Komatsu D31EX D37EX PX-12
KOMATSU D31EX, PX-21 & D37EX, PX21 - WORKSHOP, SERVICE, REPAIR MANUAL - WIRING DIAGRAMS
KOMATSU D31EX, PX-21 & D37EX, PX21 - WORKSHOP, SERVICE, REPAIR MANUAL - WIRING DIAGRAMS - English Workshop Manual and Wiring Diagrams, to Komatsu D31EX, PX-21 and D37EX, PX-12. CONTENTS: COVER CONTENTS 01 GENERAL - SPECIFICATION DRAWING - SPECIFICATIONS - WEIGHT TABLE - TABLE OF FUEL, COOLANT AND LUBRICANTS 10 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD - COOLING SYSTEM - ENGINE CONTROL - POWER TRAIN - POWER TRAIN SYSTEM - HST HYDRAULIC EQUIPMENT ARRANGEMENT DIAGRAM - STEERING, BRAKE CONTROL - DAMPER - SOLENOID VALVE - FINAL DRIVE - HST PUMP - SAFETY-SUCTION VALVE - CUT-OFF VALVE - CHARGE SAFETY VALVE - CHARGE PUMP - HST BRAKE QUICK RETURN CIRCUIT - TOWING VALVE - PARKING BRAKE VALVE - AS VALVE - HST MOTOR - STEERING, DIRECTIONAL PPC VALVE - AUTOMATIC GEARSHIFTING VALVE - INCHING VALVE - FRAME ASSEMBLY - TRACK FRAME, RECOIL SPRING - IDLER - TRACK ROLLER - CARRIER ROLLER - SPROCKET - TRACK SHOE - ARRANGEMENT OF HYDRAULIC EQUIPMENT FOR WORK EQUIPMENT - WORK EQUIPMENT CONTROL - HYDRAULIC TANK, FILTER - HYDRAULIC PUMP - WORK EQUIPMENT CYLINDER - CONTROL VALVE - CLSS - WORK EQUIPMENT PPC VALVE - WORK EQUIPMENT - CUTTING EDGE, END BIT - CAB RELATED - SAFETY MECHANISM WHEN STARTING ENGINE - GEARSHIFT CONTROL SYSTEM - PARKING BRAKE CONTROL SYSTEM - COMPONENT EQUIPMENT OF SYSTEM - MONITOR SYSTEM - SENSORS 20 TESTING AND ADJUSTING - STANDARD VALUE TABLE FOR ENGINE - STANDARD VALUE TABLE FOR CHASSIS - STANDARD VALUE TABLE FOR ELECTRICAL SYSTEM - TESTING AND ADJUSTING - TOOLS LIST FOR TESTING AND ADJUSTING - MEASURING ENGINE SPEED - MEASURING EXHAUST COLOR - MEASURING BLOW-BY PRESSURE - MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE) - ADJUSTING VALVE CLEARANCE - TESTING ADJUSTING FUEL INJECTION TIMING - MEASURING COMPRESSION PRESSURE - ADJUSTING ENGINE STOP SOLENOIDE LINKAGE - MEASURING ENGINE OIL PRESSURE - BLEEDING AIR FROM FUEL CIRCUIT - TESTING AND ADJUSTING TENSION OF AIR CONDITIONER COMPRESSOR BELT - MEASURING AND ADJUSTING HST OIL PRESSURE - MEASURING SOLENOID VALVE OUTPUT PRESSURE - MEASURING AND ADJUSTING WORK EQUIPMENT MAIN RELIEF PRESSURE - MEASURING PPC VALVE OUTPUT PRESSURE - MEASURING LEAKAGE INSIED CYLINDER - BLEEDING AIR FROM HYDRAULIC CYLINDERS - TESTING AND ADJUSTING TRACK SHOE TENSION - TESTING AND ADJUSTING TRAVEL DEVIATION - ADJUSTING FUEL CONTROL LINKAGE - ADJUSTING DECELERATOR PEDAL LINKAGE - ADJUSTING BRAKE PEDAL LINKAGE - ADJUSTING STEERING/DIRECTIONAL/GEAR SHIFT LEVER AND