Komatsu PC400HD-6LM and PC400LC-6LM (SN from A85001) Crawler Excavators (USA) Workshop Manual (CEBD005302)

Illustrated factory Workshop Manual for Komatsu Crawler Excavators Models PC400HD-6LM and PC400LC-6LM.

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

Covered Models (USA):
   PC400HD-6LM (SN: A85001-)
   PC400LC-6LM (SN: A85001-)

Format: PDF, 868 pages
Language: English
Table of Contents:
   SAFETY
      SAFETY NOTICE
   FOREWORD
      GENERAL
      HOW TO READ THE SHOP MANUAL
      HOISTING INSTRUCTIONS
      COATING MATERIALS
      STANDARD TIGHTENING TORQUE
      ELECTRIC WIRE CODE
      CONVERSION TABLES
   GENERAL
      SPECIFICATION DRAWINGS
      WORK EQUIPMENT
      SPECIFICATIONS
      WEIGHT TABLE
      FUEL COOLANT AND LUBRICANTS
   STRUCTURE AND FUNCTION
      PARTS RELATED TO ENGINE
      RADIATOR, OIL COOLER
      POWER TRAIN
      FINAL DRIVE
      SWING CIRCLE
      SWING MACHINERY
      TRACK FRAME, RECOIL SPRING
      TRACK FRAME, RECOIL SPRING
      TRACK FRAME, RECOIL SPRING
      TRACK SHOE
      HYDRAULIC PIPING DRAWING
      HYDRAULIC CIRCUIT DIAGRAM
      HYDRAULIC TANK, HYDRAULIC FILTER
      HYDRAULIC PUMP
      CONTROL VALVE
      SELF REDUCING PRESSURE VALVE
      SUCTION SAFETY VALVE
      CLSS
      SWING MOTOR
      TRAVEL MOTOR
      VALVE CONTROL
      WORK EQUIPMENT PPC VALVE
      TRAVEL PPC VALVE
      SERVICE PPC VALVE
      PPC SAFETY LOCK VALVE
      PPC ACCUMULATOR
      PPC SHUTTLE VALVE, TRAVEL JUNCTION VALVE
      LS-EPC VALVE
      SOLENOID VALVE
      BOOM HOLDING VALVE
      WORK EQUIPMENT
      AIR CONDITIONER
      ACTUAL ELECTRICAL WIRING DIAGRAM
      ENGINE CONTROL
      ELECTRONIC CONTROL SYSTEM
      MACHINE MONITOR SYSTEM
   TESTING, ADJUSTING AND TROUBLESHOOTING
      STANDARD VALUE TABLE
      SERVICE TOOLS TABLE
      MEASURING ENGINE SPEED
      MEASURING EXHAUST COLOR
      VALVE CLEARANCE
      COMPRESSION PRESSURE
      BLOW BY PRESSURE
      FUEL INJECTION TIMING
      ENGINE OIL PRESSURE
      FAN BELT TENSION
      A/C COMPRESSOR BELT
      ENGINE SPEED SENSOR
      BOOST PRESSURE
      GOVERNOR MOTOR LEVER STROKE
      WORK, SWING, AND TRAVEL CIRCUIT
      TVC VALVE OUTPUT PRESSURE
      LS VALVE OUTPUT AND DIFFERENTIAL PRESSURE
      CONTROL CIRCUIT OIL PRESSURE
      SOLENOID VALVE OUTPUT PRESSURE
      PPC VALVE OUTPUT PRESSURE AND SHUTTLE VALVE
      WORK EQUIPMENT, SWING PPC VALVE
      TRAVEL DEVIATION
      LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT
      MEASURING OIL LEAKAGE
      RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
      TESTING CLEARANCE OF SWING CIRCLE BEARING
      WEAR OF SPROCKET
      TRACK SHOE TENSION
      TROUBLESHOOTING GENERAL
      TROUBLESHOOTING
      TROUBLSHOOTING OF COMMUNICATION ABNORMALITY SYSTEM (N-MODE)
      TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER, GOVERNOR CONTROL SYSTEM (E-MODE)
      TROUBLESHOOTING OF ENGINE SYSTEM (S-MODE)
      TROUBLESHOOTING OF GOVERNOR PUMP CONTROLLER, PUMP CONTROL SYSTEM (C-MODE)
      TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER, INPUT SIGNAL SYSTEM (F-MODE)
      TROUBLESHOOTING OF MACHINE MECHANICAL MODE (H-MODE)
      TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M-MODE)
   DISASSEMBLY AND ASSEMBLY
      METHOD OF USING MANUAL
      SPECIAL TOOL LIST
      SKETCHES OF SPECIAL TOOLS
      STARTING MOTOR
      ALTERNATOR
      ENGINE OIL COOLER
      FUEL INJECTION PUMP
      WATER PUMP
      NOZZLE HOLDER
      TURBOCHARGER
      THERMOSTAT
      FRONT ENGINE SEAL
      REAR ENGINE SEAL
      CYLINDER HEAD
      GOVERNOR MOTOR
      AFTERCOOLER CORE
      OIL COOLER
      RADIATOR, OIL COOLER
      ENGINE, MAIN PUMP
      DAMPER
      FUEL TANK
      CENTER SWIVEL JOINT
      FINAL DRIVE
      TRAVEL MOTOR
      SPROCKET
      SWING MOTOR
      SWING MACHINERY
      REVOLVING FRAME
      SWING CIRCLE
      IDLER AND RECOIL SPRING
      IDLER
      RECOIL SPRING
      TRACK ROLLER
      CARRIER ROLLER
      TRACK CHAIN
      HYDRAULIC TANK
      MAIN PUMP
      MAIN PUMP OIL SEAL
      CONTROL VALVE
      PUMP MERGE DIVIDER VALVE
      PRESSURE COMPENSATION VALVE
      FRONT PUMP SERVO VALVE
