Bobcat 751 Loader Service Manual 6724925 (6-12) – PDF DOWNLOAD

Description

Bobcat 751 Loader Service Manual 6724925 (6-12) – PDF DOWNLOAD

FILE DETAILS:

Bobcat 751 Loader Service Manual 6724925 (6-12) – PDF DOWNLOAD

Language : English
Pages : 440
Downloadable : Yes
File Type : PDF

TABLE OF CONTENTS:

Bobcat 751 Loader Service Manual 6724925 (6-12) – PDF DOWNLOAD

MAINTENANCE SAFETY 3
ALPHABETICAL INDEX 5
CONTENTS 7
FOREWORD 8
SAFETY INSTRUCTIONS 11
SERIAL NUMBER LOCATIONS 13
LOADER SERIAL NUMBER 13
ENGINE SERIAL NUMBER 13
DELIVERY REPORT 13
BOBCAT LOADER IDENTIFICATION 14
PREVENTIVE MAINTENANCE 15
SERVICE SCHEDULE 17
LIFTING AND BLOCKING THE LOADER 18
Procedure 18
TRANSPORTING THE LOADER 19
Procedure 19
TOWING THE LOADER 19
Procedure 19
STOPPING THE BOBCAT LOADER 19
LIFTING THE LOADER 20
Four Point Lift 20
Single Point Lift 20
LIFT ARM SUPPORT DEVICE 21
Engaging The Lift Arm Support Device 21
Disengaging The Lift Arm Support Device 21
OPERATOR CAB 22
Description 22
Raising The Operator Cab 22
Lowering The Operator Cab 24
Emergency Exit 25
SEAT BAR RESTRAINT SYSTEM 26
Description (Foot Pedals) 26
Seat Bar Inspection (Foot Pedals) 26
Seat Bar Maintenance (Foot Pedals) 26
Description (Hand Controls) 27
Seat Bar Inspection (Hand Controls) 27
Seat Bar Maintenance (Hand Controls) 27
AIR CLEANER SERVICE 28
Replacing Filter Element 28
FUEL SYSTEM 29
Fuel Specifications 29
Filling the Fuel Tank 29
Fuel Filter 29
Removing Air From The Fuel System 30
ENGINE LUBRICATION SYSTEM 31
Checking Engine Oil 31
Replacing Oil and Filter 31
ENGINE COOLING SYSTEM 33
Cleaning the Cooling System 33
Checking the Coolant Level 33
Replacing The Coolant 34
Propylene Glycol 34
ALTERNATOR BELT 35
Adjusting The Alternator Belt 35
BOB–TACH 35
FAN GEARBOX 35
Checking And Maintaining 35
HYDRAULIC/HYDROSTATIC SYSTEM 36
Checking And Adding Fluid 36
Replacing Hydraulic/Hydrostatic Filter 36
Replacing Hydraulic Fluid 37
Hydraulic Reservoir Breather Cap 38
SPARK ARRESTOR MUFFLER 39
Cleaning Procedure 39
TIRE MAINTENANCE 40
Wheel Nuts 40
Tire Rotation 40
Tire Mounting 40
FINAL DRIVE TRANSMISSION (CHAINCASE) 41
Checking and Adding Oil 41
Removing Oil From the Chaincase 41
DRIVE BELT 42
Adjusting The Drive Belt Equipped With The Fixed Drive Idler 42
Adjusting The Drive Belt Equipped With The Spring Loaded Drive Ider 44
Drive Belt Replacement 46
LUBRICATION OF THE BOBCAT LOADER 47
Procedure 47
PIVOT PINS 48
REMOTE START SWITCH 49
Procedure 49
HYDRAULIC SYSTEM 51
HYDRAULIC / HYDROSTATIC SCHEMATICS 55
TROUBLESHOOTING 57
HYDRAULIC SYSTEM INFORMATION 58
Flare Connections 58
O–ring Face Seal Connection 58
Straight Thread O–ring Fitting 58
Tubelines And Hoses 58
LIFT CYLINDER(S) 59
Checking The Lift Cylinder(s) For Internal Leakage 59
Removal And Installation 59
TILT CYLINDER 60
Checking The Tilt Cylinder For Internal Leakage 60
Removal And Installation 60
Rod End Seal Replacement 61
HYDRAULIC CYLINDER IDENTIFICATION 62
Lift Cylinder Components 62
Tilt Cylinder Components 63
HYDRAULIC CYLINDERS 64
Disassembly 64
Assembly 66
BICS™ VALVE (S/N 514713000 & Above, S/N 514911453 & Above) 72
Removal 72
Lift Arm By–Pass Orifice 73
Disassembly 73
Check Valve 73
Disassembly 73
Lock Valve 74
Disassembly 74
BICS™ Valve Solenoid 75
Disassembly 75
Assembly 76
Lock Valve 77
Assembly 77
Check Valve 77
Assembly 77
