Komatsu PC20R-8, PC25R-8, PC27R-8 Hydraulic Excavator Shop Manual SEBM010801

Description

• Model List:
  • PC20R-8 Hydraulic Excavator
  • PC25R-8 Hydraulic Excavator
  • PC27R-8 Hydraulic Excavator

• 1. COVER
• 2. CONTENTS
• 3. GENERAL
• 3.1. GENERAL ASSEMBLY 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. SWING CIRCLE
• 4.3. SWING MACHINERY
• 4.4. TRACK FRAME
• 4.5. RECOIL SPRING
• 4.6. HYDRAULIC PIPING
• 4.7. HYDRAULIC CIRCUIT DIAGRAM
• 4.8. HYDRAULIC TANK
• 4.9. HYDRAULIC PUMP
• 4.10. CONTROL VALVE
• 4.11. CLSS
• 4.12. CENTER SWIVEL JOINT
• 4.13. ELECTRICAL CIRCUIT DIAGRAM
• 4.14. MACHINE MONITOR SYSTEM
• 5. TESTING AND ADJUSTING
• 5.1. STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
• 5.2. STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
• 5.3. STANDARD VALUE TABLE FOR ELECTRICAL PARTS
• 5.4. TOOLS FOR TESTING,ADJUSTING,AND TROUBLESHOOTING
• 5.5. MEASURING ENGINE SPEED
• 5.6. MEASURING EXHAUST COLOR
• 5.7. ADJUSTING VALVE CLEARANCE
• 5.8. MEASURING COMPRESSION PRESSURE
• 5.9. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 5.10. MEASURING ENGINE OIL PRESSURE
• 5.11. TESTING AND ADJUSTING ALTERNATOR FAN BELT TENSION
• 5.12. MEASURING SPROCKET WEAR
• 5.13. TESTING AND ADJUSTING TRACK SHOE TENSION
• 5.14. TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT,SWING,TRAVEL CIRCUIT
• 5.15. TESTING AND ADJUSTING LS DIFFERENTIAL PRESSURE
• 5.16. ADJUSTING PC VALVE
• 5.17. TESTING AND ADJUSTING CONTROL CIRCUIT PRESSURE
• 5.18. MEASURING OUTPUT PRESSURE OF PPC LOCK VALVE AND TRAVEL BOOST VALVE
• 5.19. TESTING PPC VALVE OUTPUT PRESSURE AND SWING HOLDING BRAKE INLET PORT PRESSURE
• 5.20. ADJUSTING WORK EQUIPMENT,SWING PPC VALVE
• 5.21. TESTING AND ADJUSTING TRAVEL DEVIATION
• 5.22. MEASURING OIL LEAKAGE INSIDE CYLINDER
• 5.23. RELEASING REMAINING PRESSURE FROM HYDRAULIC CIRCUIT
• 5.24. RELEASING REMAINING PRESSURE FROM HYDRAULIC TANK
• 5.25. PRESSURIZING HYDRAULIC TANK
• 5.26. BLEEDING AIR
• 5.27. TROUBLESHOOTING
• 5.27.1. POINTS TO REMEMBER WHEN TROUBLESHOOTING
• 5.27.2. SEQUENCE OF EVENTS IN TROUBLESHOOTING
• 5.27.3. POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
• 5.27.4. CHECKS BEFORE TROUBLESHOOTING
• 5.27.5. TYPE OF CONNECTOR AND POSITION OF INSTALLATION
• 5.27.6. CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
• 5.27.7. METHOD OF USING TROUBLESHOOTING CHARTS
• 5.27.8. TROUBLESHOOTING OF ELECTRICAL SYSTEM(E MODE)
• 5.27.9. TROUBLESHOOTING OF HYDRAULIC,MECHANICAL SYSTEM(H MODE)
• 5.27.10. TROUBLESHOOTING OF MACHINE MONITOR SYSTEM(M 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. SKETCHES OF SPECIAL TOOLS
• 6.5. STARTING MOTOR
• 6.5.1. REMOVAL AND INSTALLATION
• 6.6. ALTERNATOR
• 6.6.1. REMOVAL AND INSTALLATION
• 6.7. FUEL INJECTION PUMP
• 6.7.1. REMOVAL
• 6.7.2. INSTALLATION
• 6.8. NOZZLE HOLDER
• 6.8.1. REMOVAL AND INSTALLATION
• 6.9. WATER PUMP
• 6.9.1. REMOVAL
• 6.9.2. INSTALLATION
• 6.10. THERMOSTAT
