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KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN:WA320H20051 & UP) KOMATSU WA320 3 – PDF DOWNLOAD
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- KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL
- SERIAL NUMBER:WA320H20051 & UP
- PUBLICATION NUMBER:VEBM450104
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Description
KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN:WA320H20051 & UP) KOMATSU WA320 3
KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN:WA320H20051 & UP) KOMATSU WA320 3 – PDF DOWNLOAD:
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DESCRIPTION:
KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN:WA320H20051 & UP) KOMATSU WA320 3
- This shop manual has been prepared as an aid to improve the quality of repairs by giving the service personnel an accurate understanding of the product and by showing them the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
- This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following chapters; these chapters are further divided into the each main group of components.
- STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. - TESTING AND ADJUSTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included in this section. - DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations. - MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
TABLE OF CONTENTS:
KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN:WA320H20051 & UP) KOMATSU WA320 3
Contents.................................................................... 2 01 General.............................................................. 9 Dimensions and weights.............................................. 11 Specification....................................................... 12 Weight table........................................................ 15 General view of controls and gauges................................. 16 Dimensions and weights.............................................. 17 Specification....................................................... 18 List of lubricant and water......................................... 21 Ountlines of service................................................ 23 General view of controls and gauges................................. 26 Torque list......................................................... 28 10 Structure and function............................................... 29 Power train......................................................... 31 Power train system.................................................. 32 Toque converter, transmission piping................................ 34 Transmission hydrqulic system diagram............................... 35 Torque converter.................................................... 37 Torque cnverter oil filter.......................................... 39 Transmission........................................................ 41 Clutch.............................................................. 43 Transmission control valve.......................................... 53 Transmission solenoid valve......................................... 56 Pilot reducing valve................................................ 57 Main relief valve................................................... 58 Torque converter outlet port valve.................................. 59 Priority valve...................................................... 60 Quick return valve.................................................. 61 Directional selector valve.......................................... 65 H-L selector valve and range selector valve......................... 66 Emergency manual spool.............................................. 68 Modulation valve.................................................... 69 Pilot oil filter.................................................... 72 Accumulation valve.................................................. 73 Drive shaft......................................................... 75 Axle................................................................ 76 Differential........................................................ 78 Final drive......................................................... 83 Axle mount, center hinge pin........................................ 84 Steering piping..................................................... 87 Steering column, orbit roll......................................... 88 Priority valve...................................................... 89 Steering valve (orbit roll)......................................... 93 Cushion valve.......................................................101 2-way restrictor valve..............................................102 Emergency steering..................................................103 Brake piping........................................................113 Brake hydraulic circuit diagram.....................................114 Brake valve.........................................................115 Accumulation charge valve...........................................120 Accumulation (for brake)............................................124 Brake pressure regulation valve.....................................134 Accumutator for PPC valve...........................................136 Brake accumulator unit..............................................137 Brake...............................................................139 Parking brake control...............................................141 Parking brake.......................................................142 Parking brake valve.................................................143 Hydraulic piping....................................................145 Work equipment hydraulic circuit diagram............................146 Work equipment lever linkage........................................156 Hydraulic tank......................................................157 Oil filter bypass valve.............................................158 PPC valve...........................................................159 Operation of PPC relief valve.......................................164 Accumulator (for PPC valve).........................................168 Main control valve up to H20343.....................................169 Relief valve up to H20343...........................................173 Safety valve with suction up to H20343..............................174 Suction valve up to H20343 .........................................175 Main control valve from H20344 up to H20710.........................176 Safety valve with suction: H20344 and up............................178 Anticavitation valve: H20344 and up.................................179 Main control valve:H20711 and up....................................180 Operation of cut-off valve up to H20343.............................182 Work equipment valve operation......................................184 Hydraulic safety system up to H20710................................190 Work equipment linkage..............................................193 Bucket..............................................................195 Bucket positioner and boom kick-out.................................196 Machine monitor system..............................................203 Main monitor........................................................204 Maintenance monitor.................................................208 Transmission auto-shift control function............................210 Transmission controler..............................................215 E.C.S.S. (ALS-electronic)...........................................217 Sensors.............................................................227 Engine starting circuit.............................................232 Etherstart (option).................................................233 Engine start/stop/preheating circuit................................234 Ribbon heater: H20561 and up........................................236 Electric transmission control.......................................237 Kick-down/hold switch...............................................240 Kick-down electric circuit diagram (normal).........................241 Transmission cut-off switch.........................................246 Transmission cut-off function.......................................247 Electric parking brake control......................................251 Air-conditioner.....................................................253 Wiring diagrams.....................................................307 20 Testing and