      REAR PUMP SERVO VALVE
      LS-EPC SOLENOID VALVE
      SOLENOID VALVE
      WORK EQUIPMENT PPC VALVE
      TRAVEL PPC VALVE
      PPC SHUTTLE VALVE
      BOOM LOCK VALVE
      BOOM CYLINDER
      ARM CYLINDER
      BUCKET CYLINDER
      HYDRAULIC CYLINDER
      THREADED STYLE PISTON
      WORK EQUIPMENT
      BUCKET
      ARM
      BUCKET AND ARM
      BOOM
      OPERATOR’S CAB
      COUNTERWEIGHT
      COMPRESSOR
      CONDENSER
      RECEIVER TANK
      AIR CONDITIONER UNIT
      GOVERNOR, PUMP CONTROLLER
      MONITOR PANEL
      CONTROL STAND CASE
   MAINTENANCE STANDARD
      ENGINE MOUNT
      RADIATOR AND OIL COOLER MOUNT
      SWING MACHINERY
      SWING CIRCLE
      FINAL DRIVE
      TRACK FRAME AND RECOIL SPRING
      IDLER
      CARRIER ROLLER
      TRACK ROLLER
      TRACK SHOE
      TRACK SHOE
      HYDRAULIC PUMP
      CONTROL VALVE
      SELF REDUCING PRESSURE VALVE
      SUCTION SAFETY VALVE
      SWING MOTOR
      TRAVEL MOTOR
      WORK EQUIPMENT • SWING PPC VALVE
      TRAVEL PPC VALVE
      SERVICE PPC VALVE
      PPC SHUTTLE VALVE, TRAVEL JUNCTION VALVE
      LS-EPC VALVE
      SOLENOID VALVE
      CENTER SWIVEL JOINT
      BOOM HOLDING VALVE
      HYDRAULIC CYLINDER
      WORK EQUIPMENT
      DIMENSIONS OF WORK EQUIPMENT
   OTHERS
      Foldout 20-203 Connector types and mounting location
      Foldout 20-229 Details of troubleshooting and troubleshooting procedures
      Foldout 20-353 Actions taken by controller when abnormality occurs and problems on machine
      Foldout 20-354 Action taken by controller when abnormality occurs and problems on machine
      Foldout 20-355 Judgement table for governor pump controller and engine related parts
      Foldout 20-356 Electrical circuit diagram for E mode
      Foldout 20-365 E-8 Engine does not start
      Foldout 20-366 E-9a Engine speed is irregular
      Foldout 20-367 E-9b There is hunting
      Foldout 20-368 E-10 Lack of output, engine high idle speed is low
      Foldout 20-369 E-11 Engine does not stop
      Foldout 20-453 Actions taken by controller when abnormality occurs and problems on machine
      Foldout 20-454 Actions taken by controller when abnormality occurs and problemss
      Foldout 20-455 Actions taken by controller when abnormality occurs and problems on machine
      Foldout 20-456 Actions taken by controller when abnromality occurs and problems on machine
      Foldout 20-457 Judgement table for governor, pump controller (pump control system) and hydraulic related parts
      Foldout 20-458 Electric circuit diagram for C mode
      Foldout 20-461 C-2 [E232] Short circuit in front pump TVC solenoid is displayed
      Foldout 20-462 C-3 [E233] Disconnection in front pump TVC solenoid system is displayed
      Foldout 20-463 C-4 [E236] Short circuit in rear pump TVC solenoid system is displayed
      Foldout 20-464 C-5 [E237] Disconnection in rar pump TVC solenid system is displayed
      Foldout 20-467 C-7 [E208] Disconnection in active mode, boom, solenoid system is displayed
      Foldout 20-468 C-8 [E203] Short circuit in swing brake solenoid system is displayed
      Foldout 20-469 C-9 [E213] Disconnection in swing brake solenoid system is displayed
      Foldout 20-471 C-11 [E214] Disconnection in pump merge divider solenoid system is displayed
      Foldout 20-473 C-13 [E216] Disconnection in travel speed selector solenoid system is displayed
      Foldout 20-475 C-15 [E235] Disconnection in active mode, swlin solenoid system is displayed
      Foldout 20-503 Electric circuit diagram for F mode
      Foldout 20-553 Table of failure modes and causes (1/2)
      Foldout 20-554 Table of fialure modes and causes (2/2)
      Foldout 20-555 H-1 Speed of all work equipment, swing, travel are slow or lack power
      Foldout 20-557 H-4 Abnormal noise generated around pump
      Foldout 20-557 H-5 Auto decel does not work when PPC shuttle valve is cause
      Foldout 20-557 H-6 Fine control ability is poor or response is poor
      Foldout 20-558 H-7 Boom is slow or lacks power
      Foldout 20-559 H-8 Arm is slow or lacks power
      Foldout 20-560 H-9 Bucket is slow or lacks power
      Foldout 20-567 H-21 Travel speed is slow