Komatsu WB140-2N, WB150-2N Backhoe Loader Shop Manual CEBM012701

Description

• Model List:
  • WB140-2N Backhoe Loader
  • WB150-2N 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. PUSH PULL COUPLER
• 0.5. COATING MATERIALS
• 0.6. STANDARD TIGHTENING TORQUE
• 0.6.1. STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS
• 0.6.2. TIGHTENING TORQUE OF HOSE NUTS
• 0.6.3. TIGHTENING TORQUE OF SPLIT FLANGE BOLTS
• 0.6.4. TIGHTENING TORQUE FOR FLARED NUTS
• 0.6.5. TABLE OF TIGHTENING TORQUES FOR ORING BOSS PIPING JOINTS
• 0.6.6. TABLE OF TIGHTENING TORQUES FOR ORING BOSS PLUGS
• 0.6.7. TIGHTENING TORQUE TABLE FOR HOSES (TAPER SEAL TYPE AND FACE SEAL TYPE)
• 0.7. ELECTRIC WIRE CODE
• 0.7.1. CLASSIFICATION BY THICKNESS
• 0.7.2. CLASSIFICATION BY COLOR AND CODE
• 0.8. CONVERSION TABLES
• 0.8.1. METHOD OF USING THE CONVERSION TABLE
• 1. GENERAL
• 1.1. SPECIFICATIONS
• 1.2. WEIGHT TABLE
• 1.3. FUEL COOLANT AND LUBRICANTS
• 2. STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
• 2.1. ENGINE MOUNTING
• 2.1.1. D MACHINES
• 2.2. TRANSMISSION DIAGRAM
• 2.2.1. D MACHINES
• 2.2.2. D MACHINES
• 2.3. TRANSMISSION
• 2.3.1. COMPLETE ASSEMBLY
• 2.3.2. FORWARD REVERSE CLUTCH
• 2.3.3. T THROUGH 4TH SPEED SHAFT
• 2.3.4. D SHAFT
• 2.4. FRONT AXLE
• 2.5. REAR AXLE
• 2.5.1. COMPLETE ASSEMBLY
• 2.5.2. DIFFERENTIAL
• 2.5.3. PLANETARY
• 2.5.4. BRAKES
• 2.5.5. DIFFERENTIAL LOCK
• 2.5.6. PC VALVE, LS VALVE, SERVO PISTON
• 2.6. BACKHOE CONTROL VALVE
• 2.6.1. MECHANICAL CONTROL
• 2.6.2. EXCAVATOR CONTROL
• 2.7. CLSS
• 2.7.1. CHARACTERISTICS
• 2.7.2. STRUCTURE
• 2.7.3. OPERATING PRINCIPLES
• 2.7.4. UNLOADING VALVE
• 2.7.5. INTRODUCTION OF THE LS PRESSURE
• 2.7.6. DELIVERY COMPENSATION
• 2.7.7. LIFD CONTROL SYSTEM
• 2.7.8. LS DECOMPRESSION VALVE
• 2.7.9. PRESSURE CUT OFF VALVE
• 2.7.10. DIFFERENTIAL LOCK BACKHOE BOOM LOCK
• 2.7.11. PPC SUPPLY VALVE ST2
• 2.7.12. PPC TELESCOPIC ARM
• 2.7.13. PPC HAMMER
• 2.7.14. PPC ARM AND HAMMER
• 2.8. LOADER CYLINDERS
• 2.8.1. BOOM ARM
• 2.8.2. BUCKET
• 2.8.3. MP BUCKET
• 2.9. BACKHOE CYLINDERS
• 2.9.1. BOOM
• 2.9.3. BUCKET
• 2.9.4. TELESCOPIC ARM CYLINDER
• 2.9.5. SWING
• 2.9.6. OUTRIGGER
• 2.9.7. BOOM LOCK CYLINDER
• 2.10. FRONT WORK EQUIPMENT
• 2.11. REAR WORK EQUIPMENT
• 2.12. AIR CONDITIONING
• 3. TESTING, ADJUSTING AND TROUBLESHOOTING
• 3.1. STANDARD VALUE TABLES FOR ENGINE
• 3.2. STANDARD VALUE TABLES FOR CHASSIS
• 3.3. SPECIAL TOOLS
• 3.4. ENGINE SPEED
• 3.4.1. TIER I ENGINE
