Komatsu PC78US-6 (SN from 04001, 04809-) and PC78UU-6 (SN from 22832) Crawler Excavators Workshop Manual (SEBM025109)

Illustrated factory Workshop Manual for Komatsu Crawler Excavators Models PC78US-6 and PC78UU-6.

This manual will assist you in diagnosing, repairing, and adjusting for your crawler excavator.
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Covered Models:
   PC78US-6 (SN: 04001-; 04809- for Norway)
   PC78UU-6 (SN: 22832-)

Format: PDF, 785 pages
Language: English
Publication Date: 01 Aug 2003
Table of Contents:
   01 GENERAL
      SPECIFICATION DIMENSIONS DRAWING
      WORKING RANGE DRAWING
      SPECIFICATIONS
      WEIGHT TABLE
      LIST OF LUBRICANTS AND COOLANT
   10 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD
      PTO
      COOLING SYSTEM
      POWER TRAIN SYSTEM
      SWING CIRCLE
      SWING MACHINERY
      TRACK FRAME AND IDLER CUSHION
      IDLER
      TRACK ROLLER
      CARRIER ROLLER
      SPROCKET
      TRACK SHOE
      ARRANGEMENT OF HYDRAULIC COMPONENTS
      HYDRAULIC TANK AND OIL FILTER
      CENTER SWIVEL JOINT
      TRAVEL MOTOR
      WORK EQUIPMENT CYLINDER
      SOLENOID VALVE
      MULTI-CONTROL VALVE
      ACCUMULATOR FOR BRAKE
      HYDRAULIC PUMP PC78US-6 (with blade) Serial No.: 4001 - 5500; PC78UU-6 (with blade) Serial No.: 22832 - 23500
      CONTROL VALVE
      CLSS
      SWING MOTOR
      WORK EQUIPMENT AND SWING PPC VALVE
      TRAVEL PPC VALVE
      OFFSET PPC VALVE, ATTACHMENT PPC VALVE, AND BLADE PPC VALVE
      WORK EQUIPMENT
      DIMENSIONS OF EACH PART OF WORK EQUIPMENT
      AIR CONDITIONER PIPING SYSTEM
      ELECTRIC CONTROL SYSTEM
      SYSTEM COMPONENTS
      MONITOR SYSTEM
      SENSORS
   20 TESTING AND ADJUSTING
      STANDARD VALUE TABLE
      TESTING AND ADJUSTING
      TROUBLESHOOTING
   30 DISASSEMBLY AND ASSEMBLY
      METHOD OF USING MANUAL
      PRECAUTIONS WHEN CARRYING OUT OPERATION
      SPECIAL TOOL LIST
      REMOVAL, INSTALLATION OF COUNTERWEIGHT ASSEMBLY
      REMOVAL, INSTALLATION OF INJECTION PUMP ASSEMBLY
      REMOVAL, INSTALLATION OF CYLINDER HEAD ASSEMBLY
      REMOVAL, INSTALLATION OF MAIN PUMP ASSEMBLY
      REMOVAL, INSTALLATION OF CONTROL PUMP ASSEMBLY
      REMOVAL, INSTALLATION OF ENGINE AND MAIN PUMP ASSEMBLY
      REMOVAL, INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY
      REMOVAL, INSTALLATION OF RADIATOR ASSEMBLY
      REMOVAL, INSTALLATION OF SWING MOTOR AND SWING MACHINERY ASSEMBLY
      DISASSEMBLY, ASSEMBLY OF SWING MACHINERY ASSEMBLY
      REMOVAL, INSTALLATION OF SWING MOTOR ASSEMBLY
      REMOVAL, INSTALLATION OF CENTER SWIVEL JOINT ASSEMBLY
      DISASSEMBLY, ASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY
      REMOVAL, INSTALLATION OF CONTROL VALVE ASSEMBLY
      ASSEMBLY OF CONTROL VALVE ASSEMBLY
      ASSEMBLY OF WORK EQUIPMENT PPC VALVE ASSEMBLY
      ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY
      REMOVAL, INSTALLATION OF HYDRAULIC TANK ASSEMBLY
      REMOVAL, INSTALLATION OF FUEL TANK ASSEMBLY
      REMOVAL, INSTALLATION OF CONTROLLER ASSEMBLY
      REMOVAL, INSTALLATION OF MONITOR PANEL ASSEMBLY
      REMOVAL, INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY
      REMOVAL, INSTALLATION OF OPERATOR'S CAB ASSEMBLY
      REMOVAL, INSTALLATION OF FLOOR FRAME ASSEMBLY
      REMOVAL, INSTALLATION OF REVOLVING FRAME ASSEMBLY
      REMOVAL, INSTALLATION OF SWING CIRCLE ASSEMBLY
      REMOVAL, INSTALLATION OF WORK EQUIPMENT ASSEMBLY
      REMOVAL, INSTALLATION OF FIRST BOOM ASSEMBLY
      REMOVAL, INSTALLATION OF SECOND BOOM ASSEMBLY
      REMOVAL, INSTALLATION OF OFFSET BRACKET ASSEMBLY
      EXPANSION, INSTALLATION OF STEEL SHOE, RUBBER PAD SHOE, ROAD LINER ASSEMBLY
      REMOVAL, INSTALLATION OF RUBBER SHOE ASSEMBLY
      REMOVAL, INSTALLATION OF FINAL DRIVE ASSEMBLY
      ASSEMBLY OF IDLER ASSEMBLY
      DISASSEMBLY, ASSEMBLY OF RECOIL SPRING ASSEMBLY
      DISASSEMBLY, ASSEMBLY OF TRACK ROLLER ASSEMBLY
      DISASSEMBLY, ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY
   50 OTHER SPECIFICATIONS
      PC78US-6 (FOR NORWAY)
      GENERAL
      STRUCTURE, FUNCTION, AND MAINTENANCE STANDARD
      TROUBLESHOOTING
   90 OTHERS
      HYDRAULIC CIRCUIT DIAGRAM
      ELECTRICAL CIRCUIT DIAGRAM