift cover assembly (7)from pump body (16). At this time,note the location of pressure reliefplate (10)- Prior to removing same,remove "0" ring (8). Remove snap ring(3), oil seal washer (5) and oil seal 16).

NOTE : Bearings ( 12) may stay withcover or may remain in pump body. ineither case they may be withdrawn bymoving one out slightly in advance ofthe other. Be sure not to lose the smalllocking wires.

Drive shaft (14) and driven shaft (13)can now be removed. Disassembly can

65


Paragraphs 198-200A

he completed on pumps as shown inFig. 133 by removing name plate (19),snap rings (18), sealing plugs (17) andbumping out bearings (15). On thosepumps which do not include items (17)and (18), bearings can be removedusing a hooked tool.

With pump disassembled, inspect allparts for burrs, scoring, wear or otherdamage. Bearing faces can be refin-ished providing they are only lightlyscored.

When reassembling, use new driveshaft oil seal and "0" rings. Installbearings as follows: Hold bearing to-gether with flats in engagement andlocking wires in position. Start bear-ings into their bores with one bearingslightly in advance of the other. Pushbearings into bores until first bearingbottoms, rotate bearings in the direc-tion of pump rotation, then presssecond bearing into bore until it bot-toms. Be sure pressure relief plate andrelief plate "0" ring are positioned oninlet side of pump body and prior toinstalling pump cover, place a straight-edge across machined face of pumpbody and measure the distance be-tween straightedge and pressure reliefplate. This distance should not be less


than 0.003 nor more than 0.0055. Vari-ous sized pressure relief plates areavailable to obtain this distance.

Balance of reassembly is obvious.Reinstall pump, then fill and bleedsystem as outlined in paragraph 192.

Series B-414-354-364-384 AndSeries 424-444-2424- 2444 Diesel

198. R&R AND OVERHAUL. Toremove the hydraulic pump, removethe Allen screws from suction andpressure line manifolds . Unbolt pumpfrom engine front cover and removepump.

To disassemble the removed pump,straighten tab washer (1-Fig. 134),remove nut and using a suitable puller,or a soft faced hammer, remove gearfrom shaft (8). Place a scribe lineacross length of pump, remove the fourthrough-bolts and separate pump. The"0" rings (5) and (6) can now beremoved from cover (12) and flange (4).Bearings (7) and the drive and drivengears and shafts (8 and 9) can now beremoved from pump body (11) bygently bumping ends of shafts.

NOTE : When removing the bearing

Fig. 133-Exploded viewof the Series B-275 enginedriven hydraulic pump.Some pumps do not In.clude Items (17) and (18).

1. Nut2. Lockwasher3. Snap ring4. Woodruff key5. Seal washer6. Oil seal7. Pump cover

10. Pressure relief plateIi. rings12. Bearings13. Driven gear14. Drive gear15. Bearings16. Pump body17. Sealing plugs19. Snap rings19. Name plate

Fig. 134-Exploded viewof hydraulic pump used onSeries 8-414, 354, 364 and384 tractors not equippedwith power steering andSeries 424, 444, 2424 and

2444 diesel tractors.

1. l.ockwasher2. Snap ring3. Oil seal4. Pump flange

7. Bearing8. Drive gear & shaft9. Driven gear & shaft10. Dowel11. Pump body12. End rover

assemblies (7) be sure to note whichside the cut -outs in bearings are posi-tioned and be sure bearings are in thesame position when reinstalling. Thesmallest cut -out must be on the pres-sure side of the pump.

With pump disassembled, inspect allparts for burrs, scoring, wear or otherdamage. Bearing faces can be refin-ished providing they are only slightlyscored. Use all new "0" rings and driveshaft oil seal when reassembling.

Reassemble by reversing the disas-sembly procedure and be sure to alignthe previously affixed scribe line. Referto Fig. 135 and note how "0" rings areinstalled in pump cover. "0" rings inpump mounting flange are installed in asimilar manner. Reinstall pump, thenfill and bleed the hydraulic system asoutlined in paragraph 192.

199. Series 354, 364, 384 and lateSeries B-414 tractors, serial number21196 and later, equipped with powersteering, use the dual pump shown inFig. 136. The removal and disassemblyof this pump is similar to the procedureoutlined in paragraph 198 for the singlepump.


200. R&R AND OVERHAUL. Toremove the hydraulic pump, drain thehydraulic system and remove the twobolts securing the manifold flange topump. Unbolt pump from engine crank-case and remove pump.

200A. To disassemble the Cessnapump, first remove nut, drive gear andkey from pump shaft. Place a scribeline across length of pump to assureproper reassembly. Remove the tworemaining cap screws, then bump pumpshaft against a wood block to separatefront plate (9-Fig. 137) from rearhousing (1). Withdraw gear and shaftassemblies (3 and 12) and thrust plate(2) from rear housing. Using a sharptool, pry diaphragm (4) from diaphragmseal (7). Identify the check ball holeand remove spring (11) and check ball(10). Lift nylatron gasket (5), protectorgasket (6) and diaphragm seal (7) fromfront plate (9). Remove pump shaft oilseal (8).

