Trusted Business
Verified & Licensed
Virus Free Files
100% Safe Downloads
Secure Payment
SSL Protected
Instant Delivery
Available Immediately
Sale!
Komatsu WA450-3 Wheel Loader Shop Manual 53001 and up – PDF DOWNLOAD
Original price was: $54.95.$33.95Current price is: $33.95.
Komatsu WA450-3 Wheel Loader Shop Manual
SERIAL NUMBERS WA450-3 53001 andup
Instant PDF Download
Available immediately
Save to Your Device
Download & keep forever
Antivirus Scanned
100% virus-free
Trusted Worldwide
175,000+ customers
Description
Komatsu WA450-3 Wheel Loader Shop Manual
FILE DETAILS:
Komatsu WA450-3 Wheel Loader Shop Manual
Brands: Komatsu
Equipment Type: Wheel Loader
Manuals Type: Shop Manual
Machine Model: WA450-3
Serial Number: 53001 and up
Book Code: SEBM015501
Language: English
Pages: 769
File Format: Portable Document Format (PDF)
KOMATSU WA450-3 WHEEL LOADER SHOP MANUAL 53001 AND UP – PDF DOWNLOAD:
DESCRIPTION:
Komatsu WA450-3 Wheel Loader Shop Manual
FOREWORD:
GENERAL:
- 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 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 WA450-3 Wheel Loader Shop Manual
MAIN MENU........................................................................................................................................... 0 CONTENTS............................................................................................................................................ 2 01 GENERAL.......................................................................................................................................... 25 GENERAL ASSEMBLY DRAWING........................................................................................................................ 26 SPECIFICATIONS ................................................................................................................................. 27 WEIGHT TABLE ................................................................................................................................... 30 LIST OF LUBRICANT AND WATER .................................................................................................................... 32 10 STRUCTURE AND FUNCTION........................................................................................................................... 34 POWER TRAIN .................................................................................................................................... 35 POWER TRAIN SYSTEM ............................................................................................................................. 36 TORQUE CONVERTER, TRANSMISSION PIPING .......................................................................................................... 38 TRANSMISSION HYDRAULIC SYSTEM DIAGRAM .......................................................................................................... 39 TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM ......................................................................................................... 40 TORQUE CONVERTER ............................................................................................................................... 41 TORQUE CONVERTER OIL FILTER .................................................................................................................... 44 TRANSMISSION ................................................................................................................................... 45 TRANSMISSION CONTROL VALVE ..................................................................................................................... 56 PROPORTIONAL SOLENOID VALVE .................................................................................................................... 71 ELECTRONIC CONTROL MODULATION VALVE ............................................................................................................ 72 PILOT OIL FILTER ............................................................................................................................... 75 DRIVE SHAFT .................................................................................................................................... 76 AXLE ........................................................................................................................................... 77 DIFFERENTIAL ................................................................................................................................... 79 FINAL DRIVE..................................................................................................................................... 83 AXLE MOUNT, CENTER HINGE PIN ................................................................................................................... 84 STEERING PIPING ................................................................................................................................ 85 STEERING COLUMN ................................................................................................................................ 86 STEERING VALVE ................................................................................................................................. 87 ORBIT-ROLL VALVE ...............................................................................................................................101 STOP VALVE .....................................................................................................................................105 EMERGENCY STEERING PUMP ........................................................................................................................106 DIVERTER VALVE .................................................................................................................................107 BRAKE PIPING ...................................................................................................................................110 BRAKE CIRCUIT DIAGRAM ..........................................................................................................................112 BRAKE VALVE.....................................................................................................................................114 CHARGE VALVE ...................................................................................................................................119 ACCUMULATOR (FOR BRAKE) ........................................................................................................................123 SLACK ADJUSTER .................................................................................................................................124 BRAKE...........................................................................................................................................127 PARKING BRAKE CONTROL ..........................................................................................................................129 PARKING BRAKE ..................................................................................................................................130 PARKING BRAKE SOLENOID VALVE ...................................................................................................................131 PARKING BRAKE VALVE ............................................................................................................................132 PARKING BRAKE EMERGENCY RELEASE SOLENOID VALVE .................................................................................................133 HYDRAULIC PIPING ...............................................................................................................................134 WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM ........................................................................................................136 WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM .......................................................................................................137 WORK EQUIPMENT LEVER LINKAGE ...................................................................................................................139 HYDRAULIC TANK .................................................................................................................................140 PPC VALVE.......................................................................................................................................142 PPC RELIEF VALVE ...............................................................................................................................147 