Komatsu WA250-5, WA250PT-5 Wheel Loader Shop Manual SEBM029702

Description

• Model List:
  • WA250-5 Wheel Loader
  • WA250PT-5 Wheel Loader

• 1. COVER
• 2. CONTENTS
• 3. GENERAL
• 3.1. GENERAL ASSEMBLY DRAWINGS
• 3.2. SPECIFICATIONS
• 3.3. WEIGHT TABLE
• 3.4. LIST OF LUBRICANT AND COOLANT
• 4. STRUCTURE,FUNCTION AND MAINTENANCE STANDARD
• 4.1. ENGINE MOUNT AND TRANSFER MOUNT
• 4.2. DAMPER
• 4.3. COOLING SYSTEM
• 4.4. POWER TRAIN
• 4.5. POWER TRAIN SYSTEM DIAGRAM
• 4.6. DRIVE SHAFT (PROPELLER SHAFT)
• 4.7. HST HYDRAULIC PIPING DIAGRAM
• 4.8. HST PUMP
• 4.9. HIGHPRESSURE RELIEF VALVE
• 4.10. LOWPRESSURE RELIEF VALVE
• 4.11. HST CHARGE PUMP
• 4.12. SPEEDRELATED VALVE (DA VALVE)
• 4.13. HIGHPRESSURE CUTOFF VALVE
• 4.14. HST MOTOR
• 4.15. EP SERVO VALVE
• 4.16. HA SERVO VALVE
• 4.17. FORWARDREVERSE SHUTTLE VALVE
• 4.18. TRANSFER
• 4.19. TRANSFER OIL COOLER
• 4.20. CLUTCH SOLENOID VALVE
• 4.21. AXLE
• 4.22. DIFFERENTIAL
• 4.23. LIMITEDSLIP DIFFERENTIAL
• 4.24. FINAL DRIVE
• 4.25. AXLE MOUNTING AND CENTER HINGE PIN
• 4.26. STEERING PIPING
• 4.27. STEERING COLUMN
• 4.28. PRIORITY VALVE
• 4.29. ORBITROLL VALVE
• 4.30. WAY RESTRICTOR VALVE
• 4.31. STEERING CYLINDER
• 4.32. EMERGENCY STEERING PIPING
• 4.33. EMERGENCY STEERING VALVE
• 4.34. BRAKE PIPING
• 4.35. BRAKE VALVE
• 4.36. INCHING VALVE
• 4.37. CHARGE VALVE
• 4.38. ACCUMULATOR (FOR BRAKE)
• 4.39. SLACK ADJUSTER
• 4.40. BRAKE
• 4.41. PARKING BRAKE CONTROL
• 4.42. PARKING BRAKE
• 4.43. HYDRAULIC PIPING
• 4.44. WORK EQUIPMENT LEVER LINKAGE
• 4.45. HYDRAULIC TANK
• 4.46. GEAR PUMP UNIT
• 4.47. ACCUMULATOR (FOR PPC CIRCUIT)
• 4.48. LOCK VALVE
• 4.49. BYPASS VALVE
• 4.50. QUICK COUPLER SOLENOID VALVE
• 4.51. VALVE
• 4.52. ACCUMULATOR (FOR E.C.S.S.)
• 4.53. HYDRAULIC PIPING OF COOLING SYSTEM
• 4.54. COOLING FAN MOTOR
• 4.55. WORK EQUIPMENT CONTROL VALVE
• 4.56. WORK EQUIPMENT PPC VALVE
• 4.57. ATTACHMENT PPC VALVE (IF EQUIPPED)
• 4.58. WORK EQUIPMENT LINKAGE
• 4.59. BUCKET
• 4.60. CONTROL OF BUCKET POSITIONER,BOOM KICKOUT,AND DUMP SPEED
• 4.61. WORK EQUIPMENT CYLINDER
• 4.62. AIR CONDITIONER
• 4.63. MACHINE MONITORING SYSTEM
• 4.64. MACHINE MONITOR
• 4.65. LIST OF ITEMS DISPLAYED ON MONITOR
• 4.66. ELECTRICAL SYSTEM (HST CONTROLLER SYSTEM)
• 4.67. HST CONTROLLER
• 4.68. FUNCTION OF SELECTING FORWARDREVERSE SELECTOR SWITCH
• 4.69. ENGINE START CIRCUIT
• 4.70. ENGINE STOP CIRCUIT
• 4.71. PREHEATING CIRCUIT (AUTOMATIC PREHEATING SYSTEM)
• 4.72. PARKING BRAKE CIRCUIT
• 4.73. ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM
• 4.74. COUPLER PLUNGER CONTROL SYSTEM
• 4.75. SENSORS
• 5. TESTING AND ADJUSTING
• 5.1. STANDARD VALUE TABLE FOR ENGINE
• 5.2. STANDARD VALUE TABLE FOR CHASSIS
• 5.3. TESTING AND ADJUSTING
• 5.4. TROUBLESHOOTING
• 6. DISASSEMBLY AND ASSEMBLY
• 6.1. HOW TO READ THIS MANUAL
• 6.2. PRECAUTIONS WHEN PERFORMING OPERATION
• 6.3. SPECIAL TOOL LIST
• 6.4. SKETCHES OF SPECIAL TOOLS
• 6.5. REMOVAL,INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY
• 6.6. REMOVAL,INSTALLATION OF NOZZLE HOLDER ASSEMBLY
