Komatsu PC270-7 Hydraulic Excavator Shop Manual SEBM030406

Description

• Model List:
  • PC270-7 Hydraulic Excavator

• 1. COVER
• 2. CONTENTS
• 3. GENERAL
• 3.1. SPECIFICATION DIMENSION DRAWINGS
• 3.2. SPECIFICATIONS
• 3.3. WEIGHT TABLE
• 3.4. FUEL,COOLANT,AND LUBRICANTS
• 4. STRUCTURE,FUNCTION,AND MAINTENANCE STANDARD
• 4.1. ENGINE RELATED PARTS
• 4.2. RADIATOROIL COOLERAFTERCOOLER
• 4.3. POWER TRAIN
• 4.4. FINAL DRIVE
• 4.5. SWING MACHINERY
• 4.6. SWING CIRCLE
• 4.7. TRACK FRAMERECOIL SPRING
• 4.8. IDLER
• 4.9. CARRIER ROLLER
• 4.10. TRACK ROLLER
• 4.11. TRACK SHOE
• 4.12. HYDRAULIC EQUIPMENT LAYOUT DRAWING
• 4.13. HYDRAULIC TANK
• 4.14. HYDRAULIC PUMP
• 4.15. CONTROL VALVE
• 4.16. CLSS
• 4.17. SELF PRESSURE REDUCING VALVE
• 4.18. SWING MOTOR
• 4.19. REVERSE PREVENTION VALVE
• 4.20. CENTER SWIVEL JOINT
• 4.21. TRAVEL MOTOR
• 4.22. TRAVEL JUNCTION VALVE
• 4.23. TRAVEL PPC SHUTTLE VALVE
• 4.24. VALVE CONTROL
• 4.25. WORK EQUIPMENTSWING PPC VALVE
• 4.26. TRAVEL PPC VALVE
• 4.27. SERVICE PPC VALVE
• 4.28. SOLENOID VALVE
• 4.29. PPC ACCUMULATOR
• 4.30. RETURN OIL FILTER
• 4.31. BOOM HYDRAULIC DRIFT PREVENTION VALVE
• 4.32. LIFT CHECK VALVE
• 4.33. ATTACHMENT CIRCUIT SELECTOR VALVE
• 4.34. HYDRAULIC CYLINDER
• 4.35. WORK EQUIPMENT
• 4.36. AIR CONDITIONER
• 4.37. ENGINE CONTROL
• 4.38. ELECTRONIC CONTROL SYSTEM
• 4.39. MULTI MONITOR SYSTEM
• 4.40. SEGMENT MONITOR SYSTEM
• 4.41. SENSOR
• 5. TESTING AND ADJUSTING
• 5.1. STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
• 5.2. STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
• 5.3. TESTING AND ADJUSTING
• 5.4. TROUBLESHOOTING
• 6. DISASSEMBLY AND ASSEMBLY
• 6.1. HOW TO READ THIS MANUAL
• 6.2. PRECAUTIONS WHEN PERFORMING OPERATION
• 6.3. SPECIAL TOOL LIST
• 6.4. SKETCHES OF SPECIAL TOOLS
• 6.5. STARTING MOTOR ASSEMBLY
• 6.6. FUEL INJECTION PUMP ASSEMBLY
• 6.7. ENGINE FRONT SEAL
• 6.8. ENGINE REAR SEAL
• 6.9. CYLINDER HEAD ASSEMBLY
• 6.10. RADIATOR ASSEMBLY
• 6.11. HYDRAULIC OIL COOLER ASSEMBLY
• 6.12. ENGINE AND HYDRAULIC PUMP ASSEMBLIES
• 6.13. FINAL DRIVE ASSEMBLY
• 6.14. FINAL DRIVE ASSEMBLY
• 6.15. SWING MOTOR AND SWING MACHINERY ASSEMBLY
• 6.16. SWING MOTOR AND SWING MACHINERY ASSEMBLY
• 6.17. CARRIER ROLLER ASSEMBLY
• 6.18. TRACK ROLLER ASSEMBLY
• 6.19. IDLER ASSEMBLY
• 6.20. RECOIL SPRING ASSEMBLY
• 6.21. SPROCKET
• 6.22. TRACK SHOE ASSEMBLY
• 6.23. SWING CIRCLE ASSEMBLY
• 6.24. REVOLVING FRAME ASSEMBLY
• 6.25. CENTER SWIVEL JOINT ASSEMBLY
• 6.26. CENTER SWIVEL JOINT ASSEMBLY
• 6.27. HYDRAULIC TANK ASSEMBLY
• 6.28. CONTROL VALVE ASSEMBLY
• 6.29. CONTROL VALVE ASSEMBLY
• 6.30. HYDRAULIC PUMP ASSEMBLY
• 6.31. OIL SEAL IN HYDRAULIC PUMP INPUT SHAFT
• 6.32. WORK EQUIPMENT PPC VALVE ASSEMBLY
• 6.33. TRAVEL PPC VALVE ASSEMBLY
• 6.34. HYDRAULIC CYLINDER ASSEMBLY
• 6.35. EQUIPMENT ASSEMBLY
• 6.36. AIR CONDITIONER UNIT ASSEMBLY
• 6.37. AIR CONDITIONER UNIT ASSEMBLY
• 6.38. COUNTERWEIGHT ASSEMBLY
• 6.39. OPERATORS CAB ASSEMBLY
• 6.40. OPERATORS CAB CLASS(STUCK GLASS)
• 6.41. FRONT WINDOW ASSEMBLY
• 6.42. MONITOR ASSEMBLY
• 6.43. GOVERNOR,PUMP CONTROLLER ASSEMBLY
• 7. OTHERS
• 7.1. HYDRAULIC CIRCUIT DIAGRAM (SHEET 1 OF 3)
• 7.2. HYDRAULIC CIRCUIT DIAGRAM (SHEET 2 OF 3)
• 7.3. HYDRAULIC CIRCUIT DIAGRAM (SHEET 3 OF 3)
• 7.4. ELECTRICAL CIRCUIT DIAGRAM SHEET 1 (SHEET 1 OF 3)
• 7.5. ELECTRICAL CIRCUIT DIAGRAM SHEET 1 (SHEET 2 OF 3)
• 7.6. ELECTRICAL CIRCUIT DIAGRAM SHEET 1 (SHEET 3 OF 3)
• 7.7. ELECTRICAL CIRCUIT DIAGRAM SHEET 2 (SHEET 1 OF 1)
• 7.8. ELECTRICAL CIRCUIT DIAGRAM SHEET 3 (SHEET 1 OF 2)
• 7.9. ELECTRICAL CIRCUIT DIAGRAM SHEET 3 (SHEET 2 OF 2)
• 7.10. ELECTRICAL CIRCUIT DIAGRAM SHEET 4 (SHEET 1 OF 2)
• 7.11. ELECTRICAL CIRCUIT DIAGRAM SHEET 4 (SHEET 2 OF 2)
• 7.12. ELECTRICAL CIRCUIT DIABRAM (1/4)
• 7.13. ELECTRICAL CIRCUIT DIABRAM (2/4)
• 7.14. ELECTRICAL CIRCUIT DIABRAM (3/4)
• 7.15. ELECTRICAL CIRCUIT DIABRAM (4/4)
• 7.16. ELECTRICAL CIRCUIT DIAGRAM FOR AIR CONDITIONER