Komatsu D31EX-21, D31PX-21, D37EX-21, D37PX-21, D39EX-21, D39PX-21 Shop Manual SEBM035005

Description

• Model List:
  • D31EX-21
  • D31PX-21
  • D37EX-21
  • D37PX-21
  • D39EX-21
  • D39PX-21

• 1. COVER
• 2. CONTENTS
• 3. GENERAL
• 3.1. SPECIFICATION DRAWING
• 3.2. SPECIFICATIONS
• 3.3. WEIGHT TABLE
• 3.4. TABLE OF FUEL, COOLANT AND LUBRICANTS
• 4. STRUCTURE AND FUNCTION, MAINTENANCE STANDARD
• 4.1. COOLING SYSTEM
• 4.2. ENGINE CONTROL
• 4.3. POWER TRAIN
• 4.4. POWER TRAIN SYSTEM
• 4.5. DAMPER
• 4.6. HST HYDRAULIC EQUIPMENT ARRANGEMENT DIAGRAM
• 4.7. STEERING, BRAKE CONTROL
• 4.8. SOLENOID VALVE
• 4.9. TOWING VALVE
• 4.10. FINAL DRIVE
• 4.11. HST PUMP
• 4.12. SAFETYSUCTION VALVE
• 4.13. CHARGE SAFETY VALVE
• 4.14. CHARGE PUMP
• 4.15. TOWING VALVE
• 4.16. HST MOTOR
• 4.17. ELECTRIC LEVER (FOR STEERING)
• 4.18. FRAME ASSEMBLY
• 4.19. TRACK FRAME, RECOIL SPRING
• 4.20. ARRANGEMENT OF HYDRAULIC EQUIPMENT FOR WORK EQUIPMENT
• 4.21. WORK EQUIPMENT CONTROL
• 4.22. HYDRAULIC TANK, FILTER
• 4.23. PPC LOCK VALVE
• 4.24. ACCUMULATOR
• 4.25. HYDRAULIC PUMP
• 4.26. WORK EQUIPMENT CYLINDER
• 4.27. CONTROL VALVE
• 4.28. CLSS
• 4.29. PPC VALVE
• 4.30. WORK EQUIPMENT
• 4.31. CUTTING EDGE, END BIT
• 4.32. RIPPER
• 4.33. CAB RELATED
• 4.34. ENGINE CONTROL
• 4.35. HST CONTROL SYSTEM
• 4.36. GEAR SHIFT CONTROL SYSTEM
• 4.37. PARING BRAKE CONTROL SYSTEM
• 4.38. COMPONENT EQUIPMENT OF SYSTEM
• 4.39. MONITOR SYSTEM
• 4.40. MONITOR PANEL
• 4.41. SENSORS
• 5. TESTING AND ADJUSTING
• 5.1. STANDARD VALUE TABLE FOR ENGINE
• 5.2. STANDARD VALUE TABLE FOR CHASSIS
• 5.3. TESTING AND ADJUSTING
• 5.3.1. LIST OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
• 5.3.2. SKETCH OF SPECIAL TOOL
• 5.3.3. MEASURING ENGINE SPEED
• 5.3.4. MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE)
• 5.3.5. MEASURING EXHAUST TEMPERATURE
• 5.3.6. MEASURING EXHAUST GAS COLOR
• 5.3.7. ADJUSTING VALVE CLEARANCE
• 5.3.8. MEASURING COMPRESSION PRESSURE
• 5.3.9. MEASURING BLOWBY PRESSURE
• 5.3.10. MEASURING ENGINE OIL PRESSURE
• 5.3.11. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 5.3.12. BLEEDING AIR FROM FUEL CIRCUIT
• 5.3.13. ADJUSTING ENGINE STOP SOLENOID LINKAGE
• 5.3.14. ADJUSTING ENGINE SPEED SENSOR
• 5.3.15. REPLACEMENT OF FAN BELT
• 5.3.16. TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION (WITH CAB)
• 5.3.17. ADJUSTING FUEL CONTROL LEVER AND DECELERATOR PEDAL
• 5.3.18. TESTING AND ADJUSTING HST OIL PRESSURE
• 5.3.19. MEASURING HST SOLENOID VALVE OUTLET PRESSURE
• 5.3.20. TESTING TRAVEL DEVIATION
• 5.3.21. ADJUSTING HST MOTOR SPEED SENSOR
• 5.3.22. ADJUSTING PARKING BRAKE LEVER
• 5.3.23. PROCEDURE OF SIMPLE TEST OF BRAKE PERFORMANCE
• 5.3.24. ADJUSTING BRAKE PEDAL LINKAGE
• 5.3.25. METHOD OF RELEASING PARKING BRAKE (PROCEDURE FOR EMERGENCY ESCAPE)
• 5.3.26. TESTING AND ADJUSTING IDLER CLEARANCE
• 5.3.27. TESTING AND ADJUSTING TRACK SHOE TENSION
• 5.3.28. TESTING AND ADJUSTING WORK EQUIPMENT OIL PRESSURE
• 5.3.29. MEASURING WORK EQUIPMENT PPC VALVE OUTPUT PRESSURE
• 5.3.30. ADJUSTING PLAY OF WORK EQUIPMENT PPC VALVE
• 5.3.31. ADJUSTING WORK EQUIPMENT LOCK LEVER