Fig. 135-Hydraulic pump cover allowinginstallation of "0" rings. Pump flange will be

similar.

66


y


Check all parts for burrs , scoring,wear or other damage.

4.5 GPM PumpO.D. of shafts atbushings. ........ 0.5605 min.

I.D. of bushings in bodyand cover ........... ..0,5655 max.

Gear width ................0.376 min.I.D. of gear pocket in body. .1.404 max.

9 GPM PumpO.D. of shafts at

bushings ................ 0.5605 min.I.D. of bushings in bodyand cover .............. 0.5655 max.

Gear width ................ 0.748 min.I.D. of gear pocket in

body .................... 1.404 max.

When reassembling, use new dia-phragm, nylatron gasket, protectorgasket, diaphragm seal, thrust plateand shaft oil seal. These parts areavailable as a service package (IH partnumber 381002R92). With open part ofdiaphragm seal (7) towards front plate(9), work same into grooves of frontplate using a dull tool. Press the pro-tector gasket (6) and nylatron gasket(5) into the relief in the diaphragmseal. Install check ball ( 10) and spring(11) in front plate, then install dia-phragm (4) with bronze face towardgears. Entire diaphragm must fit insideraised rim of diaphragm seal. Dip gearand shaft assemblies in oil and installthem in front plate. Position thrustplate (2) in rear housing (1) with thebronze side toward gears and the halfmoon cut-out on inlet side of pump.Install rear housing over pump gears,then install cap screws. Lubricate theshaft seal (8) and carefully work sealover drive gear shaft. Seat the shaftseal by tapping with a plastic hammer.Check the pump rotation. Pump shouldhave a slight amount of drag butshould rotate evenly.

After reinstalling the pump drivegear, reinstall pump on tractor, thenfill and bleed the hydraulic system asoutlined in paragraph 192.

200B. To disassemble the Thompsonpump, first remove the nut, drive gearand key from pump shaft. Place ascribe line across length of pump toassure proper reassembly. Remove thetwo remaining cap screws , then bumpthe pump shaft against a wood block toseparate front cover from pump body.Remove gears and shafts , bearings andbearing spring plate, identifying allparts so they can be reassembled in thesame position. Any further disassemblywill be evident after examination ofunit. Small nicks and/or scratches canbe removed from body, cover, shafts,gears and bearings by using crocuscloth or a fine oil stone.

Check pump for excessive wear usingthe following specifications:

9 GPM PumpO.D. of shafts at

bearings ................. 0.624 min.I.D. of bearing bore .......0.632 max.I.D. of gear pocket in

body .................... 2.651 max.Gear width ................ 0.599 min.

When reassembling, lubricate allparts with clean Hy-Tran fluid, or itsequivalent, and renew all seals and "0"rings. A hydraulic pump "0" ring andgasket package (IH part number368634892) is available for this pump.

Reinstall pump on tractor, then filland bleed the hydraulic system as out-lined in paragraph 192.

CONTROL VALVE

Series B-275

201. R&R AND OVERHAUL. Toremove the control valve, drain thehydraulic system reservoir, then re-move the quadrant strip. Disconnect

Fig. 136-Exploded viewof dual hydraulic pumpused on late Series 8.414,354, 364 and 384 tractorsequipped with power steer-

Ing.

1. Net2. Lock3. Snap ring4. Oil seal6. Pump flange7. "0" ring8. "0" ring9. Bearing

10. Key11. Drive gear12. Driven gear13. Dowel pin18. Center plate19. Bearing20. Coupling21. Drive gear22. Driven gear23. Dowel pin24. Rear body25. Rear cover26. Front body

Fig. 137-Exploded viewof the Cessna hydraulicpump used on Series 424,444, 2424 and 2444 non-

diesel tractors.

1. Rear housing2. Thrust plate3. Drive gear4. Diaphragm5. Nylatron gasket6. Protector gasket7. Diaphragm ..it8. Oil seal9. Front plate

10. Steel ball11. Spring12. Idler gear

Paragraphs 2008-201

pressure line, and if so equipped, theremote control line, from the controlvalve. Unbolt and remove controlvalve. If necessary , use a screwdriverto separate control valve from lift cylin-der as it is being removed.

Disassemble the removt-d 101,111'valve as follows: Refer to Iig. IJhremove cap screws from isolating valve(4) stop plate and unscrew isolatingvalve. Remove plug ( 6) or remote con-trol line coupling , if so equipped.Remove plug (20), washer ( 19), spring(18) and dashpot piston (17). Remove

plugs ( 15 and 31 ) and their washers.'Loosen jam nut (35 ) on intercouplelever adjusting screw (34) and removeadjusting screw from intercouple lever.Place control lever in lift position sothat intercouple lever is clear of nonreturn valve (10). Place a screwdriverthrough non-return valve hole, liftintercouple lever and at the same tiuu-place control lever in lower position.This will withdraw relief valve 1271from intercouple lever and allow inter-couple lever to be removed. Removethe intercouple lever spring 1131 then

67


Paragraphs 202-204

unscrew the non return valve seat (12),valve ( 10), washer ( 11), spring (9) andstop plate (8). Remove end cover (21)and gasket (22), then remove pin (2)and withdraw control lever ( 1) fromram (23).

