Parts Manual

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF CATERPILLAR OR IT’S SUCCESSORS. CATERPILLAR 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.

Parts

Man

ual

931B Traxcavator S/n 26Y1 & Up

CT-P-931BTX26Y

". "

CONTENTS j ALPHABETICAL INDEX OF GROUPS __ 3

CONVERSIQN EOUIVALENT . ·TABLES INSIDE BACK COVER

ORDER1NG PARTS _______________ 2

OUICK REFERENCE. CHART . INSIDE FRONT COVER

US1NG THE PARTS BOOK ____ :..._~---2

PARTS ·····K·

931B·LGP T'RACK LOADER P;OWE,REDBY 3204, ENGINE SERIAL NUMBER 26Y1,.UP (VEHICLE) 45V21898-UP (ENGINE) 1 FA1-UP (TRANSMISSION) 87U755-UP (FIXED PIVOT BACKHOE) 32W1.,UP (FIXED PIVOT BACKHOE) 88U594-UP (SIDESHIFT BACKHOE) 68H1-UP (SIDESHIFT BACKHOE) 7WA1-UP (WINCH)

REVISION PUBLISHED JUNE 1983 CATERPILLAR TRACTOR CO. PUBLICATIONS DIV.-SERVICE G.O. PEORIA, ILL. U.S.A.

FORM SEBP1248

QUICK REFERENCE GUIDE TO MAJOR SECTIONS

REPLACEMENT ITEMS AND SCHEMATIC

BASIC ENGINE

LUBRICATION SYSTEM

COOLING SYSTEM

INTAKE AND EXHAUST SYSTEM

FUEL SYSTEM AND GOVERNOR

STARTING AND ELECTRICAL SYSTEM

POWER TRAIN-POWER TRANSMISSION UNIT

STEERING CLUTCHES AND BRAKES

CHASSIS AND UNDERCARRIAGE

HYDRAULIC SYSTEM

IMPLEMENTS

CAB, GAUGES AND ACCESSORIES

IN D EX ENGINE ARRANGEMENT LIST STARTS ON PAGE 4

A

Name' Page

Accessory Drive ................... 35 Air Cleaner ........................ 24 Air Conditioner Arrangement. ~ ... 208A Air Condittoner .................. 208B Air Filter Indicator ................ 211 Air Lines .......................... 25 Alarm-Back-Up Warning .......... 53 Alternator .............•.. ; .•.....• 45 Arm-Bucket Control .. ~ .......... 162

B

Backhoe Arrangement - Fixed Pivot .. 166

Backhoe Arrangement - Sideshift .... 165

Backhoe Bucket .................... 169

Backhoe Bucket linkage ............. 172

Backhoe Console ................... 180

Backh'oe Ejector Bucket .............. 168

Backhoe Mounting ................. 167

Backhoe Mounting & Control ........ 181

Backhoe Stick ...................... 179

Back-Up Warning .................. 53

Batter):, .......................... .

Batte'fy & Wiring .................. .

B'attery - Heavy Duty ............. .

40

40.

51

Bearings - Crankshaft .............. 10

Bevel Gear .. . . . . . . . . . . . . . . . . . . . . .. 68

Boom ............................. 178

Boom Cylinder ..................... 158

Brake lining ....................... 81

Breather - Crankcase .............. 19

Breather - Hydraulic Tank .......... 111

Name Page

Breather - Steering Clutch Case ..... 62

Breather - Transmission ............ 58

Bucket - General Purpose .......... 164

Bucket Control ..................... 162

Bucket Cylinder .................. ;. 159

Bucket Indicator .. ' .................. 16-3

Bucket Positioner & Kickout .......... 160

c Cab .............................. 186 Cab Heater ...................... ; 208G Cab Mounting ..................... 92 Cab Pressurizer .... " ............. 194 Cab Wiring ....................... 198 Cable-Governor Control ........... 28 Camshaft .......................... 11 Cap-Crankcase Oil ...........•... 13 Cap-Fuel Oil Tank ................ 38 Cap-Hydraulic Tank ............. 109 Clutch & GearWinch ............ 184K Connecting Rod and Piston ......... 11 Cooler-Engine Oil ................ 22 Cooler- Hydraulic ................ 22A Counterweight ..................... 95 Counterweight-Idler .............. 97 Counterweight-Sprocket .......... 97 Covers & Case Winch ............ 184J Crankshaft ......................... 9 Crankshaft Pulley .................. 14 Cutting Edge-" Bucket ....... '" .. 164 Cylinder-Boom .................. 158 Cyli nder-Bucket ................. 159 Cylinder-Lift .................... 152 Cylinder-Stabilizer .............. 154 Cylinder-Stick ................... 157