ACCUMULATOR (FOR PPC VALVE) ....................................................................................................................148 CUT-OFF VALVE ..................................................................................................................................149 MAIN CONTROL VALVE .............................................................................................................................152 WORK EQUIPMENT LINKAGE .........................................................................................................................166 BUCKET .........................................................................................................................................168 BUCKET POSITIONER AND BOOM KICK-OUT ............................................................................................................169 ROPS CAB .......................................................................................................................................175 HEATER AND DEFROSTER ...........................................................................................................................176 AIR CONDITIONER (OPTION) .......................................................................................................................177 ELECTRIC CIRCUIT DIAGRAM........................................................................................................................178 MACHINE MONITOR SYSTEM .........................................................................................................................183 MAIN MONITOR ...................................................................................................................................184 MAINTENANCE MONITOR ............................................................................................................................189 TRANSMISSION AUTO-SHIFT CONTROL SYSTEM .........................................................................................................191 SENSORS ........................................................................................................................................197 ENGINE STARTING CIRCUIT ........................................................................................................................202 ENGINE STOP CIRCUIT ............................................................................................................................203 PREHEATING CIRCUIT .............................................................................................................................204 ELECTRIC TRANSMISSION CONTROL ..................................................................................................................205 KICK-DOWN, HOLD SWITCH .........................................................................................................................208 KICK-DOWN ELECTRIC CIRCUIT DIAGRAM .............................................................................................................209 TRANSMISSION CUT-OFF SWITCH ....................................................................................................................213 TRANSMISSION CUT-OFF FUNCTION ..................................................................................................................214 ELECTRIC PARKING BRAKE CONTROL .................................................................................................................216 20 TESTING AND ADJUSTING............................................................................................................................228 STANDARD VALUE TABLE............................................................................................................................229 STANDARD VALUE TABLE FOR ENGINE RELATED PARTS...............................................................................................229 STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS..............................................................................................230 STANDARD VALUE TABLE FOR ELECTRICAL PARTS ..................................................................................................233 TESTING AND ADJUSTING...........................................................................................................................236 TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING...........................................................................................237 MEASURING ENGINE SPEED......................................................................................................................238 MEASURING INTAKE AIR PRESSURE...............................................................................................................239 ADJUSTING VALVE CLEARANCE...................................................................................................................240 MEASURING EXHAUST GAS COLOR.................................................................................................................241 MEASURING EXHAUST GAS TEMPERATURE...........................................................................................................242 MEASURING BLOW-BY PRESSURE..................................................................................................................243 MEASURING COMPRESSION PRESSURE..............................................................................................................244 MEASURING ENGINE OIL PRESSURE...............................................................................................................245 TESTING AND ADJUSTING FUEL INJECTION TIMING.................................................................................................246 ADJUSTING ENGINE STOP MOTOR CABLE...........................................................................................................249 TESTING AND ADJUSTING FAN BELT TENSION......................................................................................................251 TESTING ACCELERATOR PEDAL...................................................................................................................252 TESTING SPEED CONTROL LEVER.................................................................................................................254 MEASURING STALL SPEED.......................................................................................................................255 MEASURING TORQUE CONVERTER, TRANSMISSION, AND PARKING BRAKE OIL PRESSURE....................................................................257 METHOD OF OPERATING EMERGENCY MANUAL SPOOL..................................................................................................259 TESTING AND ADJUSTING STEERING WHEEL.......................................................................................................261 TESTING AND ADJUSTING STEERING CONTROL......................................................................................................264 TESTING AND ADJUSTING STEERING OIL PRESSURE.................................................................................................265 TESTING BRAKE PEDAL.........................................................................................................................267 TESTING BRAKE OIL PRESSURE..................................................................................................................268 MEASURING BRAKE PERFORMANCE.................................................................................................................269 MEASURING BRAKE DISC WEAR...................................................................................................................270 BLEEDING AIR FROM BRAKE SYSTEM..............................................................................................................271 TESTING AND ADJUSTING ACCUMULATOR CHARGE PRESSURE...........................................................................................272 MEASURING PARKING BRAKE PERFORMANCE.........................................................................................................273 MANUAL RELEASE OF PARKING BRAKE.............................................................................................................274 TESTING WEAR OF PARKING BRAKE DISC..........................................................................................................275 TESTING WORK EQUIPMENT CONTROL