Komatsu D31EX-21, D31PX-21, D37EX-21 and D37PX-21 Crawler Dozers Workshop Manual (SEBM025607)

Illustrated factory Workshop Manual for Komatsu Crawler Dozers Models D31EX-21, D31PX-21, D37EX-21 and D37PX-21.

This manual will assist you in diagnosing, repairing, and adjusting for your crawler dozer.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.

Covered Models:
   D31EX-21 (SN: 50001-50500)
   D31PX-21 (SN: 50001-50500)
   D37EX-21 (SN: 05001-05500)
   D37PX-21 (SN: 05001-05500)

Format: PDF, 407 pages
Table of Contents:
   GENERAL
      SPECIFICATION DRAWING
      SPECIFICATIONS
      WEIGHT TABLE
      TABLE OF FUEL, COOLANT AND LUBRICANTS
   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
   TESTING AND ADJUSTING
      STANDARD VALUE TABLE FOR ENGINE
      STANDARD VALUE TABLE FOR CHASSIS
      STANDARD VALUE TABLE FOR ELECTRICAL SYSTEM
      TESTING AND ADJUSTING
      TROUBLESHOOTING
   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
   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