Name Page

Cylinder - Tilt ..................... 151

Cylinder Block & Covers . ~ . . . . . . . . .. 6

Cylinder Head ..................... 12

D

Dash ....................... : ....•. 212

Door - Cab ...................... 190

Drawbar .......................... 95

Drive Shaft - Bevel Gear ........... 69

E

Engine Arrangement ................ 4

Engine Enclosure ............ ~ ...... 85

Engine & Transmission Support .. . . . .. 16

Ether Starting Aid .................. 50

Exhaust Extension .................. 27

Exhaust Manifold .......... 0 ••••••• 25

F Fan-Blower ........ : 0 .. 0 •.... 0 0 .... 21

Fan-Suction .. 0 . 0 0 0 .... 0 0 . 0 . 0 0 0 ..• 21 A

Fan Drive ... 0 . 0 0 0 0 0 ... 0 0 o •• 0 .. 0 00 •. 0 14

Filler-Transmission &

Steering Clutch Oil 0 • 0 .... 0 . 0 0 • 0 .. 0 0 62

Filter-Air Cleaner .. 0 0 .• 0 .. 0 00 ..•.... 24

Filter-Cab Pressurizer . 0 ... 0 . 0 .• 0 •. 1 96

Filter-Engine Oil 0 0 0 ..•. 0 0 . 0 .• 0 0 0 •• 0 . 1 7

Filter-Fuel. 0 0 0 .. 0 0 0 0 0 ... 0 0 ..•... 0 . 0 37

Filter-Hydraulic Tank . 0 0 0 .0 0 . 0 0 0 ... 1 09

Final Drive .. 0 0 ... 0 0 0 0 0 0 0 .. 0 0 0 0 ..... 0 70

Flywheel 0 0 0 0 0 0 0 0 0 0 .. 0 0 . 0 0 ... 0 0 0 0 0 0 0 1 5

Flywheel Housing 0 . 0 0 0 0 0 0 0 0 .. 0 0 ... 0 0 1 5

Name Page

Frame-Backhoe ................. 176

Front Housi ng .................... 15B

Front Id ler ......................... 98

Front Pu II Hook .................... 83

Fuel Filler Extension ............... 39

Fuel Injection Lines ................ 34

Fuel Injection Pump ................ 33

Fuel Oi I Li nes ...................... 36

Fuel Oil Tank ........... ~ .......... 38

Fuel Transfer & Priming Pump ...... 36

Fumes Disposal ..............•.... 19

G

Gasket - Cylinder Head .. 0 ••••••••• 12

Gasket - Oil Pan ..... 0 •••••••• 0 •• 16

Gasket - Valve Cover .... 0 ••••••••• 13

Gasket Kits . 0 ••••.•• 0 • 0 •.••••••••• 0215

Gauge - Ammeter 0 ••••••••••• 0 •• " 42

Gauge - Engine Oil Level. 0 •. 0 • 0 .• o. 17

Gauge - Hydraulic Oil Temperature .112

Gauge - Oil Pressure .............. 211

Gauge - Oil Temperature .......... 211

Gauge - Steering Clutch Oil 0 ••.• 00. 62

Gauge - Transmission Oil ... 0 0 ••••• 62

Gauge - Water Temperature ........ 211

Gauges .......... 0 •.•••••••••••••• 211

Governor . 0 •••••••••••• 0 ••.• 0 0 •• o. 30

Governor Control 0 .•• 0 ••..•. 0 ... 0 o. 28

Governor & Fuel Injection Pump .. 0 ••• 32

Governor & Transmission Control .. 0 •• 29

Grab Iron - Frame ... 0 •.••. 0 •.••. 0 0 93

Grease Gun 0 0 • 0 . 0 .•..•.. 0 0 ••••. 0 .• 214

Guard - Bottom Frame . 0 o. 0 0 .. 000 •• 84

Guard - Brush .... 0 .• 0 0 •.•• 0 ••••.• 90

Guard - Radiator 00 .• 0 0 . 0 •. 0 ••.••• 82