CAUTION: During the removal anddisassembly of the relief valve assem-bly, care must be exercised to preventbodily injury. Should the spring stirrup(25) spread open and release the reliefvalve , the valve will fly out withconsiderable force due to the spring

INTERNATIONAL HARVESTERcompression . DO NOT stand in linewith relief valve assembly when workingon same.

Pull relief valve assembly out ofhousing far enough to remove cam (23)from cam stirrup (24), - then eitherinstall a 1'/ in. I.D. safety collar overspring stirrup (25) or wrap same withwire to insure against spring stirrupspreading and allowing relief valve tofly. Now pull relief valve assemblyfrom housing.

Do not disassemble the relief valve

Fig. 138-Exploded view of the B-275 series hydraulic control valve . A remote couplingattachment may be installed instead of plug (6).

1. Control lever & shaft 10. Nonreturn valve2 Pin 11. Copper washer

4. Isolating valve0" rng

6 Plugwerher

aloe sir,'p Spring

12. Va ve seat13. Spring14. Washer15. Plug16. Snap ringl7. qashpot piston18. Spring

19. Washer20. Housing plug21. End coverM. Gasket23. Cam24. Cam strirrup25. Spring stirrup26, Relief valve spring27. Relief valve

28. Valve seat29. Copper washer90. valve body31. Plug32. Washer33. lntercouple lever34, socket it screw35. Jam nut36- Rall end

as

Va

Me

a-

Oe

'a

p.TNA. HOLEFig. 139-View showingdimensions of special toolused to remove relief valveseat of the control valve

shown in Fig. 138.

assembly unless necessary. However,should it prove to be necessary,proceed as follows: Support closed endof spring stirrup in a press, place ahollow mandrel or a piece of pipe overstem of relief valve and take up slack.Slide safety collar up over mandrel, orloosen wire wrapping, then depressspring and spread stirrup. Slowlyrelease pressure and separate reliefvalve assembly.

Use a tool similar to that shown inFig. 139 and remove relief valve seat(28-Fig. 138) and washer (29).

202. Thoroughly clean all parts andinspect valves and seats for scoring,pitting or undue wear. Inspect allsprings for rust, distortion or fractures.Inspect all other parts for undue wearor damage. Relief valve spring can bechecked against the following specifi-cations.

Free length .................. 3-7/8 in.Test length ...................23/4 in.Test load at 23/4 in......... 231-245 lbs.

Approximate free lengths of theremaining springs shown in Fig. 138are as follows: Intercouple lever spring(13), 7/8-inch; non-return valve spring(9), 11/16-inch; dashpot spring (18),13/16-inch.

203. Reassemble by reversing thedisassembly procedure, however, keepthe following points in mind: If newvalves and/or seats are being installedthe mating faces should be lightlylapped to insure against leakage. Re-new seat washers (11 and 29-Fig. 138)and all "0" rings. Cam (23) is installedwith "V" cut-out toward outside ofhousing as shown in Fig. 140.

With unit assembled and prior toinstalling plug (15-Fig. 138), adjustintercouple lever adjusting screw (34) aas follows: Place control lever in neu-tral position, turn adjusting screw inuntil it just touches the non-returnvalve, then back-off screw 1/3-turn andtighten jam nut (35). Install plug (15).

204. Reinstall control valve to reser-

Fig. 140-When Installing cam in cam stir-rup, position "V" cutout as shown.

68


INTERNATIONAL HARVESTERvoir, then fill and bleed system as out- remove the control valve, either re-lined in paragraph 192. move the complete hydraulic housing

CONTROL VALVECYLINDER HEAD

Series B -414-424-444-2424-2444-354-364-384

205, ft&R AND OVERHAUL. Toremove the control valve cylinder head,either remove the complete hydraulichousing as outlined in paragraph 209,or drain housing, remove retaining capscrews, then raise front of housing farenough for control valve cylinder head.to clear transmission top cover andsupport in this position with woodblocks. Remove the cap screws whichretain the cylinder head and controlvalve to lift housing and separate cylin-der head from control valve. Catchspacer (9-Fig. 143) and spring (10) asthe units are separated.

With cylinder head removed, refer toFig. 141 and proceed as follows:Remove adapter pressure line (cou-pling) and spacer (14). Remove snapring 128) and pull plug (25) and "0"ring (26), speed control piston spring122) and speed control piston (21) frombore. Unscrew latch (29) and removespeed control spool assembly (items 23,24, 27, 29 and 30). Remove plug (3) andwasher (4), then remove orifice andscreen (5) and "0" ring (6).

NOTE: Orifice and screen assemblywill generally remain in its position Inthe control valve flange.

Remove cap screws from isolatingvalve stop plate (8), then unscrew andremove isolating valve assembly (items7 through 13). Auxiliary plug (1) neednot to be removed unless cleaning isindicated. Any further disassemblyrequired will be obvious, however, besure to note and identify "0" rings (17,18, 19 and 20) and their locations.

