Komatsu HA250, HA270 Articulated Dump Truck Shop Manual SEBMHA250104

Description

• Model List:
  • HA250 Articulated Dump Truck
  • HA270 Articulated Dump Truck

• 1. COVER
• 2. CONTENTS
• 3. GENERAL INSTRUCTION
• 3.1. FOREWORD
• 3.2. TYPE OF SEALINGS/LOCKING COMPOUNDS AND LUBRICANTS
• 3.3. WEIGHTS AND MEASURES
• 3.4. TORQUE LIMIT TABLE
• 3.5. SAFETY IN SERVICE WORK SHOPS
• 3.6. PRECAUTION FOR DISASSEMBLY AND ASSEMBLY
• 3.7. GENERAL LOCATION
• 3.8. DRIVE LINE VIEW
• 3.9. MACHINE SPECIFICATION (HA2701)
• 3.10. MACHINE SPECIFICATION (HA2501)
• 3.11. MACHINE SPECIFICATION (HA2703 HA2503)
• 3.12. PERFORMANCE CHART (HA2703)
• 3.13. EXHAUST BRAKE CAPACITY DIAGRAMHA270 HA2703
• 3.14. PERFORMANCE CHART (HA2503)
• 3.15. EXHAUST BRAKE CAPACITY DIAGRAM (HA2503)
• 3.16. FILLING CAPACITIES
• 3.17. OIL AND FLUID SPECIFICATION
• 3.18. TRANSMISSION OIL LIST
• 4. ENGINE
• 5. TRANSMISSION
• 5.1. STRUCTURE AND FUNCTION
• 5.1.1. GENERAL DESCRIPTION
• 5.1.2. SPEED CHANGE DIAGRAM
• 5.1.3. CONTROL VALVE WITH LOCKUP VALVE
• 5.1.4. OIL CIRCUIT DIAGRAM
• 5.1.5. OIL CIRCUIT DIAGRAM WITH ELECTRICSHIFT UNIT AND CONVERTER LOCKUP CLUTCH WORK
• 5.1.6. INDUCTIVE TRANSMITTER
• 5.2. TESTING AND ADJUSTING
• 5.2.1. STANDARD VALUES
• 5.2.2. SHIFTING POINTS, AUTOMATIC TRANSMISSION
• 5.2.3. MEASURING OIL LEVEL AND TEMPERATURE
• 5.2.4. MEASURING PRESSURE AND DELIVERY AND TEMPERATURE
• 5.2.5. MEASURING LOCATION
• 5.2.6. TESTING UNITS
• 5.2.7. ADJUSTING OF INDUCTIVE TRANSMITTER
• 5.2.8. STALL PERFORMANCE
• 5.2.9. ADJUSTING OF INTER AXLE DIFFERENTIAL LOCK
• 5.3. DISASSEMBLY AND ASSEMBLY
• 5.3.1. TRANSMISSION ASSY
• 5.3.2. TRANSMISSION CONTROL VALVE
• 5.3.3. TORQUE CONVERTER
• 5.3.4. TRANSMISSION
• 5.3.5. INTERMED DIFERENTIAL
• 5.3.6. SPECIAL TOOLS
• 5.4. MAINTENANCE STANDARD
• 5.4.1. OIL CONTAMINATION
• 5.5. TROUBLESHOOTING
• 5.5.1. TENPERATURE TOO HIGH
• 5.5.2. NO FUNCTION ALL GEARS
• 5.5.3. NO FUNCTION 1st AND 2nd GEAR
• 5.5.4. CONTROL PRESSURE TOO LOW IN ALL GEARS
• 6. DRIVELINE, BRAKES AND WHEELS
• 6.1. STRUCTURE AND FUNCTION
• 6.1.1. FRONT AND REAR DIFFERENTIAL
• 6.1.2. FRONT REDUCTION GEAR
• 6.1.3. BRAKES
• 6.1.4. AUTOMATIC SLACK ADJUSTER
• 6.1.5. TYRES
• 6.2. TESTING AND ADJUSTING
• 6.2.1. MEASURING OIL LEVELS
• 6.2.2. FRONT WHEEL BEARING ADJUSTMENT
• 6.2.3. ADJUSTING OF REAR DIFFERENTIAL LOCK
• 6.2.4. MAIN BRAKE
• 6.2.5. PARK BRAKE
• 6.3. DISASSEMBLY AND ASSEMBLY
• 6.3.1. FRONT DIFFERENTIAL
• 6.3.2. REAR DIFFERENTIAL
• 6.3.3. FRONT REDUCTION GEAR
• 6.3.4. TANDEM HOUSING
• 6.3.5. TYRES
• 6.3.6. MASTER CYLINDER
• 6.3.7. BRAKE CALLIPER
• 6.3.8. PARKING BRAKE CALLIPER
• 6.3.9. AUTOMATIC SLACK ADJUSTER
• 6.3.10. SPECIAL TOOLS
• 6.4. MAINTENANCE STANDARD
• 6.4.1. BRAKES
• 6.5. TROUBLE SHOOTING
• 6.5.1. REAR DIFFERENTIAL
• 6.5.2. SERVICE BRAKE
• 6.5.3. PARKING BRAKE
• 7. AIR SYSTEM
• 7.1. STRUCTURE AND FUNCTION
• 7.1.1. AIR SYSTEM (65395/60890)
• 7.1.2. AIR SYSTEM (65396/60891)
• 7.1.3. AIR CIRCUIT DIAGRAM (311001311015/301001301017)
• 7.1.4. AIR CIRCUIT DIAGRAM (HA313001/303001)
