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KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN: A30001 & UP) – PDF DOWNLOAD
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- KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL
- SERIAL NUMBER: A30001 & UP
- PUBLICATION NUMBER:CEBMW19071
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Description
KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN: A30001 & UP)
KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN: A30001 & UP) – PDF DOWNLOAD:
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KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN: A30001 & UP)
- This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him 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 sections. These sections are further divided into each main group of components.
- GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts. - 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: A30001 & UP)
MAIN MENU...................................................................................................................................................... 0 CONTENTS....................................................................................................................................................... 2 01 GENERAL..................................................................................................................................................... 24 SPECIFICATION DRAWINGS..................................................................................................................................... 25 SPECIFICATIONS............................................................................................................................................. 26 WEIGHT TABLE............................................................................................................................................... 29 FUEL, COOLANT AND LUBRICANTS............................................................................................................................... 30 ENGINE OIL SPECIFICATIONS.................................................................................................................................. 31 DIESEL FUEL SPECIFICATIONS................................................................................................................................. 32 COOLANT SPECIFICATIONS..................................................................................................................................... 33 10 STRUCTURE AND FUNCTION...................................................................................................................................... 38 POWER TRAIN................................................................................................................................................ 39 POWER TRAIN SYSTEM......................................................................................................................................... 40 TORQUE CONVERTER, TRANSMISSION PIPING...................................................................................................................... 42 TRANSMISSION HYDRAULIC SYSTEM DIAGRAM...................................................................................................................... 43 TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM..................................................................................................................... 44 TORQUE CONVERTER........................................................................................................................................... 45 TORQUE CONVERTER OIL FILTER................................................................................................................................ 47 TRANSMISSION............................................................................................................................................... 48 TRANSMISSION CONTROL VALVE................................................................................................................................. 59 DRIVE SHAFT................................................................................................................................................ 81 AXLE....................................................................................................................................................... 82 DIFFERENTIAL............................................................................................................................................... 84 FINAL DRIVE................................................................................................................................................ 88 AXLE MOUNT, CENTER HINGE PIN............................................................................................................................... 89 STEERING PIPING............................................................................................................................................ 91 STEERING COLUMN............................................................................................................................................ 92 PRIORITY VALVE............................................................................................................................................. 93 STEERING VALVE (ORBIT-ROLL)................................................................................................................................ 98 CUSHION VALVE..............................................................................................................................................106 2-WAY RESTRICTOR VALVE.....................................................................................................................................107 BRAKE PIPING...............................................................................................................................................108 BRAKE HYDRAULIC CIRCUIT DIAGRAM............................................................................................................................109 BRAKE VALVE................................................................................................................................................110 ACCUMULATOR CHARGE VALVE...................................................................................................................................115 ACCUMULATOR (FOR BRAKE)....................................................................................................................................119 BRAKE......................................................................................................................................................121 PARKING BRAKE CONTROL......................................................................................................................................124 PARKING BRAKE..............................................................................................................................................125 PARKING BRAKE SOLENOID VALVE...............................................................................................................................126 PARKING BRAKE VALVE........................................................................................................................................127 PARKING BRAKE EMERGENCY RELEASE SOLENOID VALVE.............................................................................................................128 HYDRAULIC PIPING...........................................................................................................................................129 WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM....................................................................................................................131 WORK EQUIPEMENT HYDRAULIC CIRCUIT DIAGRAM..................................................................................................................132 WORK EQUIPMENT LEVER LINKAGE...............................................................................................................................134 HYDRAULIC TANK.............................................................................................................................................135 PPC VALVE..................................................................................................................................................137 PPC RELIEF VALVE...........................................................................................................................................142 ACCUMULATOR (FOR PPC VALVE)................................................................................................................................143 MAIN CONTROL VALVE.........................................................................................................................................144 WORK EQUIPMENT LINKAGE.....................................................................................................................................159 BUCKET.....................................................................................................................................................161 BUCKET POSITIONER AND BOOM KICK-OUT........................................................................................................................162 CAB........................................................................................................................................................168 AIR CONDITIONER............................................................................................................................................169 ELECTRIC CIRCUIT