LEVER........................................................................................................276 MEASURING WORK EQUIPMENT HYDRAULIC PRESSURE.................................................................................................278 TESTING WORK EQUIPMENT......................................................................................................................282 TESTING AND ADJUSTING BUCKET POSITIONER.....................................................................................................284 TESTING AND ADJUSTING BOOM KICK-OUT.........................................................................................................285 ADJUSTING MAIN MONITOR......................................................................................................................287 TESTING FUEL LEVEL SENSOR...................................................................................................................288 TROUBLESHOOTING.................................................................................................................................289 POINTS TO REMEMBER WHEN TROUBLESHOOTING ....................................................................................................290 SEQUENCE OF EVENTS IN TROUBLESHOOTING ......................................................................................................291 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE............................................................................................292 CHECKS BEFORE TROUBLESHOOTING ..............................................................................................................300 METHOD OF USING TROUBLESHOOTING CHARTS .....................................................................................................301 CONNECTOR TYPES AND MOUNTING LOCATIONS .....................................................................................................309 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS..................................................................................................316 TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)...................................................................................................326 S-1 Starting performance is poor........................................................................................................327 S-2 Engine does not start...............................................................................................................328 (1) Engine does not turn............................................................................................................328 (2) Engine turns but no exhaust gas comes out.......................................................................................329 (3) Exhaust gas comes out but engine does not start.................................................................................330 S-3 Engine does not pick up smoothly....................................................................................................331 S-4 Engine stops during operations......................................................................................................332 S-5 Engine does not rotate smoothly.....................................................................................................333 S-6 Engine lacks power..................................................................................................................334 S-7 Exhaust gas is black................................................................................................................335 S-8 Oil consumption is excessive or exhaust gas is blue.................................................................................336 S-9 Oil becomes contaminated quickly....................................................................................................337 S-10 Fuel consumption is excessive......................................................................................................338 S-11 Oil is in cooling water, or water spurts or water level goes down..................................................................339 S-12 Oil pressure lamp lights up........................................................................................................340 S-13 Oil level rises....................................................................................................................341 S-14 Water temperature becomes too high.................................................................................................342 S-15 Abnormal noise is made.............................................................................................................343 S-16 Vibration is excessive.............................................................................................................344 TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE).............................................................................................345 FAILURE CODE............................................................................................................................347 M-1 Main monitor does not work..........................................................................................................350 M-2 When starting switch is turned ON and engine is started immediately, all lamps stay lighted up......................................351 M-3 Speedometer display does not work properly..........................................................................................352 M-4 Abnormality in shift indicator......................................................................................................353 (a) Stays at N even when directional lever is at F..................................................................................353 (b) Stays at N even when directional lever is at R..................................................................................353 (c) Does not display N even when directional lever is at N and displays R when directional lever is at F............................353 (d) Does not display N even when directional lever is at N and displays F when directional lever is at R............................354 (e) Does not display 1st, 4th.......................................................................................................354 (f) Does not display 3rd, 4th.......................................................................................................354 M-5 High beam does not light up.........................................................................................................356 M-6 Turn signal display does not light up...............................................................................................357 (a) L.H. turn signal does not light up..............................................................................................357 (b) R.H. turn signal does not light up..............................................................................................357 M-7 Abnormality in parking display......................................................................................................358 (a) Parking lamp does not light up..................................................................................................358 (b) Parking lamp stays lighted up...................................................................................................358 M-8 Abnormality in preheating system....................................................................................................359 (a) Does not carry out preheating...................................................................................................359 (b) Always carries out preheating for 1 minute......................................................................................360 (c) Preheating stays on.............................................................................................................360 (d) Preheating time becomes shorter, or there is fluctuation........................................................................361 M-9 Night lighting does not light up....................................................................................................362 M-10 Abnormality in front working lamp..................................................................................................363 (a) Neither monitor display nor front working lamp light up.........................................................................363 (b) Working lamp lights up but monitor display does not light