Nome Page Nome Page

Guard - Recoil Mechanism ......... 100 Lines-Bucket Cylinder . .......... 149 Lines-Fuel Injection ............. . 34 Lines-Fuel Oil . .................. . 36 Lines-Hydraulic Backhoe . ....... 136

H lines-Hydraulic Front . .......... 135

Handle - Transmission Control ...... 66 Lines-Hydraulic Pump . ........ " 133

Harness - Battery & Wiring ......... 43

Harness -Cab Wiring .............. 200

Hoo.d & Guard ........... . . . . . . . . .. 87

Lines-Hydraulic Rear Attachment ................ 134

Lines-Lift Cylinder . ............. 141 Lines-Stabilizer . ................ 142

Horn - Electric .................... 209 Lines-Stick Cylinder .. ........... 144 Hoses - Steering Clutch Control ..... 74 Lines-Swing Actuator . .......... 138 Hoses -..:.. Upper & lower Radiator .... 20 Lines-Tilt Cylinder . ....... " .... ~ 140 Hour Meter - Electric ............... 212 Lines-·. Winch ................... 184T .

Hydraulic Arrangements ............. 1 ] 3 Lines & Pump-. Winch Drive . ...... 130·

Hydraulic Hand Control ............. 114

Hydraulic Hand Control lock ........ 117

Lines & Valve-Backhoe . ......... 137 Link Assemblies-Track . .. ~ ...... 104

Hydraulic Tank & Filler .............. 109 Linkage-Governor & Transmission Control . ............ 29

Loader Frame . ...... , .............. 93 Loader Tooth . .................... 184

K

Kit - Alternator Repair ............. 46 M

Kit - Gear Pump Repair ............ 129 Motor - Cab Pressurizer ............ 195

Kit - Magnetic Starting Switch Repair. 49 Mounting - Backhoe ............... 167

Kit - Starting Motor Repair .......... 48 Mounting - ROPS .................. 92

Kit - Water Pump Repair ........... 21 Muffler ........................... 26

L N

Lever-Hydraulic Control . ........ 114 Lift Cylinder . ..................... 152

Name Plates & Films ................ 216

Lift Cylinder Brace . ................ 91 Lifting Eye-Engine . ............... 10 Lig hti ng ........................... 52 o Liner-Firewall . ................... 86 Lines-Air Conditioner . ........ . 208C Oil level Gauge - Engine .......... 17

Li nes-Boom . .................... 146 Oil Pan ........................... 16

:.:.:.1 .- .. ~ ~ .

-.i

~ -',,~ ~ .= ~-'-~~~~--=--""'-=-"""''''''''''''''<'''' ~""-"'..,"-"''''""~.... ·_...,s ....... ~ ..... _,."- "'-"_- ""~-",-=c,,",,,",,--,_,=-..x. ---'--' .•. _ .... ""-0=.... _ _ "'-"-"-'-'''"' ..... _--=''--= ... _.-,.''''''_=f-'--'-'""'''-'_~-'-_'-'-''"'-'''·~,,-_, __ ...,.-=''"·''-,?-'-~,_._.--'-,'... _- .......... -...o,.'-'_-.....::.~,c. __ '- - --' - ~ -.-.-"-•• -'·~':-"'";..:-~~""~ .... -=-=~~ ..... -t.."k::.::;,.~·~.~~~·~.=~~~"":i

