Komatsu PW75R-2 Hydraulic Excavator Shop Manual WEBM001602

Description

• Model List:
  • PW75R-2 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. CONVERSION TABLE
• 1.13. STRUCTURE AND FUNCTION
• 1.13.1. STEERING SYSTEM
• 1.13.2. STEERING UNIT
• 1.13.3. SWING CIRCLE
• 1.13.4. SPECIFICATIONS
• 1.13.5. HYDRAULIC DIAGRAM STANDARD
• 1.13.6. HYDRAULIC CIRCUIT (WORK EQUIPMENT)
• 1.13.7. TRAVEL VALVE BOOM VALVE
• 1.13.8. ARM VALVE BUCKET VALVE
• 1.13.9. OUTRIGGER VALVE BOOM SWING VALVE
• 1.13.10. PIECE BOOM VALVE ATTACHMENT VALVE
• 1.13.11. CONTROL VALVE
• 1.13.12. SWING MOTOR
• 1.13.13. SWIVEL JOINT
• 1.13.14. TRAVEL MOTOR
• 1.13.15. DISPLACEMENT AUTOMATIC CONTROL HIGH PRESSURE RELATED
• 1.13.16. TRAVEL MOTOR BRAKE VALVES
• 1.13.17. CYLINDERS
• 1.13.18. AXLE LOCKING CYLINDER
• 1.13.19. SERVOCONTROL FEED UNIT
• 1.13.20. ACCUMULATOR
• 1.13.21. SHUTTLE VALVE
• 1.13.22. PPC VALVES
• 1.13.23. TRAVEL PPC VALVE
• 1.13.24. BRAKE PUMP
• 1.13.25. BOOM AND ARM SAFETY VALVE
• 1.13.26. BLADE OR OUTRIGGERS SAFETY VALVE
• 1.13.27. PIECE BOOM SAFETY VALVE
• 1.13.28. OVERLOAD SENSOR SWITCH
• 1.13.29. SOLENOID VALVES
• 1.13.30. AIRCONDITIONING UNIT
• 1.13.31. ELECTRICAL DIAGRAM (1/8)
• 1.13.32. ELECTRICAL DIAGRAM (2/8)
• 1.13.33. ELECTRICAL DIAGRAM (3/8)
• 1.13.34. ELECTRICAL DIAGRAM (4/8)
• 1.13.35. ELECTRICAL DIAGRAM (5/8)
• 1.13.36. ELECTRICAL DIAGRAM (6/8)
• 1.13.37. ELECTRICAL DIAGRAM (7/8)
• 1.13.38. ELECTRICAL DIAGRAM (8/8)
• 1.13.39. CONTROL UNIT FUSES RELAIS (1/2)
• 1.13.40. CONTROL UNIT FUSES RELAIS (2/2)
• 1.14. TESTING AND ADJUSTMENTS
• 1.14.1. NORMAL OR STANDARD TECHNICAL DATA
• 1.14.2. SPECIAL TOOLS
• 1.14.3. MEASURING THE ENGINE SPEED
• 1.14.4. ADJUSTING VALVE CLEARANCE
• 1.14.5. MEASURING COMPRESSION PRESSURE
• 1.14.6. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 1.14.7. TESTING AND ADJUSTING FAN BELT TENSION
• 1.14.8. CHECKING AND TIGHTENING THE COMPRESSOR FANBELT
• 1.14.9. ADJUSTING THE STROKE OF THE ACCELERATOR LEVER
• 1.14.10. ADJUSTING PPC VALVES CLEARANCE
• 1.14.11. ADJUSTING THE SAFETY MICROSWITCH
• 1.14.12. MEASURING THE SWING CIRCLE AXIAL CLEARANCE
• 1.14.13. AIR BLEEDING FROM HYDRAULIC CIRCUITS
• 1.14.14. RELEASING RESIDUAL PRESSURE FROM THE CIRCUITS
• 1.14.15. CHECKING AND REGULATING PRESSURE IN THE HYDRAULIC CIRCUITS
• 1.14.16. TESTING AND SETTING OF MAIN VALVES
• 1.14.17. ADJUSTING PC VALVE
• 1.14.18. MEASURING LS DIFFERENTIAL PRESSURE AND ADJUSTING LS VALVE
• 1.14.19. CHECKING AND ADJUSTING PRESSURES IN THE SERVOCONTROL FEED UNIT
• 1.14.20. MEASURING PUMPS DELIVERY AND FLOW CONTROL STARTING POINT PUMP P1
• 1.14.21. CHECKING THAT THE PRIORITY VALVE IS FUNCTIONING CORRECTLY
• 1.14.22. CHECKING AND REGULATING THE PRESSURE OF THE STEERING SYSTEM
• 1.14.23. CHECKING LEAKAGES IN THE STEERING CYLINDERS
