Bobcat 943 Loader Service Manual 6570008 (6-12) – PDF DOWNLOAD
$28.95
Bobcat 943 Loader Service Manual 6570008 (6-12) – PDF DOWNLOAD
Description
Bobcat 943 Loader Service Manual 6570008 (6-12) – PDF DOWNLOAD
FILE DETAILS:
Bobcat 943 Loader Service Manual 6570008 (6-12) – PDF DOWNLOAD
Language : English
Pages : 372
Downloadable : Yes
File Type : PDF
TABLE OF CONTENTS:
Bobcat 943 Loader Service Manual 6570008 (6-12) – PDF DOWNLOAD
MAINTENANCE SAFETY 3
CONTENTS 5
FOREWORD 7
SERIAL NUMBER LOCATIONS 9
LOADER SERIAL NUMBER 9
ENGINE SERIAL NUMBER 9
DELIVERY REPORT 9
BOBCAT LOADER IDENTIFICATION 10
PREVENTIVE MAINTENANCE 11
SERVICE SCHEDULE 13
LIFTING AND BLOCKING THE BOBCAT LOADER 14
Procedure 14
TRANSPORTING THE BOBCAT LOADER 15
Procedure 15
TOW VALVES 15
Procedure 15
LIFT ARM SUPPORT DEVICE 16
Installing The Lift Arm Support Device 16
OPERATOR CAB 17
Raising The Operator Cab 17
Lowering The Operator Cab 17
Operator Cab Air Seals (S/N 11999 & Below) 18
Cleaning Rear Window, Optional Front Door And Enclosure 19
SEAT BAR SYSTEM 19
Description 19
Inspection Of The Seat Bar System 19
Servicing The Seat Bar System 20
REAR DOOR 21
Opening Rear Door 21
Adjusting The Door Latch 21
REAR GRILL 22
Opening The Rear Grill 22
AIR CLEANER 22
Replacement Of The Air Cleaner Element 22
FUEL SYSTEM 23
Filling The Fuel Tank 23
Removing Water From The Fuel Filter 23
ENGINE OIL AND FILTER 24
Replacement Of Engine Oil And Filter 24
COOLING SYSTEM 25
Checking Coolant Level 25
Removing The Coolant From The Cooling System 25
ELECTRICAL SYSTEM 26
Description 26
Using An Extra Battery (Jump Start) 27
Electrical System Maintenance 26
COLD TEMPERATURE STARTING 28
Starting Procedure 28
HYDRAULIC AND HYDROSTATIC SYSTEM 29
Checking And Adding Fluid 29
Replacing The Hydraulic/Hydrostatic Filters 29
SPARK ARRESTOR MUFFLER 30
Cleaning The Spark Arrestor Muffler 30
Cleaning Exhaust Purifier 30
FINAL DRIVE CHAINCASE 31
TIRE INSPECTION AND ROTATION 31
Procedure 31
Tire Pressure 31
Wheel Nuts 32
LOADER LUBRICATION 32
Lubricating The Loader 32
PIVOT PINS 33
Checking Pivot Pin Retainer Bolts 33
STEERING CONTROL LIMITER 34
Lubricating The Steering Control Limiter 34
REMOTE START SWITCH 34
Procedure 34
HYDRAULIC SYSTEM 35
HYDRAULIC / HYDROSTATIC SCHEMATICS 37
TROUBLESHOOTING 49
HYDRAULIC SYSTEM INFORMATION 50
Flare Connections 50
O–ring Face Seal Connection 50
Straight Thread O–ring Fitting 50
Tubelines And Hoses 50
LIFT CYLINDER 51
Checking The Lift Cylinder(s) 51
Removal And Installation 51
Installation 52
TILT CYLINDER 53
Checking The Tilt Cylinder(s) 53
Removal And Installation 53
Tilt Cylinder Base End Pivot Pin 55
HYDRAULIC CYLINDER REPAIR 56
Disassembly 56
Assembly 58
Base And Rod End Seals 61
JUNCTION PORT BLOCK 62
Removal And Installation 62
QUICK COUPLERS (BRUNING) 63
Disassembly And Assembly 63
HYDRAULIC CONTROL VALVE 67
Removal And Installation 67
Disassembly And Assembly 68
Valve Spool Linkage End O–ring (All Valve Sections) Disassembly And Assembly 70
Lift Section Detent And Spool 71
Front Auxiliary Detent 73
