Bobcat 751 Skid-Steer Loader Service Manual 6900975 PDF – S/N 515730001 & 515620001 Above

Description

The Bobcat 751 Skid-Steer Loader Service Manual 6900975 PDF – S/N 515730001 & 515620001 Above is a 563-page service reference for the Bobcat 751 loader. It is written for loader mechanics and covers servicing, adjustment, testing, troubleshooting, removal, installation, disassembly and assembly across the machine’s major systems. Coverage includes the Bobcat Interlock Control System (BICS), hydraulic and hydrostatic systems, drive components, main frame, electrical analysis, engine service, heater system and detailed specifications.

File Details

• Manual type: Service Manual
• Brand / model: Bobcat 751 Loader
• Document number: 6900975 (2-06)
• Serial coverage: S/N 515730001 & Above; S/N 515620001 & Above
• Language: English
• Page count: 563 pages
• File format: PDF
• Publication marking: Bobcat Company 2006

Serial Number Coverage and Service Scope

This Bobcat 751 service manual is specifically marked for loaders in the two serial-number sequences shown on the cover. The manual also stresses that serial-number identification matters because early and later machines can use different parts or require different service procedures. Before using a procedure, match the machine to the serial coverage and identify the loader correctly.

The foreword describes the manual as a mechanic’s servicing and adjustment reference for the loader and its component parts and systems. That scope is reflected throughout the book: routine service information sits alongside system troubleshooting, component checks, pressure and electrical tests, removal and installation procedures, internal disassembly and assembly, adjustment data, torque references and machine specifications.

Chapters Covered

• Safety & Maintenance
  • BICS inspection and functional checks
  • Lift arm support, lifting and blocking, towing and transporting
  • Fuel, engine oil, cooling, air cleaner and hydraulic/hydrostatic service
  • Bob-Tach, operator cab, seat bar restraint and tire maintenance
  • Service schedule and lubrication procedures
• Hydraulic System
  • Hydraulic system information and troubleshooting
  • Lift and tilt cylinders
  • Main relief valve and BICS valve
  • Foot-control and Advanced Hand Control hydraulic control valves
  • Hydraulic pump, filter housing and fluid reservoir
  • Bucket position valve, lift arm by-pass valve and front auxiliary pressure relief block
• Hydrostatic System
  • Charge pressure checks and adjustment
  • Hydrostatic motors and hydrostatic pump service
  • Drive belt, oil cooler and control panel
  • Steering linkage, neutral adjustment and Advanced Hand Control steering
  • Hydrostatic troubleshooting and replenishing valve function
• Drive System
  • Brake components and pedal service
  • Chaincase inspection, oil service and cover removal
  • Axle seals, sprockets, bearings and drive chain procedures
• Main Frame
  • Bob-Tach removal, lever, wedge and stop service
  • Fuel tank and fuel level sender
  • Lift arm removal and installation
  • Operator cab and operator seat service
  • Rear door, rear grill and seat bar components
  Complete PDF Bookmark Tree

  Complete Bookmarks

  The complete bookmarks in the “Bobcat 751 Skid-Steer Loader Service Manual 6900975 PDF – S/N 515730001 & 515620001 Above” are as follows:

