Komatsu WA250-3L Wheel Loader Shop Manual CEBM001301

Description

• Model List:
  • WA250-3L Wheel Loader

• 0.1. HOW TO READ THE SHOP MANUAL
• 0.2. HOISTING INSTRUCTIONS
• 0.3. COATING MATERIALS
• 0.4. STANDARD TORQUE REQUIREMENTS
• 0.5. ELECTRIC WIRE CODE
• 0.6. CONVERSION TABLES
• 1. GENERAL
• 1.1. SPECIFICATION DRAWINGS
• 1.2. SPECIFICATIONS
• 1.3. WEIGHT TABLE
• 1.4. FUEL, COOLANT AND LUBRICANTS
• 1.5. ENGINE OIL SPECIFICATIONS
• 1.6. DIESEL FUEL SPECIFICATIONS
• 1.7. COOLANT SPECIFICATIONS
• 2. STRUCTURE AND FUNCTION
• 2.1. POWER TRAIN
• 2.2. PATH OF POWER TRANSMISSION
• 2.3. TORQUE CONVERTER, TRANSMISSION PIPING
• 2.4. TORQUE CONVERTER, TRANSMISSION HYDRAULIC SYSTEM DIAGRAM
• 2.5. TORQUE CONVERTER, TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM
• 2.6. TORQUE CONVERTER
• 2.7. TORQUE CONVERTER OIL FILTER
• 2.8. TRANSMISSION
• 2.9. TRANSMISSION CONTROL VALVE
• 2.10. DRIVE SHAFT
• 2.11. AXLE
• 2.12. FINAL DRIVE
• 2.13. AXLE MOUNT
• 2.14. CENTER HINGE PIN
• 2.15. STEERING PIPING
• 2.16. STEERING COLUMN
• 2.17. PRIORITY VALVE
• 2.18. STEERING VALVE (ORBITROLL)
• 2.19. STEERING VALVE
• 2.20. WAY RESTRICTOR VALVE
• 2.21. BRAKE PIPING
• 2.22. POWER MASTER CYLINDER
• 2.23. BRAKE
• 2.24. PARKING BRAKE CONTROL
• 2.25. HYDRAULIC PIPING
• 2.26. STEERING, HYDRAULIC PUMP HYDRAULIC SYSTEM DIAGRAM
• 2.27. STEERING, HYDRAULIC PUMP HYDRAULIC CIRCUIT DIAGRAM
• 2.28. WORK EQUIPMENT LEVER LINKAGE
• 2.29. HYDRAULIC TANK
• 2.30. MAIN CONTROL VALVE
• 2.31. WORK EQUIPMENT LINKAGE
• 2.32. BUCKET
• 2.33. BUCKET POSITIONER AND BOOM KICKOUT
• 2.34. ROPS CAB
• 2.35. AIR CONDITIONER PIPING
• 2.36. AIR CONDITIONSER/HEATER WIRING DIAGRAM (EAGLE)
• 2.37. MACHINE MONITOR SYSTEM
• 2.38. MAIN MONITOR
• 2.39. MAINTENANCE MONITOR DISPLAY FUNCTION
• 2.40. SENSORS AND SWITCHES
• 2.41. ELECTRICAL WIRING DIAGRAM (1/2)
• 2.42. ELECTRICAL WIRING DIAGRAM (2/2)
• 2.43. ENGINE STARTING CIRCUIT
• 2.44. ENGINE STOP CIRCUIT
• 2.45. AUTOMATIC PREHEATING CIRCUIT (Q.H.S. CIRCUIT)
• 2.46. ELECTRICAL TRANSMISSION CONTROL
• 2.47. COMBINATION SWITCH
• 2.48. TRANSMISSION CUTOFF FUNCTION
• 2.49. PARKING BRAKE NEUTRALIZER RELAY FUNCTION
• 2.50. KICK DOWN SWITCH
• 2.51. KICK DOWN ELECTRIC CIRCUIT DIAGRAM
• 3. TESTING AND ADJUSTING
• 3.1. STANDARD VALUE TABLE FOR ENGINE
• 3.2. STANDARD VALUE TABLE FOR CHASSIS
• 3.3. STANDARD VALUE TABLE FOR ELECTRICAL PARTS
• 3.4. SERVICE TOOLS FOR TESTING, ADJUSTING TROUBLESHOOTING
• 3.5. MEASURING ENGINE SPEEDS
• 3.6. MEASURING ENGINE LUBRICATING OIL PRESSURE
• 3.7. MEASURING FUEL FILTER INLET RESTRICTION
• 3.8. MEASURING BLOWBY PRESSURE
• 3.9. MEASURING COMPRESSION PRESSURE
• 3.10. MEASURING EXHAUST COLOR
• 3.11. MEASURING COOLANT TEMPERATURE
• 3.12. MEASURING AND ADJUSTING VALVE CLEARANCE
• 3.13. MEASURING ACCELERATOR PEDAL
• 3.14. MEASURING SHIFT LEVER
• 3.15. MEASURING STALL SPEEDS