LOCK LEVER - ADJUSTING BLADE CONTROL LEVER AND LOCK LEVER - ADJUSTING WORK EQUIPMENT PPC VALVE - PROCEDURE FOR RELEASING PARKING BRAKE - PROCEDURE FOR INSPECTING DIODE - TROUBLESHOOTING - POINTS TO REMEMBER WHEN TROUBLESHOOTING - SEQUENCE OF EVENTS IN TROUBLESHOOTING - POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE - CHECKS BEFORE TROUBLESHOOTING - METHOD OF USING TROUBLESHOOTING CHARTS - TYPES AND LOCATIONS OF CONNECTORS - CONNECTOR ARRANGEMENT DIAGRAM - CONNECTION TABLE FOR CONNECTOR PIN NUMBERS - TROUBLESHOOTING FOR ELECTRICAL SYSTEM (E-MODE) - TABLE OF FAILURE MODES AND CAUSES (ELECTRICAL SYSTEM) - ELECTRICAL CIRCUIT DIAGRAM FOR EACH SYSTEM - E-1. WHEN STARTING SWITCH IS TURNED ON, STARTING MOTOR DOES NOT ROTATE - E-2. ENGINE DOES NOT START (ENGINE STOP SOLENOID DOES NOT OPERATE NORMALLY) - E-3. HEADLAMP DOES NOT LIGHT UP - E-4. WHEN STARTING SWITCH IS TURNED TO HEAT POSITION, ENGINE IS NOT HEATED - E-5. WINDSHIELD WIPER DOES NOT OPERATE - E-6. WASHING WATER DOES NOT SPOUT - E-7. AIR CONDITIONER DOES NOT WORK - a) AIR DOES NOT BLOW OUT - b) AIR IS NOT COOLED - E-8. PARKING BRAKE CANNOT BE RELEASED (PARKING BRAKE SOLENOID DOES NOT OPERATE) - E-9. TRAVEL SPEED CONTROL IS ABNORMAL - a) WHEN GEAR SHIFT SWITCH IS PRESSED,GEAR SPEED DOES NOT CHANGE OR GEAR SPEED CHANGES BY ITSELF (GEAR SHIFT SWITCH OR CONTROLLER IS ABNORMAL) - b) GEAR SPEED CANNOT BE SELECTED NORMALLY (TRAVEL SPEED CHANGEOVER SOLENOID IS ABNORMAL) - E-10. BACKUP ALARM DOES NOT SOUND DURING REVERSE TRAVEL - E-11. HORN DOES NOT SOUND - TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEM (H-MODE) - TABLE OF FAILURE MODES AND CAUSES (HYDRAULIC AND MECHANICAL SYSTEMS) - H-1. MACHINE DOES NOT TRAVEL IN EITHER DIRECTION OR IT STOPS SUDDENLY - H-2. MACHINE DOES NOT TRAVEL IN ONE DIRECTION - H-3. MACHINE TRAVELS WHILE TRAVEL LEVER IS IN NEUTRAL - H-5. MACHINE DEVIATES WHILE TRAVEL LEVER IS IN PARTIAL POSITION - H-7. MACHINE SWHINGS MOMENTARILY WHEN IT STARTS ON FLAT GROUND - H-11. TURNING TIME LAG IS LARGE - H-12. WHEN OPERATOR INTENDS TO TURN GARDUALLY, MACHINE TURNS SHARPLY - H-13. MACHINE DOES NOT RETURN QUICKLY TO STRAIGHT TRAVEL POSITION - H-14. MACHINE IS NOT DECELERATED SMOOTHLY OR TRAVEL SPEED CANNOT BE CONTROLLED ON DOWNHILL GROUND - H-15. MACHINE DEVIATES WHEN IT IS DECELERATED - H-4. MACHINE DEVIATES WHEN TRAVEL LEVER IS MOVED TO STROKE END - H-6. MACHINE MOVES BACK WHEN OPERATOR STARTS ON UPHILL GROUND - H-8. MACHINE STARTS SHARPLY - H-9. MACHINE SWINGS MOMENTARLLY WHEN IT STARTS - H-10. STARTING TIME LAG IS LARGE - H-16. MAXIMUM TRAVEL