• 3.4.2. TIER II ENGINE
• 3.5. VALVE CLEARANCE
• 3.5.1. TIER I ENGINE
• 3.5.2. TIER II ENGINE
• 3.6. COMPRESSION PRESSURE
• 3.6.1. TIER I ENGINE
• 3.6.2. TIER II ENGINE
• 3.7. FUEL INJECTION TIMING
• 3.7.1. TIER I ENGINE
• 3.7.2. TIER II ENGINE
• 3.8. FAN BELT
• 3.8.1. TENSION CHECK
• 3.8.2. TENSION ADJUSTMENT
• 3.9. COMPRESSOR DRIVE BELT
• 3.9.1. CHECKING TENSION
• 3.9.2. TENSION ADJUSTMENT
• 3.10. ACCELERATOR PEDAL AND LEVER
• 3.10.1. ACCELERATOR PEDAL TRAVEL
• 3.10.2. ACCELERATOR LEVER TRAVEL
• 3.11. BRAKE PEDAL TRAVEL
• 3.11.1. TIER I ENGINE
• 3.11.2. TIER II ENGINE
• 3.12. BLEEDING AIR
• 3.12.1. HYDRAULIC PUMP
• 3.12.2. CYLINDERS
• 3.12.3. HYDRAULIC OIL TANK
• 3.12.4. HYDRAULIC OIL TANK PRESSURIZATION
• 3.12.5. WORK CIRCUITS
• 3.12.6. BRAKE CIRCUIT
• 3.12.7. CHECK BRAKE CIRCUIT
• 3.13. HYDRAULIC CIRCUIT
• 3.13.1. INTRODUCTION
• 3.13.2. LOADER CONTROL VALVES
• 3.13.3. BACKHOE CONTROLS STYLE VALVE
• 3.13.4. EXCAVATOR CONTROLS STYLE VALVE
• 3.14. MAIN RELIEF VALVES
• 3.14.1. TESTING
• 3.14.2. SETTING RELIEF PRESSURE
• 3.15. LOADER CIRCUIT RELIEF VALVES
• 3.15.1. TESTING PRESSURE
• 3.15.2. SETTING PRESSURE
• 3.16. BACKHOE CIRCUIT RELIEF VALVES
• 3.16.1. TESTING PRESSURE
• 3.16.2. SETTING PRESSURE
• 3.17. UNLOADING VALVE
• 3.17.1. TESTING
• 3.17.2. ADJUSTMENT
• 3.18. LOAD SENSING (LS) VALVE
• 3.18.1. CLEANING PRIORITY VALVE
• 3.19. STEERING SYSTEM
• 3.19.1. TESTING
• 3.19.2. SETTING
• 3.20. BRAKE SYSTEM
• 3.20.1. CIRCUIT AND BRAKE PUMP TEST
• 3.20.2. BRAKING GROUP LEAK TEST
• 3.21. ENGINE SPEED UNDER LOAD
• 3.21.1. PREPARING THE MACHINE
• 3.21.2. TORQUE CONVERTER STALL
• 3.21.3. TORQUE CONVERTER AND HYDRAULIC STALL
• 3.22. POWER TRAIN GROUP
• 3.22.1. PREPARING THE MACHINE
• 3.22.2. CONVERTER OIL PRESSURE
• 3.22.3. CLUTCH PRESSURE
• 3.22.4. ADDITIONAL PRESSURES
• 3.23. DIRECTIONAL CLUTCHES
• 3.23.1. PREPARATION OF THE MACHINE
• 3.23.2. TESTING
• 3.24. RETURN TO DIG DEVICE
• 3.25. HYDRAULIC DRIFT
• 3.25.1. LOADER
• 3.25.2. BACKHOE
• 3.26. AIR CONDITIONING UNIT
• 3.26.1. TESTING THE WORKING TEMPERATURE
• 3.26.2. CHECKING THE UNIT
• 3.26.3. EMPTYING THE AC UNIT
• 3.27. TROUBLESHOOTING GUIDE
• 3.27.1. FRONT AXLE
• 3.27.2. REAR AXLE
• 3.27.3. TRANSMISSION
• 4. REMOVAL AND INSTALLATION
• 4.1. METHOD OF USING THIS MANUAL
• 4.1.1. REMOVAL OR INSTALLATION OF PARTS OR ASSEMBLIES
• 4.2. PRECAUTIONS DURING SERVICE OPERATIONS
• 4.2.1. REMOVAL PRECAUTIONS
• 4.2.2. INSTALLATION PRECAUTIONS
