Komatsu WB140-2, WB150-2 Backhoe Loader Shop Manual WEBM004601

Description

• Model List:
  • WB140-2 Backhoe Loader
  • WB150-2 Backhoe Loader

• 1. COVER
• 2. CONTENTS
• 3. SAFETY
• 4. FOREWORD
• 4.1. HOW TO READ THE SHOP MANUAL
• 4.2. HOISTING INSTRUCTIONS
• 4.3. STANDARD TIGHTENING TORQUE
• 4.4. COATING MATERI ALS
• 4.5. ELECTRIC
• 4.6. WEIGHT TABLE
• 4.7. TABLE OF OIL AND COOLANT QUANTITIES
• 4.8. CONVERSION TABLE
• 5. STRUCTURE AND FUNCTION
• 5.1. POWER TRAIN
• 5.2. TRANSMISSION
• 5.3. DRIVE SHAFTS
• 5.4. CONTROL VALVE BLOCK
• 5.5. FRONT AXLE
• 5.6. REAR AXLE
• 5.7. HYDRAULIC PUMP
• 5.8. STEERING UNIT
• 5.9. HYDRAULIC CIRCUIT (WB1402)
• 5.10. HYDRAULIC CIRCUIT (WB1502)
• 5.11. SHOVEL CONTROL VALVE
• 5.12. BACKHOE CONTROL VALVE
• 5.13. CLSS
• 5.14. SOLENOID VALVE
• 5.15. SAFETY VALVE
• 5.16. BRAKE PUMP
• 5.17. SHOVEL CYLINDERS
• 5.18. BACKHOE CYLINDERS
• 5.19. AIRCONDITIONING UNIT
• 5.20. HOW THE AIR CONDITIONING UNIT FUNCTIONS
• 5.21. ELECTRICAL DIAGRAM
• 5.22. ELECTRICAL DIAGRAM (AIR CONDITIONING)
• 6. TESTING AND ADJUSTMENTS
• 6.1. NORMAL OR STANDARD TECHNICAL DATA
• 6.2. SPECIAL TOOLS
• 6.3. MEASURING ENGINE SPEED
• 6.4. ADJUSTING VALVE CLEARANCE
• 6.5. MEASURING COMPRESSION PRESSURE
• 6.6. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 6.7. CHECKING AND TIGHTENING THE FAN BELT
• 6.8. CHECKING AND TIGHTENING THE COMPRESSOR FAN BELT
• 6.9. MEASURING ACCELERATOR PEDAL OPERATING TRAVEL AND ACCELERATOR LEVER
• 6.10. ADJUSTING BRAKE PEDAL TRAVEL, BRAKE ALIGNMENT, MICROSWITCHES
• 6.11. AIR BLEEDING RELEASING RESIDUAL PRESSURE
• 6.12. CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT
• 6.13. TESTING AND ADJUSTING OF LOAD SENSING SIGNAL (LS VALVE)
• 6.14. TESTING AND ADJUSTING OF UNLOADING VALVE
• 6.15. CHECKING UNLOADING VALVE FUNCTIONALITY
• 6.16. TESTING PRIORITY VALVE OPERATION
• 6.17. TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE
• 6.18. TESTING BRAKE SYSTEM
• 6.19. CONTROL OF THE ENGINE SPEED UNDER LOAD
• 6.20. TESTING PRESSURES IN THE POWER TRAIN GROUP
• 6.21. TESTING THE CORRECT FUNCTIONING OF THE POWER TRAIN CLUTCHES
• 6.22. ADJUSTING THE SENSOR FOR RETURN TO DIG DEVICE
• 6.23. ANALYSIS OF CAUSES HYDRAULIC DRIFT
• 6.24. TESTING THE AIR CONDITIONING UNIT
• 6.25. EMPTYING THE AIRCONDITIONING UNIT
• 6.26. TROUBLESHOOTING
• 6.26.1. FRONT AXLE TROUBLESHOOTING
• 6.26.2. REAR AXLE TROUBLESHOOTING
• 6.26.3. TRANSMISSION TROUBLESHOOTING
• 7. REMOVAL AND INSTALLATION
• 7.1. HOW TO READ THE MANUAL
• 7.2. PRECAUTIONS TO BE TAKEN WHILE WORKING
• 7.3. SPECIAL TOOLS
• 7.4. STARTING MOTOR
• 7.4.1. REMOVAL AND INSTALLATION
• 7.5. ALTERNATOR
• 7.5.1. REMOVAL
• 7.5.2. INSTALLATION
• 7.6. AIRCONDITIONING UNIT COMPRESSOR
• 7.7. INJECTION NOZZLES
• 7.7.1. REMOVAL AND INSTALLATION
• 7.8. THERMOSTAT
• 7.8.1. REMOVAL AND INSTALLATION
• 7.9. COOLING LIQUID PUMP
• 7.9.1. REMOVAL
• 7.9.2. INSTALLATION
• 7.10. TURBOCOMPRESSOR