• 3.16. MEASURING TORQUE CONVERTER, TRANSMISSION OIL PRESSURE
• 3.17. METHOD OF OPERATING EMERGENCY MANUAL SPOOL
• 3.18. TESTING AND ADJUSTING STEERING WHEEL
• 3.19. MEASURING STEERING OIL PRESSURE
• 3.20. MEASURING BRAKE PEDAL
• 3.21. TESTING AND ADJUSTING BRAKE PEDAL LINKAGE
• 3.22. MEASURING BRAKE PERFORMANCE
• 3.23. MEASURING BRAKE OIL PRESSURE
• 3.24. MEASURING WEAR OF BRAKE DISC
• 3.25. BLEEDING AIR FROM BRAKE SYSTEM
• 3.26. MEASURING PARKING BRAKE PERFORMANCE
• 3.27. TESTING AND ADJUSTING PARKING BRAKE LINKAGE
• 3.28. TESTING PARKING BRAKE PISTON STROKE
• 3.29. MEASURING WEAR OF PARKING BRAKE DISC
• 3.30. MEASURING AND ADJUSTING WORK EQUIPMENT CONTROL LEVER
• 3.31. MEASURING STROKE OF WORK EQUIPMENT VALVE SPOOL
• 3.32. MEASURING WORK EQUIPMENT HYDRAULIC PRESSURE
• 3.33. MEASURING WORK EQUIPMENT
• 3.34. TESTING AND ADJUSTING BUCKET POSITIONER
• 3.35. TESTING AND ADJUSTING BOOM KICKOUT
• 3.36. ADJUSTING MAIN MONITOR (SPEEDOMETER MODULE)
• 3.37. CHECKING FOR ABNORMALITY IN FUEL LEVEL SENSOR
• 3.38. TROUBLESHOOTING
• 3.39. TROUBLESHOOTING OF ENGINE SYSTEM TABLE OF CONTENTS (S MODE)
• 3.40. TROUBLESHOOTING SYSTEMS OF HYD. AND MECHANICAL (TMODE)
• 3.41. TROUBLESHOOTING OF ELECTRICAL EQUIPMENT FOR ENGINE, TRANSMISSION (EMODE)
• 3.42. TROUBLESHOOTING OF MAIN MONITOR SYSTEM (MMODE)
• 3.43. TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM (KMODE)
• 3.44. TROUBLESHOOTING EAGLE AIR CONDITIONER
• 4. DISASSEMBLY AND ASSEMBLY
• 4.1. METHOD OF USING MANUAL
• 4.2. PRECAUTIONS WHEN CARRYING OUT OPERATION
• 4.3. SPECIAL TOOL LIST
• 4.4. FUEL INJECTION PUMP
• 4.5. ENGINE OIL COOLER
• 4.6. MUFFLER AND AIR CLEANER
• 4.7. TORQUE CONVERTER CHARGING PUMP
• 4.8. TORQUE CONVERTER, TRANSMISSION
• 4.9. TORQUE CONVERTER
• 4.10. TRANSMISSION
• 4.11. TRANSMISSION CLUTCH PACK
• 4.12. PARKING BRAKE ASSEMBLY
• 4.13. TRANSMISSION CONTROL VALVE
• 4.14. TRANSMISSION SOLENOID VALVE
• 4.15. ACCUMULATOR VALVE
• 4.16. CENTER HINGE PIN
• 4.17. MAIN CONTROL VALVE
• 4.18. STEERING CYLINDER
• 4.19. POWER MASTER CYLINDER
• 4.20. PARKING BRAKE DISC
• 4.21. HYDRAULIC TANK
• 4.22. HYDRAULIC FILTER
• 4.23. WORK EQUIPMENT, STEERING PUMP
• 4.24. BUCKET CYLINDER
• 4.25. BOOM CYLINDER
• 4.26. HYDRAULIC CYLINDER
• 4.27. MAINTENANCE MONITOR ASSEMBLY
• 5. MAINTENANCE STANDARD
• 5.1. ENGINE MOUNT, TRANSMISSION MOUNT
• 5.2. TORQUE CONVERTER CHARGING PUMP
• 5.3. TORQUE CONVERTER
• 5.4. TRANSMISSION
• 5.5. TRANSMISSION CONTROL VALVE
• 5.6. ACCUMULATOR VALVE
• 5.7. DRIVE SHAFT
• 5.8. DIFFERENTIAL
• 5.9. FINAL DRIVE
• 5.10. AXLE MOUNT
• 5.11. CENTER HINGE PIN
• 5.12. STEERING COLUMN
• 5.13. PRIORITY VALVE
• 5.14. MASTER CYLINDER
• 5.15. BRAKE
• 5.16. PARKING BRAKE
• 5.17. HYDRAULIC PUMP
• 5.18. MAIN CONTROL VALVE
• 5.19. HYDRAULIC CYLINDER
• 5.20. STEERING CYLINDER MOUNT
• 5.21. WORK EQUIPMENT LINKAGE
• 5.22. BUCKET
• 5.23. BUCKET POSITIONER AND BOOM KICKOUT