Komatsu WB140PS-2N, WB150PS-2N Backhoe Loader Shop Manual CEBM011100

Description

• Model List:
  • WB140PS-2N Backhoe Loader
  • WB150PS-2N Backhoe Loader

• 0.1. GENERAL
• 0.2. HOW TO READ THE SHOP MANUAL
• 0.2.1. VOLUMES
• 0.2.2. DISTRIBUTION AND UPDATING
• 0.2.3. FILING METHOD
• 0.2.4. REVISED EDITION MARK
• 0.2.5. REVISIONS
• 0.2.6. SYMBOLS
• 0.3. HOISTING INSTRUCTIONS
• 0.3.1. HOISTING
• 0.3.2. WIRE ROPES
• 0.4. COATING MATERIALS
• 0.5. STANDARD TIGHTENING TORQUE
• 0.5.1. STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS
• 0.5.2. TIGHTENING TORQUE OF HOSE NUTS
• 0.5.3. TIGHTENING TORQUE OF SPLIT FLANGE BOLTS
• 0.5.4. TIGHTENING TORQUE FOR FLARED NUTS
• 0.6. ELECTRIC WIRE CODE
• 0.6.1. CLASSIFICATION BY THICKNESS
• 0.6.2. CLASSIFICATION BY COLOR AND CODE
• 0.7. CONVERSION TABLES
• 0.7.1. METHOD OF USING THE CONVERSION TABLE
• 1. STRUCTURE AND FUNCTION
• 1.1. POWER TRAIN
• 1.2. TRANSMISSION
• 1.2.1. DIAGRAM OF THE POWER TRAIN
• 1.2.2. HYDRAULIC CONVERTERTRANSMISSION CIRCUIT DIAGRAM
• 1.3. TRANSMISSION
• 1.4. DRIVE SHAFTS
• 1.4.1. DRIVE SHAFT FOR FORWARD AND REVERSE MOVEMENT
• 1.4.2. DRIVE SHAFT
• 1.4.3. DRIVEN GEAR SHAFT
• 1.4.4. DRIVEN SHAFT 4WD
• 1.5. CONTROL VALVE BLOCK
• 1.5.1. FRONT AXLE
• 1.5.2. FINALREDUCTIONJOINT
• 1.5.3. STEERING CYLINDER
• 1.6. REAR AXLE
• 1.6.1. DIFFERENTIAL
• 1.6.2. FINAL REDUCTION
• 1.6.3. BRAKES
• 1.6.4. DIFFERENTIAL LOCKING
• 1.6.5. PC VALVE, LS VALVE, SERVO PISTON
• 1.6.6. WORKING MODE SOLENOID VALVE
• 1.7. STEERING UNIT
• 1.7.1. TECHNICAL DATA
• 1.7.2. OPERATION
• 1.8. HYDRAULIC CIRCUIT
• 1.9. SHOVEL CONTROL VALVE
• 1.9.1. SPOOL
• 1.9.2. SPOOL
• 1.10. BACKHOE CONTROL VALVE
• 1.10.1. SPOOL
• 1.10.2. SPOOL
• 1.10.3. SPOOL
• 1.11. CLSS (CLOSED CENTER LOAD SENSING SYSTEM)
• 1.11.1. DESCRIPTION
• 1.11.2. UNLOADING VALVE
• 1.11.3. INTRODUCTION OF THE LS PRESSURE
• 1.11.4. DELIVERY COMPENSATION
• 1.11.5. LIFD CONTROL SYSTEM
• 1.11.6. LS DECOMPRESSION VALVE
• 1.11.7. PRESSURE CUTOFF VALVE
• 1.11.8. PRIORITY VALVE (ONLY FOR THE 23SPOOL CONTROL VALVE)
• 1.12. SOLENOID VALVE
• 1.12.1. SOLENOID VALVE BLOCK ST1 DIFFERENTIAL LOCKING BACKHOE BOOM LOCKING.
