Komatsu PC270LL-7L Logging Excavator Shop Manual CEBD014600

Description

• Model List:
  • PC270LL-7L Logging Excavator

• 0.0.1. IMPORTANT SAFETY NOTICE
• 0.0.2. GENERAL PRECAUTIONS
• 0.0.3. PREPARATIONS FOR WORK
• 0.0.4. PRECAUTIONS DURING WORK
• 0.1. GENERAL
• 0.2. HOW TO READ THE SHOP MANUAL
• 0.2.1. VOLUMES
• 0.2.2. DISTRIBUTION AND UPDATING
• 0.2.3. FILING METHOD
• 0.2.4. REVISED EDITION MARK
• 0.2.5. REVISIONS
• 0.2.6. SYMBOLS
• 0.3. HOISTING INSTRUCTIONS
• 0.3.1. HOISTING
• 0.3.2. WIRE ROPES
• 0.4. COATING MATERIALS
• 0.5. STANDARD TIGHTENING TORQUE
• 0.5.1. STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS
• 0.5.2. TIGHTENING TORQUE OF HOSE NUTS
• 0.5.3. TIGHTENING TORQUE OF SPLIT FLANGE BOLTS
• 0.5.4. TIGHTENING TORQUE FOR FLARED NUTS
• 0.6. ELECTRIC WIRE CODE
• 0.6.1. CLASSIFICATION BY THICKNESS
• 0.6.2. CLASSIFICATION BY COLOR AND CODE
• 0.7. CONVERSION TABLES
• 0.7.1. METHOD OF USING THE CONVERSION TABLE
• 1. GENERAL
• 1.1. SPECIFICATION DIMENSION DRAWINGS
• 1.1.1. PC270LL7L
• 1.1.2. DIMENSIONS
• 1.1.3. WORKING RANGES
• 1.2. WEIGHT TABLE
• 1.3. FUEL, COOLANT AND LUBRICANTS
• 1.3.1. PC270LL7L
• 2. STRUCTURE AND FUNCTION
• 2.1. ENGINE RELATED PARTS
• 2.2. RADIATOR . OIL COOLER . AFTERCOOLER
• 2.3. POWER TRAIN
• 2.4. FINAL DRIVE
• 2.5. SWING CIRCLE
• 2.6. TRACK FRAME . RECOIL SPRING
• 2.7. IDLER
• 2.8. TRACK ROLLER
• 2.9. TRACK SHOE
• 2.10. TRIPLE GROUSER SHOE
• 2.11. HYDRAULIC EQUIPMENT
• 2.11.1. LS(PC)EPC VALVE
• 2.12. CONTROL VALVE
• 2.13. SELF PRESSURE REDUCING VALVE
• 2.13.1. MAIN RELIEF VALVE
• 2.13.2. VARIABLE PRESSURE COMPENSATION VALVE
• 2.14. CLSS
• 2.15. SWING MOTOR
• 2.15.1. RELIEF VALVE PORTION
• 2.15.2. SWING LOCK
• 2.16. REVERSE PREVENTION VALVE
• 2.17. CENTER SWIVEL JOINT
• 2.17.1. TRAVEL MOTOR
• 2.17.2. PARKING BRAKE
• 2.17.3. TRAVEL JUNCTION VALVE
• 2.18. VALVE CONTROL
• 2.18.1. CONNECTIONS
• 2.18.2. LEVER POSITIONS
• 2.19. WORK EQUIPMENT . SWING PPC VALVE
• 2.20. TRAVEL PPC VALVE
• 2.21. SERVICE VALVE
• 2.22. SOLENOID VALVE
• 2.23. ATTACHMENT SOLENOID VALVE
• 2.24. PPC ACCUMULATOR
• 2.25. BOOM HYDRAULIC DRIFT PREVENTION VALVE
• 2.26. LIFT CHECK VALVE
• 2.27. HYDRAULIC CYLINDERS
• 2.27.1. BOOM CYLINDER
• 2.27.2. ARM CYLINDER
• 2.27.3. BUCKET CYLINDER
• 2.28. WORK EQUIPMENT
• 2.28.1. HOURS
• 2.28.2. HOURS
• 2.28.3. DIMENSION OF ARM
• 2.28.4. DIMENSION OF BUCKET
• 2.29. AIR CONDITIONER
• 2.29.1. PIPING
• 2.30. ENGINE CONTROL
• 2.30.1. FUEL CONTROL DIAL
• 2.30.2. GOVERNOR MOTOR
• 2.30.3. ENGINE THROTTLE AND PUMP CONTROLLER
• 2.30.4. INPUT AND OUTPUT SIGNALS
• 2.31. ELECTRONIC CONTROL SYSTEM
• 2.31.1. MACHINE CONTROL SYSTEM DIAGRAM
• 2.31.2. ENGINE AND PUMP CONTROL FUNCTION
• 2.31.3. SWING CONTROL FUNCTION WITH SOFT SWING
• 2.32. MULTI MONITOR SYSTEM
• 2.32.1. MONITOR PANEL
• 2.32.2. MONITOR CONTROL, DISPLAY PORTION MONITOR PORTION
• 2.32.3. MONITOR ITEMS AND DISPLAY
• 2.32.4. MAINTENANCE FUNCTION
• 2.33. SENSORS
• 2.33.1. ENGINE OIL LEVEL SENSOR
• 2.33.2. ENGINE OIL PRESSURE SENSOR (FOR LOW PRESSURE)