SPEED IS LOW OR OUTPUT POWER IS INSUFFICIENT OR ACCELERATION IS LOW - H-17. ENGINE STALLS - H-18. HST NOISE IS LARGE - H-19. HST OIL TEMPERATURE RISES TOO HIGH - H-20. GEAR SPEED DOES NOT CHANGE - H-21. ABNORMAL SOUND IS HEARD FROM AROUND WORK EQUIPMENT PUMP OR HST PUMP - H-22. ANY WORK EQUIPMENT DOES NOT MOVE - H-23. SPEED OR POWER OF EACH WORK EQUIPMENT IS LOW - H-24. SPEED OR POWER OF BLADE LIFT OF BLADE TILT CYLINDER IS LOW - H-25. SPEED OR POWER OF BLADE ANGLE CYLINDER IS LOW - H-26. HYDRAULIC DRIFT OF BLADE LIFT CYLINDER IS LARGE - H-27. HYDRAULIC DRIFT OF BLADE TILT CYLINDER IS LARGE - H-28. HYDRAULIC DRIFT OF BLADE ANGLE CYLINDER IS LARGE - TROUBLESHOOTING FOR MACHINE MONITOR SYSTEM (M-MODE) - TABLE OF FAILURE MODES AND CAUSES (MACHINE MONITOR SYSTEM) - ELECTRIC CIRCUIT DIAGRAM FOR EACH SYSTEM - M-1. WHEN STARTING SWITCH IS TURNED ON , MONITOR PANEL IS NOT TURNED ON - M-2. TROUBLE IN PREHEATING CAUTION LAMP - a) PREHEATING MONITOR DOES NOT LIGHT UP - b) PREHEATING MONITOR KEEPS LIGHTING UP - M-3. CAUTION ITEM LIGHTS UP - a) CHARGE CAUTION LAMP LIGHTS UP WHILE ENGINE IS RUNNING - b) OIL PRESSURE CAUTION LAMP LIGHTS UP WHILE ENGINE IS RUNNING - c) HST FILTER CLOGGING CAUTION LAMP LIGHTS UP (WHILE FILTER IS NOT CLOGGED) - M-4. TROUBLE IN HST OIL TEMPERATURE GAUGE - a) GAUGE DOES NOT RISE ABOVE C (LOWEST POINT) - b) GAUGE DOES NOT LOWER BELOW H (HIGHEST POINT) - c) HST OIL TEMPERATURE INDICATED BY GAUGE IS DIFFERENT FROM ACTUAL TEMPERATURE - M-5. TROUBLE IN ENGINE WATER TEMPERATURE GAUGE - a) GAUGE DOES NOT RISE ABOVE C (LOWEST POINT) - b) GAUGE DOES NOT LOWER BELOW H (HIGHEST POINT) - c) ENGINE WATER TEMPERATURE INDICATED BY GAUGE IS DIFFERENT FROM ACTUAL TEMPERATURE - M-6. TROUBLE IN FUEL LEVEL GAUGE - a) GAUGE DOES NOT RISE ABOVE E (LOWEST POINT) - b) GAUGE DOES NOT LOWER BELOW F (HIGHEST POINT) - c) FUEL LEVEL INDICATED BY GAUGE IS DIFFERENT FROM ACTUAL LEVEL - M-7. SERVICE METER DOES NOT OPERATE AFTER ENGINE IS STARTED - M-8. MONITOR PANEL LAMP DOES NOT LIGHT UP (WHILE HEADLAMP IS NORMAL) - M-9. TROUBLE IN DISPLAY OF TRAVEL SPEED (WHILE ACTUAL TRAVEL SPEED IS NORMAL) - a) TRAVEL SPEED IS NOT DISPLAYED - b) DISPLAYED SPEED IS DIFFERENT FROM ACTUAL TRAVEL SPEED 30 DISASSEMBLY AND ASSEMBLY - METHOD OF USING MANUAL - PRECAUTIONS WHEN CARRYING OUT OPERATION - SPECIAL TOOL LIST - SKETCHES OF SPECIAL TOOLS - REMOVAL OF FUEL INJECTION PUMP ASSEMBLY - INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY - REMOVAL OF CYLINDER HEAD ASSEMBLY - INSTALLATION OF CYLINDER HEAD ASSEMBLY - REMOVAL OF ENGINE FRONT SEAL - INSTALLATION OF ENGINE FRONT SEAL - REMOVAL OF ENGINE REAR SEAL - INSTALLATION OF ENGINE REAR SEAL - REMOVAL OF RADIATOR GUARD ASSEMBLY - INSTALLATION OF RADIATOR GUARD ASSEMBLY - DISASSEMBLY OF RADIATOR, OIL COOLER, AND CHARGE AIR COOLER ASSEMBLIES - ASSEMBLY OF RADIATOR, OIL COOLER, AND CHARGE AIR COOLER ASSEMBLIES - REMOVAL OF ENGINE ASSEMBLY - INSTALLATION OF ENGINE ASSEMBLY - REMOVAL OF DAMPER - INSTALLATION OF DAMPER - REMOVAL OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY - INSTALLATION OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY - DISASSEMBLY OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY - ASSEMBLY OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY - REMOVAL OF IDLER AND RECOIL SPRING ASSEMBLY - INSTALLATION OF IDLER AND RECOIL SPRING ASSEMBLY - DISASSEMBLY OF RECOIL SPRING ASSEMBLY - ASSEMBLY OF RECOIL SPRING ASSEMBLY - DISASSEMBLY OF IDLER ASSEMBLY - ASSEMBLY OF IDLER ASSEMBLY - DISASSEMBLY OF TRACK ROLLER ASSEMBLY - ASSEMBLY OF TRACK ROLLER ASSEMBLY - DISASSEMBLY OF CARRIER ROLLER ASSEMBLY - ASSEMBLY OF CARRIER ROLLER ASSEMBLY - SPREADING TRACK SHOE ASSEMBLY - INSTALLATION OF TRACK SHOE ASSEMBLY - REMOVAL OF HST PUMP ASSEMBLY - INSTALLATION OF HST PUMP ASSEMBLY - REMOVAL OF MAIN CONTROL VALVE ASSEMBLY - INSTALLATION OF MAIN CONTROL VALVE ASSEMBLY - DISASSEMBLY OF MAIN CONTROL VALVE ASSEMBLY - ASSEMBLY OF MAIN CONTROL VALVE ASSEMBLY - DISASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES - ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES - REMOVAL OF BLADE ASSEMBLY - INSTALLATION OF BLADE ASSEMBLY - REMOVAL OF OPERATOR'S SEAT TRAME ASSEMBLY - INSTALLATION OF OPERATOR'S SEAT FRAME ASSEMBLY - REMOVAL OF FUEL TANK ASSEMBLY - INSTALLATION OF FUEL TANK ASSEMBLY - REMOVAL OF HYDRAULIC TANK ASSEMBLY - INSTALLATION OF HYDRAULIC TANK ASSEMBLY 90 OTHERS - HYDRAULIC CIRCUIT DIAGRAM (1/2)(D31EX-21 SERIAL NO.50001-50097 D31PX-21 SERIAL NO.50001-50181 D37EX-21 SERIAL NO. 5001-5104 D37PX-21 SERIAL NO. 5001-5090) - HYDRAULIC CIRCUIT DIAGRAM (1/2)(D31EX-21 SERIAL NO.50098 AND UP D31PX-21 SERIAL NO.50182 AND UP D37EX-21 SERIAL NO.5105 AND UP D37PX-21 SERIAL NO.5091 AND UP) - HYDRAULIC CIRCUIT DIAGRAM (2/2) - HYDRAULIC CIRCUIT DIAGRAM (2/2) (FOR D37EX, PX-21 EU SPEC.) - ELECTRICAL CIRCUIT DIAGRAM (1/2) - ELECTRICAL CIRCUIT DIAGRAM (2/2) - ELECTRICAL CIRCUIT DIAGRAM FOR AIR CONDITIONER
Komatsu D31EX D37EX PX-12 - Repair, Workshop Manual and Electrical Wiring Diagrams
inicio - index
coche - car
moto
4x4
quad - buggy
cami?n - truck
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