• 7.11. ACCUMULATOR DISCONNECTING SWITCH
• 7.11.1. REMOVAL AND INSTALLATION
• 7.12. FRONT COUNTERWEIGHT
• 7.12.1. REMOVAL AND INSTALLATION
• 7.13. RADIATOR GROUP
• 7.13.1. REMOVAL
• 7.13.2. INSTALLATION
• 7.14. CONDENSER
• 7.14.1. REMOVAL AND INSTALLATION
• 7.15. MUFFLER
• 7.15.1. REMOVAL AND INSTALLATION
• 7.16. EXHAUST PIPE
• 7.16.1. REMOVAL AND INSTALLATION
• 7.17. HEAT AND AIRCONDITIONING GROUP
• 7.17.1. REMOVAL
• 7.17.2. INSTALLATION
• 7.18. FUEL TANK
• 7.18.1. REMOVAL AND INSTALLATION
• 7.19. HYDRAULIC OIL TANK
• 7.19.1. REMOVAL AND INSTALLATION
• 7.20. ENGINEGEARBOXPUMP GROUP
• 7.20.1. DISASSEMBLY AND ASSEMBLY
• 7.21. CONVERTOR
• 7.21.1. REMOVAL AND INSTALLATION
• 7.22. TRANSMISSIONREVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
• 7.22.1. REMOVAL AND INSTALLATION
• 7.23. STEERING UNIT
• 7.23.1. REMOVAL AND INSTALLATION
• 7.24. WORKING BRAKE PUMP GROUP
• 7.24.1. REMOVAL AND INSTALLATION
• 7.25. FRONT WORKING EQUIPMENT CONTROL VALVE
• 7.25.1. REMOVAL AND INSTALLATION
• 7.26. FRONT AND BACKHOE CONTROL VALVE
• 7.26.1. DISASSEMBLY AND ASSEMBLY
• 7.27. FRONT BUCKET BOOMRAISING CYLINDER
• 7.27.1. REMOVAL AND INSTALLATION
• 7.28. FRONT BUCKET TILT CYLINDERS
• 7.28.1. REMOVAL AND INSTALLATION
• 7.29. FRONT BUCKET
• 7.29.1. REMOVAL AND INSTALLATION
• 7.30. FRONT WORKING EQUIPMENT
• 7.30.1. REMOVAL
• 7.30.2. INSTALLATION
• 7.31. BACKHOE CONTROL VALVE
• 7.31.1. REMOVAL
• 7.31.2. INSTALLATION
• 7.32. BACKHOE BOOM CYLINDER
• 7.32.1. REMOVAL AND INSTALLATION
• 7.33. BACKHOE ARM CYLINDER
• 7.33.1. REMOVAL AND INSTALLATION
• 7.34. TELESCOPIC ARM CYLINDER
• 7.34.1. REMOVAL AND INSTALLATION
• 7.35. BACKHOE BUCKET CYLINDER
• 7.35.1. REMOVAL AND INSTALLATION
• 7.36. OUTRIGGER CYLINDERS
• 7.36.1. REMOVAL AND INSTALLATION
• 7.37. BACKHOE SWING CYLINDERS
• 7.37.1. REMOVAL AND INSTALLATION
• 7.38. CYLINDERS
• 7.38.1. DISASSEMBLY
• 7.38.2. ASSEMBLY
• 7.39. BOOM SWING CYLINDER
• 7.39.1. DISASSEMBLY
• 7.39.2. ASSEMBLY
• 7.40. BOOM SAFETY CYLINDER
• 7.40.1. REMOVAL AND INSTALLATION
• 7.41. BACKHOE WORKING EQUIPMENT
• 7.41.1. REMOVAL AND INSTALLATION
• 7.42. BACKHOE BUCKET
• 7.42.1. REMOVAL AND INSTALLATION
• 7.43.1. REMOVAL AND INSTALLATION
• 7.44. TELESCOPIC ARM
• 7.44.1. REMOVAL AND INSTALLATION
• 7.45. d ARM
• 7.45.1. REMOVAL AND INSTALLATION
• 7.46. d ARM GUIDES
• 7.46.1. REMOVAL AND INSTALLATION
• 7.47. BACKHOE BOOM
• 7.47.1. REMOVAL AND INSTALLATION
• 7.48. BACKHOE SWING BRACKET
• 7.48.1. REMOVAL AND INSTALLATION
• 7.49. BACKHOE OUTRIGGERS
• 7.49.1. REMOVAL
• 7.49.2. INSTALLATION
• 8. STANDARD MAINTENANCE
• 8.1. TRANSMISSION
• 8.2. FRONT AXLE
• 8.3. REAR AXLE
• 8.4. HYDRAULIC PUMP
• 8.5. SPOOL CONTROL VALVE
• 8.6. SPOOL CONTROL VALVE
• 8.7. SPOOL CONTROL VALVE
• 8.8. SPOOL CONTROL VALVE
• 8.9. SPOOL CONTROL VALVE
• 8.10. BRAKE PUMP
• 8.11. SHOVEL CYLINDERS
• 8.12. BACKHOE CYLINDERS
• 8.13. FRONT WORKING EQUIPMENT
• 8.14. SWING BRACKET
• 8.15. BACKHOE WORKING EQUIPMENT