DIAGRAM...................................................................................................................................170 MACHINE MONITOR SYSTEM.....................................................................................................................................175 MAIN MONITOR...............................................................................................................................................176 MAINTENANCE MONITOR........................................................................................................................................180 E.C.S.S. (ELECTRONICALLY CONTROL SUSPENSION SYSTEM)........................................................................................................182 SENSORS....................................................................................................................................................186 ENGINE STARTING CIRCUIT....................................................................................................................................190 ENGINE STOP CIRCUIT........................................................................................................................................191 ETHER START CIRCUIT........................................................................................................................................192 ELECTRIC TRANSMISSION CONTROL..............................................................................................................................193 KICK-DOWN SWITCH...........................................................................................................................................196 KICK-DOWN ELECTRIC CIRCUIT DIAGRAM.........................................................................................................................197 TRANSMISSION CUT-OFF SWITCH................................................................................................................................202 TRANSMISSION CUT-OFF FUNCTION..............................................................................................................................203 ELECTRIC PARKING BRAKE CONTROL.............................................................................................................................205 20 STRUCTURE AND FUNCTION......................................................................................................................................217 STANDARD VALUE TABLE FOR ENGINE............................................................................................................................218 STANDARD VALUE TABLE FOR CHASSIS...........................................................................................................................219 STANDARD VALUE TABLE FOR ELECTRICAL SYSTEM.................................................................................................................223 SERVICE TOOLS FOR TESTING, ADJUSTING & TROUBLESHOOTING.....................................................................................................227 MEASURING ENGINE SPEEDS....................................................................................................................................228 MEASURING INTAKE MANIFOLD PRESSURE.........................................................................................................................228 MEASURING INTAKE AIR RESTRICTION...........................................................................................................................228 MEASURING ENGINE LUBRICATING OIL PRESSURE..................................................................................................................229 MEASURING FUEL FILTER INLET RESTRICTION....................................................................................................................229 MEASURING BLOW-BY PRESSURE.................................................................................................................................229 MEASURING EXHAUST BACK PRESSURE............................................................................................................................230 MEASURING EXHAUST GAS COLOR................................................................................................................................231 MEASURING COOLANT TEMPERATURE..............................................................................................................................232 MEASURING AND ADJUSTING VALVE CLEARANCE....................................................................................................................232 MEASURING WASTEGATE ACTUATOR...............................................................................................................................232 MEASURING STALL SPEEDS.....................................................................................................................................233 MEASURING ACCELERATOR PEDAL................................................................................................................................235 MEASURING OPERATING FORCE & TRAVEL OF DIRECTIONAL & SPEED LEVERS...........................................................................................237 MEASURING TORQUE CONVERTER, TRANSMISSION, PARKING BRAKE OIL PRESSURE.......................................................................................238 METHOD OF OPERATING EMERGENCY MANUAL SPOOL.................................................................................................................240 MEASURING CLEARANCE BETWEEN TIRE AND WHEEL.................................................................................................................242 TESTING AND ADJUSTING STEERING WHEEL.......................................................................................................................243 MEASURING STEERING OIL PRESSURE............................................................................................................................245 MEASURING OPERATING FORCE, TRAVEL OF BRAKE PEDAL...........................................................................................................247 MEASURING BRAKE PERFORMANCE................................................................................................................................248 TESTING BRAKE OIL PRESSURE.................................................................................................................................249 TESTING FOR BRAKE DISC WEAR................................................................................................................................250 BLEEDING AIR FROM BRAKE SYSTEM.............................................................................................................................251 MEASURING PARKING BRAKE PERFORMANCE........................................................................................................................252 MANUAL RELEASE METHOD FOR PARKING BRAKE....................................................................................................................253 TESTING WEAR OF PARKING BRAKE DISC.........................................................................................................................254 MEASURING WORK EQUIPMENT CONTROL LEVER.....................................................................................................................255 MEASURING WORK EQUIPMENT HYDRAULIC PRESURE.................................................................................................................257 MEASURING PPC VALVE PRESSURE...............................................................................................................................259 MEASURING WORK EQUIPMENT...................................................................................................................................261 TESTING AND ADJUSTING BUCKET POSITIONER....................................................................................................................263 TESTING AND ADJUSTING BOOM KICK-OUT........................................................................................................................264 ADJUSTING MAIN MONITOR (SPEEDOMETER MODULE)................................................................................................................266 TROUBLESHOOTING............................................................................................................................................267 POINTS TO REMEMBER WHEN TROUBLESHOOTING................................................................................................................268 SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................................................................269 PRECAUTIONS WHEN CARRYING OUT MAINTENANCE..............................................................................................................270 HANDLING CONNECTORS....................................................................................................................................277 CHECKS BEFORE TROUBLESHOOTING..........................................................................................................................278 METHOD OF USING TROUBLESHOOTING CHARTS.................................................................................................................279 TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)..............................................................................................................287 S-1 Starting performance is poor (Staring always takes time).......................................................................................288 S-2 Engine does not