• 2.33.3. COOLANT TEMPERATURE SENSOR
• 2.33.4. HYDRAULIC OIL TEMPERATURE SENSOR
• 2.33.5. FUEL LEVEL SENSOR
• 2.33.6. AIR CLEANER CLOGGING SENSOR
• 2.34. CAB RISER AND RELATED PARTS
• 2.34.1. POWER CONTROL
• 2.35. CAB RISER HYDRAULIC SYSTEM
• 3. TESTING, ADJUSTING AND TROUBLESHOOTING
• 3.1. STANDARD VALUE TABLES
• 3.1.1. ENGINE
• 3.1.2. CHASSIS
• 3.2. TESTING AND ADJUSTING
• 3.2.1. SERVICE TOOLS
• 3.2.2. ENGINE
• 3.2.3. BELT TENSION AIR COMPRESSOR
• 3.2.4. EMERGENCY ESCAPE FROM ENGINE CONTROL FAILURE
• 3.2.5. SWING CIRCLE BEARINGS
• 3.2.6. TRACK SHOE TENSION
• 3.2.7. SPROCKET
• 3.2.8. OIL PRESSURE
• 3.2.9. PPC VALVE OUTPUT PRESSURE
• 3.2.10. WORK EQUIPMENT AND SWING PPC VALVE
• 3.2.11. WORK EQUIPMENT HYDRAULIC DRIFT
• 3.2.12. RELEASING PRESSURE IN HYDRAULIC CIRCUIT
• 3.2.13. OIL LEAKAGE
• 3.2.14. AIR BLEEDING OF VARIOUS PARTS
• 3.2.15. SOFT SWING ADJUSTMENTS
• 3.2.16. DIODE INSPECTION PROCEDURES
• 3.2.17. CAB DOOR STOP ADJUSTMENT
• 3.2.18. MULTIMONITOR PANEL
• 3.2.19. ELECTRICAL SYSTEM TROUBLESHOOTING
• 3.2.20. PM TUNE UP SERVICE
• 3.3. TROUBLESHOOTING
• 3.3.1. TROUBLESHOOTING GENERAL
• 3.3.2. TROUBLESHOOTING ELECTRICAL SYSTEM (EMODE)
• 3.3.3. TROUBLESHOOTING MONITOR ELECTRICAL (EMODE)
• 4. DISASSEMBLY AND ASSEMBLY
• 4.1. METHOD OF USING MANUAL
• 4.2. PRECAUTIONS DURING OPERATION
• 4.2.1. PRECAUTIONS WHEN CARRYING OUT REMOVAL WORK
• 4.2.2. PRECAUTIONS WHEN CARRYING OUT INSTALLATION WORK
• 4.2.3. PRECAUTIONS WHEN COMPLETING THE OPERATIONS
• 4.2.4. OTHER PRECAUTIONS
• 4.3. SPECIAL TOOL LIST
• 4.4. SKETCHES OF SPECIAL TOOLS
• 4.5. ENGINE
• 4.5.1. ALTERNATOR
• 4.5.2. CYLINDER HEAD
• 4.5.3. ENGINE FRONT SEAL
• 4.5.4. ENGINE OIL COOLER
• 4.5.5. ENGINE REAR SEAL
• 4.5.6. FUEL INJECTION PUMP
• 4.6. HYDRAULIC OIL COOLER
• 4.6.1. REMOVAL
• 4.6.2. INSTALLATION
• 4.7. ENGINE AND HYDRAULIC PUMPS
• 4.7.1. REMOVAL
• 4.7.2. INSTALLATION
• 4.8. TRAVEL MOTOR AND FINAL DRIVE
• 4.9. TRACK AND CARRIER ROLLER
• 4.9.1. REMOVAL
• 4.9.2. INSTALLATION
• 4.9.3. DISASSEMBLY
• 4.9.4. ASSEMBLY
• 4.10. IDLER AND RECOIL SPRING
• 4.10.1. EXPANSION OF TRACK SHOE
• 4.10.2. ASSEMBLY
• 4.11. SWING CIRCLE
• 4.11.1. REMOVAL
• 4.11.2. INSTALLATION
• 4.12. REVOLVING FRAME
• 4.12.1. REMOVAL
• 4.12.2. INSTALLATION
• 4.13. CENTER SWIVEL JOINT
• 4.14. HYDRAULIC PUMP INPUT SHAFT OIL SEAL
• 4.15. HYDRAULIC CYLINDER
• 4.16. AIR CONDITIONER
• 4.17. GOVERNOR PUMP CONTROLLER
• 4.17.1. REMOVAL
• 4.17.2. INSTALLATION
• 5. OTHERS
• 5.1. ELECTRICAL
• 5.1.1. CIRCUIT DIAGRAM SHEET 1 (PART 1 OF 3)
• 5.1.2. CIRCUIT DIAGRAM SHEET 1 (PART 2 OF 3)
• 5.1.3. CIRCUIT DIAGRAM SHEET 1 (PART 3 OF 3)
• 5.1.4. CIRCUIT DIAGRAM SHEET 2 (PART 1 OF 1)
• 5.1.5. CIRCUIT DIAGRAM SHEET 3 (PART 1 OF 2)
• 5.1.6. CIRCUIT DIAGRAM SHEET 3 (PART 2 OF 2)
• 5.1.7. CIRCUIT DIAGRAM SHEET 4 (PART 1 OF 2)
• 5.1.8. CIRCUIT DIAGRAM SHEET 4 (PART 2 OF 2)
• 5.2. HYDRAULIC
• 5.2.1. HYDRAULIC DIAGRAM (SHEET 1 OF 4) FOLDOUT 11
• 5.2.2. HYDRAULIC DIAGRAM (SHEET 2 OF 4) FOLDOUT 12
• 5.2.3. HYDRAULIC DIAGRAM (SHEET 3 OF 4) FOLDOUT 13