adjusting................................................355 Standard value table for engine.....................................356 Standard value table for chassis....................................358 Standard value table for electrical system..........................362 Test certificate WA320-3............................................373 Tools for testing and adjusting.....................................377 Measuring compression pressure......................................383 Measuring blow-by pressure..........................................385 Testing and adjusting fuel injection timing.........................387 Measuring exhaust color.............................................389 Measuring intake air pressure (boost pressure)......................390 Measuring engine oil pressure.......................................391 Testing the fan belt tension........................................392 Measuring acceerator pedal..........................................393 Basic adjustment of accelerator pedal...............................395 Measuring operating force, travel of speed lever....................397 Measuring stall speed...............................................398 Measuring torque converter, transmission, parking brake pressure....400 Method of operating emergency manuel spool..........................402 Measuring clearance between tire and wheel..........................404 Testing and adjusting steering wheel................................405 Measuring steering oil pressure.....................................407 Measuring operating force, travel of brake pedal....................409 Measuring brake performance.........................................410 Testing brake oil pressure..........................................411 Testing for brake disc wear.........................................412 Bleeding air from brake system......................................413 Measuring parking brake performance.................................414 Manual release note for parking brake...............................415 Testing wear of parking brake disc..................................416 Measuring work equipment control lever..............................417 Measuring work equipment hydraulic pressure.........................419 Measuring PPC valve pressure........................................421 Measuring work equipment............................................425 Testing and adjusting bucket positioner.............................427 Testing and adjusting boom kick-out.................................428 Adjusting main monitor (speedometer module).........................430 Gas side test and topping up gas pressure...........................431 Hydraulic accumulator...............................................433 30 Disassembly and assembly.............................................649 Method of using manual..............................................651 Precautions when carrying out operation.............................652 Special tool list...................................................654 Sketches of special tools...........................................656 SDtarting motor.....................................................658 Alternator..........................................................659 Engine oil cooler...................................................660 Fuel injection pump.................................................663 Water pump..........................................................669 Turbocharger........................................................670 Thermostat..........................................................674 Cylinder head.......................................................678 Radiator............................................................696 Engine..............................................................702 Torque converter charging pump......................................707 Torque converter, transmission......................................708 Torque converter....................................................724 Transmission........................................................728 Transmission clutch pack............................................752 Transmission control valve..........................................770 Transmission accumulator valve......................................779 Transmission modulating valve.......................................781 Drife shaft.........................................................783 Front axle..........................................................787 Rear axle...........................................................790 Differential........................................................795 Axle housing........................................................810 Center hinge pin....................................................825 Priority valve......................................................834 Steering valve......................................................836 Steering cylinder...................................................846 Right brake valve (tandem)..........................................848 Left brake valve (single)...........................................850 Parking brake disc..................................................852 Hydraulic tank......................................................855 Hydraulic filter....................................................857 Hydraulic, steerring pump...........................................858 Main control valve..................................................865 PPC valve...........................................................873 Bucket cylinder.....................................................877 Boom cylinder.......................................................879 Hydraulic cylinder..................................................881 Work equipment......................................................887 Counterweight.......................................................892 Fuel tank...........................................................893 Cab.................................................................896 Main monitor........................................................898 Maintenance monitor.................................................900 Air conditioner unit................................................901 Air conditrioner condenser..........................................907 Dry receiver........................................................909 Air conditioner compressor..........................................910 40 Maintenance standard.................................................913 Engine mount, transmission mount....................................914 Torque converter charging pump......................................915 Torque converter....................................................916 Transmission........................................................917 Transmission control valve..........................................926 Modulation valve assembly...........................................930 Accumulation valve..................................................931 Drive shaft.........................................................932 Differential........................................................933 Final drive.........................................................936 Axle mount..........................................................938 Center hinge pin....................................................940 Steering column.....................................................942 Priority valve......................................................943 Steering cylinder mount.............................................944 Brake...............................................................945 Brake valve.........................................................947 Parking brake.......................................................950 Hydraulic pump......................................................951 Main control valve..................................................952 PPC valve...........................................................956 Hydraulic cylinder.................................................957 Work equipment linkage..............................................958 Bucket..............................................................960 Bucket positioner and boom kick-out.................................961
PLEASE NOTE:
⦁ This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
⦁ This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
⦁ Require some other service manual or have any queries: please WRITE to us at [email protected]
