Serv

ice

Man

ual

Service Manual

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF J.I. CASE OR IT’S SUCCESSORS. J.I. CASE AND IT’S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

D Series D, DO, DE

DC-3 & DC-4

CA-S-DSERIES

Ji.{ ..

~v S E R V ICE M' A N U A L

.. MODEL D SERIES

TRACTORS

DC-3 DC-4 DCS

- , "

; . . :. '.

MODELS

..

Edabliabad 184%

o DO DE

E.t~U.becl 18~ J. I. CAS E _> COM P A. N Y Incol'porated

RAe I N E .. W IS C ON S IN - u. s. A • ... :: .. ....

J. I. CASE CO.

Racine, Wisconsin

Case "DC-3" Case "DC-4" Case "DV" Case "VAS"

General

J. I. Case "DC·S" "DC·4" "DV"

Number and Size Plows. . . . . . . . . . . . .. 3-14 Type-Axle, Adj. Axle, Tricycle ... (3) A.A&T

(4) Axle Approximate Max. Weight, Std. Equip .. RNA Nebraska Test Number .......... (3) 340 Rear Tread, Adj. Range-Inches ..... 48-*84 Front Tread, Adj. Range-In ... (Trl.) 9-141h

(Axle) 48 ' (Adj. Axle) 56-80

Height Overall-Inches ........ (Trl.) 58 (Adj. Axle-Axle) 56 1h

Length Overall-Inches ....... (Tri.) 140 Wheelbase-Inches ........... (Trl.) 88%

(Adj. Axle-Axle) 74.5 Electric Starting-Standard, Optional. Opt. Cul tivating Clearance-Inches .. (Tri.) 24.6 Hydraulic Power Unit ......... (TrL) Std.

(Adj. Axle-Axle) Opt.

Belt Pulley-P. T .O.-Engine Pulley Diameter, Standard-Inches ... 1214 Pulley Face Width-Inches .......... 714 Pulley Speed, Loaded-rpm.......... 818 Pulley Speed, Loaded--fpm. . . . . . . . . . 2620 Power Take-off-Std., Opt . . ..... (3) Std.

(4) Opt. Is Power to P.T.O. Continuous? .... Yes P.T.O. Cont. When Gearshifting? ... Yes Engine-Make and Model. . . . . . . . . . . .. Own D Number Cylinders & Displacement .... 4-260 Rated rpm ...... . . . . . . . . . . . . . . . . . .. 1200

Brakes-Steering-Tires Brakes Type-Double Disc? ....... . Brakes Locatlon-Diff. Side Gears? Steering Type-Worm & Wheel? ..•. Tire Size-Standard Rear-Inches . . . . Tire Size-Std. Front-Inches .... (3)

(4)

Transmission of Power Clutch-Wet Single Plate? ........ . Clutch-O'center, Spring Loaded .... . FInal Drive-Spur, Chain ............ . High Gear Ratio ......... " ........ . Low Gear Ratio ................... . Speeds-Number Forward .......... . Speeds-Number Reverse .......... .

1953

Yes Yes Yes 1lx38 5.5x16 6x16

Yes SL Chain RNA RNA 4 1

3-14 Axle

RNA None 43

47lh

50% 119

66.3 Opt.

Opt.

1214 7"'-818 2620 Opt.

Yes Yes OwnD 4-260 1200

Yes Yes Yes 13x26 6.00x16

Yes SL Chain RNA RNA 4 1

1953-1955 1953-1955 1953-1955 1953-1956

Case IDC-3" (Non.adiustable axle type "DC·4" is similar)

J. I. CASE CO.

Racine,Wisconsjn

Case "DV"

J. I. CASE co. Racine, Wisconsin

Advertised Speeds, mph, With Std. Transmission & Std. Tires-Models DC-3, DC4 & DV: 2.2, 3.8, 5.2, 1004; reverse, 3.0. *96" available on order for DC-3. RNA-Manufac­

turer declines to release the information.

I

Air Cleaner : Own, oil wash. Carburetor: Zenith, 11,4 in. Clutch: Twin Disc. Governor: Own, flyball. Ignition: Own, magneto . Lighting: Electri.c. Oil Filter: ___ _ Radiator: Own. Radiator Cover: Shutters. Spark Plugs: AC 75. Starting: Electric. Data: H.P.-Neb. Test No. (not tes ted).

Number of plows recommended: Two to three, 1 4 in.

E n gine: Own; 3%x5*, 1,10 0 .. r.p.m., 4 cylinders, valve - in - head; removable sleeves, yes.

