Komatsu WA420-1LC Wheel Loader Shop Manual CEBMW24020

Description

• Model List:
  • WA420-1LC Wheel Loader

• 1. MAIN MENU
• 2. CONTENTS
• 3. ENGINE
• 3.1. TESTING AND ADJUSTING
• 3.1.1. STANDARD VALUE TABLE
• 3.1.2. TOOL LIST FOR TESTING AND ADJUSTING
• 3.1.3. VALVE CLEARANCE
• 3.1.4. FUEL INJECTION TIMING
• 3.1.5. ENGINE OIL PRESSURE AND TEMPERATURE
• 3.1.6. BLOWBY PRESSURE
• 3.1.7. EXHAUST GAS COLOR
• 3.1.8. ACCELERATOR PEDAL, OPERATING FORCE AND OPERATING ANGLE
• 3.2. DISASSEMBLY AND ASSEMBLY
• 3.2.1. STARTING MOTOR
• 3.2.2. ALTERNATOR
• 3.2.3. FUEL INJECTION PUMP
• 3.3. STRUCTURE AND FUNCTION
• 3.3.1. GENERAL
• 3.3.2. TORQUE CONVERTER AND TRANSMISSION PIPING
• 3.3.3. TORQUE CONVERTER
• 3.3.4. TORQUE CONVERTER OIL FILTER
• 3.3.5. TORQUE CONVERTER OIL COOLER
• 3.3.6. TORQUE CONVERTER RELIEF VALVE
• 3.3.7. TRANSMISSION
• 3.3.8. TRANSMISSION CONTROL VALVE
• 3.3.9. TRANSMISSION PILOT FILTER
• 3.3.10. TRANSFER
• 3.3.11. DRIVE SHAFT
• 3.3.12. AXLE MOUNT
• 3.3.13. AXLE AND DIFFERENTIAL
• 3.3.14. FINAL DRIVE
• 3.3.15. TIRE AND WHEEL
• 3.4. TESTING AND ADJUSTING
• 3.4.1. STANDARD VALUE TABLE
• 3.4.2. TOOL LIST
• 3.4.3. ENGINE SPEED
• 3.4.4. OIL PRESSURE OF TORQUE CONVERTER AND TRANSMISSION
• 3.4.5. SHIFT LEVER
• 3.4.6. METHOD FOR OPERATION OF EMERGENCY MANUAL SPOOL
• 3.4.7. TIRE AND WHEEL
• 3.4.8. TROUBLESHOOTING
• 3.5. DISASSEMBLY AND ASSEMBLY
• 3.5.1. TORQUE CONVERTER CHARGING PUMP
• 3.5.2. TORQUE CONVERTER, TRANSMISSION, TRANSFER
• 3.5.3. TORQUE CONVERTER
• 3.5.4. TRANSMISSION
• 3.5.5. TRANSFER ASSEMBLY
• 3.5.6. TRANSMISSION CONTROL VALVE
• 3.5.7. FRONT DIFFERENTIAL
• 3.5.8. REAR DIFFERENTIAL
• 3.6. MAINTENANCE STANDARD
• 3.6.1. TRANSMISSION AND ENGINE MOUNT
• 3.6.2. TORQUE CONVERTER CHARGING PUMP
• 3.6.3. TORQUE CONVERTER
• 3.6.4. TORQFLOW TRANSMISSION
• 4. STEERING SYSTEM
• 4.1. STRUCTURE AND FUNCTION
• 4.1.1. HYDRAULIC PIPING
• 4.1.2. HYDRAULIC CIRCUIT DIAGRAMS
• 4.1.3. STEERING CONTROL SYSTEM
• 4.1.4. STEERING CYLINDER
• 4.1.5. STEERING COLUMN AND ORBITROLL
• 4.1.6. CENTER HINGE PIN
• 4.1.7. GROUND DRIVEN STEERING PUMP (OPTIONAL)
• 4.1.8. DIVERTER VALVE (OPTIONAL)
• 4.2. TESTING AND ADJUSTING
• 4.2.1. STANDARD VALUE TABLE
• 4.2.2. TOOL LIST
• 4.2.3. STEERING WHEEL PLAY
• 4.2.4. OPERATING FORCE OF STEERING WHEEL
• 4.2.5. OPERATING TIME OF STEERING WHEEL
• 4.2.6. STEERING CONTROL
• 4.2.7. STEERING OIL PRESSURE
• 4.2.8. GROUND DRIVEN STEERING PUMP
• 4.2.9. TROUBLESHOOTING
• 4.3. DISASSEMBLY AND ASSEMBLY
• 4.3.1. STEERING VALVE
• 4.3.2. STEERING DEMAND VALVE
• 4.3.3. CENTER HINGE PIN
• 4.3.4. STEERING CYLINDER
• 4.4. MAINTENANCE STANDARD
• 4.4.1. STEERING COLUMN AND ORBITROLL
• 4.4.2. STEERING VALVE