• 1.14.24. CHECKING THE BRAKING SYSTEM
• 1.14.25. CHECKING WEAR IN THE BRAKE DISKS
• 1.14.26. BLEEDING AIR FROM THE BRAKE LINES
• 1.14.27. ADJUSTING THE PARKING BRAKE
• 1.14.28. TRAVEL HYDRAULIC EQUIPMENT CHECKING PROCEDURE
• 1.14.29. CHECKING AND ADJUSTING THE AUTOMATIC DISPLACEMENT CONTROL SYSTEM OF THE TRAVEL MOTOR
• 1.14.30. CHECKING FOR LEAKAGES IN THE TRAVEL MOTOR
• 1.14.31. CHECKING AND ADJUSTING THE SPEED OF THE TRAVEL PROPELLER SHAFT
• 1.14.32. ADJUSTMENT OF THE SPEED SURVEYOR
• 1.14.33. ADJUSTING BOOM AND ARM SAFETY VALVES
• 1.14.34. ADJUSTING 2nd BOOM SAFETY VALVES
• 1.14.35. MEASURING AND SETTING OF PRESSURE SWITCH SIGNAL OVERLOAD OPERATION
• 1.14.36. MEASUREMENT OF INTERNAL OIL LEAKAGES IN THE SWING MOTOR
• 1.14.37. CHECKING FOR LEAKAGES INSIDE THE SWIVEL JOINT
• 1.14.38. ANALYSIS OF THE CAUSES OF HYDRAULIC DRIFTS
• 1.14.39. TESTING THE AIRCONDITIONING UNIT
• 1.14.40. EMPTYING THE AIRCONDITIONING UNIT
• 1.15. REMOVAL AND INSTALLATION
• 1.15.1. HOW TO READ THE MANUAL
• 1.15.2. PRECAUTIONS TO BE TAKEN WHEN WORKING
• 1.15.3. SPECIAL TOOLS
• 1.15.4. STARTER MOTOR
• 1.15.5. ALTERNATOR
• 1.15.6. AIRCONDITIONING UNIT COMPRESSOR
• 1.15.7. HEATING FAN UNIT
• 1.15.8. AIR CONIDTIONING FAN UNIT
• 1.15.9. RADIATOR
• 1.15.10. FUEL TANK
• 1.15.11. HYDRAULIC OIL TANK
• 1.15.12. ENGINEPUMP GROUP
• 1.15.13. PUMP GROUP
• 1.15.14. ENGINEPUMP COUPLING JOINT
• 1.15.15. MAIN PUMP INPUT SHAFT OIL SEAL
• 1.15.16. GEARPUMP
• 1.15.17. SWIVEL JOINT
• 1.15.18. SWING MOTOR
• 1.15.19. SWING MACHINERY
• 1.15.20. CONTROL VALVE
• 1.15.21. REVOLVING FRAME
• 1.15.22. COUNTERWEIGHT
• 1.15.23. SWING CIRCLE
• 1.15.24. TRANSMISSION REVERSER, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
• 1.15.25. PPC VALVE (BOOMBUCKET)
• 1.15.26. PPC VALVE (ARMSWING)
• 1.15.27. OUTRIGGER AND BLADE PPC VALVE
• 1.15.28. BOOM SWING PPC VALVE
• 1.15.29. TRAVEL AND 2nd BOOM PPC VALVE
• 1.15.30. AXLE LOCKING CYLINDERS
• 1.15.31. FRONT AXLE
• 1.15.32. REAR AXLE
• 1.15.33. AXLES
• 1.15.34. BOOM CYLINDER (For 1piece boom)
• 1.15.35. REMOVAL OF BOOM CYLINDER (For 2piece boom)
• 1.15.36. d BOOM CYLINDERS
• 1.15.37. ARM CYLINDER
• 1.15.38. BUCKET CYLINDER
• 1.15.39. BOOM SWING CYLINDER
• 1.15.40. CYLINDERS FOR OUTRIGGERS OR BLADE
• 1.15.41. WORK EQUIPMENT CYLINDERS
• 1.15.42. WORK EQUIPMENT (For 1piece boom)
• 1.15.43. WORK EQUIPMENT (For 2piece boom)
• 1.15.44. BUCKET
• 1.15.46. d BOOM
• 1.15.47. BOOM (For 1piece boom)
• 1.15.48. BOOM (For 2piece boom)
• 1.15.49. SWING SUPPORT
• 1.15.50. BLADE AND OUTRIGGERS
• 1.15.51. BLADE AND OUTRIGGER ARMS
• 1.16. STANDARD MAINTENANCE
• 1.16.1. SWING MACHINERY
• 1.16.2. TRAVEL MOTOR BRAKE VALVES
• 1.16.3. SERVOCONTROL FEED UNIT
• 1.16.4. TRAVEL PPC VALVE
• 1.16.5. PPC VALVES
• 1.16.6. BLADE SAFETY VALVE
• 1.16.7. CYLINDERS
• 1.16.8. WORK EQUIPMENT