Pulley: 11 %x6 ~, 846 r.p.m. and 2,600 f.p.m . at normal engine speed.

Speeds: M.P.H. forward 2*, 3*, 4 % . 9 %, and 2* reverse.

CASE INDUSTRIAL, ' MODEL "DI" • J. Y. Case Co., Racine, 'Vis.

CASE "DH" J. I. Cas'e Co., Racine, 'Vis.

Air Cleaner: Own, oil bath . Carburetor: Zenith, 1 %, in. Clutch: Twin Disc. Governor: , Own, flyball. Ignition: . Own, magneto. Ughting: ., Electric. Oil Filter : _________ ... ____ _____ '- ___ ---Radiator: Own. Radiator Cover: ______ ___ ____ '-______ _

, Spurl.: Plugs: % in. Starting: EI.~ctric. Duta : H . P.-'·'_· Neb. Test No. (not tested). Engine : Own; 3%x5*, 1,100 r.p.m., 4

cylinders, valve - in - head; removable sleeves, yes.

Pulley: 10 ~ x6 ~, 973 r.p.m. and 2,600 f.p .m. at normal engine speed.

Speeds: M.P.H. forward 2.89, 4.14, 5.67, 11.45, and 3.38 reverse .

1940

Air Cleaner: Own, oil wash. Oarburetor : Zenith, 11,4 in. Clutch: T win Disc. Governor : Own, flyball. Ignition: Own, magneto. Lighting: Electric. Oil Filter : ______ __ ___ .... ~ ________ ..: ___ _ Radiator: Own. Radiator Covel:: Shutters. Spark Plugs: AC 75. Starting: Electric. Data: H.P.-Neb. Test No. (not testeq).

Number of plows recommended: Two to three, 1 4 in.

Engine: Own; >3%x51h, 1,100 r. p.m., · 4 cylinders, valve-in-head; removable sleeves yes.

Pulley : 10 1,4x6 1h, 973 r.p. m. a nd 2,6 00 f .p.m. at normal engine speed.

Speeds: M.P.H., forward 2lj3, 3%, 4%, 9 1h, and 2 1hreverse.

CASE MODEL "DC" J. I. Case Co., Racine, 'Vis.

1940

CASE MODEL "D" .T. I. Cas'e Co., Racine, 'Vis.

Air Cleaner: Own, oil wash. Carburetor: Zenith, 11,4 in. Clutch: Twin Disc. Governor: OW'n, flybail. Ignition: Own, magneto. Lighting: Electric.. Oil Fil ter: ________________ ~ _________ .

Radiator: Own. Radia tor Cover: Shutters. Spark Plugs: AC 75 . Starting: Electric. Data: H.P.-Neb. Test No. (not tested).

Number of plows recommended: · Two to t hree, 14 in.

Engine: Own ; 3%x51h , 1,100 r.p.m., 4 cylinders, valve-in-head; removable sleeves, yes.

Pulley: 11%.x6 1,4, 846 r.p.m. and 2,600 f.p.m. at normal engine speed.

Speeds: M.P.H. forward 2¥.!, 3th, 4~L 9 %., and 21h reverse.

, •

J. I. CASE rJIlOEl. DC

One of the most popular of the J. I. Case tractors as the Model DC. Owners of this model have

maintained a strong loyalty to its dependability . It was introduced in 1939

and was marketed until 1954. Its basic design and styling remained about the same throughout its production period of 16 years.

Some of the "DC" characteristics were the styled cast iron grille, fan shaped fenders, the familiar long steering ann extending along the left hand side of the tractor, the tricycle front wheels extending beyond the front of the radiator, and the familiar hand clutch.

Common also was the cast iron front wheels to give added weight to the front when under heavy pulling loads.

The DC weighed about 5,000 lbs. This could be considerably increased with wheel weights and fluid in the tires. The engine was a four cylinder with a bore of 3 7/8 inch, and stroke 5 1/2 inch. It was a valve-in-head with a rated speed of 1100 RPM.

Among Case. fans the slow running engine was a trademark that was well liked. This tractor was noted for good lugging power and excellent performance under. heavy loads. There were several models,

and some ardent fans only collect D models. They are D

,(Standard and Wheatland).: ".' 'DC (Row Crop) DO

(Orchard), DI (Industrial) DH (High-Crop). or DCS (Cane Tractor), DC 3

~ (Adjustable Wide Front). , The DC delivered about 25 . HP on the drawbar and in Nebraska tests delivered a fuel economy of 12.1 horsepower per gallon of gasoline. The paint color helped identify the DC. Throughout it production life it was painted a Flambeau Red (Dupont 066DH). During the DC tractor

production period about 68,941 units were built. During the World War II period in 1943 only 483, tractors were built. The greatest number, over 11,000,' were manufactured in 1950. The J. I. Case Company

sold not only their tractors, but all products manufactured '\ by them, under the same' . warranty coverage. Case was: . noted for quality products.