Nome Page

Oil Pump - Engine .... . . . . . . . . . . . .. 18

p

Padlock-Hydraulic & Fuel Tank Cap . ................... ~<o~ ••• 39

Padlock- Hydraulic Tank Cap . .... 111 Padlock-Vandalism Guard . ..... . 210 Pedal-. Steering Brake ... .......... 79 Piston Rings . ...................... 11 Planetary Transmrssion ............ 56 Power Take-Off-. Wi.nch· Drive ...... 64 Power Train Schematic . ........... . 2B Precleaner . ........................ 24 Protective Cover-

Hydraulic Tank Cap . ............. 111 Pulley-Crankshaft . ............... 14 Pump-· Fuel Transfer & Priming .... 36 Pump-Gear-Winch Drive . ........ 130 Pump-Hydraulic Gear. ........... 128 Pump-Piston-Hydraulic ........ 131 Pump and Lines-Winch ........ . 184S

R

Radiator ........................•. 20

Radiator Guard .................... 82

Radiator Hinged Guard ............. 83

Recoil Spring - Front Idler .......... 98

Ripper ............................ 183

Rocker Arm - Valve ................ 13

Ro"over Protection ................. 185

Roll-Over Protection System -Modular Cab .................... 185

5

Screen - Transmission Return ........ 60

Nome Page

Seal-Final Drive . ................. 71 Seal-Fuel Filter Line to

Fuel Injection Pump . ............. . 37 Seals-Crankshaft . ................. 9 Seals-Fuel Pump Housing ........ 34 Seat . ............................. 203 Seat-Backhoe Arrangement . ..... 206 Seat-Suspension . ............... 206 Seat Belts .................. : ..... 207 Shipping Covers-Winch ........ 184H Side Cutter-Blade ............... 171 Side Cutter-Strike Off . ........... 171 Sliding Frame-Backhoe . .......... 175 Sound Suppression Arrangement . .. 86 Specifications . .................. . 218 Sprocket .......................... 71 Stabilizer-Backhoe . ............. 182 Stabilizer Cylinder ................ 154 Starting Motor-Electric .......... . 47 Steering Brake . .................... 78 Steering Clutch . ................... 73 Steering Clutch Case . .............. 72 Steering Clutch Control . ........... 74 Step-Extension . ................ 103 Stick Cylinder . ................... 157

. Strainer-Fuel Tank . .............. . 38 Street Pad . ....................... 182 Support-Engine & Transmission . .. 16 Support-Undercarriage ........... 94 Support & Seat ................... 202 Swing Actuator . .................. 173 Swing Frame-Backhoe ........... 175 Switch-Alarm .................... 53 Switch-Cylinder Control . ........ 161 Switch-Lift Arm Control ........ .- 160 Swltch-Magnetic-

Starting Motor . .................. . 49 Switch-Starting Aid . ............. . 42

.-j .~

;;

Name Page

Switch - Tilt Cylinder Control ....... 160

T

Thermostat i~ Water Temperature .. " 22·

Tilt Cylinder ....................... 151

Tool - Backhoe ................... 214

Tools - Hand ..................... 213

Tooth - Ripper .................... 184

T orq ue Control . . . . .. . . ... .. . . . . .. . .. 32

Torque Converter .................. 55

Torque Converter Cooler Lines ....... 23

Track ... ~ ......................... 104

Track Carrier Roller ................. 103

Track Cleaner Bar .................. 108

Track Roller ....................... 102

Track Roller Frame ................. 101

Transfer Case & Gear ............... 58

Transmission Arrangement ........... 54

Transmission Control ................ 66

Transmission Lubrication System Control 60

Transmission Pump ................. 62

u

Undercarriage Support ............. 94

Universal Joint - Power Toke-Off .... 65

v Vandalism Guard .................. 210

Name Page

Vandalism Protection -

Hydraulic & Fuel Tank Cap ........ 39

Valve - Breaker Relief -

Hydraulic Tank .................. 111

Valve - Boom lines Control ......... 148

Valve - Check - lift Control ........ 128

Valve - Hydraulic Bank ............ 120

Valve - Hydraulic Bank Control ...•• 118

Valve - Intake & Exhaust ........... 12

Valve - Lift Control ............ · .... 121

Valve - Main Relief - Pilot Operated 124

Valve - Multi-Purpose Bucket & Ripper Control .................... 122 .