Tilt And Rear Auxiliary Centering Spring 75
Anti–Cavitation Valve 76
Port Relief 77
CHARGE PUMP 78
Removal And Installation 78
Disassembly And Assembly 78
PRE–CHARGE PORT BLOCK (S/N 11999 & Below) 82
Removal And Installation 82
Disassembly And Assembly 83
HYDRAULIC PUMP 84
Removal And Installation 84
Disassembly And Assembly 84
Inspection 89
FAN PORT BLOCK (S/N 11999 & Below) 90
Removal And Installation 90
Disassembly And Assembly 92
FAN MOTOR (S/N 11999 & Below) 95
Removal And Installation 95
Disassembly And Assembly 96
Inspection 98
BUCKET POSITION VALVE (S/N 11999 & Below) 99
Removal And Installation 99
Disassembly And Assembly 99
HYDRAULIC RESERVOIR 101
Removing Fluid From The Reservoir 101
Removal And Installation 101
HYDRAULIC FILTER 102
Removal And Installation 102
Disassembly And Assembly 103
PORT BLOCK (S/N 12001 & Above) 104
Removal And Installation 104
Disassembly And Assembly 106
BUCKET POSITION VALVE (S/N 12001 & Above) 109
Removal And Installation 109
Disassembly And Assembly 110
FAN MOTOR (S/N 12001 & Above) 112
Removal And Installation 112
Disassembly And Assembly 116
HYDROSTATIC SYSTEM 119
TROUBLESHOOTING 121
CONTROL CENTER (S/N 11999 & Below) 122
Removal And Installation 122
LIFT AND TILT PEDALS 124
Removal And Installation 124
Pedal Cable Control Linkage 125
Pedal Lock Linkage 126
Adjustment 126
STEERING LEVERS AND SHAFT (S/N 11999 & Below) 127
Removal And Installation 127
HYDROSTATIC MOTOR 131
Removal And Installation 131
Disassembly And Assembly 132
Inspection 134
HYDROSTATIC PUMP 135
High Pressure And Replenishing Valves 135
Checking The High Pressure Relief Replenishing Valve 135
Checking Charge Relief Pressure 135
Removal And Installation 136
Installation 138
Disassembly And Assembly 141
Inspection 150
Tow Valves 151
Removal And Installation 151
Neutral Adjustment 151
HYDROSTATIC FILTER 155
Removal And Installation 155
Disassembly And Assembly 156
DRIVE BELT 157
Removal And Installation 157
DRIVE BELT TENSION PULLEY 159
Removal And Installation 159
CONTROL CENTER (S/N 12001 & Above) 162
Removal And Installation 162
STEERING LEVERS AND SHAFT (S/N 12001 & Above) 164
Removal And Installation 164
DRIVE SYSTEM 167
PARKING BRAKE 169
Adjustment 169
Removal And Installation 169
Block And Pucks 171
AXLE SEAL AND WEAR RING 173
Removal And Installation 173
FRONT AXLE AND SPROCKET 177
Removal 177
Installation 181
REAR AXLE, SPROCKET AND DRIVE CHAIN 183
Removal 183
Installation 187
DRIVE CHAINS 189
Front Drive Chain Removal And Installation 189
Rear Drive Chains 190
REDUCTION GEARCASE 191
Removal And Installation 191
Disassembly And Assembly 192
CHAINCASE FLUID 196
Removal 196
MAIN FRAME 197
OPERATOR CAB 199
Removal And Installation 199
OPERATOR CAB GAS CYLINDER 201
Removal And Installation 201
SEAT BAR (Without Gas Spring) 202
Removal And Installation 202
Seat Bar Inspection 202
Seat Bar System 202
Seat Bar Maintenance 202
SEAT BAR (With Gas Spring) 203
Removal And Installation 203
REAR GRILL GAS CYLINDER 205
Removal And Installation 205
REAR DOOR 206
Removal And Installation 206