• 5.3.32. MEASURING LEAKAGE IN WORK EQUIPMENT CYLINDER
• 5.3.33. RELEASING RESIDUAL PRESSURE IN HYDRAULIC CIRCUIT
• 5.3.34. BLEEDING AIR FROM HYDRAULIC CIRCUIT
• 5.3.35. ADJUSTING PLAY OF BLAD CENTER BALL
• 5.3.36. PROCEDURE FOR TESTING DIODES
• 5.3.37. SPECIAL FUNCTIONS OF MONITOR PANEL (EMMS)
• 5.3.38. PREPARATION WORK FOR TROUBLESHOOTING FOR ELECTRIC SYSTEM
• 5.3.39. PMCLINIC
• 5.4. TROUBLESHOOTING
• 5.4.1. POINTS TO REMEMBER WHEN TROUBLESHOOTING
• 5.4.2. SEQUENCE OF EVENTS IN TROUBLESHOOTING
• 5.4.3. HANDLING OF ELECTRIC EQUIPMENT AND HYDRAULIC COMPONENT
• 5.4.4. CHECKS BEFORE TROUBLESHOOTING
• 5.4.5. CLASSIFICATION AND PROCEDURE FOR TROUBLESHOOTING
• 5.4.6. CONNECTOR ARRANGEMENT DRAWING AND ELECTRIC CIRCUIT DIAGRAM OF EACH SYSTEM
• 5.4.7. CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
• 5.4.8. TBRANCH BOX AND TBRANCH ADAPTER TABLE
• 5.4.9. TROUBLESHOOTING WHEN ERROR CODE IS DISPLAYED
• 5.4.10. TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
• 5.4.11. TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)
• 5.4.12. TROUBLESHOOTING OF ENGINE (S MODE)
• 6. DISASSEMBLY AND ASSEMBLY
• 6.1. HOW TO READ THIS MANUAL
• 6.2. COATING MATERIALS LIST
• 6.3. SPECIAL TOOL LIST
• 6.4. SKETCHES OF SPECIAL TOOLS
• 6.5. REMOVAL AND INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY
• 6.6. REMOVAL AND INSTALLATION OF CYLINDER HEAD ASSEMBLY
• 6.7. REMOVAL AND INSTALLATION OF ENGINE FRONT SEAL
• 6.8. REMOVAL AND INSTALLATION OF ENGINE REAR SEAL
• 6.9. REMOVAL AND INSTALLATION OF RADIATOR GUARD ASSEMBLY
• 6.10. DISASSEMBLY AND ASSEMBLY OF RADIATOR, OIL COOLER, AND CHARGE AIR COOLER ASSEMBLIES
• 6.11. REMOVAL AND INSTALLATION OF ENGINE AND HST PUMP ASSEMBLY
• 6.12. REMOVAL AND INSTALLATION OF DAMPER
• 6.13. SPREADING AND INSTALLATION OF TRACK SHOE ASSEMBLY
• 6.14. REMOVAL AND INSTALLATION OF HST MOTOR AND FINAL DRIVE ASSEMBLY
• 6.15. DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE ASSEMBLY
• 6.16. REMOVAL AND INSTALLATION OF IDLER AND RECOIL SPRING ASSEMBLY
• 6.17. DISASSEMBLY AND ASSEMBLY OF RECOIL SPRING ASSEMBLY
• 6.18. DISASSEMBLY AND ASSEMBLY OF IDLER ASSEMBLY
• 6.19. DISASSEMBLY AND ASSEMBLY OF TRACK ROLLER ASSEMBLY
• 6.20. DISASSEMBLY AND ASSEMBLY OF CARRIER ROLLER ASSEMBLY
• 6.21. REMOVAL AND INSTALLATION OF HST PUMP ASSEMBLY
• 6.22. REMOVAL AND INSTALLATION OF MAIN CONTROL VALVE ASSEMBLY
• 6.23. DISASSEMBLY AND ASSEMBLY OF MAIN CONTROL VALVE ASSEMBLY
• 6.24. REMOVAL AND INSTALLATION OF BLADE ASSEMBLY
• 6.25. DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES
• 6.26. REMOVAL AND INSTALLATION OF OPERATORS SEAT FRAME ASSEMBLY
• 6.27. REMOVAL AND INSTALLATION OF FUEL TANK ASSEMBLY
• 6.28. REMOVAL AND INSTALLATION OF HYDRAULIC TANK ASSEMBLY
• 6.29. REMOVAL AND INSTALLATION OF HST CONTROLLER ASSEMBLY
• 7. OTHERS
• 7.1. HYDRAULIC CIRCUIT DIAGRAM(1/2)
• 7.2. HYDRAULIC CIRCUIT DIAGRAM(2/2)
• 7.3. ELECTRICAL CIRCUIT DIAGRAM(1/4)
• 7.4. ELECTRICAL CIRCUIT DIAGRAM(2/4)
• 7.5. ELECTRICAL CIRCUIT DIAGRAM(3/4)
• 7.6. ELECTRICAL CIRCUIT DIAGRAM(4/4)
• 7.7. AIR CONDITIONER CIRCUIT DIAGRAM