Komatsu Wheel Loader WA250-5H, WA250PT-5H Workshop Service Manual

Original Illustrated Factory Workshop Service Manual for Komatsu Wheel Loader WA250. 
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:
    WA250-5H sn: WA250H50051 and up
    WA250PT-5H sn: WA250H60051 and up
 
Format: PDF, 849 Pages
Language: English
 
Contents:
    01 GENERAL 
        General assembly drawings  
        Specifications 
        Weight table 
        List of lubricant and coolant 
    10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD 
         Engine mount and transfer mount  
         Damper 
         Cooling system  
         Power train  
         Power train system diagram  
         Drive shaft (propeller shaft)  
         HST hydraulic piping diagram  
         HST pump  
         High-pressure relief valve 
         Low-pressure relief valve 
         HST charge pump  
         Speed-related valve (DA valve) 
         High-pressure cut-off valve 
         HST motor  
         EP servo valve 
         HA servo valve  
         Forward-reverse shuttle valve  
         Transfer 
         Transfer oil cooler 
         Clutch solenoid valve 
         Axle 
         Differential 
         Limited-slip differential 
         Final drive 
         Axle mounting and center hinge pin  
         Steering piping 
         Steering column 
         Priority valve  
         Orbit-roll valve  
         2-way restrictor valve 
         Steering cylinder 
         Emergency steering piping 
         Emergency steering valve  
         Brake piping 
         Brake valve 
         Inching valve 
         Charge valve  
         Accumulator (for brake)  
         Slack adjuster 
         Brake 
         Parking brake control 
         Parking brake  
         Hydraulic piping  
         Work equipment lever linkage  
         Hydraulic tank 
         4-gear pump unit 
         Accumulator (for ppc circuit)  
         Lock valve  
         Bypass valve 
         Quick coupler valve 
         E.C.S.Svalve 
         Accumulator (for E.C.S.S.) 
         Hydraulic piping of cooling system 
         Cooling fan motor 
         Work equipment control valve 
         Work equipment PPC valve  
         Attachment PPC valve  
         Work equipment linkage  
         Bucket 
         Control of bucket positioner, boom kick-out, and dump speed 
         Work equipment cylinder  
         Air conditioner  
         Machine monitoring system  
         Machine monitor  
         List of items displayed on monitor 
         Electrical system (HST controller system) 
         HST controller  
         Function of selecting forward-reverse selector switch 
         Engine start circuit  
         Engine stop circuit 
         Preheating circuit (automatic preheating system) 
         Parking brake circuit  
         Electronically controlled suspension system 
         Sensors .
    20 TESTING AND ADJUSTMENT
        Standard value table 
        Standard value table for engine
        Standard value table for chassis 
        Testing and adjusting
        Troubleshooting 
    30 DISASSEMBLY AND ASSEMBLY
        How to read this manual 
        Removal and installation of assemblies 
        Disassembly and assembly of assemblies 
        Precautions when performing operation 
        Special tool list 
        Sketches of special tools 
        Removal, installation of fuel injection pump assembly
        Removal, installation of nozzle holder assembly
        Removal, installation of cylinder head assembly
        Removal, installation of engine assembly 
        Removal, installation of radiator assembly 
        Removal, installation of air aftercooler 
        Removal, installation of hydraulic oil cooler assembly
        Removal, installation of cooling fan and fan motor assembly 
        Removal, installation of fuel tank assembly 
        Removal, installation of transfer
        Disassembly, assembly of transfer assembly 
        Removal, installation of parking brake assembly 
        Disassembly, assembly of parking brake assembly 
        Removal, installation of front axle assembly
        Removal, installation of rear axle assembly 
        Disassembly, assembly of axle housing assembly 
        Disassembly, assembly of differential assembly 
        Removal, installation of HST pump and 4-gear pump assembly 
        Disassembly and assembly of HST pump assembly 
        Removal, installation of HST motor 1 assembly 
        Removal, installation of HST motor 2 assembly 
        Disassembly and assembly of HST motor assembly 
        Removal, installation of work equipment control valve assembly 
        Removal, installation of travel damper valve assembly
        Removal, installation of hydraulic tank assembly
        Removal, installation of work equipment assembly
        Disassembly, assembly of hydraulic cylinder assembly
        Removal, installation of operator's cab assembly
        Removal, installation of operator's cab glass (Stuck glass) 
        Coating materials 
        Removal, installation of center hinge pin 
        Removal, installation of counterweight
        Removal, installation of air conditioner unit assembly
        Removal, installation of air conditioner compressor assembly
        Removal, installation of monitor panel 
    90 OTHERS 
        Hydraulic circuit diagram  WA250-5 
        Hydraulic circuit diagram  WA250PT-5 
        Electrical circuit diagram 1/4 (1/4)  
        Electrical circuit diagram 1/4 (2/4)  
        Electrical circuit diagram 1/4 (3/4)  
        Electrical circuit diagram 1/4 (4/4)  
        Electrical circuit diagram 2/4 
        Electrical circuit diagram 3/4 
        Electrical circuit diagram 4/4 .
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