Komatsu WA250-3 Avance Loader Shop Manual SEBM005910

Description

• Model List:
  • WA250-3 Avance Loader

• 1. COVER
• 2. CONTENTS
• 3. GENERAL
• 3.1. GENERAL ASSENBLY DRAWING
• 3.2. SPECIFICATIONS
• 3.3. WEIGHT TABLE
• 3.4. LIST OF LUBRICANT AND WATER
• 4. STRUCTURE AND FUNCTION
• 4.1. POWER TRAIN
• 4.2. PATH OF POWER TRANSMISSOM
• 4.3. TORQUE CONVERTER, TRANSMISSION PIPING
• 4.4. TORQUE CONVERTER,TRANSMISSION HYDRAULIC SISTEM DIAGRAM
• 4.5. TORQUE CONVERTER,TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM
• 4.6. TORQUE CONVERTER
• 4.7. TORQUE CONVERTER OIL FILTER
• 4.8. TRANSMISSION
• 4.9. TRANSMISSION CONTROL VALVE
• 4.10. DRIVE SHAFT
• 4.11. AXLE
• 4.12. FINAL DRIVE
• 4.13. AXLE MOUNT
• 4.14. CENTER HINGE PIN
• 4.15. STEERING PIPING
• 4.16. STEERING COLUMN
• 4.17. PRIORITY VALVE
• 4.18. STEERING VALVE (ORBITROLL)
• 4.19. WAY RESTRICTOR VALVE
• 4.20. BRAKE PIPING
• 4.21. POWER MASTER CYLINDER
• 4.22. BRAKE
• 4.23. PARKING BRAKE CONTROL
• 4.24. HYDRAULIC PIPING
• 4.25. STEERING, HYDRAULIC PUMP HYDRAULIC SYSTEM DIAGRAM
• 4.26. STEERING,HYDRAULIC PUMP CIRCUIT DIAGRAM
• 4.27. WORK EQUIPMENT CONTROL LEVER LINKAGE
• 4.28. HYDRAULIC TANK
• 4.29. WORK EQUIPMENT LINKAGE
• 4.30. BUCKT
• 4.31. BUKKET POSITIONER AND BOOM KICKOUT
• 4.33. MACHINE MOINTOR SISTEM
• 4.34. MAIN MONITOR
• 4.35. MAINTENANCE MONITOR DISPLAY FUNCTION
• 4.36. SENSORS AND SWITCHES
• 4.37. ENGINE STARTING CIRCUIT
• 4.38. ENGINE STOP CIRCUIT
• 4.39. PREHEATING CIRCUIT
• 4.40. STARTING AID
• 4.41. ELECTRICAL TRANSMISSION CONTROL
• 4.42. COMBINATION SWITCH
• 4.43. TRANSMISSION CUTOFF FUNCTION
• 4.44. PARKING BRAKE NEUTRALIZER RELAY FUNCTION
• 4.45. KICKDOWN SWITCH
• 4.46. KICKDOWN ELECTRIC CIRCUIT DIAGRAM
• 4.47. TRANSMISSION AUTO SHIFT CONTRCL SYSTEM (IF EQUIPPED)
• 5. TESTING AND ADJUSTING
• 5.1. STANDARD VALUE TABLE FOR ENGINE
• 5.2. STANDARD VALUE TABLE FOR CHASSIS
• 5.3. STANDARD VALUE TABLE FOR ELECTRICAL PARTS
• 5.4. TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
• 5.5. ADJUSTING VALUE CLEARANCE
• 5.6. MEASURING COMPRESSION PRESSURE
• 5.7. TESTING AND ADJUSTING FUEL INGECTION TIMING
• 5.8. MEASURING EXHAUST COLOR
• 5.9. MEASURING BLOWBY PRESSURE
• 5.10. TESTING AND ADJUSTING FAN BELT TENSION
• 5.11. MEASURING ENGINE SPEED
• 5.12. METHOD FOR ADJUSTING ENGINE STOP MOTOR CABLE
• 5.13. ADJUSTING ENGINE STOP SOLENOID
• 5.14. MEASURING ENGINE OIL PRESSURE
• 5.15. MEASURING INTAKE AIR PRESSURE (BOSST PRESSURE)
• 5.16. MEASURING EXHAUST GAS TEMPERATURE
• 5.17. MEASURING ACCELERATOR PEDAL
• 5.18. MEASURING SHIFT LEVER