•••• ................. 00 .................. 0 •• 00... I N D EX·················································

Page No.

Adjustment of Spiral Bevel Gears

Adjusting Rear Axle Bearing ............ .

42

41

Adjusting Front Wheel Bearing. . . . . . . . . .. 54

Air Cleaner .................. . . . . . . . . . . . 13

Battery ................................ 18

Belt Work .............................. 58

Brakes ........... , ........... . ......... 47

Calcium Chloride, for Tires . . . . . . . . . . . . . . .. 53

Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Carburetion ............................ , 21

Clutch ................................. 28

Cold Weather Operation .......... . . . . . . .. 13

Cooling System. . . . . . . . . . . . . . . . . . . . . . . . .. 10

Connecting Rods ........................ 26

Crankcase Breather. . . . . . . . . . . . . . . . . . . . .. 14

Crankshaft ............................. 31

Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . . . .. 24

Cylinder Sleeves ......................... 25

Differential Assembly .. . . . . . . . . . . . . . . . . .. 41

"DCS" (Cane) Tractor........... . . . . . . .. 45

Drawbar ............................... 58

Drive Chains. . . . . . . . . . . . . . . . . . . . . . . . . . .. 41

Engine, Removing ....................... 30

Fan. .......................... ... ... ... 11

Fan Belt ............................... 12

Fuels .................................. 19

Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 22

Generator .............................. 18

Governor ............................... 22

Ignition ................................ 15

Inflation-Tire .......................... 51

Lubrication ............................. 6

Magneto ............................... 15

Manifolds .............................. 19

Motor Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 57

2

Page No.

Oil-Crankcase . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Oil Filter .... . . . . . . . . . . . . . . . . . . . . . . . . . .. 14

Oil Pressure ........................... .

Oil Pump ................ " ............ .

Oil-Transmission ...................... .

Oil Trap, Air Cleaner .................... .

Operation, Tractor and Engine ........... .

Pistons ................................ .

Piston Rings ........................... .

Power Take-Off ........................ .

Radiator .............................. .

Seat .................................. .

Serial Number ......................... .

Service Suggestions ..................... .

Shutter, Radiator ....................... .

Spacing, Rear Wheel .................... .

Spark Plugs ........................... .

Specifications .......................... .

Speeds ................................ .

Starting Motor ......................... .

Static Electricity ....................... .

Steering Gear .......................... .

Tires

Tools

Tractor, Splitting

Tractor, Stopping

Tractor, Starting

Transmission and Differential ............ .

Transmission Breather .................. .

Valves ................................ .

Water Pump .......................... .

Water in Tires ........................ .

Water in Crankcase ..................... .

Wheel Weights ......................... .

32

32

10

14

5

26

27

55

12

59

59

38

12

51

17

3

4

18

54

47

51

60

28

6

5

39

14

23

11

53

13

52

REMOVING THE CLUTCH ASSEMBLY

The clutch can be removed and new friction discs installed in a short time. To do this work, it is necessary to split t he tractor:

Remove the hood. Remove battery cables. Block the drive wheels securely and install

a jack beneath the 't ransmission case.

Preparing the right hand side of the tractor for clutch removal:

Remove the spark plug wires to avoid all possibility of the engine starting while work­ing on the clutch.

Disconnect the starting cable from the sta:rting motor ' and from the cylinder block clip.

Remove the pin from the . belt pulley brake shoe .and disconnect and/or remove the shut­ter control rod.

Disconnect the wire from the ammeter to the generator, and tbe magneto switch wire.

Disconnect the governor lever rod.

Preparing the left hand side of the tractor for clutch removal:

Remove the air cleaner reservoir and the fuel tube.

Disconnect the oil tube to the oil pressure gauge and the heat regulator rod at the rear end of the fuel tank. (If a combination mani­fold is used.)

Remove the clutch throwout arm from the clutch throwout shaft.

Remove . the choke control, and disconnect the temperature gauge thermal bulb at the radiator inlet.

Separate the steering drag link from the steering arm ball.