Inspect all parts for burrs, scoring,wear or other damage. Speed controlpiston should be a snug fit in its boreyet slide freely. Speed control pistonspring should have a free length of 2.51inches and should test 10 lbs. whencompressed to a length of 1.625 inches.

Use all new "0" rings and reassem-ble by reversing the disassembly proce-dure. Reinstall cylinder head to controlvalve and hydraulic lift housing to rearframe, then fill and bleed the hydraulicsystem as outlined in paragraph 192.

CONTROL VALVE

Series B-414-424-444-2424-2444-354-364-384

206. R&R AND OVERHAUL. To

as outlined in paragraph 209 or drainhousing, remove hydraulic housing re-taining cap screws, then raise front of

Fig. 141-Explodedof hydraulic control

cylinder head.

1. Plug2. Seal washer3. Plug4. Seal washer5. Or fire assembly6. ring7. Knob8. Stop plate9. Shaft

10. "0" ring11. "0" ring12. Bushing13. Isolator valve14. Spool (spacer)15. Cylinder heed16. Plug17. "0" ring18. "0" ring19. "0" ring20. "0" ring

viewvalve

21. Speed control piston22. Piston spring23. "0" ring24. Speed control spool25. Plug26. "0" ring27. Seal washer28. Snap ring20.. Knoobl latch

Fig. 142-Control valveassembly and draft plun.ger linkage after removalfrom hydraulic lift hous-

ing.

Paragraphs 205-206

housing and support with a wood block.Remove auxiliary valve cover platefrom left front of lift housing and pullthe return tube. Tube is internallythreaded and a cap screw can be used

69


Paragraph 207

to assist in pulling tube. Disconnect

valve operating link from draft controlshaft crankshaft. Disconnect draft linkplunger return spring and on models so

equipped, disconnect draft control spoolsafety chain. Remove the retaining capscrews and pull control valve, cylinder

head and cylinder assembly from hous-ing. See Fig. 142. Remove the valveoperating link, radius arm and thedraft link plunger assembly from con-trol valve. Remove the two small capscrews and separate cylinder head fromcontrol valve which will release spacer19--Fig. 143) and spring (10). Removespring seat and lowering spool (11)from control valve flange (body). Re-move plunger (19) and plunger spring(17). Remove the internal snap ring(25) and draft spool (24).

NOTE: To remove snap ring (25), dis-engage and work ends into bore whichwill cause snap ring to extend aboveend of bore where It can be grasped.

Remove snap ring (35) and withdrawplug (33) and "0" ring (34). Withdrawpiston (31) and "0" ring (32). Use Inter-national Harvester tool FES 10-28, orits equivalent, and remove valve seat(29) and "0" ring (30). Remove flowcontrol ball (28), ball rider (27) andspring (26). Unscrew relief valve springhousing (46) and remove relief valvespring (45), ball rider (44) and reliefvalve ball (43). Remove relief valve ballseat (41) and "0" ring (42), spacer (39),spring (40), non-return ball (38), ballseat (37) and copper washer (36).

At this point, sleeve (12), gland (14),sleeve (18), plug (22) and sleeve (23)are still in the valve body bores. Theycan be pressed from the bores if neces-sary. Sleeve (18) is shouldered andmust be removed toward front of valvebody. Be sure to renew all "0" rings ifthese parts are removed.

Cylinder (2) can be pressed fromflange of valve body, if necessary. AnInternational Harvester crankshaft rearoil seal driver (FES 6-15) or a piece ofpipe of proper diameter can be used forthis operation, however, take care notto damage the machined surface ofvalve body flange.

Clean all parts in a suitable solventand blow out all oil passages. Use com-pressed air to dry parts. DO NOT userags as lint could clog filters or lodgebetween valves and seats causing themto malfunction.

Inspect all parts for nicks, burrs orscoring. Nicks and burrs may bedressed with a fine stone, however, ifany dressing is done, be extremelycareful not to remove any of the sharpedges of spools or valve seats. Noadjustments are available for thisvalve. Renew any parts which are theleast bit doubtful and refer to the

following table for the spring specifica-tions.

Lubricate parts prior to assembly,then reassemble and reinstall controlvalve by reversing the disassembly andremoval procedures . Reinstall hydrauliclift housing, then fill and bleed hydrau-lic system as outlined in paragraph 192.

RESERVOIR ANDCOMPONENTS

Series B-275The hydraulic lift system reservoir is

fitted over the differential portion ofthe transmission case (rear frame) and

SpringCall-outFig. 143

Position plunger 17Flow control 26Non-return valve 40Position spool (B-414) 10Position spool (all

other models) 10Relief valve 45


forms the top cover of that portion.Incorporated within the reservoir arethe rockshaft assembly, work cylinderand piston, a spring loaded depth con-trol, a by-pass filter and a suctionfilter . In addition , the hydraulic controlvalve is bolted to the left front face ofthe reservoir directly over the workcylinder . See Fig . 144 for an explodedview of reservoir and rockshaft assem-bly.

