Komatsu WB91R-2 (SN from 91F20145) and WB93R-2 (SN from 93F23453) Backhoe Loaders Workshop Manual (WEBM000404)

Illustrated factory Workshop Manual for Komatsu Backhoe Loaders Models WB91R-2 and WB93R-2.

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:
   WB91R-2 (SN: 91F20145-)
   WB93R-2 (SN: 93F23453-)

Format: PDF, 504 pages
Language: English
Table of Contents:
   LIST OF REVISED PAGES
   SAFETY
   FOREWORD
   HOW TO READ THE SHOP MANUAL
   HOISTING INSTRUCTIONS
   STANDARD TIGHTENING TORQUE
   COATI NG MATERI ALS
   ELECTRIC
   WEIGHT TABLE
   TABLE OF OIL AND COOLANT QUANTITIES
   CONVERSION TABLE
   STRUCTURE AND FUNCTION
      POWER TRAIN
      TRANSMISSION (4WD)
      TRANSMISSION
      DRIVE SHAFTS
      CONTROL VALVE BLOCK
      FRONT AXLE
      REAR AXLE
      HYDRAULIC PUMP
      STEERING UNIT
      HYDRAULIC CIRCUIT
      SHOVEL CONTROL VALVE
      BACKHOE CONTROL VALVE
      CLSS
      SOLENOID VALVE
      SAFETY VALVE
      BRAKE PUMP
      SHOVEL CYLINDERS
      BACKHOE CYLINDERS
      AIR-CONDITIONING UNIT
      HOW THE AIR-CONDITIONING UNIT FUNCTIONS
      ELECTRICAL DIAGRAM
      ELECTRICAL DIAGRAM (AIR CONDITIONING)
   TESTING AND ADJUSTMENTS
      NORMAL OR STANDARD TECHNICAL DATA
      SPECIAL TOOLS
      MEASURING ENGINE SPEED
      ADJUSTING VALVE CLEARANCE
      MEASURING COMPRESSION PRESSURE
      TESTING AND ADJUSTING FUEL INJECTION TIMING
      CHECKING AND TIGHTENING THE FAN - BELT
      CHECKING AND TIGHTENING THE COMPRESSOR FAN - BELT
      MEASURING ACCELERATOR PEDAL OPERATING TRAVEL AND ACCELERATOR LEVER
      ADJUSTING BRAKE PEDAL TRAVEL, BRAKE ALIGNMENT, MICROSWITCHES
      AIR BLEEDING - RELEASING RESIDUAL PRESSURE
      CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT
      TESTING AND ADJUSTING OF LOAD SENSING SIGNAL (LS VALVE)
      TESTING AND ADJUSTING OF UNLOADING VALVE
      CHECKING UNLOADING VALVE FUNCTIONALITY
      TESTING PRIORITY VALVE OPERATION
      TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE
      TESTING BRAKE SYSTEM
      CONTROL OF THE ENGINE SPEED UNDER LOAD
      TESTING PRESSURES IN THE POWER TRAIN GROUP
      TESTING THE CORRECT FUNCTIONING OF THE POWER TRAIN CLUTCHES
      ADJUSTING THE SENSOR FOR RETURN TO DIG DEVICE
      ANALYSIS OF CAUSES HYDRAULIC DRIFT
      TESTING THE AIR-CONDITIONING UNIT
      EMPTYING THE AIR-CONDITIONING UNIT
      TROUBLESHOOTING
   REMOVAL AND INSTALLATION
      HOW TO READ THE MANUAL
      PRECAUTIONS TO BE TAKEN WHILE WORKING
      SPECIAL TOOLS
      STARTING MOTOR
      ALTERNATOR
      AIR-CONDITIONING UNIT COMPRESSOR
      INJECTION PUMP
      INJECTION NOZZLES
      THERMOSTAT
      COOLING LIQUID PUMP
      TURBOCOMPRESSOR
      CYLINDER HEAD
      FRONT COUNTERWEIGHT
      RADIATOR GROUP
      CONDENSER
      MUFFLER
      EXHAUST PIPE
      ENGINE HOOD
      CAB
      HEAT AND AIR-CONDITIONING GROUP
      FUEL TANK
      HYDRAULIC OIL TANK
      ENGINE-GEARBOX-PUMP GROUP
      PISTON PUMP
      TRANSMISSION
      OVERHAULING THE TRANSMISSION
      CONVERTOR
      TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
      STEERING UNIT
      WORKING BRAKE PUMP GROUP
      FRONT WORKING EQUIPMENT CONTROL VALVE
      FRONT AND BACKHOE CONTROL VALVE
      FRONT AXLE
      REAR AXLE
      FRONT BUCKET BOOM-RAISING CYLINDER
      FRONT BUCKET TILT CYLINDERS
      FRONT BUCKET
      FRONT WORKING EQUIPMENT
      BACKHOE CONTROL VALVE
      BACKHOE BOOM CYLINDER
      BACKHOE ARM CYLINDER
      JIG ARM CYLINDER
      BACKHOE BUCKET CYLINDER
      OUTRIGGER CYLINDERS
      BACKHOE SWING CYLINDERS
      BACKHOE BACKFRAME LOCK CYLINDER
      CYLINDERS
      BOOM SWING CYLINDER
      BACKHOE BACKFRAME LOCK CYLINDER
      BOOM SAFETY CYLINDER
      BACKHOE WORKING EQUIPMENT
      BACKHOE BUCKET
      ARM
      JIG ARM
      nd ARM
      nd ARM GUIDES
      BACKHOE BOOM
      BACKHOE SWING BRACKET
      BACKHOE BACKFRAME
   STANDARD MAINTENANCE
      TRANSMISSION
      FRONT AXLE
      REAR AXLE
      HYDRAULIC PUMP
      SPOOL CONTROL VALVE
      SPOOL CONTROL VALVE
      SPOOL CONTROL VALVE (With Returnto Dig)
      SPOOL CONTROL VALVE
      SPOOL CONTROL VALVE
      SPOOL CONTROL VALVE
      BRAKE PUMP
      SHOVEL CYLINDERS
      BACKHOE CYLINDERS
      FRONT WORKING EQUIPMENT
      SWING BRACKET
      BACKHOE WORKING EQUIPMENT