Lift Arm By–Pass Orifice 78
Assembly 78
Installation 79
CONTROL VALVE (S/N 514713000 & Above, S/N 514911453 & Above) 80
Removal And Installation 80
Identification Chart 83
Disassembly 84
Lift Base End Restrictor Disassembly 84
Load Check Valve Disassembly 84
Main Relief Valve Disassembly 85
Port Relief Valve Disassembly 86
Anti–Cavitation Disassembly 87
Rubber Boot Disassembly 88
Lift Spool And Detent Disassembly 89
Tilt Spool And Centering Spring Disassembly 92
Auxiliary Spool Disassembly 94
Auxiliary Electric Solenoid Disassembly 95
Port–Auxiliary Section Disassembly 96
Cleaning and Inspection 96
Port–Auxiliary Section Assembly 97
Auxiliary Electric Solenoid Assembly 97
Auxiliary Spool Assembly 98
Tilt Spool And Centering Spring Assembly 99
Lift Spool And Detent Assembly 101
Rubber Boot Assembly 103
Anti–Cavitation/Port Relief Valve Assembly 104
Port Relief Valve Assembly 105
Main Relief Valve Assembly 106
Load Check Valve Assembly 106
Spool Seal Installation 108
CONTROL VALVE (S/N 514712999 & Below, S/N 514911452 & Below) 109
Removal And Installation 109
Checking The Main Relief Valve 112
Main Relief Valve Adjustment 113
Main Relief Valve Removal and Installation 113
Identification Chart 114
Disassembly And Assembly 115
Load Check Valve 115
Main Relief Valve 116
Port Relief Valve 116
Anti–Cavitation Valve 117
Rubber Boot 118
Lift Spool Detent 119
Tilt Centering Spring 123
Auxiliary Spool 124
Auxiliary Electric Solenoid 125
Inspection 126
Identification And Installation Of Spool Seal 127
HYDRAULIC PUMP 128
Removal And Installation 128
Checking The Output Of The Hydraulic Pump 130
Disassembly And Assembly 132
Inspection 134
Identification 134
HYDRAULIC FILTER HOUSING 135
Removal And Installation 135
HYDRAULIC FLUID RESERVOIR 136
Removal And Installation 136
CONTROL PEDALS 137
Removal And Installation 137
Pedal Adjustment 137
PEDAL INTERLOCK LINKAGE 138
Removal And Installation 138
Adjustment 139
HYDROSTATIC SYSTEM 141
TROUBLESHOOTING 143
Chart 143
HYDROSTATIC SYSTEM INFORMATION 144
Replenishing Valve Function 144
Checking Charge Pressure 144
CONTROL PANEL 145
Rubber Boot Replacement 147
Removal and Installation 145
Steering Shaft Removal and Installation 146
Steering Shaft Disassembly and Assembly 146
Steering Lever Removal and Installation 147
STEERING LINKAGE 148
Removal and Installation 148
Steering Linkage Adjustment 150
Steering Neutral Adjustment 152
HYDROSTATIC DRIVE MOTOR 154
Removal And Installation 154
Identification 155
Disassembly And Assembly 156
Inspection 160
HYDROSTATIC PUMP 161
Removal And Installation 161
Identification 164
Disassembly And Assembly 166
Inspection 174
Swashplate Pre–Load 176
DRIVE BELT HOUSING 177
Removal And Installation 177
SPRING LOADED DRIVE BELT TENSIONER PULLEY 178
Removal And Installation 178
Identification 179
Disassembly 180
Assembly 181
FIXED DRIVE BELT TENSIONER PULLEY 183
Removal And Installation 183
Identification 184
Disassembly 185
Assembly 187
Checking Pulley End Play 191
OIL COOLER 191
Removal and Installation 191
DRIVE SYSTEM 193
PARKING BRAKE 195
Removal And Installation 195
Disassembly And Assembly 195
PARKING BRAKE DISC 196
Removal And Installation 196
TRACTION LOCK GUIDES 197
Disassembly 197
Assembly 198
CHAINCASE FLUID 200
Removing Oil From The Chaincase 200
CHAINCASE COVERS 201
