Komatsu PC20R-8, PC27R-8 Hydraulic Excavator Shop Manual WEBM000201

Description

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

• 1. COVER
• 1.1. CONTENTS
• 1.2. LIST OF REVISED PAGES
• 1.3. SAFETY
• 1.4. FOREWORD
• 1.5. HOW TO READ THE SHOP MANUAL
• 1.6. HOISTING INSTRUCTIONS
• 1.7. STANDARD TIGHTENING TORQUE
• 1.8. COATING MATERIALS
• 1.9. ELECTRIC WIRE CODE
• 1.10. WEIGHT TABLE
• 1.11. TABLE OF OIL AND COOLANT QUANTITIES
• 1.12. STRUCTURE AND FUNCTION
• 1.12.1. POWER TRAIN
• 1.12.2. SWING CIRCLE
• 1.12.3. SWING MACHINERY PC27R8
• 1.12.4. FINAL DRIVE
• 1.12.5. TRACK FRAME
• 1.12.6. RECOIL SPRING
• 1.12.7. CARRIER ROLLER PC27R8
• 1.12.8. TRACK ROLLER
• 1.12.9. STEEL SHOE
• 1.12.10. HYDRAULIC SYSTEM PC20R8
• 1.12.11. HYDRAULIC SYSTEM PC27R8
• 1.12.12. HYDRAULIC CIRCUIT DIAGRAM PC20R8
• 1.12.13. HYDRAULIC CIRCUIT DIAGRAM PC27R8
• 1.12.14. HYDRAULIC PUMP PC20R8
• 1.12.15. HYDRAULIC PUMP PC27R8
• 1.12.16. TCC VALVE, LS VALVE, SERVO PISTON
• 1.12.17. ELECTRICAL DIAGRAM (1/3)
• 1.12.18. ELECTRICAL DIAGRAM (2/3)
• 1.12.19. ELECTRICAL DIAGRAM (3/3)
• 1.13. TESTING AND ADJUSTMENT
• 1.13.1. NORMAL OR STANDARD TECHNICAL DATA
• 1.13.2. SPECIAL TOOLS
• 1.13.3. CHECKING THE ENGINE SPEED
• 1.13.4. ADJUSTMENT OF VALVE CLEARANCE
• 1.13.5. MEASUREMENT OF THE COMPRESSION PRESSURE
• 1.13.6. CONTROL AND ADJUSTMENT OF THE TENSION OF THE FAN BELT
• 1.13.7. CONTROL AND ADJUSTMENT OF THE INJECTION TIMING
• 1.13.8. CONTROL AND ADJUSTMENT OF THE ACCELERATOR STROKE
• 1.13.9. ADJUSTMENT OF THE STROKE OF THE BLADE COMMAND LEVER
• 1.13.10. ADJUSTING THE FLEXIBLE CABLES
• 1.13.11. CONTROL AND ADJUSTMENT OF THE STROKE OF THE TRAVEL LEVER
• 1.13.12. ADJUSTMENT OF THE STROKE OF THE BOOM SWING COMMAND PEDAL
• 1.13.13. ADJUSTMENT OF THE PPC VALVE CLEARANCES
• 1.13.14. ADJUSTMENT OF THE RUBBER PAD AND SAFETY MICROSWITCH FOR SERVOCONTROL ENGAGEMENT
• 1.13.15. CONTROL AND ADJUSTMENT OF THE TRACKSHOE TENSION
• 1.13.16. CONTROL AND REGULATION OF THE PRESSURES IN THE HYDRAULIC CIRCUITS
• 1.13.17. CONTROL AND REGULATION OF THE LS DIFFERENTIAL PRESSURE AND ADJUSTMENT OF THE LS VALVE (PC20R8)
• 1.13.18. REGULATION OF THE PC VALVE (PC20R8)
• 1.13.19. CONTROL AND REGULATION OF THE LS DIFFERENTIAL PRESSURE AND ADJUSTMENT OF THE LS VALVE (PC27R8)
• 1.13.20. REGULATION OF THE PC VALVE (PC27R8)
• 1.13.21. CONTROL AND REGULATION OF THE SERVOCONTROL POWER SUPPLY
• 1.13.22. ELIMINATION OF RESIDUAL PRESSURES PRESSURISATION OF THE TANK
• 1.13.23. BLEEDING AIR FROM THE HYDRAULIC CIRCUITS
• 1.13.24. CONTROL OF HYDRAULIC DRIFTS ANALYSIS OF THE CAUSES OF A DRIFT
• 1.13.25. CHECKING FOR ANY LEAKAGES INSIDE THE WORKING EQUIPMENT CYLINDERS
• 1.13.26. CHECKING FOR ANY LEAKAGES INSIDE THE SWING MOTOR
• 1.13.27. METHODS FOR TESTING FOR LEAKAGES INSIDE THE SWIVEL JOINT
• 1.14. REMOVAL AND INSTALLATION
• 1.14.1. HOW TO READ THE MANUAL
• 1.14.2. PRECAUTIONS TO BE TAKEN WHILE WORKING
• 1.14.3. WATER COOLANT PUMP
• 1.14.4. OILCOOLER RADIATOR GROUP
• 1.14.5. ENGINEPUMP GROUP
• 1.14.6. PUMP
• 1.14.7. ENGINEPUMP COUPLING
• 1.14.8. LATERAL LOWER COVER
• 1.14.9. INNER CONTROL VALVE BOX COVER
• 1.14.10. CONTROL VALVE
• 1.14.11. LEFTHAND PPC VALVE (ARMBUCKET)
• 1.14.12. RIGHTHAND PPC VALVE (BOOMBUCKET)
• 1.14.13. SERVOCONTROL SOLENOID GROUP
• 1.14.14. PLATFORM
• 1.14.15. SWIVEL JOINT
• 1.14.16. SWING MACHINERY
• 1.14.17. REVOLVING FRAME
• 1.14.18. SWING CIRCLE
• 1.14.19. RUBBER TRACK SHOES
• 1.14.20. STEEL TRACKSHOES
• 1.14.21. SPROCKET WHEEL
• 1.14.22. FINAL DRIVE
• 1.14.23. IDLER AND RECOIL SPRING
• 1.14.24. SPRING RECOIL AND THRUST CYLINDER GROUPS
• 1.14.25. IDLER
• 1.14.26. TRACK ROLLERS
• 1.14.27. BOOM CYLINDER
• 1.14.28. ARM CYLINDER
• 1.14.29. BUCKET CYLINDER
• 1.14.30. BOOM SWING CYLINDER
• 1.14.31. BLADE CYLINDER
• 1.14.32. WORK EQUIPMENT CYLINDERS
• 1.14.33. UPPER WORK EQUIPMENT
• 1.14.34. BUCKET
• 1.14.36. ARM ASSEMBLY
• 1.14.37. BOOM
• 1.14.38. BOOM SWING SUPPORT
• 1.14.39. BLADE
• 1.15. STANDARD MAINTENANCE
• 1.15.1. SWING CIRCLE
• 1.15.2. SWING MACHINERY PC27R8
• 1.15.3. FINAL DRIVE
• 1.15.4. SPROCKET
• 1.15.5. TRACK FRAME AND RECOIL SPRING
• 1.15.6. IDLER
• 1.15.7. CARRIER ROLLER PC27R8
• 1.15.8. WORK EQUIPMENT PC20R8
• 1.15.9. WORK EQUIPMENT PC27R8