207. REMOVE AND REINSTALL.To remove the hydraulic reservoir unit,proceed as follows: Drain reservoir bydisconnecting suction line hose, Discon-nect quadrant strip from control lever

Free TestLength Lbs. at In.1.038 7-9 at 3/41.439 15.8-17.5 at 1-1/32

1-1/8 to 144 4.74 at 5/82-5/32 24-29.4 at 1-3/16

2.53 37 at 22.88 85 .5-94.5 at 2.568

1213 \11918 /31sn 11 \' 13 1134

14

2011

16 1

9...

^

Jc^-,4ye^iJ324 4

1!lIIli 31 -4546

30 44^Z2 ^(2 2 y^. 4243

4021 26 i' 39

3637

Fig. 143-Exploded view of the 9-414 , 354, 364, 384, 424 , 444, 2424 or 2444 series hydrauliclift system control valve . Spacer (9) used on early Series 6-414 units.

i. v ring m. u ring2. Cylinder 14. Spool gland3. 0" ring 15. Plug4. Valve body 16. "0" ring5. Pipe plug 17 . Spring6. Pipe plug is . Sleeve7. Pipe plug 19 . Plunger8. "0' as 20. Gasket9. spacer 21. "0" ring10. Spring 22. Plug11. Lowering spool 23. Sleeve12. Sleeve 24. Draft spool

25. seep ring26. Sprung27. Ball ruder28. Flow control valve

ball29. Seat

31. Piston32. "0" ring33. Plug34. ring35. Snap ring

36. Copper washer37. SeatW. Nor return valve ball39. Sleeve40. Spring41. Seat42. "0" ringQ. Relief valve bell44. Ball rider45. Relief valve spring46. Spring housing

70



quadrant. Disconnect pressure line andif so equipped, the remote line cou-pling, from control valve. Unbolt andremove control valve and if necessary,use a screwdriver to separate controlvalve from work cylinder. Removeseat. Disconnect lift linkage from rock-shaft arms and reservoir, then unboltand remove the reservoir and rockshaftunit.

208. OVERHAUL. To disassembleand/or overhaul the reservoir and rock-shaft unit after it has been removed asoutlined in paragraph 207, proceed asfollows: Unbolt and remove controllever quadrant, then pull suction filterand attached pipe from housing. Use acap screw, if necessary, and pull theby-pass filter from housing, then re-move piston (27-Fig. 144) from cylin-der (19). Remove cylinder from hous-ing. Unbolt depth control support (38)from housing, turn unit until key onspring housing aligns with slot inhousing, then remove unit. Remove capscrews and retainers (15), then removelift arms (9) from rockshaft (6). Turnunit over so cover plate (2) is on topside, then remove cover plate andgasket. Pull cotter pin from connectingrod pin (4) and remove pin and connec-ting rod (17). Remove clamping boltsfrom depth control cam (5) and rockerarm (3), then using a lead hammer,drive rockshaft from housing.

unit by reversing disassembly proce-dure, reinstall on tractor, then fill andbleed system as outlined in paragraph192.

Series B -414-424-444-2424-2444-354-364-384

The hydraulic reservoir (Fig. 145) isfitted over the differential portion ofthe transmission case (rear frame) andforms the top cover of that portion.

NOTE : During removal of the rock-shaft, the oil seal (14), washer (12) and

in most cases , bushing ( 11) will be

pushed out as rockshaft emerges. Oilseal, washer and bushing can beremoved from opposite side after rock-shaft is out.

Any further disassembly requiredwill be evident upon examination of theunits. If thermal relief valve is re-moved from piston, be extremelycareful not to lose the small steel ball(30). Free length of spring (28) is 11/16-inch and spring should test 12.4 Ibs.when compressed to a length of '/s-inch.

Clean all parts and examine for anyundue wear or damage. It is alwaysgood policy to renew bushings (11)when housing is stripped as thesebushings receive the greatest amountof wear and are the least accessible.

When reassembling the reservoir androckshaft assembly, use all new "O"rings, gaskets and oil seals. The onlyseal that should be considered for reuseis the piston seal (13) and then only ifit shows no signs of wear or damage.To install oil seals (14) use special toolprovided by International Harvester, ora piece of shim stock and be sure sealsfit over major diameter of rockshaft.

Reassemble reservoir and rockshaft

Paragraphs 208-209

Incorporated within the reservoir arethe rockshaft assembly, work cylinderand piston, the control valve assembly,the position and draft control operatingand sensing linkage and a suction filter.See Fig. 146 for a view of the positionand draft control operating and sensinglinkage.

209. REMOVE AND REINSTALL.To remove the rockshaft and reservoir

Fig. 144-Exploded view of the Series B-275 reservoir, rockshaft and their component parts.Items 28 through 32 comprise the thermal relief valve.