Preparing the clutch housing for removal of the clutch:

Remove both clutch hand hole covers. Remove the .. %," transmission flange bolt

on each side of the flange and replace with two %," byl3~ ~ " splitting pins. There special pins bear the number, 139-AA. Oil these pins

Figure 49. Preparing the Tractor for Splitting

28

( 1

(

i-:GENERAL SP~CIFICATIONS

Engine ...................... , •..............

Cooling Syst~m •..•. , ~.' . '.' : ..... ; .. ," ',' .... Ele~tdcal Sy~tem c' ••••• ' ••• , ••••••• , ••••••

Live'Power,Take-ofl' .. ; .................. .

'BeltPulley, Tractor ..................... .

Belt Pulley, Engine Unit ................. .

Approximate Capacities ................. .

Page

7

8

8

8

8

8

9

·Page Hydraulic System ....................... 9

Eagle Hitch .......... ;, ............ ;.... 9

Toe-in ................................ " . 9

Travel Speeds, Approximate ... '. . . . . . . . . . . 10

Tire Pressures .......................... 9

Weights, Approximate. . . . . . . . . . . . . . . . . . . 10

TighteningSpecHications •. l! . . . • . •. • . . •. • . 10

. II-ENGINE

GOVERNOR. . . . . . . . . . . . . . . . .... .... . . . . 13

Adjusting Governor Linkage ... '. . .. . . . . . 14

Adjusting Engine Speed ... . •.. . .•. . .. .. . 15

Chec}dng Governor Action . ' .. ' ..... ; . . . •. . 15

Governor Surge .; .•........... ; ...... , 15

Sluggish Governor Action ..........•... 15

Removing and Servicing the Governor . . .. 16

Timing before .R~moval ................ 16 . ' ~.: '.; .' "

Cliecking and Replacing Governor Parts. 16

Replacing the Mag~eto Bracket and Gover-nor Assembly ....... ;: . . . . . . . . . . . . . . 17

->.... .< "

VALVES........... ...... ..•........ ..•.. 18

Servicing Valve Mechanism ......•.•.. 'V .' 18

·Reconditioning the Head ............. 19

Valve Springs ...................... 19 '.

Valve Guides . . . . . . . . . . . .. . . . . . . . . . . . 19

Refacing Valves .................... 20

3

Grinding Valve Seats ......... " . .. . . . 21

Hand Lapping of Valves . . . . . . . . . . . . . . 21

Push Rods ...... " .' .................. "'21

Push Rod Lifters . . . . . . . . . . . . . . . . . . . . 21

Rocker Arms and Shafts ... . . . . . . . . .. 22

Valve Clearances ............... , . . . . 22

Condition of Valves. . . . . . . . . . . . . . . . . . . . . 23

Valve Life (as.afl'ected bY)

StorageB~fore Delivery .•...•....... " 25

Storage By Customer. . . .•. .• .. . . . . . . . 25

Cleariing Cooling System ... ;: . 00 •••• ; 25

Gasoline ..................... . . • . . . 26

Crankcase Oil .. .. .. .... .. ... . ....... . 26

Air Cleaner Service . . . . . . . . . . .. . . . . .. 27

.' Engine ()verh~a~ing . . . . . . . . . . . . . . . . .. 27

Excessive Load and ,.Engine RPM . . . . . . 28

Use of Uppe:.: Lubricant. .. . . . . . . . . . . . 28

Table of Contents Continued III-LIVE POWER TAKE-OFF.

EA G LFf HITCR'AND TRANS1\USSION

SPLITTING THE TRACTOR

Splitting Operation ................... .

5i~RVICING TRACTION CLUTCH .. .

Replacing Clutch Parts .... ; ....... ; .. .

Traction Clutch Adjustment ........... .

TRANSM1SSION TOP COVER .......... .

Removal ............................ .

Page

31

31

32

E3

34

35

35

Installation ........................... 36

SERVICING SHIFTER MECHANISM..... 36

General .............................. 36

Gears Slipping out of Mesh. . . . . . . . . . . . . . 37

Gears Locking in Mesh .. . . . . . . . . . . . . . .. 37

Shifting into Two Gears at Once . . . . . . . . 38

Diffie ulty in Shifting into Gear . . . . . . . . . . 38

Removing and Reinstalling Shifter Assemblies ................... ;..... 38

LIVE POWER TAKE-OFF ............. .

Traction Clutch Cover Assembly ........ .

Drive Sleeve and Gear Assembly ........ .

Power Take-off Drive Shaft Gear .; ...... .

Power Take-off Drive Shaft ............. .

Power Take-off Clutch Spider .......... .

Power Take-off Clutch and Stub Shaft ... .

Power Take-off Clutch and Stub Shaft Removal and Disassembly ........... .