• 1.13. SAFETY VALVE
• 1.14. BRAKE PUMP
• 1.15. SHOVEL CYLINDERS
• 1.15.1. RAISING CYLINDER
• 1.15.2. DUMPING CYLINDER
• 1.15.3. DUMP CYLINDER
• 1.15.4. RAISE CYLINDER
• 1.16. BACKHOE CYLINDERS
• 1.17. BACKHOE CYLINDER MAINTENANCE STANDARD
• 1.18. FRONT WORKING EQUIPMENT
• 1.19. SWING BRACKET
• 1.20. BACKHOE WORK EQUIPMENT
• 1.21. AIRCONDITIONING UNIT
• 1.21.1. AIRCONDITIONING UNIT FUNCTION
• 2. TESTING, ADJUSTING AND TROUBLESHOOTING
• 2.1. NORMAL OR STANDARD TECHNICAL DATA
• 2.1.1. FOR ENGINE
• 2.1.2. FOR MACHINE
• 2.2. SPECIAL TOOLS
• 2.3. MEASURING ENGINE SPEED
• 2.4. ADJUSTING VALVE CLEARANCE
• 2.5. MEASURING COMPRESSION PRESSURE
• 2.6. FUEL INJECTION TIMING
• 2.7. FAN BELT
• 2.7.1. TENSION CHECK
• 2.7.2. FAN BELT TENSION
• 2.8. COMPRESSOR BELT
• 2.8.1. CHECKING TENSION
• 2.8.2. FAN BELT TENSION
• 2.9. ACCELERATOR PEDAL AND LEVER
• 2.9.1. OPERATING TRAVEL
• 2.10. BRAKE PEDAL AND ALIGNMENT
• 2.10.1. TRAVEL AND MICRO SWITCHES
• 2.11. AIR BLEEDING
• 2.11.1. RELEASING RESIDUAL PRESSURE
• 2.12. ATTACHMENTS HYDRAULIC CIRCUIT
• 2.12.1. CHECKING AND SETTING PRESSURE
• 2.13. SENSING SIGNAL (LS VALVE)
• 2.14. UNLOADING VALVE
• 2.14.1. ADJUSTING THE UNLOADING VALVE
• 2.14.2. UNLOADING VALVE FUNCTIONALITY
• 2.15. PRIORITY VALVE
• 2.15.1. TESTING PRIORITY VALVE OPERATION
• 2.15.2. CLEANING PRIORITY VALVE
• 2.16. STEERING CONTROL SYSTEM PRESSURE
• 2.16.1. TESTING
• 2.16.2. SETTING
• 2.17. BRAKE SYSTEM
• 2.17.1. TESTING CIRCUIT AND BRAKE TIGHTNESS
• 2.17.2. TESTING BRAKING GROUP LEAK TIGHTNESS
• 2.18. ENGINE SPEED CONTROL
• 2.18.1. UNDER LOAD
• 2.18.2. PREPARING THE MACHINE
• 2.18.3. TESTING WITH THE TORQUE CONVERTER UNDER STRESS
• 2.18.4. TESTING THE TORQUE CONVERTER AND HYDRAULIC SYSTEM UNDER STRESS
• 2.19. POWER TRAIN PRESSURES
• 2.19.1. PREPARING THE MACHINE
• 2.19.2. CONVERTER OIL PRESSURE
• 2.19.3. CLUTCH ENGAGEMENT PRESSURE
• 2.20. POWER TRAIN CLUTCHES FUNCTION
• 2.20.1. PREPARATION OF THE MACHINE
• 2.20.2. TESTING
• 2.20.3. RETURN TO DIG DEVICE SENSOR
• 2.21. ANALYSIS OF HYDRAULIC DRIFT
• 2.21.1. FRONT EQUIPMENT
• 2.21.2. TESTING FRONT BUCKET DUMPING
• 2.21.3. BACKHOE
• 2.22. AIRCONDITIONING UNIT
• 2.22.1. TESTING THE WORKING TEMPERATURE
• 2.22.2. CHECKING THE UNIT
• 2.22.3. EMPTYING THE AIR CONDITIONING UNIT
• 2.23. FRONT AXLE TROUBLESHOOTING
• 2.24. REAR AXLE TROUBLESHOOTING
• 2.25. TRANSMISSION TROUBLESHOOTING
• 2.26. ELECTRONIC CONTROL UNIT INSPECTION
• 2.26.1. FAILURE
• 3. DISASSEMBLY AND ASSEMBLY
• 3.1. METHOD OF USING MANUAL
• 3.2. PRECAUTIONS DURING OPERATION
• 3.3. AIR CONDITIONING COMPRESSOR
• 3.4. INJECTION NOZZLES