1. Gasket 11. Bushing 20. Bolt 30. Bell2. Cover plate 12. Washer 21. Washer 31. Hug3. Rocker arm4. Pin

13. Piston seal14. Oil seal

22. Spring23 . Spring seat

32. 0':1'd. rotn'.n.eu

5. Depth control cam 15. Retainer 24. nv-pass filter J4. rang

6. Rockshaft 16. Housing 25. 0" ringcrc

36. Seal x

7. Pin 17. Connecting rod 26. Filter body 37. Seal ringS. Cotter pin 18. Depth control spring 27 . Piston G uppot37.9. Lift arm assembly 28 . Spring

s38. o

w10. Filar plug 19. Cylinder 29. Bell ruder heel39. Hand

Fig. 145-Typical hydrau-lic lift reservoir used onSeries 8-414 , 354, 364,384, 424, 444, 2424 and2444. Refer to Fig. 146 forcontrol linkage and Fig.148 for the rockshaft as-

sembly.

Suction filterConnectorsealing washer"0" r ingLift housing(reservoir)Gasketlop coverFiller & level plugO" ring

Return tubeGasketAuxiliary valve .,orGasketBottom coverGasketFilter retainerControl valveassembly

71


Paragraphs 210-212

(lift unit) assembly, first drain reser-voir by removing drain plug at rightrear of housing, or by loosening clampsof suction line coupling hose and slidinghose forward on suction line. Discon-nect pressure line, and if so equipped,the remote cylinder line from thecontrol valve cylinder head. Disconnectlift links from rockshaft lift arms andthe upper link from draft controlbellcrank. Remove seat . Remove reser-voir retaining cap screws , attach hoistto unit and lift same from rear frame.

When placing unit on work bench, besure draft spring assembly is beyondedge of bench, or support unit withblocks. e

210. OVERHAUL. Overhaul of allcontrol and sensing linkage except thedraft control spindle and spring assem-hl y ran be accomplished without remov-ing the hydraulic lift unit from tractor.

Tn remove the rockshaft and/orrockshaft bushings, rocker arm or rock-shaft cam, refer to paragraph 213.

For information relating to controlcalve cylinder head. refer to paragraph20? and for control valve, refer to para-graph 206.

211. QUADRANT, LEVERS ANDSHAFTS. The quadrant, control leversand control lever shafts can be removedand serviced as follows: Drain reser-voir and remove seat. Remove housingtop cover. Disconnect position controllink (21-Fig. 146) from position controlsleeve (16), then unbolt quadrantbracket from housing and pull quadrantand control levers and shafts fromhousing.

TO disassemble unit, remove quad-rant strip from quadrant and nut fromouter end of draft control shaft.Remove levers (3 and 7), friction discs(4 and 6) and locating washer (5). Ifnecessary, remove quadrant from brac-ket. Remove snap ring (8) from outerend of position control sleeve, pull shaftassembly from bracket, then remove"0" ring (12) from inner bore ofbracket. Use a press, or a valve springcompresser, and pressing on end ofdraft control shaft (27), compressspring (22) enough to allow removal ofsnap ring (23). Carefully release pres-sure and pull draft control shaft fromposition control sleeve.

The position control tube (19) can beremoved from housing after removal ofthe cross tube pivots (17).Any further disassembly required

will be obvious. Renew any damaged,

worn or bent parts.

Use new "0" rings and gaskets andreassemble by reversing the disassem-bly procedure. Be sure to mate the cor-relation marks of control levers and


shafts when installing levers on shaftsand enter pin on draft control crank-shaft in its hole in the draft link (29)when installing quadrant assembly.

212. DRAFT CONTROL LINKAGE.To completely service the draft controllinkage will require removal of liftunit as outlined in paragraph 209.

Remove lock plate (31-Fig. 146),then pull pivot pin (32 ) and removebellcrank (33). Remove locknut fromtop of trunnion ( 34), then unscrewspindle (41) from trunnion . All springsand spring seats are now free . Removethe spindle oil seal from bore in bottomof housing.

Inspect all parts for damage orundue wear and renew as necessary.Spring and pivot pin specifications areas follows: Upper draft control springhas a free length of 2.170 inches andshould test 1000 lbs. at 1. 937 inches.Lower draft control spring has a freelength of 5-3/16 inches and should test3100-3500 lbs. when compressed to alength of 4-11/16 inches. Pivot pin (32)has a diameter of 0.996-1.000 and pivotpin hole in bellcrank has an insidediameter of 1.002 - 1.005 which gives thepivot pin a normal operating clearanceof 0.002 -0.009.

Reinstall and adjust the draft control

spring assembly as follows: Install newoil seal in spindle bore in bottom ofhousing. Place spring seat (39), spring(35) and trunnion (34) in their positionon housing, then insert spindle (41) andscrew it into trunnion until shoulder onspindle contacts spring seat (39) and allslack is taken out of assembly but DONOT compress the spring. Install andtighten locknut. Install top spring seat(42), spring (43), bottom spring seatand retaining nut. Tighten nut until allslack is taken out of assembly but DONOT compress spring. Install cotterpin.

NOTE : It Is Important that all slackbe removed from spring assemblies butthe springs must not be compressed.

Mate slots of bellcrank and pins oftrunnion and install bellcrank pivot pinand lock plate.

With unit assembled as outlined,place draft control lever in its deepestposition and measure distance betweenend of draft link plunger (38) and oper-ating pad of bellcrank. This distanceshould be 3/8 to 13/32-inch as shownin Fig. 147. If measurement is not asstated, bring to correct dimension byadding flat washers as shown.