Center Chaincase Cover Removal And Installation 201
Front Chaincase Cover Removal And Installation 202
Rear Chaincase Cover Removal And Installation 202
MOTOR CARRIER 203
Shaft Seal Replacement 203
Removal And Installation 205
Disassembly 206
Assembly 207
AXLE SEAL 211
Removal and Installation 211
AXLE, SPROCKET AND BEARINGS 213
Removal And Installation 213
DRIVE CHAIN 217
Removal And Installation 217
MAIN FRAME 219
SEAT BAR (W/GAS CYLINDER) 221
Removal And Installation 221
Assembly 223
Compressing The Gas Cylinder 224
SEAT BAR (W/COMPRESSION SPRINGS) 225
Removal And Installation 225
Assembling Components 228
Compression Spring Disassembly And Assembly 228
OPERATOR CAB GAS CYLINDER 229
Removal And Installation 229
Disassembly And Assembly 229
OPERATOR CAB 230
Removal And Installation 230
OPERATOR SEAT 233
Removal And Installation 233
BOB–TACH 234
Removal And Installation 234
Bob–Tach Lever And Wedge 236
Bob–Tach Stops 237
LIFT ARMS 238
Removal And Installation 238
REAR GRILL 242
Removal And Installation 242
FUEL TANK 243
Removal And Installation 243
Fuel Level Sender 244
REAR DOOR 245
Removal And Installation 245
Hood Removal And Installation 246
Bumper Removal And Installation 246
Door Latch Removal And Installation 246
Door Latch And Catch Adjustment 247
ELECTRICAL SYSTEM 249
ELECTRICAL SCHEMATICS 251
TROUBLESHOOTING 277
Chart 277
ELECTRICAL SYSTEM INFORMATION 278
Description 278
Fuse Location 278
BATTERY 279
Removal And Installation 279
Servicing The Battery 280
Using A Booster Battery (Jump Starting) 281
ALTERNATOR 282
Alternator Output Test 282
Rectifier (Diode) Test 282
Alternator Regulator Test 283
Removal And Installation 284
Adjusting The Alternator Belt 284
Disassembly And Inspection 285
Stator Continuity Test 285
Stator Ground Test 285
Rotor Continuity Test 286
Rotor Ground Test 286
Rectifier Continuity (Diode) Test 286
Assembly 287
STARTER 288
Removal And Installation (228000–5210) 288
Removal And Installation (228000–5740) 288
Parts Identification (228000-5210) 289
Disassembly (228000-5210) 290
Inspection And Repair (228000-5210) 295
No Load Test (228000-5210) 298
Assembly (228000-5210) 298
Parts Identification (228000-5740) 305
Disassembly (228000–5740) 306
Inspection And Repair (228000–5740) 311
No Load Test (228000–5740) 314
Assembly (228000–5740) 315
STANDARD INSTRUMENT PANEL 322
Removal And Installation 322
FRONT LIGHTS 323
Removal And Installation 323
RELAY SWITCHES 324
Location 324
Glow Plug Preheat Relay 324
Glow System In Operator Cab 324
Troubleshooting The Glow Plug System 324
Testing The Glow Plug Timer Relay 325
ENGINE SERVICE 327
TROUBLESHOOTING 329
Chart 329
ENGINE SPEED CONTROL 330
Removal And Installation 330
Disassembly 330
RADIATOR 331
Removal And Installation 331
ENGINE MUFFLER 332
Removal And Installation 332
BLOWER HOUSING/FAN GEARBOX 333
Removal And Installation 333
Tension Pulley Removal And Installation 336
Blower Fan Disassembly And Assembly 337
FAN GEARBOX 339
Disassembly 339
Long Housing 339
Short Housing 341
Assembly 344
Long Housing 344
Short Housing 346
Checking Backlash 349
Identification 352
AIR CLEANER 353
Removal And Installation 353
ENGINE 354
Removal And Installation 354
Engine Mount Replacement 359
FLYWHEEL 360
Removal And Installation 360
Flywheel Ring Gear 360
INJECTION PUMP TIMING 361
Checking Procedure 361