• 4.4.3. STEERING CYLINDER MOUNT
• 4.4.4. STEERING CYLINDER
• 4.4.5. CENTER HINGE PIN
• 4.4.6. DIVERTER VALVE
• 4.4.7. GROUND DRIVEN STEERING PUMP
• 5. BRAKE AND AIR SYSTEM
• 5.1. STRUCTURE AND FUNCTION
• 5.1.1. AIR PIPING
• 5.1.2. AIR CIRCUIT DIAGRAM
• 5.1.3. PARKING BRAKE SOLENOID VALVE
• 5.1.4. SPRING CYLINDER
• 5.1.5. BRAKE CALIPER
• 5.2. TESTING AND ADJUSTING
• 5.2.1. STANDARD VALUE TABLE
• 5.2.2. TOOL LIST
• 5.2.3. BRAKE PEDAL
• 5.2.5. AIR DRYER
• 5.2.6. BRAKE PERFORMANCE
• 5.2.7. BRAKE OIL PRESSURE
• 5.2.8. WEAR OF BRAKE DISC
• 5.2.9. AIR BLEEDING FROM BRAKE LINE
• 5.2.10. PARKING BRAKE
• 5.2.11. TROUBLESHOOTING
• 5.3. DISASSEMBLY AND ASSEMBLY
• 5.3.1. SLACK ADJUSTER
• 5.3.2. BRAKE
• 5.3.3. SPRING CYLINDER
• 5.3.4. PARKING BRAKE
• 5.3.5. PARKING BRAKE PAD
• 5.4. MAINTENANCE STANDARD
• 5.4.1. BRAKE VALVE
• 5.4.2. BRAKE CHAMBER
• 5.4.3. SLACK ADJUSTER
• 5.4.4. BRAKE
• 5.4.5. PARKING BRAKE
• 5.4.6. SPRING CYLINDER
• 6. WORK EQUIPMENT SYSTEM
• 6.1. STRUCTURE AND FUNCTION
• 6.1.1. HYDRAULIC PIPING
• 6.1.2. HYDRAULIC CIRCUIT DIAGRAM
• 6.1.3. BUCKET LINKAGE
• 6.1.4. BUCKET POSITIONER AND BOOM KICKOUT
• 6.1.5. HYDRAULIC TANK
• 6.1.6. HYDRAULIC PUMP
• 6.1.7. MAIN CONTROL VALVE
• 6.1.8. HYDRAULIC CYLINDER
• 6.2. TESTING AND ADJUSTING
• 6.2.1. STANDARD VALUE TABLE
• 6.2.2. TOOL LIST
• 6.2.3. DUMP AND LIFT CONTROL LEVERS
• 6.2.4. HYDRAULIC PRESSURE
• 6.2.5. LIFT ARM AND BUCKET
• 6.2.6. HYDRAULIC DRIFT OF LIFT ARM AND BUCKET
• 6.2.7. BUCKET POSITIONER
• 6.2.8. BOOM KICKOUT
• 6.2.9. TROUBLESHOOTING
• 6.3. DISASSEMBLY AND ASSEMBLY
• 6.3.1. HYDRAULIC TANK
• 6.3.2. HYDRAULIC FILTER
• 6.3.3. STEERING PUMP
• 6.3.4. MAIN CONTROL VALVE
• 6.3.5. HYDRAULIC CYLINDER
• 6.4. MAINTENANCE STANDARD
• 6.4.1. MAIN CONTROL VALVE
• 6.4.2. DUMP CYLINDER
• 6.4.3. LIFT CYLINDER
• 6.4.4. BUCKET LINKAGE
• 6.4.5. BUCKET POSITIONER AND BOOM KICKOUT
• 6.4.6. BUCKET
• 6.4.7. HYDRAULIC PUMP
• 7. ELECTRIC AND ELECTRONIC SYSTEM
• 7.1. STRUCTURE AND FUNCTION
• 7.1.1. ELECTRICAL WIRING DIAGRAM
• 7.1.2. ELECTRICAL WIRING 3D CIRCUIT DIAGRAM
• 7.1.3. ELECTRICAL WIRING CONNECTORS (CN) DIAGRAM
• 7.1.4. ENGINE STARTING CIRCUIT
• 7.1.5. ENGINE STOP CIRCUIT
• 7.1.6. ELECTRICAL TRANSMISSION CONTROL
• 7.1.7. KICKDOWN SWITCH
• 7.1.8. KICKDOWN ELECTRIC CIRCUIT
• 7.1.9. ELECTRICAL PARKING BRAKE CONTROL
• 7.1.10. ELECTRONIC VEHICLE MONITORING SYSTEM (EVMS)
• 7.1.11. BUCKET POSITIONER AND BOOM KICKOUT
• 7.2. TESTING AND ADJUSTING
• 7.2.1. STANDARD VALUE TABLE
• 7.2.2. ADJUSTING SPEEDOMETER MODULE IN THE VEHICLE MONITOR
• 7.2.3. TROUBLESHOOTING
• 7.3. DISASSEMBLY AND ASSEMBLY
• 7.3.1. MACHINE MONITOR
• 8. OTHER
• 8.1. DISASSEMBLY AND ASSEMBLY
• 8.1.1. SA SERIES
• 8.2. METRIC CONVERSIONS