• 3.5. COOLING LIQUID PUMP
• 3.6. ACCUMULATOR DISCONNECT SWITCH
• 3.6.1. REMOVAL
• 3.6.2. INSTALLATION
• 3.7. FRONT COUNTERWEIGHT
• 3.7.1. REMOVAL
• 3.7.2. INSTALLATION
• 3.8. RADIATOR OIL COOLER UNIT
• 3.9. HEAT AND AIR CONDITIONING GROUP
• 3.10. HYDRAULIC OIL TANK
• 3.10.1. REMOVAL
• 3.10.2. INSTALLATION
• 3.11. ENGINEGEARBOXPUMP GROUP
• 3.11.1. DISASSEMBLY CONVERTER
• 3.11.2. ASSEMBLY CONVERTER
• 3.11.3. DISASSEMBLY PLUGS AND FILTERS
• 3.11.4. ASSEMBLY PLUGS AND FILTERS
• 3.11.5. DISASSEMBLY OIL PUMP
• 3.11.6. ASSEMBLY OIL PUMP
• 3.11.7. DISASSEMBLY PIPES AND SENSORS
• 3.11.8. ASSEMBLY PIPES AND SENSORS
• 3.11.9. DISASSEMBLY HYDRAULIC CONTROL VALVE
• 3.11.10. ASSEMBLY HYDRAULIC CONTROL VALVE
• 3.11.11. DISASSEMBLY TRANSMISSION HOUSING
• 3.11.12. ASSEMBLY TRANSMISSION HOUSING
• 3.11.13. DISASSEMBLY SHAFT A
• 3.11.14. ASSEMBLY SHAFT A
• 3.11.15. DISASSEMBLY SHAFT B
• 3.11.16. ASSEMBLY SHAFT B
• 3.11.17. DISASSEMBLY SHAFT C
• 3.11.18. ASSEMBLY SHAFT C
• 3.11.19. DISASSEMBLY SHAFT E
• 3.11.20. ASSEMBLY SHAFT E
• 3.12. CONVERTER
• 3.12.1. REMOVAL
• 3.12.2. INSTALLATION
• 3.13. HEADLIGHT CONTROL GROUP
• 3.13.1. REMOVAL OF THE TRANSMISSION INDICATOR AND HEADLIGHT DIMMER
• 3.13.2. INSTALLATION OF THE TRANSMISSION INDICATOR AND HEADLIGHT DIMMER
• 3.14. STEERING UNIT
• 3.14.1. REMOVAL
• 3.14.2. INSTALLATION
• 3.15. WORKING BRAKE PUMP GROUP
• 3.15.1. REMOVAL
• 3.15.2. INSTALLATION
• 3.16. FRONT WORK EQUIPMENT CONTROL VALVE
• 3.17. REAR AXLE
• 3.17.1. REMOVAL
• 3.17.2. INSTALLATION
• 3.17.3. DISASSEMBLY
• 3.17.4. ASSEMBLY
• 3.18. WORK EQUIPMENT
• 3.18.1. FRONT BUCKET BOOMRAISING CYLINDER
• 3.18.2. FRONT BUCKET TILT CYLINDERS
• 3.18.3. FRONT BUCKET
• 3.18.4. FRONT WORK EQUIPMENT
• 3.18.5. BACKHOE CONTROL VALVE
• 3.18.6. BACKHOE BOOM CYLINDER
• 3.18.7. BACKHOE ARM CYLINDER
• 3.18.8. TELESCOPIC ARM CYLINDER
• 3.18.9. BACKHOE BUCKET CYLINDER
• 3.18.10. OUTRIGGER CYLINDERS
• 3.18.11. BACKHOE SWING CYLINDERS
• 3.19. CYLINDERS
• 3.19.1. DISASSEMBLY
• 3.19.2. ASSEMBLY
• 3.20. BOOM SWING CYLINDER
• 3.20.1. DISASSEMBLY
• 3.20.2. ASSEMBLY
• 3.21. BOOM SAFETY CYLINDER
• 3.21.1. REMOVAL
• 3.21.2. INSTALLATION
• 3.22. BACKHOE WORKING EQUIPMENT
• 3.23. TELESCOPIC ARM, COMPLETE
• 3.24. BACKHOE SWING BRACKET
• 3.24.1. REMOVAL
• 3.24.2. INSTALLATION
• 3.25. BACKHOE OUTRIGGERS
• 3.25.1. REMOVAL
• 3.25.2. INSTALLATION
• 4. OTHERS
• 4.1. HYDRAULIC CIRCUIT (CONTROL VALVE)
• 4.2. HYDRAULIC CIRCUIT (PUMP AND TANK)
• 4.3. ELECTRICAL SCHEMATIC (Sheet 1 of 3)
• 4.4. ELECTRICAL SCHEMATIC (Sheet 2 of 3)
• 4.5. ELECTRICAL SCHEMATIC (Sheet 3 of 3)
• 4.6. AIR CONDITIONER CIRCUIT