Valve - Relief ~ Multi-Purpose

Bucket Cylinder .................. 127

Valve - Relief - Ripper Cylinder .... 127

Valve. - Steering Clutch Control ..... 76

Valve - Tilt Control ................ 123

Valve - Transmission Selector & Pressure Control .................. 61

Valve Mechanism .................. 13

Valve Mechanism Cove·r ............. 13

Vee Belt - Fan Drive ............... 14

w

Water Lines ........................ 22 Water Pump ....................... 21 Winch Arrangement ............. 184C Winch Control ................... 184X Winch Conversion ............... 184F Winch Drive ..................... 184R Winch Drlve-Ar'rangement .......... 63 Winch Lines ..................... 184T Winch Mounting ............... 184CC Windshield Washer ............... 201 Windshield Wiper ................. 201 Wiring-Cab ..................... 198

INDEX ALPHABETIQUE

Designation

Moteur de base (Page 4)

Page

Arbre a cames. . . . . . . . . . . . .. 11 Bielles et pistons. . . . . . . . . . .. 11 Bloc-cylindres. . . . . . . . . . . . .. . 6 BloG-cylindres (couvercle) . . . . .. 6 Brides de levage. . . . . . . . . . . .. 10 Carter de volant . . . . . . . . . • .. 15 Carter inferieur. .. . . . . . . . . .. 16 Coussinets de rechange

de vilebrequin .......... " 10 Culasse . . . . . ... . . . . . . . . . .. 12

. Ensemble moteur de base. . . . .. 4 .J Entrainement de ventilateur . . .. 14

Poulie de vilebrequin .......... 14 Soupapes (couvercle) ....... " 13· Soupapes et

train de commande ...... " 13 Support de moteur

. et de transmission . . . . . . . .. 16 Vilebrequin . . . . . .. . . . . . . .. 9 Volant. . . . . . . . . . . . . . . . . .. 15

Circuit de graissage (Page 17)

Filtre a huile moteur . . . . . . . .. 17 Jauge de niveau d'huile. . . .. . .. 17 Pompe a huile. . . . . . . . . . . . .. 18 Reniflard (carter moteur) . . . . .. 19 Tuyauterie d'evacuation

de vapeurs . . . . . . . . . . . . .. 19

Circuit de refro id issement

(Page 20)

Convertisseur de couple (tuyauterie du refroidisseur) 23

Radiateur. . . . . . . . . . . . . . . .. 20 Refroidisseur d'huile moteur . . .. 22 Tuyauterie d'eau. . . . . . . . . . .. 22 Ventilateur soufflant ........ , 21

Designation

Admission et echappement

(Page 25)

Page

Canalisations d'air . . . . . . . . . .. 25 Collecteur d'echappement. . . . .. 27 Filtre a air. . . . . . . . . . . . . . .. 24 Silencieux d'echappement. . . . .. 26

Alimentation en carburant et regulateur

. (Page 29)

Butee elastique de course de cremailhlre . . . . . .. 32

Canalisations de carburant. . . . 36 Commande de regulateur ..... , 28 Commande de vitesses

et regulateur. . . . . . . . . . . .. 29 Dispositif anti-vandalisme . . . . .. 39 Entrainement auxiliaire .. . . . .. 35 Filtre a carburant . . . . . . . . . .. 37 Pompes d'alimentation et

d'amorcage de carburant ... ~. 36 Regulateur et

pompes d'injection . . .. . . .. 32 Reservoir de carburant . . . . . . .. 38 Tuyauterie d'injection . . . . . . .. 34

Demarrage et installation electrique

(Page 40) .