start..........................................................................................................................289 (1) Engine does not turn.......................................................................................................................289 (2) Engine turns but no exhaust gas comes out (Fuel is not being injected).....................................................................290 (3) Exhaust gas comes out but engine does not start (Fuel is being injected)...................................................................291 S-3 Engine does not pick up smoothly (Follow-up is poor)...........................................................................................292 S-4 Engine stops during operations.................................................................................................................293 S-5 Engine does not rotate smoothly (hunting)......................................................................................................294 S-6 Engine lacks output (no power).................................................................................................................295 S-7 Exhaust gas is black (incomplete combustion)...................................................................................................296 S-8 Oil consumption is excessive (or exhaust gas is blue)..........................................................................................297 S-9 Oil becomes contaminated quickly...............................................................................................................298 S-I0 Fuel consumption is excessive.................................................................................................................299 S-11 Oil is in cooling water, or water spurts back, or water level goes down.......................................................................300 S-12 Oil pressure lamp lights up (drop in oil pressure)............................................................................................301 S-13 Oil level rises...............................................................................................................................302 S-14 Water temperature becomes too high (overheating)..............................................................................................303 S-15 Abnormal noise is made........................................................................................................................304 S-16 Vibration is excessive........................................................................................................................305 TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE)........................................................................................................306 TROUBLE DATA DISPLAY...............................................................................................................................308 M-1 Main monitor does not work.....................................................................................................................310 M-2 When starting switch is turned ON and engine is started immediately, all lamps stay lighted up.................................................311 M-3 Speedometer display does not work properly.....................................................................................................312 M-4 Abnormality in shift indicator.................................................................................................................313 (a) Stays at N even when directional lever is at F.............................................................................................313 (b) Stays at N even when directional lever is at R.............................................................................................313 (c) Does not display N even when directional lever is at N and displays R when directional lever is at F.......................................313 (d) Does not display N even when directional lever is at N and displays F when directional lever is at R.......................................314 (e) Does not display 1st, 4th..................................................................................................................314 (f) Does not display 3rd, 4th..................................................................................................................314 (g) Does not display 2nd, 3rd..................................................................................................................315 (h) Does not display 1st, 2nd..................................................................................................................315 M-5 High beam does not light up....................................................................................................................316 M-6 Turn signal display does not light up..........................................................................................................317 (a) L.H. turn signal does not light up.........................................................................................................317 (b) R.H. turn signal does not light up.........................................................................................................317 M-7 Abnormality in parking display.................................................................................................................318 (a) Parking lamp does not light up.............................................................................................................318 (b) Parking lamp stays lighted up..............................................................................................................318 M-8 NOT USED....................................................................................................................................... 0 M-9 Night lighting does not light up...............................................................................................................319 M-10 Abnormality in front working lamp.............................................................................................................320 (a) Neither monitor display nor front working lamp light up....................................................................................320 (b) Working lamp lights up but monitor display does not light up...............................................................................320 (c)Monitor lights up but working lamp does not light up........................................................................................320 M-11 Abnormality in rear working lamp..............................................................................................................321 (a) Neither monitor display nor rear working lamp light up.....................................................................................321 (b) Working lamp lights up but monitor display does not light up...............................................................................321 (c) Monitor lights up but working lamp does not light up.......................................................................................321 M-12 Abnormality in transmission cut-off...........................................................................................................323 (a) When monitor switch is pressed, cut-off function is not switched and display is not given..................................................323 (b) Monitor display goes out but cut-off function stays on.....................................................................................323 (c) Monitor display lights up but cut-off function is not actuated.............................................................................324 M-13 Abnormality in parking brake dragging warning.................................................................................................325 (a) When parking brake is applied, buzzer sounds (intermittenly) even when directional lever is at N, and caution lamp flashes.................325 (b) When parking brake is applied, buzzer does not sound and caution lamp does not light up even when directional lever is at po...............325 M-14 When parking brake dragging warning is given, buzzer and caution lamp are actuated continuously, or they are not adjusted.....................326 (a) Actuated continuously......................................................................................................................326 (b) Not actuated...............................................................................................................................326 M-15 Abnormality in buzzer.........................................................................................................................327 (a) Buzzer does not sound when starting switch is turned ON (during self-check)................................................................327 (b) Buzzer always sounds.......................................................................................................................327 M-16 Condition of monitor switches is not stored in memory.........................................................................................328 M-17 Abnormality in failure display mode...........................................................................................................329 (a) Does not enter failure display mode........................................................................................................329 (b) Time for time elapsed since failure on failure display mode does not advance...............................................................329 M-18 Abnormality in emergency steering normal display..............................................................................................330 (a) Emergency steering normal display does not light