Komatsu Backhoe Loader WB91R-2, WB93R-2 Workshop Service Manual

Original Illustrated Factory Workshop Service Manual for Komatsu Backhoe Loader WB91,93. 
Original factory manuals for Komatsu Loaders, Dozers, Excavators contains high quality images, circuit diagrams and instructions to help you to operate, maintenance and repair your truck. All Manuals Printable, contains Searchable Text and Navigation Bookmarks
 
Covered models:
    WB91R-2 sn: 91F20145 and up
    WB93R-2 sn: 93F23453 and up
 
Format: PDF, 504 Pages
Language: English
 
Contents:
    10 STRUCTURE AND FUNCTION
        Power train 
        Transmission (4WD) 
        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 cylinder 
        Backhoe cylinder 
        Air-conditioning unit
        How the air-conditioning unit functions
        Electrical diagram (1/6) 
        Electrical diagram (2/6) 
        Electrical diagram (3/6) 
        Electrical diagram (4/6) 
        Electrical diagram (5/6) 
        Electrical diagram (6/6) 
        Electrical diagram (Air conditioning) 
    20 TESTING AND ADJUSTING
        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
    30 DISASSEMBLY AND ASSEMBLY
        HOW TO READ THE MANUAL...............................
        PRECAUTIONS TO BE TAKEN WHILE WORKING
        SPECIAL TOOLS ....................................................
        STARTING MOTOR
        Removal and installation .........................................
        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 
        CONVERTOR
        TRANSMISSION-REVERSE, DIRECTION
        INDICATOR AND HEADLIGHT DIPPER BEAM
        CONTROL GROUP
        STEERING UNIT
        WORKING BRAKE PUMP GROUP
        FRONT WORKING EQUIPMENT CONTROL VALVE
        FRONT AND BACKOHE 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 (Front bucket raise and tilt, boom, arm, bucket, outriggers and telescopic arm)
        BOOM SWING CYLINDER
        BACKHOE BACKFRAME LOCK CYLINDER
        BOOM SAFETY CYLINDER
        BACKHOE WORKING EQUIPMENT
        BACKHOE BUCKET
        ARM
        JIG ARM
        2nd ARM
        2nd ARM GUIDES
        BACKHOE BOOM
        BACKHOE SWING BRACKET
        BACKHOE BACKFRAME
    40 MAINTENANCE STANDARD.
        Transmission 
        Front axle
        Rear axle 
        Hydraulic pump
        2-Spool control valve 
        3-Spool control valve 
        3-Spool control valve (With Return to Dig) 
        6-Spool control valve 
        7-Spool control valve
        8-Spool control valve
        Brake pump 
        Shovel cylinders 
        Backhoe cylinders 
        Front working equipment
        Swing bracket
        Backhoe working equipment .
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