• 4.3. SPECIAL TOOLS
• 4.3.1. LISTING
• 4.3.2. SKETCHES
• 4.4. ENGINE COMPONENTS
• 4.5. LOADER CYLINDER LOCK
• 4.5.1. LOCKING PROCEDURES
• 4.6. INJECTION NOZZLE
• 4.7. BATTERY DISCONNECT SWITCH
• 4.8. RADIATOR OIL COOLERS
• 4.9. ENGINE AND TRANSMISSION
• 4.10. TORQUE CONVERTER
• 4.11. COLUMN CONTROL SWITCHES
• 4.11.1. REMOVAL
• 4.11.2. INSTALLATION
• 4.12. MASTER BRAKE CYLINDER
• 4.12.1. REMOVAL
• 4.12.2. INSTALLATION
• 4.13. LOADER CONTROL VALVE
• 4.14. LOADER CYLINDERS
• 4.14.1. BOOM
• 4.14.2. BUCKET
• 4.14.3. INSTALLATION
• 4.14.4. MP BUCKET CYLINDER
• 4.15. FRONT EQUIPMENT
• 4.15.1. BUCKET
• 4.15.2. BOOM
• 4.16. BACKHOE CONTROL VALVE
• 4.16.1. BACKHOE CONTROL
• 4.16.2. INSTALLATION
• 4.16.3. EXCAVATOR CONTROLS
• 4.17. PPC CONTROLS
• 4.17.1. PPC VALVE
• 4.17.2. SUPPORT RELEASE CABLES
• 4.17.3. SUPPORT RETURN GAS SPRING
• 4.17.4. SOLENOID VALVE
• 4.17.5. SERVO CONTROL FEED VALVE
• 4.18. BACKHOE CYLINDERS
• 4.19. BACKHOE WORK EQUIPMENT
• 4.19.1. INNER ARM GUIDES
• 4.19.2. BOOM
• 4.19.3. SWING BRACKET
• 4.19.4. OUTRIGGERS
• 5. OTHER
• 5.1. HYDRAULIC CIRCUIT
• 5.1.1. STANDARD CONTROLS FOR WB1402N SHEET 1 OF 2
• 5.1.2. STANDARD CONTROLS FOR WB1402N SHEET 2 OF 2
• 5.1.3. STANDARD CONTROLS FOR WB1502N SHEET 1 OF 2
• 5.1.4. STANDARD CONTROLS FOR WB1502N SHEET 2 OF 2
• 5.1.5. PPC SYSTEM FOR WB1402N SHEET 1 OF 3
• 5.1.6. PPC SYSTEM FOR WB1402N SHEET 2 OF 3
• 5.1.7. PPC SYSTEM FOR WB1402N SHEET 3 OF 3
• 5.1.8. PPC SYSTEM FOR WB1502N SHEET 1 OF 3
• 5.1.9. PPC SYSTEM FOR WB1502N SHEET 2 OF 3
• 5.1.10. PPC SYSTEM FOR WB1502N SHEET 3 OF 3
• 5.2. ELECTRICAL
• 5.2.1. CAB WIRING SCHEMATIC SHEET 1 OF 5
• 5.2.2. CAB WIRING SCHEMATIC SHEET 2 OF 5
• 5.2.3. CAB WIRING SCHEMATIC SHEET 3 OF 5
• 5.2.4. CAB WIRING SCHEMATIC SHEET 4 OF 5
• 5.2.5. CAB WIRING SCHEMATIC SHEET 5 OF 5
• 5.2.6. LEGEND FOR CAB WIRING SCHEMATIC
• 5.2.7. CANOPY WIRING SCHEMATIC SHEET 1 OF 5
• 5.2.8. CANOPY WIRING SCHEMATIC SHEET 2 OF 5
• 5.2.9. CANOPY WIRING SCHEMATIC SHEET 3 OF 5
• 5.2.10. CANOPY WIRING SCHEMATIC SHEET 4 OF 5
• 5.2.11. CANOPY WIRING SCHEMATIC SHEET 5 OF 5
• 5.2.12. LEGEND FOR CANOPY WIRING SCHEMATIC
• 5.2.13. TIER I ENGINE HARNESS
• 5.2.14. TIER II ENGINE HARNESS
• 5.2.15. LEGEND FOR TIER I AND II ENGINE HARNESSES
• 5.2.16. FRONT HARNESS
• 5.2.17. LEGEND FOR FRONT HARNESS
• 5.2.18. LATERAL HARNESS AND SIDE DASHBOARD
• 5.2.19. PPC FRAME AND SIDE DASH BOARD HARNESS
• 5.2.20. WORK LIGHT HARNESS
• 5.2.21. FUSE AND RELAY PANEL