  MAINTENANCE SAFETYp. 3

  ALPHABETICAL INDEXp. 5

  +CONTENTSp. 7

  FOREWORDp. 8

  +SAFETY INSTRUCTIONSp. 11

  Fire Preventionp. 13

  +SERIAL NUMBER LOCATIONSp. 15

  Loader Serial Numberp. 15

  Engine Serial Numberp. 15

  DELIVERY REPORTp. 15

  LOADER IDENTIFICATIONp. 16

  +SAFETY & MAINTENANCEp. 17

  +BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)p. 19

  Inspecting The BICS™ Controller (Engine STOPPED – Key ON)p. 19

  Inspecting Deactivation Of The Auxiliary Hydraulicsp. 19

  System (Engine STOPPED – Key ON)p. 19

  Inspecting The Seat Bar Sensor (Engine RUNNING)p. 19

  Inspecting The Traction Lock (Engine RUNNING)p. 19

  Inspecting The Lift Arm By-Pass Controlp. 19

  Additional Inspection For Loaders With Advancedp. 19

  Hand Controls (AHC)p. 19

  +LIFTING AND BLOCKING THE LOADERp. 21

  Procedurep. 21

  +TRANSPORTING THE BOBCAT LOADERp. 23

  Procedurep. 23

  +TOWING THE LOADERp. 25

  Procedurep. 25

  +LIFT ARM SUPPORT DEVICEp. 27

  Engaging The Lift Arm Support Devicep. 27

  Disengaging The Lift Arm Support Devicep. 29

  +BOB-TACHp. 31

  Inspection and Maintenancep. 31

  +OPERATOR CABp. 33

  Descriptionp. 33

  Raising The Operator Cabp. 33

  Lowering The Operator Cabp. 34

  Emergency Exitp. 35

  +SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)p. 37

  Descriptionp. 37

  Inspecting the Seat Barp. 37

  Maintaining the Seat Barp. 37

  +SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)p. 39

  Descriptionp. 39

  Inspecting the Seat Barp. 39

  Maintaining the Seat Barp. 39

  +REMOTE STARTp. 41

  Procedurep. 41

  +SERVICE SCHEDULEp. 43

  Chartp. 43

  +FUEL SYSTEMp. 45

  Fuel Specificationsp. 45

  Filling the Fuel Tankp. 45

  Fuel Filterp. 46

  Removing Air From The Fuel Systemp. 47

  +AIR CLEANER SERVICEp. 49

  Checkingp. 49

  +ENGINE LUBRICATION SYSTEMp. 51

  Checking Engine Oilp. 51

  Oil Chartp. 51

  Replacing Oil And Filterp. 51

  +ENGINE COOLING SYSTEMp. 53

  Cleaning The Cooling Systemp. 53

  Checking The Coolant Levelp. 53

  Replacing The Coolantp. 54

  +HYDRAULIC/HYDROSTATIC SYSTEMp. 55

  Checking And Adding Fluidp. 55

  Replacing Hydraulic/Hydrostatic Filterp. 55

  Replacing Hydraulic Fluid and Case Dain Filtersp. 56

  Breather Capp. 57

  +TIRE MAINTENANCEp. 59

  Wheel Nutsp. 59

  Rotatingp. 59

  Mountingp. 59

  +LUBRICATION OF THE BOBCAT LOADERp. 61

  Procedurep. 61

  +HYDRAULIC SYSTEMp. 63

  HYDRAULIC/HYDROSTATIC SCHEMATICSp. 65

  +HYDRAULIC SYSTEM INFORMATIONp. 67

  Tighten Proceduresp. 70

  Troubleshooting Chartp. 71

  +CYLINDER(S)p. 73

  Checking The Lift Cylindersp. 73

  Lift Cylinders Removal And Installationp. 74

  Checking The Tilt Cylinderp. 75

  Tilt Cylinder Removal And Installationp. 76

  Lift Cylinder Identificationp. 78

  Tilt Cylinder Identificationp. 79

  Disassemblyp. 80

  Assemblyp. 82

  +MAIN RELIEF VALVEp. 85

  Checkingp. 85

  Adjustmentp. 86

  Removal and Installationp. 86

  +BICS™ VALVEp. 87

  Removal And Installationp. 87

  Lift Arm By-Pass Orifice Dissembly And Assemblyp. 88

  Check Valve Dissembly And Assemblyp. 89

  Lock Valve Dissembly And Assemblyp. 90

  Solenoid Dissembly And Assemblyp. 91

  Solenoid Testingp. 92

  +HYDRAULIC CONTROL VALVE (FOOT CONTROL)p. 93

  Removal And Installationp. 93

  Identification Chartp. 97

  Load Check Valvep. 98

  Main Relief Valvep. 99

  Port Relief Valvep. 100

  Anti-Cavitation Valvep. 101

  Plugp. 102

  Rubber Bootp. 103

  Lift And Tilt Lock Blockp. 104

  Lift Spool and Detentp. 105

  Tilt Spool Removal And Installationp. 114

  Auxiliary Spool Removal And Installationp. 116

  Auxiliary Electric Solenoid Disassemblyp. 117

  Port-Auxiliary Section Disassemblyp. 118

  Cleaning And Inspectionp. 118

  +HYDRAULIC CONTROL VALVE (AHC)p. 119

  Removal And Installationp. 119

