Komatsu PC50UU-1 Hydraulic Excavator Shop Manual SEBM020U0104

Description

• Model List:
  • PC50UU-1 Hydraulic Excavator

• 1. COVER
• 2. CONTENTS
• 3. STRUCTURE AND FUNCTION
• 3.1. POWER TRAIN
• 3.2. SWING MACHINERY
• 3.3. SWING CIRCLE
• 3.4. TRACK FRAME AND RECOIL SPRING
• 3.5. IDLER
• 3.6. TRACK ROLLER
• 3.7. TRACK SHOE
• 3.8. HYDRAULIC PIPING
• 3.9. HYDRAULIC CIRCUIT SCHEMATICS
• 3.10. HYDRAULIC CIRCUIT DIAGRAM
• 3.11. HYDRAULIC TANK AND FUEL TANK
• 3.12. HYDRAULIC PUMP
• 3.13. SPOOL CONTROL VALVE
• 3.14. SPOOL CONTROL VALVE
• 3.15. SUCTION VALVE
• 3.16. SWING MOTOR
• 3.17. CENTER SWIVEL JOINT
• 3.18. TRAVEL MOTOR WITH REDUCTION GEAR
• 3.18.1. TRAVEL MOTOR AND FINAL DRIVE
• 3.18.2. BRAKE VALVE
• 3.19. HYDRAULIC CYLINDER
• 3.20. WORK EQUIPMENT CONTROL
• 3.21. WORK EQUIPMENT
• 3.22. ELECTRICAL CIRCUIT
• 4. TESTING AND ADJUSTING
• 4.1. TABLE OF JUDGEMENT STANDARD VALUE
• 4.2. TESTING AND ADJUSTING TOOL LIST
• 4.3. ADJUSTING VALVE CLEARANCE
• 4.4. MEASURING COMPRESSION PRESSURE
• 4.5. ADJUSTING FUEL INJECTION TIMING
• 4.6. TESTING AND ADJUSTING HYDRAULIC PRESSURE
• 4.7. MEASURING OIL LEAKAGE FROM SWING AND TRAVEL MOTOR
• 4.8. MEASURING OIL LEAKAGE FROM CYLINDER
• 4.9. CHECKING FOR OIL LEAKAGE FROM SWIVEL JOINT
• 4.10. TROUBLESHOOTING
• 4.10.1. PREPARATION OF TROUBLESHOOTING
• 4.10.2. HOW TO USE DIAGNOSTIC TABLE
• 4.10.3. PREVENTING RECURRENCE OF THE SAME TROUBLE
• 4.10.4. DIAGNOSTIC TABLE
• 4.10.4.1. BUCKET CURL(DUMP)LACKS POWER OR SPEED
• 4.10.4.2. ARM(BOOM)LACKS POWER OR SPEED
• 4.10.4.3. IMPOSSIBLE TO CURL OR DUMP BUCKET
• 4.10.4.4. IMPOSSIBLE TO MOVE WORK EQUPIMENT(BOOM,ARM)
• 4.10.4.5. HYDRAULIC DRIFT OF WORK EQUIPMENT IS EXCESSIVE(BOOM,ARM,BUCKET,BLADE)
• 4.10.4.6. BLADE,BOOM,OFFSET SPEED TOO LOW
• 4.10.4.7. BLADE,BOOM,OFFSET DO NOT MOVE
• 4.10.4.8. LEFT(OR RIGHT)SWING LACKS POWER OR SPEED
• 4.10.4.9. IMPOSSIBLE TO SWING TO LEFT(OR RIGHT)
• 4.10.4.10. HYDRAULIC DRIFT OF SWING ON SLOPES IS EXCESSIVE
• 4.10.4.11. SWING BRAKE ANGLE IS EXCESSIVE
• 4.10.4.12. MACHINE DEVIATES TO ONE SIDE WHEN TRAVELING
• 4.10.4.13. IMPOSSIBLE TO TRAVEL FORWARD(OR REVERSE)
• 5. DISASSEMBLY AND ASSEMBLY
• 5.1. METHOD OF READING MANUAL
• 5.2. SPECIAL TOOL LIST
• 5.3. WEIGHT TABLE
• 5.4. TIGHTENING TORQUE TABLE
• 5.5. LIST OF LUBRICANT AND WATER
• 5.6. FUEL INJECTION PUMP
• 5.7. SWING MACHINERY
• 5.7.1. DISASSEMBLY
• 5.7.2. ASSEMBLY
• 5.8. CENTER SWIVEL JOINT
• 5.9. REVOLVING FRAME
• 5.10. SPOOL CONTROL VALVE
• 5.10.1. REMOVAL
• 5.10.2. INSTALLATION
• 5.11. SPOOL CONTROL VALVE
• 5.11.1. REMOVAL
• 5.11.2. INSTALLATION
• 5.12. SPOOL CONTROL VALVE
• 5.12.1. DISASSEMBLY
• 5.12.2. ASSEMBLY
• 5.13. SPOOL CONTROL VALVE
• 5.13.1. DISASSEMBLY
• 5.13.2. ASSEMBLY
• 5.14. MAIN RELIEF VALVE
• 5.15. BUCKET CYLINDER
• 5.16. OFFSET CYLINDER
• 5.16.1. REMOVAL
• 5.16.2. INSTALLATION
• 5.17. HYDRAULIC CYLINDER
• 5.18. SECONG AND THIRD BOOM(WITH ARM CYLINDER ASSEMBLY)
• 6. MAINTENANCE STANDARD
• 6.1. SWING MACHINERY
• 6.2. SPOOL CONTROL VALVE
• 6.3. SPOOL CONTROL VALVE
• 6.4. CENTER SWIVEL JOINT
• 6.5. HYDRAULIC CYLINDER
• 6.6. WORK EQUIPMENT