up........................................................................................330 (b) Emergency steering normal display stays lighted up.........................................................................................330 M-19 Abnormality in emergency steering actuation display...........................................................................................331 (a) Emergency steering actuation display does not light up.....................................................................................331 (b) Emergency steering actuation display stays lighted up......................................................................................331 M-20 Abnormality in auto-greasing system...........................................................................................................332 (a) Forced greasing cannot be carried out......................................................................................................332 (b) Monitor display flashes rapidly (2 times/sec)..............................................................................................332 (c) When no more grease remains, monitor display flashes rapidly (2 times/sec).................................................................332 (d) Monitor display flashes slowly (1 time/sec)................................................................................................333 (e) Monitor display goes out...................................................................................................................333 M-21 Abnormality in ECSS system....................................................................................................................334 (a) Display does not change when switch is pressed.............................................................................................334 (b) Monitor display lights up but ECSS function does not work..................................................................................334 M-22 Buzzer does not sound when auto-leveling switch is actuated...................................................................................334 M-23 Failure code is not sent to main monitor (abnormality in network).............................................................................335 TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM (K MODE).................................................................................................336 K-1 When starting switch is turned ON, all lamps on maintenance monitor do not light up for 3 sec., does not work .................................337 (a) All lamps on maintenance monitor do not light up for 3 seconds.............................................................................337 (b) Some lamps do not light up.................................................................................................................338 K-2 When starting switch is turned ON, all lamps on maintenance monitor light up but do not go out ...............................................338 K-3 When engine is started immediately after starting switch is turned ON (within 3 seconds), all lamps on maintenance monitor do not go out ....339 K-4 When starting switch is turned ON (engine stopped), CHECK items................................................................................340 (a) Engine oil level display flashes...........................................................................................................340 (b) Engine water level display flashes.........................................................................................................341 K-5 When starting switch is turned ON (engine started), CAUTION items flash ......................................................................342 (a) Engine oil pressure display flashes........................................................................................................342 (b) Battery charge level display flashes.......................................................................................................343 (c) Brake oil pressure display flashes.........................................................................................................344 (d) Air cleaner display flashes................................................................................................................345 K-6 CAUTION items are flashing but alarm buzzer does not sound.....................................................................................346 K-7 There is no abnormality in monitor display but alarm buzzer sounds ...........................................................................347 K-8 CAUTION items are flashing but warning lamp (CHECK lamp, CAUTION lamp) does not light up .....................................................348 (a) CHECK lamp.................................................................................................................................348 (b) CAUTION lamp...............................................................................................................................348 K-9 There is no abnormality in maintenance monitor display but warning lamp (CHECK lamp, CAUTION lamp) lights up .................................349 (a) CHECK lamp.................................................................................................................................349 (b) CAUTION lamp...............................................................................................................................349 K-10 Night lighting does not light up when lamp switch is turned ON (only lighting of maintenance monitor does not light up) .....................350 K-11 Night lighting does not light up even when lamp switch is OFF, night lighting stays lighted up ...............................................351 K-12 Service meter does not work ..................................................................................................................352 K-13 Service meter is running even when engine is stopped .........................................................................................352 K-14 Abnormality in gauge items ...................................................................................................................353 (a) Abnormality in torque converter oil temperature gauge......................................................................................353 (b) Abnormality in engine water temperature gauge..............................................................................................354 (c) Abnormality in torque converter oil temperature gauge......................................................................................355 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE) .........................................................................................................356 E-1 Engine does not start .........................................................................................................................357 (a) Starting motor does not turn...............................................................................................................357 (b) Starting motor turns.......................................................................................................................361 E-2 Engine does not stop .........................................................................................................................363 E-3 Engine stops when machine is traveling.........................................................................................................363 E-4 Parking brake does not work ...................................................................................................................364 (a) Parking brake has no effect when parking brake switch is turned ON (parking)...............................................................364 (b) Parking brake has no effect when brake pressure drops (Does not work as emergency brake)...................................................364 E-5 Parking brake is applied when machine is traveling ............................................................................................365 E-6 Parking brake is released when starting switch is turned ON ...................................................................................367 E-7 Transmission does not change to neutral when parking brake is applied (but parking brake works normally) ....................................367 E-8 Transmission does not work normally ...........................................................................................................368 (a) Problem in common circuit for transmission (always stays in 2nd)...........................................................................370 (b) Problem in H-L circuit.....................................................................................................................370 (c) Problem in speed circuit...................................................................................................................371 (d) Problem in 4th circuit (does not enter 4th)................................................................................................371 (e) Contact in H-L circuit.....................................................................................................................372 (f) Contact in speed circuit...................................................................................................................374 (g) Contact in 4th circuit (always stays in 4th)...............................................................................................376 (h) Problem in FORWARD circuit (REVERSE is normal).............................................................................................377 (i) Problem in REVERSE circuit (FORWARD is