  Actuator Removal And Installationp. 123

  Identification Chartp. 124

  Lift Base End Restrictorp. 125

  Load Check Valvep. 125

  Main Relief Valvep. 126

  Port Relief Valvep. 127

  Anti-Cavitation Valvep. 128

  Plugp. 129

  Lift Spool Removal And Installationp. 130

  Tilt Spool Removal And Installationp. 131

  Lift and Tilt Spool Disassembly And Assemblyp. 132

  Auxiliary Spool Removal And Installationp. 133

  Auxiliary Electric Solenoid Disassemblyp. 134

  Port-Auxiliary Section Disassemblyp. 135

  Cleaning And Inspectionp. 135

  +LIFT ARM BY-PASS CONTROL VALVEp. 137

  Inspectingp. 137

  Additional Inspection For Loaders With Advanced Hand Controlsp. 137

  Removal And Installationp. 137

  Disassembly And Assemblyp. 138

  +HYDRAULIC PUMP (ALUMINUM)p. 139

  Checking The Output Of The Hydraulic Pumpp. 139

  Removal And Installationp. 140

  Parts Identificationp. 142

  Disassembly And Assemblyp. 143

  Inspectionp. 145

  +HYDRAULIC FILTER HOUSINGp. 147

  Removal And Installationp. 147

  +HYDRAULIC FLUID RESERVOIRp. 149

  Removal And Installationp. 149

  +CONTROL PEDALSp. 151

  Removal And Installationp. 151

  Pedal Adjustmentp. 151

  +BUCKET POSITION VALVEp. 153

  Solenoid Removal And Installationp. 153

  Solenoid Testingp. 153

  Removal And Installationp. 154

  Disassembly And Assemblyp. 155

  +FRONT AUXILIARY PRESSURE RELIEF BLOCKp. 157

  Removal And Installationp. 157

  Disassembly And Assemblyp. 158

  Solenoid Testingp. 159

  Solenoid Inspectionp. 159

  +HYDROSTATIC SYSTEMp. 161

  +HYDROSTATIC SYSTEM INFORMATIONp. 163

  Troubleshooting Chartp. 163

  Replenishing Valve Functionp. 164

  +CONTROL PANELp. 165

  Removal and Installationp. 165

  +STEERINGp. 167

  Shock Removal And Installationp. 167

  Steering Shaft Removal And Installationp. 167

  Shaft Disassembly And Assemblyp. 168

  Lever Removal And Installationp. 169

  Rubber Boot Replacementp. 169

  Linkage Removal And Installationp. 170

  Linkage Adjustmentp. 172

  Neutral Adjustmentp. 175

  +STEERING (ADVANCE HAND CONTROL) (AHC)p. 179

  Components Identificationp. 179

  Handle Control Unit Removal And Installationp. 180

  Steering Handle Removal and Installationp. 183

  Steering Handle Disassembly and Assemblyp. 183

  Lever Removal and Installationp. 184

  Steering Lever Bootp. 184

  +STEERING (ADVANCED HAND CONTROL) (AHC) W/ PUSH BUTTON FLOATp. 185

  Components Identificationp. 185

  Handle Sensor Removal And Installationp. 185

  Control Handle Removal And Installationp. 187

  Control Handle Disassembly And Assemblyp. 188

  Control Lever Removal And Installationp. 189

  Control Lever Bootp. 190

  +HYDROSTATIC MOTORp. 191

  Removal And Installationp. 191

  Parts Identificationp. 193

  Disassemblyp. 194

  Assemblyp. 199

  Carrier Shaft Seal Replacementp. 205

  Carrier Removal And Installationp. 207

  +HYDROSTATIC MOTORp. 209

  Carrier Parts Identificationp. 209

  Carrier Disassemblyp. 210

  Carrier Assemblyp. 211

  +CHARGE PRESSUREp. 215

  Sender Removal And Installationp. 215

  Checking Charge Pressurep. 215

  Adjustingp. 216

  +HYDROSTATIC PUMPp. 217

  Replenishing/High Pressure Relief Valvep. 217

  Removal And Installationp. 218

  Parts Identification (Right Half)p. 220

  Parts Identification (Left Half)p. 222

  Hydraulic Pump Removal And Installationp. 224

  Pump Separationp. 225

  Disassemblyp. 226

  Assemblyp. 232

  +DRIVE BELTp. 239

  Shield Removal And Installationp. 239

  Adjustingp. 240

  Drive Belt Replacementp. 241

  Tensioner Pulley Removal And Installationp. 242

  Tensioner Pulley Parts Identificationp. 243

  Tensioner Pulley Disassemblyp. 244

  Tensioner Pulley Assemblyp. 245

  +OIL COOLERp. 247

  Removal and Installationp. 247

  +DRIVE SYSTEMp. 249

  +BRAKEp. 251

  Pedal Removal And Installationp. 251