Adjusting Injection Pump Timing 362
Injection Pump Return Fitting 362
Testing The Fuel Solenoid 363
Idle Speed Setting 364
TIMING BELT 365
Removal 365
Installation 367
FUEL INJECTION PUMP 368
Removal 368
Installation 369
FUEL INJECTOR NOZZLE 370
Removal And Installation 370
Checking The Injector Nozzle 371
CYLINDER LOCATION & COMPRESSION 371
Data 371
GLOW PLUGS 372
Removal And Installation 372
Checking The Glow Plugs 372
CYLINDER HEAD 373
Removing The Cylinder Head 373
Disassembly Of The Cylinder Head 375
Removing The Combustion Chamber 376
Removing The Heat Shield 376
Installing The Heat Shield 376
Servicing The Cylinder Head 377
Checking The Valves 378
Checking The Valve Springs 378
Checking The Valve Guides 379
Checking The Valve Seats 379
Checking The Combustion Chamber 380
Reassembly Of The Cylinder Head 381
Installing The Cylinder Head 384
ENGINE BLOCK 387
Disassembly Of The Engine 387
Assembly Of The Engine 389
PISTONS AND CONNECTING RODS 393
Disassembly And Assembly 393
Checking The Piston 393
Checking The Crankshaft 394
CRANKSHAFT PULLEY 395
Removal And Installation 395
POSITIVE CRANKCASE VENTILATION VALVE 395
Removal 395
Installation 395
PEUGEOT ENGINE TOOL KIT MEL1474 (Complete Kit) 396
PEUGEOT ENGINE 398
Chart 398
SYSTEMS ANALYSIS 399
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™) 401
Inspecting The BICS Controller (Engine STOPPED –Key ON) 401
Inspecting DeactivationOf The Auxiliary Hydraulics System (Engine STOPPED–Key ON) 401
Inspecting The Seat And Seat Bar Sensors (EngineRUNNING) 401
Inspecting The Traction Lock (Engine RUNNING) 401
Inspecting The Lift Arm By–Pass Control 401
Maintenance 402
Troubleshooting Chart 403
Troubleshoot Guide 404
BICS CONTROLLER 404
TRACTION LOCK 405
SEAT SENSOR 406
SEAT BAR SENSOR 407
LIFT LOCK BY–PASS VALVE 408
BICS™ SYSTEM CONTROLLER 409
Removal And Installation 409
Controller Test 410
SEAT BAR SENSOR 411
Removal And Installation 411
Seat Bar Sensor Test 412
SEAT SENSOR 413
Removal And Installation 413
Seat Sensor Test 414
TRACTION LOCK 415
Removal And Installation 415
LIFT LOCK BY–PASS VALVE 417
Removal And Installation (S/N 514712999 & Below,S/N 514911452 & Below) 417
Disassembly and Assembly (S/N 514712999 & Below, S/N 514911452 & Below) 418
Removal And Installation (S/N 514713000 & Above, S/N 514911453 & Above) 419
Disassembly And Assembly (S/N 514713000 & Above, S/N 514911453 & Above) 420
TILT LOCK VALVE 421
Removal And Installation (S/N 514712999 & Below, S/N 514911452 & Below) 421
Disassembly And Assembly (S/N 514712999 & Below, S/N 514911452 & Below) 423
SPECIFICATIONS 425
SKID STEER LOADER SPECIFICATIONS 427
PERFORMANCE 427
CONTROLS 427
ENGINE 427
HYDRAULIC SYSTEM 428
ELECTRICAL 428
DRIVE SYSTEM 428
CAPACITIES 428
TIRES 428
FLOOR PRESSURE 428
VIBRATION DATA 428
ENGINE SPECIFICATIONS 429
Fuel Injection Nozzles 429
Fuel Injection Pump 429
Cylinder Head 429
Valves 429
Valve Springs 430
Valve Guides 430
Combustion Chamber 430
Cylinders 430
Piston Rings 430
Pistons 430
Connecting Rod 431
Crankshaft 431
TORQUE SPECIFICATIONS FOR LOADER 432
Specifications 432
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS 434
Specifications 434
STANDARD TORQUE SPECIFICATIONS FOR BOLTS 435
DECIMAL AND MILLIMETER EQUIVALENTS 436
U S TO METRIC CONVERSION 436
SERVICE MANUAL REVISIONS 437
751-001 437
751-002 439