Power Take-off Clutch and Stub Shaft Assembly and Installation ........... .

Power Take-off Drive Shaft and Sump Housing Removal ................... .

41

41

41

42

42

43

43

44

46

48

Page

£gwer Take-off Drive Shaft and Sump Housing Disassembly ................ 50

Power Take-off Drive Shaft and Sump Housing Assembly . . . . . . . . . . . . . . . . . .. 51

Power Take-off Drive Shaft and Sump Housing Installation .. . . . . . . . . . . . . . .. 52

Adj LIsting Power Take-off Clutch . . . . . . .. 53

Traction Clutch Shaft, Power Take--off Drive Sleeve and Gear Assembly Removal and Disassembly. . . . . . . . . . . . . . . . .. . . . . . . . 54

Traction Clutch Shaft, Power Take-off Drive Sleeve and Gear Assembly and Installation 57

EAGLE HITCH ............. . . . . . . . . . . .. 59

Draft Arms and Latch Assembly . . . . . . .. 59

Removal and Disassembly ............ 59

Assembly and Installation . . . . . . . . . . . . 60

Rockshaft and Rockshaft Arms ............ ' 60

Removal ..... ,. ................. .... 61

Installation .......................... 61

Level Screw ......................... .

Removal andDisassembly ............ ;

Assembly and Installation ........... .

Left Hand Lift Link Adjustment ...... .

DIFFERENTIAL BRAKES ............. .

Servicing Instructions ................ .

Differential Brake Adjustment ......... .

DIFFERENTIAL OIL SEALS ........... .

Replacing the Differential Oil Seals ..... .

RESILIENT BELT PULLEy ........... .

Removal and Disassembly

Assembly and Installation

62

62

62

63

63

64

66

66

67

69

69 69

SERVICE SHOP EQUIPMENT . . . . . . . . . . . 70

GeneralSh9P Service Tools . . . . . . . . . . . . . . 70

Special Service Tools . . . . . . . . . . . . . . . . . .. 70

DEALER'S TRACTOR DELIVERY REPORT 73

PRECAUTIONS WHEN USING EAGLE HITCH ............. :. . 75

4

ASSEMBLY

Replace the spid~rqearing in the hol.lsinifrom the rear, Figure 5!8: Install the spider bearing retaining snap ring; Install the oil seal from the rear of the

L_______ _ __ _ _ Figure 51

Assemble the spider to the drive shaft (if dis­assembled), using new snap rings and 0 r ing.

Install the assembled spider and drive shaft into the sump housing from . th~ rear, Figure 54.

NOTE: Place a thin film6f grease on the spider so the oil seal will not be damaged. Support the front end of the drive shaft and be sure the as­sembly enters the oil seal and bearing <squarely so it will not damage the .seal or binciin the bear­ing.

Place a hardwood block on the spider and drive the assembly forward until the spider bearing is properly seated on the shoulder of the spider.

Slip the lock washer, and then the spider bearing lock nut, on the drive shaft from the front, Fig­ure 50. The lock nut must · be tightened securely. Its purpose is to prevent the bearing race from turning . on the spider. Bend an ear of the lock washer over the lock nut to secure it.

The PTO shaft.. and sump housing are now com­pletely assembled.

INST AbLATION OF THE POWER TAKE-OFF DRIVE SHAFT AND .THE Sl.JMP HOl.JSING

Before inst~llingthe drive' shaft.and sump housing,check to see that.. all parts have beeriproperly assembled. Pay particular attention to see t hat all snap rings are properly seated.

TOOLS REQUIRED

2-Number pins used f~~ replacing the hydraulic pump. These are two % x 2 studs and can be made up locally.

2-NumbeJ::.086()7-AB guid~pill~llsed for replacing the sump housing. These are two 1f2 x 4 inch standard - thread studs anel canbe made up locally.

I-Set Number I39-AA tractor splitting pins. These are two hardened shafts %. x I31~16 inch with provision for cotterpins .and can be.made up locally.

General shop service tools will also be required, incIudinl{ a sqc;l<et wrench set and snap ring tools.

INSTALLATION

Apply gasket cement to the transmission case and install a new gasket.

Using the Number 08667-AB guide pins, begin replacing the housing and drive shaft. As the drive shaft approaches the front of the transmis­sion case, tap on the PTO drive shaft gear.

52

Replace the capscrewsthat hold the sUl11phous­ing to the transmission.

Replace the PTO shaft front bearing, the snap ring, gasket and front bearing cover. If the tractor was not split, these can be replaced by reaching through the clutch housing hand hole.