  Pedal Disassembly And Assemblyp. 251

  Disc Removal And Installationp. 252

  +DRIVE COMPONENTSp. 255

  Axle Seal Removal And Installationp. 255

  Axle Sprocket And Bearings Removal And Installationp. 257

  Chain Removal And Installationp. 262

  +CHAINCASEp. 265

  Checking And Adding Oilp. 265

  Removing The Oilp. 265

  Front Cover Removal And Installationp. 266

  Center Cover Removal And Installationp. 267

  Rear Cover Removal And Installationp. 268

  +MAIN FRAMEp. 269

  +SEAT BARp. 271

  Removal And Installationp. 271

  Assembling Componentsp. 273

  Compression Spring Disassembly And Assemblyp. 275

  +OPERATOR CABp. 277

  Gas Cylinder Removal And Installationp. 277

  Gas Cylinder Disassemblyp. 279

  Removal And Installationp. 280

  +OPERATOR SEATp. 283

  Removal And Installationp. 283

  Slide Rail Removal And Installationp. 284

  Cushion Removal And Installationp. 285

  Back Removal And Installationp. 286

  Shock Removal And Installationp. 287

  +BOB-TACHp. 289

  Removal And Installationp. 289

  Bob-Tach Lever And Wedgep. 291

  Bob-Tach Stopsp. 292

  +LIFT ARMp. 293

  Removal And Installationp. 293

  +REAR GRILLp. 299

  Gas Cylinder Removal And Installationp. 299

  Removal And Installationp. 300

  +REAR DOORp. 301

  Removal And Installationp. 301

  Door Latch And Catch Adjustmentp. 302

  Door Latch Removal And Installationp. 303

  +FUEL TANKp. 305

  Removal And Installationp. 305

  Fuel Level Senderp. 306

  +ELECTRICAL SYSTEM & ANALYSISp. 307

  ELECTRICAL SCHEMATICSp. 312

  +ELECTRICAL SYSTEM INFORMATIONp. 311

  WIRING SCHEMATICSp. 311

  Troubleshooting Chartp. 317

  Descriptionp. 318

  Fuse Locationp. 319

  Relay Switch Locationp. 319

  Solenoid Testp. 320

  +BATTERYp. 322

  Removal And Installationp. 322

  Servicingp. 323

  Using A Booster Battery (Jump Starting)p. 324

  +ALTERNATORp. 326

  Adjusting The Alternator Beltp. 326

  Alternator Output Testp. 326

  Rectifier (Diode) Testp. 327

  Alternator Regulator Testp. 327

  Removal And Installationp. 329

  Disassemblyp. 330

  Stator Continuity Testp. 330

  Stator Ground Testp. 330

  Rotor Continuity Testp. 331

  Rotor Ground Testp. 331

  Rectifier Continuity (Diode) Testp. 331

  Assemblyp. 332

  +STARTERp. 334

  Checkingp. 334

  Removal And Installationp. 334

  Parts Identificationp. 335

  Disassemblyp. 336

  Inspection And Repairp. 341

  No Load Testp. 344

  Assemblyp. 344

  +INSTRUMENT PANELp. 354

  Left Panelp. 354

  Right Panel – (Standard) (With Key Switch)p. 355

  Right Panel – (Deluxe) (With Keyless Start)p. 356

  Right Panel Setup Display Options (Deluxe)p. 358

  Passwordsp. 359

  Option and Field Accessory Panelsp. 361

  Removal And Installationp. 362

  +LIGHTSp. 364

  Front Removal And Installationp. 364

  Rear Removal And Installationp. 365

  +BOBCAT CONTROLLERp. 366

  Identification Chartp. 366

  Removal And Installationp. 367

  +DIAGNOSTICSp. 368

  Service Codesp. 368

  +BICS™ SYSTEMp. 372

  Inspecting The BICS™ Controller (Engine STOPPED – Key ON)p. 372

  Inspecting Deactivation Of The Auxiliary Hydraulicsp. 372

  System (Engine STOPPED – Key ON)p. 372

  Inspecting The Seat Bar Sensor (Engine RUNNING)p. 372

  Inspecting The Traction Lock (Engine RUNNING)p. 372

  Inspecting The Lift Arm By-Pass Controlp. 373

  Additional Inspection For Loaders With Advancedp. 373

  Hand Controls (AHC)p. 373

  Troubleshooting Chartp. 374

  Troubleshooting Guide.p. 375

  +SEAT BAR SENSORp. 376

  Troubleshooting Chartp. 376

  Testp. 377

  Removal And Installationp. 378

  BICS™ Circuit Testp. 379

  +TRACTION LOCKp. 380

  Troubleshooting Chartp. 380

  Inspectingp. 381

  Solenoid Removal And Installationp. 381

  Guide Removalp. 383

  Guide Installationp. 385

  +ADVANCED HAND CONTROL (AHC) SYSTEMp. 388