DESCRIPTION:

Bobcat 751 Loader Service Manual 6724925 (6-12) – PDF DOWNLOAD

(S/N 514711001 & Above)
(S/N 514911001 & Above)

FOREWORD:

This manual is for the Bobcat loader mechanic. It provides necessary servicing and adjustment procedures for the Bobcat loader and its component parts and systems. Refer to the Operation & Maintenance Manual for operating instructions, starting procedure, daily checks, etc.

SAFETY INSTRUCTIONS:

The following publications provide information on the safe use and maintenance of the loader and attachments:
• The Delivery Report is used to assure that complete instructions have been given to the new owner and that the machine
is in safe operating condition.
• The Operation & Maintenance Manual delivered with the loader gives operating information as well as routin e
maintenance and service procedures. It is a part of the loader and must stay with the machine when it is sold. Replacement
Operation & Maintenance Manuals can be ordered from your Bobcat loader dealer.
• The loader has machine signs (decals) which instruct on the safe operation and care. The signs and their locations are
shown in the Operation & Maintenance Manual. Replacement signs are available from your Bobcat loader dealer.
• The loader has a plastic Operator’s Handbook fastened to the operator cab. Its brief instructions are convenient to the
operator. The handbook is available from your dealer in English edition or French, German, Italian, Dutch & Spanish
Portuguese, Finnish, Danish & Swedish.
• The EMI Safety Manual (available in Spanish) delivered with the loader gives general safety information.
• The Service Manual and Parts Manual are available from your dealer for use by mechanics to do shop–type service and
repair work.
• The Skid–Steer Loader Operator Training Course is available through your local Bobcat dealer. This course is intended
to provide rules and practices for correct operation of the Bobcat loader. The course is available in English and Spanish
versions.
• The Bobcat Skid–Steer Loader Safety Video is available from your Bobcat Dealer.

Need help? Contact: [email protected]

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PLEASE NOTE:

• This is the same manual used by the DEALERSHIPS to SERVICE your vehicle.
• The manual can be all yours – Once payment is complete, you will be taken to the download page from where you can download the manual. All in 2-5 minutes time!!
• Need any other service / repair / parts manual, please feel free to contact us at heydownloadss @gmail.com . We may surprise you with a nice offer

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