Komatsu PC128UU-2 Hydraulic Excavator Shop Manual SEBM018506

Description

• Model List:
  • PC128UU-2 Hydraulic Excavator

• 1. MAIN MENU
• 2. COVER
• 3. CONTENTS
• 4. GENERAL
• 4.1. GENERAL ASSEMBLY DRAWING
• 4.2. SPECIFICATIONS
• 4.3. WEIGHT TABLE
• 4.4. LIST OF LUBRICANTS AND COOLANT
• 5. STRUCTURE AND FUNCTION
• 5.2. RADIATOR AND OIL COOLER
• 5.3. POWER TRAIN
• 5.4. SWING CIRCLE
• 5.5. SWING MACHINERY
• 5.6. TRACK FRAME
• 5.7. IDLER CUSHION
• 5.8. HYDRAULIC EQUIPMENT LAYOUT DRAWING
• 5.9. VALVE CONTROL
• 5.10. HYDRAULIC TANK AND FILTER
• 5.11. HYDRAULIC PUMP (PISTON PUMP)
• 5.12. CONTROL VALVE
• 5.13. SUCTION SAFETY VALVE
• 5.14. CLSS
• 5.15. SELF PRESSURE REDUCING VALVE
• 5.16. CENTER SWIVEL JOINT
• 5.17. TRAVEL MOTOR
• 5.18. SWING MOTOR
• 5.19. SOLENOID VALVE
• 5.20. EPC SOLENOID VALVE
• 5.21. PPC ACCUMULATOR
• 5.22. PPC VALVE
• 5.23. AIR CONDITIONER PIPING
• 5.24. ELECTRIC EQUIPMENT LAYOUT DRAWING
• 5.25. ENGINE CONTROL
• 5.26. ELECTRIC CONTROL SYSTEM
• 5.27. SYSTEM
• 5.28. MONITOR SYSTEM
• 6. TESTING AND ADJUSTING
• 6.1. STANDARD VALUE TABLE FOR ENGINE
• 6.2. STANDARD VALUE TABLE FOR CHASSIS
• 6.3. STANDARD VALUE TABLE FOR ELECTRICAL PARTS
• 6.4. TESTING AND ADJUSTING
• 6.4.1. TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
• 6.4.2. MEASURING ENGINE SPEED
• 6.4.3. MEASURING EXHAUST COLOR
• 6.4.4. ADJUSTING VALVE CLEARANCE
• 6.4.5. MEASURING BLOWBY PRESSURE
• 6.4.6. MEASURING ENGINE OIL PRESSURE
• 6.4.7. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 6.4.8. TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION
• 6.4.9. ADJUSTING ENGINE SPEED SENSOR
• 6.4.10. ADJUSTING FUEL CONTROL CABLE
• 6.4.11. ADJUSTING ENGINE STOP SOLENOID LINKAGE
• 6.4.12. TESTING CLEARANCE OF SWING CIRCLE BEARING
• 6.4.13. MEASURING WEAR OF SPROCKET
• 6.4.14. TESTING AND ADJUSTING TRACK SHOE
• 6.4.15. TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING, TRAVEL CIRCUIT
• 6.4.16. TESTING AND ADJUSTING PC VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE)
• 6.4.17. TESTING AND ADJUSTING LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) AND LS DIFFERENTIAL PRESSURE
• 6.4.18. TESTING AND ADJUSTING CONTROL CIRCUIT OIL PRESSURE
• 6.4.19. TESTING SOLENOID VALVE OUTPUT PRESSURE
• 6.4.20. MEASURING PPC VALVE OUTPUT PRESSURE
• 6.4.21. ADJUSTING PPC VALVE
• 6.4.22. TESTING AND ADJUSTING TRAVEL DEVIATION
• 6.4.23. TESTING PARTS WHICH CAUSE HYDRAULIC DRIFT OF WORK EQUIPMENT
• 6.4.24. MEASURING OIL LEAKAGE FROM SWING MOTOR
• 6.4.25. MEASURING OIL LEAKAGE FROM TRAVEL MOTOR
• 6.4.26. BLEEDING FROM EACH PART
• 6.4.27. RELEASING RESIDUAL PRESSURE FROM HYDRAULIC CIRCUIT
• 6.4.28. RELEASING RESIDUAL PRESSURE FROM HYDRAULIC TANK
• 6.4.29. PROCEDURE OF TESTING DIODE
• 6.4.30. RESETTING PROCEDURE OF ELECTRIC SYSTEM AND CHECK OF ITS OPERATION
• 6.4.31. REPLACEMENT PROCEDURE OF POTENTIOMETERS
• 6.4.32. PM CLINIC INSPECTION TABLE