  Components Identificationp. 388

  +ADVANCED HAND CONTROL (AHC) SYSTEMp. 389

  Troubleshooting Guidep. 389

  Parts Identificationp. 390

  AHC Controller Removal And Installationp. 391

  Handle Control Unit Connectorp. 392

  Switch Handle Removal and Installationp. 393

  Actuators Disassembly and Assemblyp. 396

  ADVANCED HAND CONTROL (AHC) SYSTEMp. 398

  +(W/PUSH BUTTON FLOAT)p. 398

  Components Identificationp. 398

  Troubleshooting Guidep. 399

  Controller Connector And Wire Identificationp. 400

  AHC Controller Removal And Installationp. 401

  Handle Sensor Removal And Installationp. 401

  Handle Sensor Connectorp. 403

  Switch Handle Removal And Installationp. 404

  Actuators Disassembly And Assemblyp. 406

  +ELECTRICAL/HYDRAULIC CONTROLS REFERENCEp. 408

  Controls Identification Chartp. 408

  +ENGINE SERVICEp. 410

  +TROUBLESHOOTINGp. 412

  Chartp. 412

  +ENGINE SPEED CONTROLp. 414

  Removal And Installationp. 414

  Disassemblyp. 414

  +MUFFLERp. 416

  Removal And Installationp. 416

  Spark Arrestor Cleaning Procedurep. 417

  +AIR CLEANERp. 418

  Replacing Filter Element(s)p. 418

  Removal And Installationp. 420

  +RADIATORp. 422

  Removal And Installationp. 422

  +COOLING FANp. 424

  Drive Tension Pulley Removal And Installationp. 424

  Gearbox/Blower Housing Removal And Installationp. 425

  Blower Housing Grill Removal And Installationp. 427

  Blower Disassembly And Assemblyp. 427

  Gearbox Parts Identificationp. 429

  Gearbox Disassemblyp. 430

  Gearbox Assemblyp. 435

  Gearbox Checking Backlashp. 440

  +ENGINE COMPONENTS AND TESTINGp. 444

  Compression Checkingp. 444

  Glow Plugs Checkingp. 445

  Glow Plugs Removal And Installationp. 446

  Fuel Shut-Off Solenoid, Checkingp. 447

  Fuel Shut-Off Solenoid, Adjustingp. 448

  Fuel Shut-Off Solenoid Removal And Installationp. 449

  Checkingp. 450

  Fuel Injection Pump Removal And Installationp. 451

  Timing The Injection Pumpp. 454

  Fuel Injector Removal And Installationp. 456

  Fuel Injector Checkingp. 458

  Fuel Injector Disassemblyp. 458

  Fuel Injector Assemblyp. 459

  Valve Clearance Adjustmentp. 459

  Rocker Arm And Shaft Checkingp. 460

  Valve Timing, Checkingp. 461

  +ENGINEp. 462

  Removal And Installationp. 462

  Engine Mount Replacementp. 468

  +FLYWHEEL AND HOUSINGp. 470

  Flywheel Removal And Installationp. 470

  Ring Gear Removal And Installationp. 471

  Housing Removal And Installationp. 472

  +RECONDITIONING THE ENGINEp. 474

  Cylinder Head Removal And Installationp. 474

  Cylinder Head Disassembly And Assemblyp. 475

  Cylinder Head Servicingp. 476

  Cylinder Head Top Clearancep. 476

  Checking The Valve Guidep. 477

  Reconditioning The Valve And Valve Seatp. 478

  Valve Springp. 479

  Rocker Arm And Shaft Checkingp. 480

  Timing Gearcase Cover Removal And Installationp. 481

  Idler Gear And Camshaft Removal And Installationp. 483

  Servicing The Camshaftp. 484

  Servicing The Idler Gear And Shaftp. 485

  Timing Gears Checking Backlashp. 486

  Fuel Camshaft Removal And Installationp. 487

  Fuel Camshaft Governorp. 487

  Crankshaft Gear Removal And Installationp. 488

  Oil Pump Removal And Installationp. 488

  Oil Pump Servicep. 488

  Checking Engine Oil Pressurep. 489

  Relief Valvep. 490

  Piston And Connecting Rod Removal And Installationp. 490

  Servicing The Piston And Connecting Rodp. 492

  Connecting Rod Alignmentp. 494

  Crankshaft And Bearings Removal And Installationp. 495

  Servicing The Crankshaft And Bearingsp. 496

  Checking The Cylinder Borep. 500

  Water Pump Disassembly And Assemblyp. 501

  +HEATERp. 502

  +COMPONENTSp. 504

  Identificationp. 504

  +REGULAR MAINTENANCEp. 506

  Filter Elements Removal And Installationp. 506

  +BASIC TROUBLESHOOTINGp. 510