• 6.7. REMOVAL,INSTALLATION OF CYLINDER HEAD ASSEMBLY
• 6.8. REMOVAL,INSTALLATION OF ENGINE ASSEMBLY
• 6.9. REMOVAL,INSTALLATION OF RADIATOR ASSEMBLY
• 6.10. REMOVAL,INSTALLATION OF AIR AFTERCOOLER
• 6.11. REMOVAL,INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY
• 6.12. REMOVAL,INSTALLATION OF COOLING FAN AND MOTOR ASSEMBLY
• 6.13. REMOVAL,INSTALLATION OF FUEL TANK ASSEMBLY
• 6.14. REMOVAL,INSTALLATION OF TRANSFER
• 6.15. DISASSEMBLY,ASSEMBLY OF TRANSFER ASSEMBLY
• 6.16. REMOVAL,INSTALLATION OF PARKING BRAKE ASSEMBLY
• 6.17. DISASSEMBLY,ASSEMBLY OF PARKING BRAKE ASSEMBLY
• 6.18. REMOVAL,INSTALLATION OF FRONT AXLE ASSEMBLY
• 6.19. REMOVAL,INSTALLATION OF REAR AXLE ASSEMBLY
• 6.20. DISASSEMBLY,ASSEMBLY OF AXLE HOUSING ASSEMBLY
• 6.21. DISASSEMBLY,ASSEMBLY OF DIFFERENTIAL ASSEMBLY
• 6.22. REMOVAL,INSTALLATION OF HST PUMP AND 4GEAR PUMP ASSEMBLY
• 6.23. DISASSEMBLY AND ASSEMBLY OF HST PUMP ASSEMBLY
• 6.24. REMOVAL,INSTALLATION OF HST MOTOR 1 ASSEMBLY
• 6.25. REMOVAL,INSTALLATION OF HST MOTOR 2 ASSEMBLY
• 6.26. DISASSEMBLY AND ASSEMBLY OF HST MOTOR ASSEMBLY
• 6.27. REMOVAL,INSTALLATION OF WORK EQUIPMENT CONTROL VALVE ASSEMBLY
• 6.28. REMOVAL,INSTALLATION OF TRAVEL DAMPER VALVE ASSEMBLY
• 6.29. REMOVAL,INSTALLATION OF HYDRAULIC TANK ASSEMBLY
• 6.30. REMOVAL,INSTALLATION OF WORK EQUIPMENT ASSEMBLY
• 6.31. DISASSEMBLY,ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY
• 6.32. REMOVAL,INSTALLATION OF OPERATORS CAB ASSEMBLY
• 6.33. REMOVAL,INSTALLATION OF OPERATORS CAB GLASS(STUCK GLASS)
• 6.34. REMOVAL,INSTALLATION OF CENTER HINGE PIN
• 6.35. REMOVAL,INSTALLATION OF COUNTERWEIGHT
• 6.36. REMOVAL,INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY
• 6.37. REMOVAL,INSTALLATION OF AIR CONDITIONER COMPRESSOR ASSEMBLY
• 6.38. REMOVAL,INSTALLATION OF MONITOR PANEL
• 7. OTHERS
• 7.1. HYDRAULIC CIRCUIT DIAGRAM WA2505
• 7.2. HYDRAULIC CIRCUIT DIAGRAM WA250PT5
• 7.3. ELECTRICAL CIRCUIT DIAGRAM 1/4(1/4) (MACHINES EQUIPPED WITH ROPS CAB)
• 7.4. ELECTRICAL CIRCUIT DIAGRAM 1/4(2/4) (MACHINES EQUIPPED WITH ROPS CAB)
• 7.5. ELECTRICAL CIRCUIT DIAGRAM 1/4(3/4) (MACHINES EQUIPPED WITH ROPS CAB)
• 7.6. ELECTRICAL CIRCUIT DIAGRAM 1/4(4/4) (MACHINES EQUIPPED WITH ROPS CAB)
• 7.7. ELECTRICAL CIRCUIT DIAGRAM 2/4 (MACHINES EQUIPPED WITH ROPS CAB)
• 7.8. ELECTRICAL CIRCUIT DIAGRAM 3/4 (MACHINES EQUIPPED WITH ROPS CAB)
• 7.9. ELECTRICAL CIRCUIT DIAGRAM 4/4 (MACHINES EQUIPPED WITH ROPS CAB)
• 7.10. ELECTRICAL CIRCUIT DIAGRAM 1/4(1/4) (MACHINES EQUIPPED WITH ROPS CANOPY)
• 7.11. ELECTRICAL CIRCUIT DIAGRAM 1/4(2/4) (MACHINES EQUIPPED WITH ROPS CANOPY)
• 7.12. ELECTRICAL CIRCUIT DIAGRAM 1/4(3/4) (MACHINES EQUIPPED WITH ROPS CANOPY)
• 7.13. ELECTRICAL CIRCUIT DIAGRAM 1/4(4/4) (MACHINES EQUIPPED WITH ROPS CANOPY)
• 7.14. ELECTRICAL CIRCUIT DIAGRAM 2/4 (MACHINES EQUIPPED WITH ROPS CANPOY)
• 7.15. ELECTRICAL CIRCUIT DIAGRAM 3/4 (MACHINES EQUIPPED WITH ROPS CANOPY)
• 7.16. ELECTRICAL CIRCUIT DIAGRAM 4/4 (MACHINES EQUIPPED WITH ROPS CANOPY)