Reinstall lift unit on tractor byreversing the removal procedure.

Fig. 146-Exploded view of control levers , quadrant and the draft and position controllinkage.

1. st nuty2. Slide 13. Bracket 23. Snap ring 33. Bellcran),3. Draft control lever 14. Gasket 24. Position control link M. Trunnion4. Friction disc 15. "0" ring 25. Radius arm 35. Spring5. Friction plate 16. Position control 26. Pivot pin 36. Oil sea]6. Friction disc sleeve 27, Draft control 37. '0" ring7. Position control lever 17. Cross tube pivot crankshaft 38. Plunger8. Snap ring 18. Seal washer 28. Draft link 39. Spring seat9. Lever stop 19. Cross tube 29. Operating link 40. Od seal10. unit (stop) 20. Tab washer 30. Return spring 41. Spindle11. Quadrant 21. Connecting link 31. Lock plate 42. Spring seat12. 0" ring 22. Spring 32. Belicrank pivot pin 43. Spring ( draft)

72



213. ROCKSHAFT. To remove therockshaft (6-Fig. 148), remove the liftunit as outlined in paragraph 209.Remove both lift arms from rockshaft.Turn unit bottom side up, removehousing bottom cover and disconnectdraft plunger link return spring. Onmodels so equipped, disconnect draftcontrol spool safety chain. Remove theconnecting rod. Remove lock bolt fromrocker arm, then bump rockshaft fromleft to right and remove rockshaft fromright side of housing. Rocker arm (7)and rocker cam (8) can be lifted fromhousing.

NOTE: Rockshaft right hand bushing,washer and oil seal will come out withrockshaft and left hand bushing and oilseal assembly can be driven out afterrockshaft is out.

Inspect all parts for damage andundue wear. Renew parts as necessary.Rockshaft and rockshaft bushings speci-fications are as follows: Rockshaftbushing journal diameter, 2.248-2.250.Rockshaft bushings inside diameter,2.251-2.253. This provides a normaloperating clearance of 0.001-0.005 for

7

12 i t

to, '9

Fig. 147-After assembly, draft controlspring and spindle must be adjusted as

shown.

the rockshaft.If necessary, the connecting rod

bushing (9), located in the rocker arm,can be renewed at this time.

When reassembling, coat parts withoil, start rockshaft into housing atright side and align master spline ofrockshaft with master splines of rockerarm and rocker cam. Rocker cam mustbe installed with chamfered bore sidenext to rocker arm. Install bushingsand oil seals after rockshaft is posi-tioned and use a seal driver wheninstalling seals to insure against sealdamage.

Reinstall unit on tractor by reversingthe removal procedure. Fill and bleedhydraulic system as outlined in para-graph 192.

214. WORK CYLINDER AND PIS-TON. To service the work cylinder andpiston, remove the control valve as outlined in paragraph 206. With controlvalve out, remove valve cylinder headand bump piston from cylinder head.On Series B-414 and early Series 424and 2424, remove snap ring, sealretainer and seal from piston. On lateSeries 424 and 2424 and all Series 354,364, 384, 444 and 2444, an "0" ring(12-Fig. 148) and a back-up ring (13)are used for the piston seal.

NOTE: On all tractors except SeriesB-414 having serial numbers 727 to 2160(non-diesel ) and 8106 to 16650 (diesel),a thermal relief valve assembly wasincorporated in the work piston.

Removal of the relief valve assemblyis obvious, however, be extremelycareful not to lose the small 3/32-inchsteel ball. Free length of relief valvespring is 11/16-inch and spring shouldtest 12.4 lbs. when compressed to alength of '/r-inch.

Fig. 148-View of rock-shaft and componentsused on Series 8-414, 354,364, 384 , 424, 444, 2424and 2444 lift unit. Items 14through 18 comprise the

thermal relief valve.

1. Retaining plate2. Lift arm3. washer4. Oil seal5. Bushing6. Rockshaft7. Rocker arm8. can9. Bushing10. Connecting rodi1. Piston12 0". ring13. Back-up ring14. "0" ring15. Relief plug16. Steel ball17. Ball rider18. Spring

Paragraphs 213-215

The cylinder can be pressed fromflange of control valve, if necessary, byplacing rear of cylinder on a block andusing an International Harvester crackshaft rear oil seal driver IFES 6ora piece of pipe of proper diameter, positinned on valve flange over cylinderbore. Use caution during this operationnot to mar the machined surface of thevalve flange . Cylinder inside diameteris 3.000 -3.006 for new cylinder.

REMOTE CONTROL VALVE

Series B-275-B-414The Series B-275 and B-414 tractors

have available a double acting remotecontrol valve which mounts on thescuttle panel (lower instrument panel)and provides hydraulic control (ortrailed implements.