LIFT ARMS 208
Removal And Installation 208
BOB–TACH 210
Removal And Installation 210
Bob–Tach Wedges (S/N 11503 & Below) 211
Bob–Tach Lever (S/N 11503 & Below) 212
Bob–Tach Wedge and Lever (Starting with S/N 11504) 213
FUEL TANKS 215
Fuel Tank Left Side Removal And Installation 215
Fuel Tank Right Side Removal And Installation 217
Fuel Tank Pick Up Hose 218
MAIN FRAME 220
Main Frame Bolts 220
ELECTRICAL SYSTEM 221
ELECTRCAL SCHEMATICS 224
DESCRIPTION 237
TROUBLESHOOTING 237
SEALED ELECTRICAL TERMINAL 238
Removal And Installation 238
BATTERY 239
Checking The Batteries 239
Removal And Installation 239
DELCO ALTERNATOR 240
Alternator Belt Adjustment 240
Checking Alternator Wiring Harness 240
Checking Alternator Output 240
Checking Alternator Regulator 241
Removal And Installation 241
Disassembly And Assembly 242
Assembly 244
MELROE ALTERNATOR 245
Checking The Alternator Output 245
Checking The Alternator Regulator 246
Removal And Installation 247
Disassembly And Assembly 248
STARTER 251
Checking The Starter 251
Removal And Installation 251
Disassembly And Assembly 252
Cleaning And Inspection 253
Replacing The Brushes 253
OPERATOR CAB HARNESS 254
Removal And Installation 254
CHASSIS HARNESS 256
Removal And Installation 256
ENGINE HARNESS 260
Removal And Installation 260
ENGINE SERVICE 263
TROUBLESHOOTING 265
VALVE CLEARANCE 266
Adjustment 266
ENGINE COMPRESSION 267
Checking 267
FUEL FILTER 268
Removal And Installation 268
FUEL LIFT PUMP 269
Checking 269
Removal And Installation 269
REMOVING AIR FROM FUEL SYSTEM 270
Procedure 270
FUEL INJECTION PUMP 271
Removal And Installation 271
ENGINE TIMING TO INJECTION PUMP 274
Procedure 274
CHECKING TIMING MARK ON INJECTION PUMP FLANGE 275
Procedure 275
FUEL INJECTOR NOZZLES 276
Removal And Installation 276
ENGINE 278
Removal And Installation 278
RADIATOR AND OIL COOLER 282
Removal And Installation 282
ENGINE MUFFLER 285
Removal And Installation 285
EXHAUST GAS PURIFIER (Optional) 285
Function 285
Cleaning The Exhaust Gas Purifier 285
ENGINE MOUNTS 286
Removal And Installation 286
ENGINE FLYWHEEL 286
Removal And Installation 286
Flywheel Ring Gear 286
CYLINDER HEAD 287
Removing The Cylinder Head 287
Cylinder Head Surface Alignment 287
Installing The Cylinder Head 287
VALVES 289
Removal Of The Valves 289
Installing The Valves 289
Reconditioning The Valves And Valve Seats 289
Installing Valve Guides 290
Install The Valve Seats 291
Checking The Valve Springs 291
ROCKER ARMS 292
Disassembly 292
Assembly 292
PISTON AND CONNECTING RODS 293
Removal 293
Disassembly 294
Inspection 294
Installation 295
CYLINDER LINERS 297
Removal 297
Installation 297
MAIN BEARINGS 298
Removal 298
Installation 299
Crankshaft End Play 299
CRANKSHAFT 300
Removal 300
Checking 300
Installation 301
REAR MAIN OIL SEAL 302
Removal And Installation 302
TIMING CASE COVER 303
Removal And Installation 303
IDLER GEAR AND HUB 304
Removal And Installation 304
CAMSHAFT GEAR 305
Removal And Installation 305
FUEL INJECTION PUMP GEAR 306
Removal And Installation 306
Installation 306
CRANKSHAFT GEAR 306