• 5.19. MEASURING STALL SPEED
• 5.20. MEASURING TORQUE CONVERTER,TRANSMISSION OIL PRESSURE
• 5.21. METHOD OF OPERATING EMERGENCY MANUAL SPOOL
• 5.22. TESTING AND ADJUSTING STEERING WHEEL
• 5.23. MEASURING STEERING OIL PRESSURE
• 5.24. MEASURING BRAKE PEDAL
• 5.25. TESTING AND ADJUSTING BRAKE PEDAL LINKAGE
• 5.26. MEASURING BRAKE PERFORMANCE
• 5.27. MEASURING BRAKE OIL PRESSURE
• 5.28. MEASURING WEAR OF BRAKE DISC
• 5.29. BLEEDING AIR FROM BRAKE SISTEM
• 5.30. MEASURING PARKING BRAKE PERFORMANCE
• 5.31. TESTING AND ADJUSTING PARKING BRAKE LINKAGE
• 5.32. TESTING PARKING BRAKE PISTON STROKE
• 5.33. MEASURING WEAR OF PARKING BRAKE DISC
• 5.34. MEASURING AND ADJUSTING WORK EQUIPMENT CONTROL LEVER
• 5.35. MEASURING STROKE F WORK EQUIPMENT VALVE SPOOL
• 5.36. MEASURING WORK EQUIPMENT HYDRAULIC PRESSURE
• 5.37. MEASURING WORK EQUIPMENT
• 5.38. TESTING AND ADJUSTING BUCKET POSITIONER
• 5.39. TESTING AND ADJUSTING BOOM KICKOUT
• 5.40. ADJUSTING MAIN MONITOR (SPEEDOMETER MODULE)
• 5.41. CHECKING FOR ABNORMALITY IN FUEL LEVEL SENSOR
• 5.42. TROUBLESHOOTING
• 5.42.1. POINTS TO REMEMBER WHEN TROUBLESHOOTING
• 5.42.2. SEQUENCE OF EVENTS IN TROUBLESHOOTING
• 5.42.3. PRECAUTIONS WHEN CARRYING OUT MAINTENANCE
• 5.42.4. HANDLING CONNECTORS
• 5.42.5. CHECKS BEOORE TROUBLESHOOTING
• 5.42.6. JUDGEMENT OF POWER TRAIN
• 5.42.7. METHOD OF USING TROUBLESHOOTING CHARTS
• 5.42.8. CONNECTOR TYPES AND MOUNTING LOCATIONS
• 5.42.9. CONNECTOR PIN ARRANGEMENT DIAGRAM
• 5.42.10. CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
• 5.42.11. TROUBLESHOOTING OF ENGINE (S6D95L) SYSTEM (SMODE)SERIAL NO.5300152999
• 5.42.12. TROULESHOOTING OF ENGINE (S6D102E) SYSTEM (S MODE) SERIAL NO.53001 AND UP
• 5.42.13. TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (CHASSIS RELATED) (T MODE)
• 5.42.14. TROUBLESHOOTING OF ELECTRICAL SYSTEM FOR ENGINE, TRANMISSION (E MODE)
• 5.42.15. TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE)
• 5.42.16. TROUBLESHING OF MAINTENANCE MONITOR SYSTEM(K MODE)
• 5.42.17. TROUBLESHOOTING OF TRANSMISSION CONTROLLER SYSTEM (A MODE)
• 6. DISASSEMBLY AND ASSEMBLY
• 6.1. METHOD OF USING MANUAL
• 6.2. PRECAUTIONS WHEN CARRYING OUT OPERATION
• 6.3. SPECIAL TOOL LIST
• 6.4. STARTING MOTOR
• 6.4.1. REMOVAL AND INSTALLATION
• 6.5. ALTERNATOR
• 6.5.1. REMOVAL AND INSTALLATION
• 6.6. ENGINE OIL COOLER
• 6.6.1. REMOVAL AND INSTALLATION
• 6.7. FUEL OF INJECTION PUMP
• 6.7.1. REMOVAL
• 6.7.2. INSTALLATION
• 6.8. WATER PUMP
• 6.8.1. REMOVAL AND INSTALLATION
• 6.9. TURBOCHARGER
• 6.9.1. REMOVAL AND INSTALLATION
• 6.10. NOZZLE HOLDER