  Cleaning The Heater Coilp. 510

  Checking The Electrical Systemp. 512

  Engine Coolant By-Passing The Heater Valvep. 517

  Heater Valve Not Opening Or Closingp. 517

  +SYSTEM TROUBLESHOOTING CHARTp. 520

  Blower Motor Does Not Operatep. 520

  Blower motor operators normally, but air flow is insufficientp. 520

  +HEATER UNITp. 522

  Removal And Installationp. 522

  Disassembly And Assemblyp. 523

  +HEATER COILp. 524

  Removal And Installationp. 524

  +HEATER FANp. 526

  Removal And Installationp. 526

  Disassembly And Assemblyp. 527

  Wire Connector Removal and Installationp. 529

  +HEATER VALVEp. 532

  Removal and Installationp. 532

  Disassembly And Assemblyp. 533

  +SPECIFICATIONSp. 534

  +LOADER SPECIFICATIONSp. 536

  Specificationsp. 536

  Performancep. 536

  Controlsp. 536

  Enginep. 537

  Hydraulic Systemp. 537

  Electricalp. 538

  Drive Systemp. 538

  Capacitiesp. 538

  Tiresp. 538

  Floor Pressurep. 538

  +ENGINE SPECIFICATIONSp. 540

  Fuel Injection Nozzlesp. 540

  Fuel Injection Pumpp. 540

  Cylinder Headp. 540

  Valvesp. 540

  Valve Springsp. 541

  Valve Timingp. 541

  Rocker Armsp. 541

  Camshaftp. 541

  Tappetp. 541

  Cylindersp. 542

  Piston Ringsp. 542

  Pistonsp. 542

  Connecting Rodp. 542

  Oil Pumpp. 542

  Crankshaftp. 543

  Timing Gearp. 543

  Thermostatp. 543

  Crankshaft Re-Grind Datap. 544

  +LOADER TORQUEp. 546

  Specificationsp. 546

  +TORQUE SPECIFICATIONS FOR BOLTSp. 548

  Torque for General SAE Boltsp. 548

  Torque For General Metric Boltsp. 549

  +HYDRAULIC CONNECTION SPECIFICATIONSp. 550

  O-ring Face Seal Connectionp. 550

  Straight Thread O-ring Fittingp. 550

  Tubelines And Hosesp. 550

  Flare Fittingp. 551

  O-ring Flare Fittingp. 552

  Port Seal Fittingp. 554

  +HYDRAULIC FLUID SPECIFICATIONSp. 556

  Specificationsp. 556

  +CONVERSIONSp. 558

  Decimal And Millimeter Equivalentsp. 558

  U.S. To Metric Conversionp. 559

  +SMRp. 560

  Revision No: 751-1p. 560

  Revision No: 751-2p. 562

• Electrical System & Analysis
  • Advanced Hand Control systems and troubleshooting
  • Alternator and battery testing and service
  • BICS system inspection, circuit checks and troubleshooting
  • Bobcat controller, diagnostics and service codes
  • Electrical system information and wiring schematics
  • Instrument panels, lights, seat bar sensor, starter and traction lock
• Engine Service
  • Air cleaner, cooling fan, radiator and muffler
  • Engine removal and installation
  • Engine components, compression checks and fuel-system testing
  • Fuel injection pump, injectors, glow plugs and valve clearance
  • Flywheel and housing service
  • Engine reconditioning, including cylinder head, pistons, connecting rods, crankshaft, camshaft, timing gears, oil pump and water pump
  • Engine troubleshooting
• Heater
  • Heater components and regular maintenance
  • Heater unit, coil, fan and valve service
  • Electrical checks and heater-system troubleshooting
• Specifications
  • Loader performance, controls and machine data
  • Engine and hydraulic specifications
  • Electrical, drive-system and capacity data
  • Engine component service specifications
  • Loader torque and general bolt torque specifications
  • Hydraulic connection and hydraulic fluid specifications
  • U.S. and metric conversions

Taken together, these chapters give a technician a system-by-system path from inspection and diagnosis to component repair and reassembly. The manual does not stop at overview information: many sections identify test equipment, special tools, test points, pressure values, tightening torques, electrical resistance checks, adjustment procedures and the sequence required to remove and reinstall assemblies.

Hydraulic, Hydrostatic and Drive Repair Coverage