Removal 306
TIMING CASE 307
Removal And Installation 307
Installation 307
CAMSHAFT 308
Removal And Installation 308
Inspection 309
Installation 309
WATER PUMP 310
Disassembly Of Water Pump 310
Inspection Of The Water Pump 310
Assembly Of The Water Pump 311
LUBRICATION SYSTEM 312
Description 312
BALANCER UNIT 313
Removal And Installation 313
Engine Timing To Balancer Unit 313
Oil Pump Removal And Installation 314
Oil Pump Inspection 315
Oil Pump Relief Valve 315
Disassembly And Assembly 315
Inspection 317
TECHNICAL DATA 319
LOADER SPECIFICATIONS (S/N 11999 & Below) 321
OPERATION & PERFORMANCE 321
ENGINE 321
HYDRAULIC SYSTEM 322
ELECTRICAL 322
DRIVE SYSTEM 322
CAPACITIES 322
TIRES 322
LOADER SPECIFICATIONS (S/N 12001 & Above) 323
OPERATION & PERFORMANCE 323
ENGINE 323
HYDRAULIC SYSTEM 324
ELECTRICAL 324
DRIVE SYSTEM 324
CAPACITIES 324
TIRES 324
ENGINE SPECIFICATIONS 325
Cylinder Head 325
Valve Guides 325
Exhaust Valves 325
Intake Valves 325
Valve Springs 325
Rocker Arms & Tappets 325
Piston & Piston Rings 326
Connecting Rod, Piston Pin & Bushing 326
Cylinder Block & Liners 326
Crankshaft, Main, Connecting Rod Bearings & Thrust Washer 327
Camshaft & Thrust Washer 327
Timing Case & Timing Gears 328
Oil Pump, Gear & Relief Valve 328
Cooling System & Water Pump 329
Fuel Lift Pump, Injection Pump & Injectors 329
De–Rating For Altitude 329
Balance Unit (Center Mounted) 330
Crankshaft Regrind Data 331
Engine Torque 332
Service Wear Limits 332
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS 333
DECIMAL AND MILLIMETER EQUIVALENTS 334
U S TO METRIC CONVERSION 334
STANDARD TORQUE SPECIFICATIONS FOR BOLTS 335
SERVICE MANUAL REVISIONS 337
943–1 337
943–2 339
943–3 341
943–4 343
943–5 345
943–6 347
943–7 349
943–8 351
943–9 353
943–10 355
943–11 357
943–12 359
943–13 361
943–14 363
943–15 365
943–16 367
943–17 369
943-18 371
DESCRIPTION:
Bobcat 943 Loader Service Manual 6570008 (6-12) – PDF DOWNLOAD
This manual is for the Bobcat loader mechanic. It provides necessary servicing and adjustment procedures for the loader and its component parts and systems. Refer to the Operation & Maintenance Manual for operating instructions, starting procedure, daily checks, etc.
1. Check that the ROPS/FOPS (including sidescreens) is in good condition and is not modified.
2. Check that ROPS mounting hardware is tightened and is Melroe approved.
3. The seat belt must be correctly installed, functional and in good condition.
5. Machine signs must be legible and in the correct location.
6. Steering levers, and foot pedals must return to neutral.
7. Check for correct function of the work lights and travel lights.
8. The parking brake must function correctly.
9. Enclosure door latches must open and close freely.
10. Bob–Tach wedges and linkages must function correctly and be in good condition.
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IMAGES PREVIEW OF THE MANUAL:
PLEASE NOTE:
- This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
- Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.
S.V