• 6.10.1. REMOVAL AND INSTALLATION
• 6.11. THERMOSTAT
• 6.11.1. REMOVAL AND INSTALLATION
• 6.12. RADIATOR, HYDRAULIC COOLER
• 6.13. TORQUE CONVERTER CHARGING PUMP
• 6.13.1. REMOVAL AND INSTALLATION
• 6.14. TORQUE CONVERTER, TRANSMISSION
• 6.14.1. REMOVAL
• 6.14.2. INSTALLATION
• 6.15. TORQUE CONVERTER
• 6.16. TRANSMISSION CONTROL VLVE
• 6.16.1. REMOVAL
• 6.16.2. INSTALLATION
• 6.16.3. DISASSEMBLY
• 6.16.4. ASSEMBLY
• 6.17. TRANSMISSION SOLENOID VALVE
• 6.17.1. DISASSEMBLY AND ASSEMBLY
• 6.18. ACCUMULATOR VALVE
• 6.18.1. DISASSEMBLY AND ASSEMBLY
• 6.19. CENTER HINGE PIN
• 6.20. STEERING CYLINDER
• 6.20.1. REMOVAL AND INSTALLATION
• 6.21. POWER MASTER CYLINDER
• 6.21.1. REMOVAL
• 6.21.2. INSTALLATION
• 6.21.3. DISASSEMBLY
• 6.21.4. ASSEMBLY
• 6.22. PARKING BRAKE DISC
• 6.22.1. REMOVAL
• 6.22.2. INSTALLATION
• 6.23. HYDRAULIC TANK
• 6.23.1. REMOVAL
• 6.23.2. INSTALLATION
• 6.24. HYDRAULIC FILTER
• 6.24.1. REMOVAL AND INSTALLATION
• 6.25. WORK EQUIPMENT, STEERING PUMP
• 6.25.1. REMOVAL AND INSTALLATION
• 6.26. MAIN CONTROL VALVE
• 6.26.1. REMOVAL
• 6.26.2. INSTALLATION
• 6.26.3. DISASSEMBLY AND ASSEMBLY
• 6.27. BUCKET CYLINDER
• 6.28. HYDRAULIC CYLINDER
• 6.28.1. REMOVAL AND INSTALLATION
• 6.29. MAINTENANCE MONITOR
• 6.29.1. REMOVAL AND INSTALLATION
• 6.30. AIR CONDITIONER UNIT
• 6.30.1. REMOVAL
• 6.30.2. INSTALLATION
• 6.31. AIR CONDITIONER CONDENSER
• 6.31.1. REMOVAL
• 6.31.2. INSTALLATION
• 6.32. DPY RECEIVER
• 6.32.1. REMOVAL AND INSTALLATION
• 6.33. AIR CONDITIONER COMPRESSOR
• 6.33.1. REMOVAL AND INSTALLATION
• 7. MAINTENANCE STANDARD
• 7.1. TRANSMISSION, ENGINE MOUNT
• 7.2. TORQUE CONVERTER
• 7.3. TRANSMISSION
• 7.4. TRANSMISSION CONTROL VALVE
• 7.5. ACCUMULATOR VALVE
• 7.6. DRIVE SHAFT
• 7.7. DIFFERENTIAL
• 7.8. FINAL DRIVE
• 7.9. AXLE MOUNT
• 7.10. CENTER HINGE PIN
• 7.11. STEERING COLUMN
• 7.12. PRIORITY VALVE
• 7.13. MASTER CYLINDER
• 7.14. BRAKE
• 7.15. PARKING BRAKE
• 7.16. MAIN CONTROL VALVE
• 7.17. HYDRAULIC CYLINDER
• 7.18. STEERING CYLINDER MOUNT
• 7.19. WORK EQUIPMENT LINKAGE
• 7.20. BUCKET
• 7.21. BUCKET POSITIONER AND BOOM KICKOUT
• 8. OTHERS
• 8.1. ELECTRICAL CIRCUIT DIAGRAM (1/2) (SERIAL NO. 5000153000)
• 8.2. ELECTRICAL CIRCUIT DIAGRAM (2/2) (SERIAL NO. 5000153000)
• 8.3. ELECTRICAL CIRCUIT DIAGRAM (1/2) (SERIAL NO. 53001 AND UP )
• 8.4. ELECTRICAL CIRCUIT DIAGRAM (2/2) (SERIAL NO. 53001 AND UP)
• 8.5. ELECTRICAL CIRCUIT DIAGRAM (1/2) FOR AUTO SHIFT CONTROL SPEC. (SERIAL NO. 53001 AND UP)
• 8.6. ELECTRICAL CIRCUIT DIAGRAM (2/2) FOR AUTO SHIFT CONTROL SPEC. (SERIAL NO. 53001 AND UP)