Komatsu PW140-7 Wheeled Excavator Shop Manual

Description

• Model List:
  • PW140-7 Wheeled Excavator

• 1. VEBM410100 PW1407
• 2. SAFETY
• 2.1. HOW TO READ THE SHOP MANUAL
• 2.2. HOISTING INSTRUCTIONS
• 2.3. COATING MATERIALS
• 2.4. STANDARD TIGHTENING TORQUE
• 2.5. ELECTRIC WIRE CODE
• 2.6. CONVERSION TABLES
• 2.7. UNITS
• 2.8. SAFETY NOTICE
• 3. GENERAL
• 3.1. WORKING RANGES
• 3.2. SPECIFICATION DIMENSION DRAWINGS
• 3.3. SPECIFICATIONS
• 3.4. WEIGHT TABLE
• 3.5. FUEL, COOLANT AND LUBRICANTS
• 4. STRUCTURE, FUNCTION AND MAINTENANCE
• 4.1. ENGINE RELATED PARTS
• 4.2. RADIATOR . OIL COOLER . CHARGE AIR COOLER
• 4.3. POWER TRAIN
• 4.4. SWING CIRCLE
• 4.5. SWING MACHINERY MOTOR
• 4.6. UNDERCARRIAGE
• 4.7. TRANSMISSION
• 4.8. TRAVEL MOTOR
• 4.9. CLUTCH CONTROL CIRCUIT
• 4.10. AXLE
• 4.11. SUSPENSION LOCK CYLINDER
• 4.12. BRAKING SYSTEM
• 4.13. BRAKE/STEER PUMP
• 4.14. PRIORITY VALVE
• 4.15. POWER BRAKE VALVE
• 4.16. ACCUMULATOR FOR BRAKE VALVE
• 4.17. STEERING SYSTEM
• 4.18. STEERING COLUMN
• 4.19. ORBITROL VALVE
• 4.20. HYDRAULIC EQUIPMENT LAYOUT DRAWINGS
• 4.21. HYDRAULIC CIRCUIT DIAGRAM
• 4.22. PILOT PRESSURE CONTROL (PPC) SYSTEM
• 4.23. CONTROL VALVE
• 4.24. CLSS
• 4.25. CENTRE SWIVEL JOINT
• 4.26. TRAVEL PPC PEDAL
• 4.27. WORK EQUIPMENT . SWING PPC VALVE
• 4.28. SOLENOID VALVE BLOCK
• 4.29. BOOM SAFETY VALVE
• 4.30. HYDRAULIC CYLINDER
• 4.31. OUTRIGGER CYLINDER
• 4.32. DOZER CYLINDER
• 4.33. WORK EQUIPMENT
• 4.34. AIR CONDITIONER
• 4.35. ELECTRICAL WIRING DIAGRAM
• 4.36. ELECTRICAL SYSTEM
• 4.37. ELECTRONIC CONTROL SYSTEM
• 4.38. MACHINE MONITOR SYSTEM
• 4.39. OVERLOAD WARNING DEVICE
• 4.40. SENSOR
• 4.41. t ATTACHMENT CIRCUIT HYDRAULIC PERFORMANCE (MAIN VALVE BYPASSED)
• 4.42. TRAVEL SYSTEM
• 4.43. STEERING SYSTEM
• 4.44. SERVICE BRAKE AND SUSPENSION SYSTEM
• 5. TESTING AND ADJUSTING
• 5.1. MEASURING ENGINE SPEED
• 5.2. MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE)
• 5.3. CHECKING EXHAUST GAS COLOUR
• 5.4. ADJUSTING VALVE CLEARANCE
• 5.5. MEASURMENT OF COMPRESSION PRESSURE
• 5.6. MEASURING BLOWBY PRESSURE
• 5.7. MEASURING ENGINE OIL PRESSURE
• 5.8. HANDLING FUEL SYSTEM PARTS
• 5.9. RELEASING RESIDUAL PRESSURE FROM FUEL SYSTEM
• 5.10. MEASURING FUEL PRESSURE
• 5.11. MEASURING FUEL RETURN RATE AND LEAKAGE
• 5.12. BLEEDING AIR FROM FUEL CIRCUIT
• 5.13. CHECKING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION
• 5.14. REPLACING THE FAN BELT
• 5.15. MEASUREMENT OF CLEARANCE IN SWING CIRCLE BEARINGS
• 5.16. INSPECTION AND ADJUSTMENT OF HYDRAULIC OIL PRESSURE IN HYDRAULIC CIRCUIT FOR WORK EQUIPMENT, SWING AND TRAVEL
• 5.17. INSPECTION AND ADJUSTMENT OF CONTROL CIRCUIT OIL PRESSURE
• 5.18. INSPECTION AND ADJUSTMENT OF PUMP PC (VALVE INLET) CONTROL OIL PRESSURE
• 5.19. MEASUREMENT OF SOLENOID VALVE OUTPUT PRESSURE
• 5.20. INSPECTION AND ADJUSTMENT OF PUMP LS VALVE CONTROL OIL PRESSURE
• 5.21. MEASUREMENT OF PPC VALVE OUTPUT PRESSURE
• 5.22. ADJUSTMENT OF WORK EQUIPMENT AND SWING PPC VALVE
• 5.23. TESTING TRAVEL MOTOR RELIEF PRESSURE
• 5.24. ADJUSTING TRAVEL MOTOR RELIEF PRESSURE
• 5.25. TESTING PROPSHAFT SPEED
• 5.26. TESTING TRANSMISSION CLUTCH CONTROL CIRCUIT
• 5.27. INSPECTION OF LOCATIONS OF HYDRAULIC DRIFT OF WORK EQUIPMENT
• 5.28. RELEASE OF REMAINING PRESSURE IN HYDRAULIC CIRCUIT
• 5.29. MEASUREMENT OF OIL LEAKAGE
• 5.30. AIR BLEEDING OF VARIOUS PARTS
• 5.31. INSPECTION PROCEDURES FOR DIODE
• 5.32. SPECIAL FUNCTION OF MONITOR PANEL
• 5.33. PREPARATIONS FOR TROUBLESHOOTING ELECTRICAL SYSTEM
• 5.34. POINTS TO REMEMBER WHEN TROUBLESHOOTING
• 5.35. SEQUENCE OF EVENTS IN TROUBLESHOOTING
• 5.36. POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
• 5.37. CHECKS BEFORE TROUBLESHOOTING
• 5.38. CLASSIFICATION AND STEPS FOR TROUBLESHOOTING
• 5.39. CONNECTOR LOCATION CHART AND ELECTRICAL CIRCUIT DIAGRAM BY SYSTEM
• 5.40. CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
• 5.41. INFORMATION CONTAINED IN TROUBLESHOOTING TABLE
• 5.42. STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
• 5.43. TROUBLESHOOTING OF ELECTRICAL SYSTEM (Error checking of items without Monitor codes)
• 5.44. STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
• 6. DISASSEMBLY AND ASSEMBLY
• 6.1. HOW TO READ THIS MANUAL
• 7. OTHER
• 7.1. HYDRAULIC CIRCUIT DIAGRAM (1/3)
• 7.2. HYDRAULIC CIRCUIT DIAGRAM (2/3)
• 7.3. HYDRAULIC CIRCUIT DIAGRAM (3/3)
• 7.4. ELECTRICAL CIRCUIT DIAGRAM (1/3)
• 7.5. ELECTRICAL CIRCUIT DIAGRAM (2/3)
• 7.6. ELECTRICAL CIRCUIT DIAGRAM (3/3)