normal).............................................................................................379 (j) Problem in common circuit for FORWARD and REVERSE (does not travel forward, parking brake is normal).......................................381 (k) Contact in FORWARD circuit.................................................................................................................383 (I) Contact in REVERSE circuit.................................................................................................................385 (m) Problem in common circuit for FORWARD and REVERSE..........................................................................................387 E-9 Kick-down switch does not work (the regular Fl to F4 shifts normally).........................................................................388 E-10 Kick-down works only when kick-down switch is ON (Kick-down switch relay does not hold in position (self-holding feature).....................390 E-11 Kick-down operation cannot be canceled .......................................................................................................390 (a) Not canceled even when directional lever is moved from F to N or R.........................................................................390 (b) Not canceled even when speed lever is moved from 2nd to other position (becomes 4th).......................................................391 E-12 Kick-down switch is actuated by mistake when traveling in 2nd ................................................................................393 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (CHASSIS RELATED) (T MODE) .........................................................................394 POWER TRAIN........................................................................................................................................395 T-1 Machine does not start ....................................................................................................................395 T-2 Travel speed is slow, thrusting power is weak, lacks power on slopes .....................................................................397 T-3 Excessive shock when starting machine or shifting gear ....................................................................................399 T-4 Excessive time lag when starting machine or shifting gear .................................................................................400 T-5 Torque converter oil temperature is high ..................................................................................................401 STEERING SYSTEM....................................................................................................................................402 T-6 Steering does not turn ....................................................................................................................402 T-7 Steering wheel is heavy ...................................................................................................................403 T-8 Steering wheel wobbles or there is excessive shock .......................................................................................404 T-9 Machine steers to one side when traveling ................................................................................................404 T-10 Turning radius to left and right is different ...........................................................................................404 BRAKE SYSTEM.......................................................................................................................................405 T-11 Brakes do not work or braking effect is poor .............................................................................................405 T-12 Brakes are not released or brakes drag ...................................................................................................406 T-13 Parking brake is not released or brake drags .............................................................................................407 WORK EQUIPMENT.....................................................................................................................................408 T-14 Boom does not rise .......................................................................................................................408 T-15 Boom movement is slow or boom lacks lifting power ........................................................................................409 T-16 When boom is raised, it moves slowly at a certain height .................................................................................410 T-17 Bucket cannot be pushed with boom cylinder (bucket floats) ...............................................................................410 T-18 Excessive hydraulic drift of boom ........................................................................................................410 T-19 Boom shakes during operation .............................................................................................................410 T-20 Boom drops momentarily when control lever is operated from HOLD to RAISE ................................................................411 T-21 Bucket does not tilt back ................................................................................................................412 T-22 Bucket movement is slow or tilt-back lacks power .........................................................................................413 T-23 Bucket movement during tilt-back operation ...............................................................................................414 T-24 Bucket cannot be pushed with bucket cylinder .............................................................................................414 T-25 Excessive hydraulic drift of bucket ......................................................................................................414 T-26 Bucket shakes during loading operation (Main control valve at HOLD) .....................................................................415 T-27 Bucket dumps momentarily when control lever is operated from HOLD to TILT ...............................................................415 T-28 Boom, bucket control levers are heavy or do not move smoothly ............................................................................416 TROUBLESHOOTING OF ECSS (ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM) (D MODE) ........................................................................417 JUDGEMENT TABLE FOR CONTROLLER ELECTRICAL SYSTEM...................................................................................................418 D-1 ECSS does not work ............................................................................................................................419 (a) Error code [d0] is displayed...............................................................................................................420 (b) Error code [d1] is displayed...............................................................................................................420 (c) Error code [d2] is displayed...............................................................................................................421 (d) Error code [d3] is displayed...............................................................................................................421 (e) Error code [d4] is displayed...............................................................................................................422 (f) No abnormality display is given............................................................................................................422 D-2 ECSS cannot be canceled .......................................................................................................................426 D-3 Output is turned ON (travel speed does not become 5 km/h) (deviates around 5 km/h) ............................................................427 D-4 Output is turned ON when transmission is in 1st ...............................................................................................427 D-5 Output is turned ON when transmission is in 4th ...............................................................................................428 D-6 Controller LED code is not displayed ..........................................................................................................429 D-7 ECSS is abnormal but main monitor does not give abnormality display ..........................................................................429 TROUBLESHOOTING - EAGLE AIR CONDITIONER................................................................................................................430 30 DISASSEMBLY AND ASSEMBLY....................................................................................................................................434 METHOD OF USING MANUAL ....................................................................................................................................436 PRECAUTIONS WHEN CARRYING OUT OPERATION ...................................................................................................................437 SPECIAL TOOL LIST .........................................................................................................................................439 SKETCHES OF SPECIAL TOOLS .................................................................................................................................441 TORQUE CONVERTER CHARGING PUMP ............................................................................................................................442 TORQUE CONVERTER...........................................................................................................................................442 