The hydraulic material is one of the deepest parts of this Bobcat 751 Skid-Steer Loader Service Manual 6900975. It covers lift and tilt cylinders, the BICS valve, main and port relief valves, bucket position valve, control pedals, hydraulic control valves for foot control and AHC configurations, the hydraulic pump, reservoir, filters and auxiliary pressure components. Cylinder sections include checking, removal, internal disassembly, seal installation and assembly procedures. Hydraulic control-valve sections go into spools, check valves, solenoids, anti-cavitation valves, relief valves and cleaning/inspection steps.

A hydraulic/hydrostatic schematic is included, along with pressure and flow information used during diagnosis. The manual gives a main system relief specification of 2500-2600 PSI and includes procedures for checking relief pressure and hydraulic pump output. Hydrostatic coverage extends to charge pressure, hydrostatic motors, the hydrostatic pump, steering adjustment, drive belt service and troubleshooting. The drive-system chapter then continues into brakes, chaincase service, axles, sprockets, bearings and chains.

Electrical Controls, BICS and Diagnostics

Electrical coverage is built around real service checks rather than only component location. The manual includes wiring schematics, fuse and relay locations, solenoid tests, service codes and troubleshooting charts. BICS procedures cover controller inspection, auxiliary-hydraulic deactivation, seat bar sensing, traction lock operation and lift arm by-pass control. Separate material addresses Advanced Hand Control systems, including controller and actuator work, handle components and troubleshooting.

The alternator section includes output and regulator tests plus internal checks such as rectifier, rotor and stator testing. Battery service, starter testing and repair, instrument panels, lights, seat bar sensor and traction lock are also covered. For electrical or electro-hydraulic faults on a covered Bobcat 751, these sections help narrow a symptom to a circuit, controller, sensor, solenoid or mechanical component before parts are removed.

Engine Service and Specification Data

The loader specification section identifies the engine as Kubota/V1903-B, a four-cylinder diesel with liquid cooling. The manual provides engine service procedures for compression testing, fuel injection components, glow plugs, valve clearance, injection timing, cooling components and complete engine removal. Its reconditioning material reaches into cylinder-head work, valve and valve-seat service, pistons and connecting rods, crankshaft and bearings, camshaft and timing gears, oil pump and water pump procedures.

Service data is consolidated in the specification chapters so repair procedures can be checked against the required values. The book includes loader performance figures, hydraulic pressures and flow data, cylinder dimensions, electrical information, fluid capacities, engine specifications, torque data and hydraulic fitting specifications. Maintenance sections also provide service intervals for engine oil and filters, fuel filtration, hydraulic/hydrostatic filters and fluid, chaincase fluid, lubrication points, tires and safety-system inspections.

Get the Bobcat 751 Service Information You Need

The Bobcat 751 Skid-Steer Loader Service Manual 6900975 PDF – S/N 515730001 & 515620001 Above supports detailed maintenance, diagnosis, adjustment and repair work on covered 751 loaders, from scheduled service and BICS checks to hydraulic component repair, hydrostatic diagnosis, electrical testing and engine reconditioning. Using the specified procedures, test values, torque data and system diagrams matters when a repair needs to be completed in the correct sequence and checked against the machine’s service information.

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