Komatsu WB140-2-N and WB150-2-N Backhoe Loaders (USA) Workshop Manual (CEBD009802)

Illustrated factory Workshop Manual for Komatsu Backhoe Loaders Models WB140-2-N and WB150-2-N.

This manual will assist you in diagnosing, repairing, and adjusting for your backhoe loader.
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):
   WB140-2-N (SN: A20001-20636)
   WB150-2-N (SN: A60001-60028)

Format: PDF, 406 pages
Language: English
Table of Contents:
   FOREWORD
      SAFETY
      GENERAL
      HOW TO READ THE SHOP MANUAL
      HOISTING INSTRUCTIONS
      COATING MATERIALS
      STANDARD TIGHTENING TORQUE
      ELECTRIC WIRE CODE
      CONVERSION TABLES
   STRUCTURE AND FUNCTION
      POWER TRAIN
      TRANSMISSION
      FRONT AXLE
      REAR AXLE
      HYDRAULIC PUMP
      STEERING UNIT
      HYDRAULIC CIRCUIT
      SHOVEL CONTROL VALVE
      BACKHOE CONTROL VALVE
      CLSS (CLOSED CENTER LOAD SENSING SYSTEM
      SOLENOID VALVE
      SAFETY VALVE
      BRAKE PUMP
      SHOVEL CYLINDERS
      BACKHOE CYLINDERS
      FRONT WORKING EQUIPMENT
      SWING BRACKET
      BACKHOE WORKING EQUIPMENT
      AIR CONDITIONING UNIT
   TESTING, ADJUSTING AND TROUBLESHOOTING
      STANDARD VALUE TABLES FOR ENGINE
      STANDARD VALUE TABLE FOR CHASSIS
      SPECIAL TOOLS
      ENGINE SPEED
      VALVE CLEARANCE
      COMPRESSION PRESSURE
      FUEL INJECTION TIMING
      FAN AND ALTERNATOR DRIVE BELT
      COMPRESSOR DRIVE BELT
      ACCELERATOR PEDAL AND LEVER TRAVEL
      BRAKE PEDAL TRAVEL AND MICROSWITCHES
      BLEEDING AIR
      ATTACHMENTS HYDRAULIC CIRCUIT
      LOAD SENSING SIGNAL (LS VALVE)
      UNLOADING VALVE
      UNLOADING VALVE FUNCTION
      PRIORITY VALVE
      STEERING CONTROL SYSTEM PRESSURE
      BRAKE SYSTEM
      ENGINE SPEED UNDER LOAD
      POWER TRAIN GROUP
      POWER TRAIN CLUTCHES
      SENSOR FOR RETURN TO DIG DEVICE
      CAUSES OF HYDRAULIC DRIFT
      AIR CONDITIONING UNIT
      FRONT AXLE
      REAR AXLE
      TRANSMISSION
   DISASSEMBLY AND ASSEMBLY
      METHOD OF USING THIS MANUAL
      PRECAUTIONS DURING SERVICE OR REPAIR OPERATIONS
      ENGINE COMPONENTS
      FRONT END LOADER CYLINDER LOCK
      STARTER, ALTERNATOR AND COMPRESSOR
      BATTERY DISCONNECT SWITCH
      FRONT COUNTERWEIGHT
      RADIATOR, CONDENSER AND OIL COOLERS
      MUFFLER AND EXHAUST STACK
      ENGINE HOOD AND OPERATORS CAB
      AIR CONDITIONING AND HEATER
      FUEL AND HYDRAULIC OIL TANKS
      ENGINE AND TRANSMISSION
      PISTON PUMP
      TRANSMISSION
      TORQUE CONVERTER
      STEERING COLUMN AND COLUMN CONTROLS
      MASTER BRAKE CYLINDER
      FRONT END LOADER CONTROL VALVE
      FRONT AXLE ASSEMBLY
      REAR AXLE
      FRONT BUCKET BOOM CYLINDERS
      FRONT BUCKET TILT CYLINDER
      FRONT BUCKET
      FRONT WORKING EQUIPMENT
      BACKHOE CONTROL VALVE
      BACKHOE BOOM CYLINDER
      BACKHOE ARM CYLINDER
      TELESCOPIC ARM CYLINDER
      BACKHOE BUCKET CYLINDER
      OUTRIGGER CYLINDERS
      BACKHOE SWING CYLINDERS
      CYLINDERS (FRONT BUCKET RAISE AND TILT, BOOM, ARM, OUTRIGGERS, AND TELESCOPIC ARM)
      CYLINDER (BOOM SWING)
      BOOM SAFETY CYLINDER
      BACKHOE WORK EQUIPMENT
      BACKHOE BUCKET
      BACKHOE ARM
      TELESCOPIC ARM (COMPLETE)
      BACKHOE BOOM
      BACKHOE SWING BRACKET
      BACKHOE OUTRIGGERS
   OTHERS
      HYDRAULIC CIRCUIT (WB150-2N)
      HYDRAULIC CIRCUIT (WB140-2N)
      ELECTRICAL SCHEMATIC