• 7.1.5. AIR SUPPLY
• 7.1.6. FRONT BRAKES (CIRCUIT 1)
• 7.1.7. REAR BRAKES (CIRCUIT 2)
• 7.1.8. PARKING BRAKE (CIRCUIT 3)
• 7.1.9. OTHER AIR OPERATED SYSTEMS
• 7.1.10. GOVERNOR
• 7.1.11. SAFETY VALVE
• 7.1.12. MOISTURE REPELLENT INJECTOR
• 7.1.13. AUTOMATIC DRAIN VALVE
• 7.1.14. SINGLE CHECK VALVE
• 7.1.15. TEST CONNECTOR
• 7.1.16. LOW PRESSURE INDICATOR
• 7.1.17. FOURCIRCUIT PROTECTION VALVE
• 7.1.18. DUAL FOOT BRAKE VALVE
• 7.1.19. STOP LIGHT SWITCH
• 7.1.20. RELAY VALVE
• 7.1.21. PARKING BRAKE LOW PRESSURE VALVE
• 7.1.22. PARKING BRAKE CONTROL VALVE
• 7.1.23. MAIN BRAKE CHAMBER
• 7.1.24. PARKING BRAKE CHAMBER
• 7.1.25. QUICK RELEASE VALVE
• 7.1.26. PRESSURE PROTECTION VALVE
• 7.1.27. PRESSURE REDUCING VALVE
• 7.1.28. SOLENOID VALVE
• 7.1.29. AIR DRYER
• 7.2. TESTING AND ADJUSTING
• 7.2.1. STANDARD VALUES
• 7.3. DISASSEMBLY AND ASSEMBLY
• 7.3.1. GOVERNOR
• 7.3.2. MOISTURE REPELLENT INJECTOR
• 7.3.3. SINGLE CHECK VALVE
• 7.3.4. FOUR CIRCUIT PROTECTION VALVE
• 7.3.5. PARKING BRAKE CONTROL VALVE
• 7.3.6. RELAY VALVE
• 7.3.7. MAIN BRAKE CHAMBER
• 7.3.8. QUICK RELEASE VALVE
• 7.3.9. SOLENOID VALVE
• 7.4. MAINTENANCE STANDARD
• 7.4.1. GOVERNOR
• 7.4.2. PRESSURE PROTECTION VALVE
• 7.4.3. PRESSURE REDUCING VALVE
• 7.4.4. LOW PRESSURE INDICATOR
• 7.5. TROUBLE SHOOTING
• 7.5.1. DIAGRAM
• 8. HYDRAULIC SYSTEM
• 8.1. STRUCTURE AND FUNCTION
• 8.1.1. HYDRAULIC SYSTEM
• 8.1.2. HYDRAULIC CIRCUIT ARRANGEMENT
• 8.1.3. HYDRAULIC CIRCUIT DIAGRAM
• 8.1.4. HYDRAULIC RESERVOIR
• 8.1.5. HYDRAULIC PUMP
• 8.1.6. DEMAND VALVE
• 8.1.7. STEERING CIUCUIT
• 8.1.8. ORBITROL VALVE
• 8.1.9. STEERING VALVE
• 8.1.10. STEERING SYLINDER
• 8.1.11. EMERGENCY STEERING CIRCUIT
• 8.1.12. EMERGENCY STEERING PUMP
• 8.1.13. CONNECTING VALVE
• 8.1.14. FLOW INDICATOR VALVE
• 8.1.15. TIPPING CIRCUIT
• 8.1.16. TIP VALVE
• 8.2. TESTING AND ADJUSTING
• 8.2.1. STANDARD VALUES
• 8.2.2. MEASURING OIL LEVEL
• 8.2.3. MEASURING OIL TEMPERATURE
• 8.2.4. MEASURING PUMP DELIVERY
• 8.2.5. TESTING STEERING SYSTEM
• 8.2.6. TESTING TIP SYSTEM
• 8.3. DISASSEMBLY AND ASSEMBLY
• 8.3.1. HYDRAULIC PUMP
• 8.3.2. FILTER
• 8.3.3. CONNECTING VALVE
• 8.3.4. FLOW INDICATOR
• 8.3.5. STEERING VALVE
• 8.3.6. ORBITROL VALVE
• 8.3.7. TIP VALVE
• 8.3.8. TIP CYLINDER
• 8.3.9. SPECIAL TOOLS
• 8.4. TROUBLE SHOOTING
• 8.4.1. DIAGRAM
• 9. ELECTRICAL SYSTEM
• 9.1. STRUCTURE AND FUNCTION
• 9.1.1. FUNCTION OF ELECTRICAL COMPONENTS
• 9.1.2. FUNCTION OF MAJOR CIRCUITS
• 9.1.3. AUTOMATIC TRANSMISSION CIRCUIT
• 10. FRONT CHASSIS
• 10.1. STRUCTURE AND FUNCTION
• 10.1.1. FRAME
• 10.1.2. SUSPENSION
• 11. REAR CHASSIS
• 11.1. STRUCTURE AND FUNCTION
• 11.1.1. FRAME
• 11.1.2. ARTICULATION HINGE
• 11.1.3. BODY
• 11.1.4. TAIL GATE
• 11.2. TESTING AND ADJUSTING
• 11.2.1. TURNING RING CLEARANCE
• 11.3. DISASSEMBLY AND ASSEMBLY
• 11.3.1. GAS CYLINDER
• 11.3.2. FILLING OF GAS CYLINDER
• 11.3.3. BODY BUSHINGS
• 11.3.4. TURNING RING
• 11.3.5. ARTICULATION HINGE
• 12. ACCESSORIES
• 12.1. FILLING INSTRUCTIONS FOR AIR CONDITION COOLING AGENT