DISASSEMBLY............................................................................................................................................443 ASSEMBLY...............................................................................................................................................445 TRANSMISSION...............................................................................................................................................447 DISASSEMBLY............................................................................................................................................447 ASSEMBLY...............................................................................................................................................457 TRANSMISSION CLUTCH PACK...................................................................................................................................471 DISASSEMBLY ...........................................................................................................................................471 ASSEMBLY ..............................................................................................................................................477 TRANSMISSION CONTROL VALVE.................................................................................................................................489 REMOVAL................................................................................................................................................489 INSTALLATION ..........................................................................................................................................491 DISASSEMBLY ...........................................................................................................................................492 ASSEMBLY...............................................................................................................................................494 TRANSMISSION ACCUMULATOR VALVE.............................................................................................................................497 DISASSEMBLY............................................................................................................................................497 ASSEMBLY ..............................................................................................................................................498 TRANSMISSION MODULATING VALVE..............................................................................................................................499 DISASSEMBLY ...........................................................................................................................................499 ASSEMBLY ..............................................................................................................................................500 DRIVE SHAFT................................................................................................................................................501 DISASSEMBLY ...........................................................................................................................................501 ASSEMBLY ..............................................................................................................................................503 FRONT AXLE.................................................................................................................................................505 REMOVAL ...............................................................................................................................................505 INSTALLATION ..........................................................................................................................................507 REAR AXLE..................................................................................................................................................508 REMOVAL................................................................................................................................................508 INSTALLATION...........................................................................................................................................512 DIFFERENTIAL...............................................................................................................................................513 DISASSEMBLY ...........................................................................................................................................513 ASSEMBLY...............................................................................................................................................518 AXLE HOUSING...............................................................................................................................................528 DISASSEMBLY ...........................................................................................................................................528 ASSEMBLY ..............................................................................................................................................534 CENTER HINGE PIN...........................................................................................................................................543 REMOVAL ...............................................................................................................................................543 INSTALLATION ..........................................................................................................................................548 PRIORITY VALVE.............................................................................................................................................552 REMOVAL................................................................................................................................................552 INSTALLATION ..........................................................................................................................................553 STEERING VALVE.............................................................................................................................................554 REMOVAL................................................................................................................................................554 INSTALLATION ..........................................................................................................................................555 DISASSEMBLY ...........................................................................................................................................556 ASSEMBLY ..............................................................................................................................................559 STEERING CYLINDER..........................................................................................................................................564 REMOVAL ...............................................................................................................................................564 INSTALLATION ..........................................................................................................................................565 RIGHT BRAKE VALVE (TANDEM).................................................................................................................................566 DISASSEMBLY ...........................................................................................................................................566 ASSEMBLY...............................................................................................................................................567 LEFT BRAKE VALVE (SINGLE)..................................................................................................................................568 DISASSEMBLY ...........................................................................................................................................568 ASSEMBLY ..............................................................................................................................................569 PARKING BRAKE DISC.........................................................................................................................................570 REMOVAL................................................................................................................................................570 INSTALLATION ..........................................................................................................................................572 HYDRAULIC TANK.............................................................................................................................................573 REMOVAL ...............................................................................................................................................573 INSTALLATION...........................................................................................................................................574 HYDRAULIC FILTER...........................................................................................................................................575 HYDRAULIC STEERING PUMP....................................................................................................................................576 REMOVAL................................................................................................................................................576 INSTALLATION...........................................................................................................................................582 MAIN CONTROL