215. R&R AND OVERHAUL. Re-moval of the remote control valve isobvious.

To overhaul the removed valve, referto Fig. 149 and proceed as Cohows:Disconnect and remove link i12) fromvalve spool and lever, then removelever pivot pin and separate lever fromvalve housing . Remove cap (1), snapring (2) and stop disc (3). Pull spool andcentering spring assembly from valvebody. Remove screw (3A) and lockwasher , stop collar (4), centering spring(5) and stop washer (6) from end ofvalve spool , then remove spool seals (7)from spool bore . Unscrew relief valvebody ( 15) and remove body, relief valvespring ( 18), spring guide (19) and ball(20) from valve body. DO NOT loseshims (17) which are located betweenouter end of relief valve spring andbottom of spring bore in relief valvebody. Unscrew relief valve seat (21)and remove seat, "0" ring (22) and

73


Paragraph 216

10

14

Fig


49-Exploded view of the remote control valve which can be mounted on the scuttleplate (lower instrument panel ) on Series B-275 and early Series 8-414 tractors.

poppet (23). Unscrew plug (25) andremove plug, "O" ring (24) and poppet!23). Any further disassembly is ob-vious.

Wash all parts in a suitable solventand inspect. Renew parts as necessary.Spool (14) and valve body (11) areavailable only as a matched set.

Relief valve spring should have a

free length of 2.135 inches and shouldtest 225-275 lbs. when compressed to alength of 13/4 inches.

Lubricate parts and reassemble byreversing disassembly procedure. Reliefvalve pressure of 2050-2250 psi forSeries B-275 or 2200-2400 psi for SeriesB-414 is adjusted by varying the num-ber of shims (17). Relief pressure canbe checked by installing a pressuregage in one of the break-away cou-plings and directing oil to the gage bythe control valve.

Series 424-444-2424-2444-B-414-354-364-384

216. R&R AND OVERHAUL. Re-moval of the auxiliary valve is obvious.

To overhaul the removed double orsingle acting control valves , refer toFig. 150 and 151 and proceed as

1. Oil seal 12. Steel ball13. Ball rider

3. Valve spool 14. Relief valve spring4. Steel ball 16 . 110" ring5. Ball rider 16. Relief valve housing6. Spring 17. Washer7. "8" ring 18. Spring at8. Spool end 19. Spring at9. Roll pin 20. Return spring

9A. Roll pin 21 . "0' ring10. Spring seat M. Valve body11. Relief valve out 23. Plug

i

22

s

0\Cl\.J

2

19kf

21 20

-O 18

17

23

Fig. 150-Exploded view of the doubleacting auxiliary control Valve used on Series354, 364, 384, 424, 444, 2424, 2444 and late

Series 8 -414 tractors.

1. Bonnet cap2. Snap (stop) ring3. End asp4. Collar stop5. Centering spring8. Stop washer7. Spool seal8. Seal9. Gasket10. SleeveI. Valve body

12. Connecting link

14. Valve spool15. Relief valve body16. Gasket17. Shim18. Spring19. Spring guide20. Check ball21. Relief valve seal a22. "0" ring23. Poppet24. "0' ring25. Plug

follows: Remove plug (23), then using avalve spring compressor, compresscentering spring (20) and drive out rollpin (9A). Remove centering spring andspring seats then withdraw spoolassembly from top of valve body. Driveout roll pin (9) and remove ball (4),rider (5), spring (6), spring seat (10) ondouble acting valves only (Fig. 150),and spool end ( 8) from spool (3).Unscrew relief valve housing (16) andremove relief valve spring (14), rider(13), ball ( 12) and seat (11). Using ascrewdriver , pry out seal (1).

Clean and inspect all parts for exces-sive wear, scoring or scratches. If spool(3) or bore in valve body showsevidence of scoring or excessive wear,both parts must be renewed as they

5 a "

16

144i a, I to

L120 ^-"2122 0 "^9A

23---'o

Fig. 151-Exploded view of the single actingIndependent auxiliary valve used on Series

384.

1. Oil seal 2. Ball13. Ball rider

3. Valve spool 14. Relief valve spring4. Ball 15. Washer5. Ball rider it . Spring housing6. spring 17. Screw7. "0' nng 18. Washer8. Spool end 19 . Pipe plug9. Roll pin M . Return spring9A. Roll pin 21 . Spring seat10. Valve body M. Fibre washer11. Relief valve .at 23. Plug

74


INTERNATIONAL HARVESTER Paragraph 216 Cont.

are available only as a matched set. When reassembling , dip all parts in seal (1) after spool is installed in valveRelief valve spring free length is clean Hy-Tran oil and renew seal (1) body.

2-27/32 inches and should exert 85 -95 and all "0" rings . The spool (3) must be Reinstall valve on tractor, then filllbs. pressure when compressed to a installed in top of valve body to and bleed hydraulic system as outlinedlength of 2.568 inches. prevent damage to "0" ring (2). Install in paragraph 192.

75


NOTES

76


NOTES

77


NOTES

78


NOTES

79


NOTES


ih_b275-b414_354-364-384_424-444_2424-2444_manual

Documents

cubic inch displacement

engine removal

cubic inch displacementengine

engine crankcase

engine serial number

paragraphseries b

diesel fuel systembleeding

injection pump timing