• 6.5. TROUBLESHOOTING
• 6.5.1. POINTS TO REMEMBER WHEN TROUBLESHOOTING
• 6.5.2. SEQUENCE OF EVENTS IN TROUBLESHOOTING
• 6.5.3. POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
• 6.5.4. CHECK BEFORE TROUBLESHOOTING
• 6.5.5. TYPES AND LOCATIONS OF CONNECTORS
• 6.5.6. CONNECTOR ARRANGEMENT DIAGRAM
• 6.5.7. CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
• 6.5.8. EXPLANATIONS OF CONTROL MECHANISM OF ELECTRICAL SYSTEM
• 6.5.9. DISPLAY METHOD FOR MONITOR PANEL, CONTROLLER
• 6.5.10. METHOD OF USING TROUBLESHOOTING CHARTS
• 6.5.11. TROUBLESHOOTING OF CONTROLLER, ELECTRICAL SYSTEM (E MODE)
• 6.5.12. TROUBLESHOOTING OF CONTROLLER INPUT SIGNAL SYSTEM (F MODE)
• 6.5.13. TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)
• 6.5.14. TROUBLESHOOTING OF MONITOR SYSTEM (M MODE)
• 6.5.15. TROUBLESHOOTING OF ENGINE (S MODE)
• 7. DISASSEMBLY AND ASSEMBLY
• 7.1. METHOD OF USING MANUAL
• 7.2. PRECAUTIONS WHEN CARRYING OUT OPERATION
• 7.3. SPECIAL TOOL LIST
• 7.4. SKETCHES OF SPECIAL TOOLS
• 7.5. ENGINE, MAIN PUMP
• 7.5.1. REMOVAL
• 7.5.2. INSTALLATION
• 7.6. RADIATOR, HYDRAULIC OIL COOLER
• 7.6.1. REMOVAL
• 7.6.2. INSTALLATION
• 7.7. FUEL TANK
• 7.7.1. REMOVAL AND INSTALLATION
• 7.8. CENTER SWIVEL JOINT
• 7.8.1. REMOVAL AND INSTALLATION
• 7.8.2. DISASSEMBLY AND ASSEMBLY
• 7.9. SWING MOTOR, SWING MACHINERY
• 7.9.1. REMOVAL AND INSTALLATION
• 7.10. SWING MACHINERY
• 7.10.1. DISASSEMBLY
• 7.10.2. ASSEMBLY
• 7.11. REVOLVING FRAME
• 7.11.1. REMOVAL
• 7.11.2. INSTALLATION
• 7.12. SWING CIRCLE
• 7.12.1. REMOVAL AND INSTALLATION
• 7.12.2. REMOVAL AND INSTALLATION
• 7.13. MAIN CONTROL VALVE
• 7.13.1. REMOVAL AND INSTALLATION
• 7.14. CONTROL VALVE
• 7.14.1. DISASSEMBLY
• 7.14.2. ASSEMBLY
• 7.15. LS SELECT VALVE
• 7.15.1. DISASSEMBLY AND ASSEMBLY
• 7.16. MAIN RELIEF VALVE
• 7.16.1. DISASSEMBLY
• 7.16.2. ASSEMBLY
• 7.17. WORK EQUIPMENT PPC VALVE (BOOM, BUCKET, ARM, SWING)
• 7.18. OFFSET CYLINDER
• 7.18.1. REMOVAL
• 7.18.2. INSTALLATION
• 7.19. HYDRAULIC CYLINDER
• 7.19.1. DISASSEMBLY
• 7.19.2. ASSEMBLY
• 7.20. OFFSET CYLINDER
• 7.21. AIR CONDITIONER COMPRESSOR
• 7.21.1. REMOVAL AND INSTALLATION
• 7.22. AIR CONDITIONER CAPACITOR
• 7.22.1. REMOVAL AND INSTALLATION
• 7.23. AIR CONDITIONER UNIT
• 7.23.1. REMOVAL
• 7.23.2. INSTALLATION
• 7.24. COUNTERWEIGHT
• 7.24.1. REMOVAL AND INSTALLATION
• 8. MAINTENANCE STANDARD
• 8.1. SWING MACHINERY
• 8.2. SWING CIRCLE
• 8.3. TRACK FRAME, IDLER CUSHION
• 8.4. SUCTION SAFETY VALVE
• 8.5. SELF PRESSURE REDUCTION VALVE
• 8.6. TRAVEL MOTOR
• 8.7. SWING MOTOR
• 8.8. SOLENOID VALVE
• 8.9. EPC SOLENOID VALVE
• 8.10. CENTER SWIVEL JOINT
• 8.11. PPC VALVE
• 8.12. HYDRAULIC CYLINDER
• 8.13. WORK EQUIPMENT
• 8.14. DIMENSION OF WORK EQUIPMENT
• 9. OTHERS
• 9.1. HYDRAULIC CIRCUIT DIAGRAM
• 9.2. ELECTRONIC CIRCUIT DIAGRAM (1/2)
• 9.3. ELECTRONIC CIRCUIT DIAGRAM (2/2)
• 9.4. AIR CONDITIONER CIRCUIT DIAGRAM