VALVE.........................................................................................................................................583 REMOVAL ...............................................................................................................................................583 INSTALLATION ..........................................................................................................................................584 DISASSEMBLY............................................................................................................................................585 ASSEMBLY ..............................................................................................................................................587 3-SPOOL CONTROL VALVE......................................................................................................................................590 DISASSEMBLY............................................................................................................................................590 ASSEMBLY ..............................................................................................................................................592 PPC VALVE..................................................................................................................................................595 REMOVAL................................................................................................................................................595 INSTALLATION ..........................................................................................................................................596 DISASSEMBLY ...........................................................................................................................................597 ASSEMBLY ..............................................................................................................................................598 BUCKET CYLINDER............................................................................................................................................599 REMOVAL ...............................................................................................................................................599 INSTALLATION ..........................................................................................................................................600 BOOM CYLINDER..............................................................................................................................................601 REMOVAL ...............................................................................................................................................601 INSTALLATION ..........................................................................................................................................602 HYDRAULIC CYLINDER.........................................................................................................................................603 DISASSEMBLY ...........................................................................................................................................603 ASSEMBLY ..............................................................................................................................................606 WORK EQUIPMENT.............................................................................................................................................609 REMOVAL ...............................................................................................................................................609 INSTALLATION...........................................................................................................................................612 COUNTERWEIGHT..............................................................................................................................................614 REMOVAL AND INSTALLATION...............................................................................................................................614 CAB........................................................................................................................................................615 REMOVAL ...............................................................................................................................................615 INSTALLATION ..........................................................................................................................................617 MAIN MONITOR...............................................................................................................................................619 REMOVAL ...............................................................................................................................................619 INSTALLATION ..........................................................................................................................................620 MAINTENANCE MONITOR........................................................................................................................................621 REMOVAL AND INSTALLATION...............................................................................................................................621 40 MAINTENANCE STANDARD........................................................................................................................................622 ENGINE MOUNT, TRANSMISSION MOUNT ..........................................................................................................................623 TORQUE CONVERTER CHARGING PUMP ............................................................................................................................624 TORQUE CONVERTER ..........................................................................................................................................625 TRANSMISSION ..............................................................................................................................................626 TRANSMISSION CONTROL VALVE ................................................................................................................................635 MODULATION VALVE ASSEMBLY .................................................................................................................................639 ACCUMULATOR VALVE .........................................................................................................................................640 DRIVE SHAFT ...............................................................................................................................................641 DIFFERENTIAL ..............................................................................................................................................642 FINAL DRIVE ...............................................................................................................................................645 AXLE MOUNT ................................................................................................................................................647 CENTER HINGE PIN ..........................................................................................................................................648 STEERING COLUMN ...........................................................................................................................................650 PRIORITY VALVE ............................................................................................................................................651 STEERING CYLINDER MOUNT ...................................................................................................................................652 BRAKE......................................................................................................................................................653 BRAKE VALVE ...............................................................................................................................................654 PARKING BRAKE..............................................................................................................................................657 HYDRAULIC PUMP ............................................................................................................................................658 MAIN CONTROL VALVE ........................................................................................................................................659 PPC VALVE..................................................................................................................................................663 HYDRAULIC CYLINDER ........................................................................................................................................664 WORK EQUIPMENT LINKAGE ....................................................................................................................................665 BUCKET ....................................................................................................................................................667 BUCKET POSITIONER AND BOOM KICK-OUT .......................................................................................................................668
PLEASE NOTE:
⦁ This is the SAME exact manual used by your dealers to fix your vehicle.
⦁ The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
⦁ Any queries / doubts regarding your purchase, please feel free to contact [email protected]
1 review for KOMATSU WA320-3 WHEEL LOADER SERVICE REPAIR MANUAL (SN: A30001 & UP) – PDF DOWNLOAD
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Drew Rogelio –
Good job