Alternateur . . . . . . . . . . . . . .. 45 Avertisseur de recul . . . . . . . . .. 53 Batterie a

haute capacite. . . . . . . . . . .. 51 Batterie et cablage. . . . . . . . . .. 40 Demarreur electrique . . . . . . . .. 47 tclairage . . . . . . . . . .. . . . . . .52 Injection d'ether . . . . . . . . . . .. 50

Train de transmission

(Page 55)

Designation Page

Convertisseur de couple 55 Couple conique. . • . . . . . . 68 Mecanisme de transmission

(schema) • . . . . . . . . . . . . .. 2B Prise de force . . . . . . . . . . . . .. 64 Reducteurs lateraux. . . . . . 70 Transmission . . . . . . . . . . 54 Treuil (entrainement). . . . . 63 Tubulure de

remplissage d'huile. . . . . 62 Vitesses (commande) . . . . . 66

Embrayages de direction et frains

(Page.72)

Embrayages de direction. . . 73 Embrayages de direction

(carter) . . . . . . . . . . . . 72 Embrayages de direction

(commande). . . . .. . . . 74 Freins de direction. . . . . . . 78

Btiti et train de roulement

(Page 83)

Barre d'attelage ........... . Barre decrotteuse des chaines .. . Barre pare-branches ...... . Bati de I'appareil

de levage ........... . Bouclier de

. 95

. 108 89

93

protection inferieur . . . . . . .. 84 Cabine (groupe de montage) . . .. 92 Capot et protege-radiateur ..... , 88 Chaines de rou lement ......... 104 Chassis porteurs ............ 101 Contrepoids . . . . . . . . . . . . . .. 95 Contrepoids sur barbotin .... _. 97 Crochet de halage avant .. 83 Galets inferieurs

(boudin double) ... .. 102 Galets inferieurs

(boudin simple). Galets superieurs ..

.•...... 102 . 103

Grilles pour compartiment moteur ..

Groupe d'insonorisation ... 85 86

Designation Page

Groupe de pose pour bati de protection . . 92

Protege-radiateur. . . . . 82 Protege-rad iateu r

sur charnieres . . . . . . . . 83 Roues AV .............. " 98 Roues A V lestees. . . . . . . . . 96 Support (train de roulement) .. " 94 Tendeur hydraulique

(capot protecteur) ......... 100 Tole pare~broussaiHes ....... " 90 Verin de levage (support) . . . . .. 91

Circuit hydraulique . (Page 109)

Canalisations de pompe ....... 133 Commande manuelle .....•. " 114 D istributeu r ................ 118 ~quipement hydraulique .. ; .... 1·13 Pompe a engrenages. . . .. 128 Pompe hydrau I ique

et canalisations . . . . ..... 132 Reservoir hydraulique et filtre ... 109 Retour automatique a I'angle

d'attaque et arret auto-matique de fin de levage ..... 160

Thermom«hre d'huile hydraulique ............. 112

Verin de levage .........•... 152 Verin de levage

(canalisations) ... . Verin d'inclinaison .. . Verin d'inclinaison

(canalisations) .... Verrou de levier

... 141 . . :151

. .140

de commande hydraulique ... 117

Equipement de travail

(Page 163) Canalisations de treuiJ. ............... 184T Carter de treuil et

plaque de protection ........ _ ........ 184J Commande de godet ......•........... 162 Commande de treuil ................. 184X Couteaux lat~raux .................... 171 Embrayage etengrenage (treuil) ....... 184K Godet ~jecteur ....................... 168 Godet normal. ....................... 164 Godet retro .......................... 169 Groupe de montage de treuil ........ 184CC Groupe de transformation

de treuil (petite vitesse) .............. 184E

,.:: ., r

Designation Page

Indicateur de position du godet . . . . . . . . . 163

Pelle retro (groupe de montage) ....... 167

Pelle retro (modele axial) ............ 166

Pelle retro (modele deportable) ........ 165

Pelle retro (ripper) ........... 183 Semelles de stabilisateurs ...... 182

Cabine, instruments de controle et accessoires

(Page 185)"

Avertisseur sonore electrique ... : 209 Bati de protection .... ~ ...... 185 Cabine de protection

ROPS (modulaire) ......... 185

""" Designation Page

Ceinture de securite .......... 207 Horometre electrique ......... 212 Instruments ............... 211 Protection contre

Ie vandalisme ............ 210 Siege a suspension ........... 207 Siege et support ............ 202 Tableau d'instruments ........ 212

Divers (Page 213)

" Caracteristiques ............. 219 Jeux de joints .......... ~ ... 215" Outils a main .... " .......... 213 Plaques signah~tiques et

instructions sur film ........ 216