• 6.10.1. REMOVAL AND INSTALLATION
• 6.11. ENGINE FRONT SEAL
• 6.11.1. REMOVAL AND INSTALLATION
• 6.12. ENGINE REAR SEAL
• 6.12.1. REMOVAL AND INSTALLATION
• 6.13. ENGINE,HYDRAULIC PUMP
• 6.13.1. REMOVAL
• 6.13.2. INSTALLATION
• 6.14. FUEL TANK
• 6.14.1. REMOVAL AND INSTALLATION
• 6.15. DAMPER
• 6.15.1. REMOVAL AND INSTALLATION
• 6.16. CENTER SWIVEL JOINT
• 6.16.1. REMOVAL AND INSTALLATION
• 6.16.2. DISASSEMBLY AND ASSEMBLY
• 6.17. TRAVEL MOTOR
• 6.17.1. REMOVAL AND INSTALLATION
• 6.17.2. DISASSEMBLY AND ASSEMBLY(PHV190(FOR PC20R8))
• 6.17.3. DISASSEMBLY AND ASSEMBLY(PHV200(FOR PC25R8),PHV250(FOR PC27R8))
• 6.18. SPROCKET
• 6.18.1. REMOVAL AND INSTALLATION
• 6.19. SWING MOTOR,SWING MACHINERY
• 6.19.1. REMOVAL
• 6.19.2. INSTALLATION
• 6.19.3. DISASSEMBLY
• 6.19.4. ASSEMBLY
• 6.20. SWING MOTOR(LMF16AB(FOR PC25R8 AND PC27R8)
• 6.20.1. DISASSEMBLY
• 6.20.2. ASSEMBLY
• 6.21. REVOLVING FRAME
• 6.21.1. REMOVAL
• 6.21.2. INSTALLATION
• 6.22. SWING CIRCLE
• 6.22.1. REMOVAL AND INSTALLATION
• 6.23. IDLER
• 6.23.1. REMOVAL AND INSTALLATION
• 6.23.2. DISASSEMBLY
• 6.23.3. ASSEMBLY
• 6.24. RECOIL SPRING
• 6.24.1. REMOVAL AND INSTALLATION
• 6.24.2. DISASSEMBLY AND ASSEMBLY
• 6.25. TRACK ROLLER
• 6.25.1. REMOVAL AND INSTALLATION
• 6.25.2. DISASSEMBLY
• 6.25.3. ASSEMBLY
• 6.26. CARRIER ROLLER
• 6.26.1. REMOVAL AND INSTALLATION
• 6.26.2. DISASSEMBLY AND ASSEMBLY
• 6.27. RUBBER SHOE
• 6.27.1. REMOVAL AND INSTALLATION
• 6.28. STEEL SHOE
• 6.28.1. REMOVAL AND INSTALLATION
• 6.29. HYDRAULIC TANK
• 6.29.1. REMOVAL AND INSTALLATION
• 6.30. HYDRAULIC COOLER
• 6.30.1. REMOVAL AND INSTALLATION
• 6.31. HYDRAULIC PUMP
• 6.31.1. REMOVAL AND INSTALLATION
• 6.32. MAIN PUMP(LPV30(FOR PC25R8 AND PC27R8)
• 6.32.1. REMOVAL AND INSTALLATION
• 6.33. BUCKET CYLINDER
• 6.33.1. REMOVAL
• 6.33.2. INSTALLATION
• 6.34. BOOM SWING CYLINDER
• 6.34.1. REMOVAL
• 6.34.2. INSTALLATION
• 6.35. BLADE CYLINDER
• 6.35.1. REMOVAL AND INSTALLATION
• 6.36. HYDRAULIC CYLNDER
• 6.36.1. REMOVAL AND INSTALLATION
• 6.37. BOOM SWING BRACKET
• 6.37.1. REMOVAL
• 6.37.2. INSTALLATION
• 6.38. BLADE
• 6.38.1. REMOVAL AND INSTALLATION
• 6.39. OPERATORS CAB
• 6.39.1. REMOVAL AND INSTALLATION
• 6.40. CANOPY
• 6.40.1. REMOVAL AND INSTALLATION
• 6.41. FLOOR FRAME
• 6.41.1. REMOVAL
• 6.41.2. INSTALLATION
• 7. MAINTENANCE STANDARD
• 7.1. SWING CIRCLE
• 7.2. SWING MACHINERY
• 7.3. TRACK FRAME,RECOIL SPRING
• 7.4. HYDRAULIC PUMP(LPV30)
• 7.5. CONTROL VALVE
• 7.6. CENTER SWIVEL JOINT
• 7.7. SWING MOTOR
• 7.8. TRAVEL MOTOR
• 7.9. PPC VALVE
• 7.10. HYDRAULIC CYLINDER
• 7.11. WORK EQUIPMENT
• 8. OTHERS
• 8.1. HYDRAULIC PIPING PC20R8
• 8.2. HYDRAULIC PIPING PC25R,27R8
• 8.3. HYDRAULIC CIRCUIT DIAGRAM PC20R8
• 8.4. HYDRAULIC CIRCUIT DIAGRAM PC25R8
• 8.5. HYDRAULIC CIRCUIT DIAGRAM PC27R8
• 8.6. CLSS 10A. OPERATION OF THE SYSTEM AS A WHOLE PC20R8
• 8.7. CLSS 10B. OPERATION OF THE SYSTEM AS A WHOLE PC25R,PC27R8
• 8.8. ELECTRICAL CIRCUIT DIAGRAM PC20R,25R,27R8