up....................................................................363 (c) Monitor lights up but working lamp does not light up............................................................................363 M-11 Abnormality in rear working lamp...................................................................................................364 (a) Neither monitor display nor rear working lamp light up..........................................................................364 (b) Working lamp lights up but monitor display does not light up....................................................................364 (c) Monitor lights up but working lamp does not light up............................................................................364 M-12 Abnormality in transmission cut-off................................................................................................366 (a) When monitor switch is pressed, transmission cut-off function is not actuated and display goes out..............................366 (b) Monitor display goes out but transmission cut-off function is actuated when left brake pedal is depressed.......................366 (c) Monitor display goes out but transmission cut-off function is always actuated...................................................366 (d) Cut-off function is always actuated regardless of monitor display...............................................................366 (e) Monitor display lights up but cut-off function is not actuated..................................................................367 M-13 Abnormality in parking brake dragging warning......................................................................................368 (a) When parking brake is applied, buzzer sounds intermittently even when directional lever is at N, and caution lamp flashes.......368 (b) When parking brake is applied, buzzer does not sound and caution lamp does not light up even when directional lever is at po....368 M-14 When parking brake dragging warning is given, buzzer and caution lamp are actuated continuously, or they are not actuated..........369 (a) Actuated continuously...........................................................................................................369 (b) Not actuated....................................................................................................................369 M-15 Abnormality in buzzer..............................................................................................................370 (a) Buzzer does not sound for 3 seconds when starting switch is turned ON...........................................................370 (b) Buzzer always sounds............................................................................................................370 M-16 Condition of monitor switches is not stored in memory..............................................................................371 M-17 Abnormality in failure display mode................................................................................................372 (a) Failure display mode does not work..............................................................................................372 (b) Time elapsed since failure does not advance.....................................................................................372 M-18 Abnormality in emergency steering normal display...................................................................................373 (a) Emergency steering normal display does not light up.............................................................................373 (b) Emergency steering normal display stays lighted up..............................................................................373 M-19 Abnormality in emergency steering actuation display................................................................................374 (a) Emergency steering actuation display does not light up..........................................................................374 (b) Emergency steering actuation display stays lighted up...........................................................................374 M-20 Abnormality in auto-greasing.......................................................................................................375 (a) Forced greasing cannot be carried out...........................................................................................375 (b) Monitor display flashes rapidly (2 times/sec)...................................................................................375 (c) When no more grease remains, monitor display flashes rapidly (2 times/sec)......................................................375 (d) Monitor display flashes slowly (1 time/set).....................................................................................376 (e) Monitor display goes out........................................................................................................376 TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM (K MODE)......................................................................................377 K-1 When starting switch is turned ON, all lamps on maintenance monitor do not light up for 3 seconds, maintenance monitor does ........378 (a) All lamps on maintenance monitor do not light up for 3 seconds..................................................................378 (b) Some lamps do not light up......................................................................................................379 K-2 When starting switch is turned ON, all lamps on maintenance monitor light up but do not go out......................................379 K-3 When engine is started immediately after starting switch is turned ON, all lamps on maintenance monitor do not go out...............380 K-4 When starting switch is turned ON (engine stopped), CHECK items flash...............................................................381 (a) Engine oil level display flashes................................................................................................381 (b) Engine water level display flashes..............................................................................................382 K-5 When starting switch is turned ON (engine started), CAUTION items flash.............................................................383 (a) Engine oil pressure display flashes.............................................................................................383 (b) Battery charge level display flashes............................................................................................384 (c) Brake oil pressure display flashes..............................................................................................385 (d) Air cleaner display flashes.....................................................................................................386 K-6 CAUTION items are flashing but alarm buzzer does not sound..........................................................................387 K-7 There is no abnormality in monitor display but alarm buzzer sounds..................................................................388 K-8 CHECK items or CAUTION items are flashing but CHECK lamp or CAUTION lamp does not light up..........................................389 (a) CHECK lamp......................................................................................................................389 (b) CAUTION lamp....................................................................................................................389 K-9 There is no abnormality in maintenance monitor display but CHECK lamp or CAUTION lamp lights up.....................................390 (a) CHECK lamp......................................................................................................................390 (b) CAUTION lamp....................................................................................................................390 K-10 Night lighting does not light up when lamp switch is turned ON.....................................................................391 K-11 Night lighting lights up even when lamp switch is OFF..............................................................................392 K-12 Service meter does not work........................................................................................................393 K-13 Service meter is running even when engine is stopped...............................................................................393 K-14 Abnormality in gauge...............................................................................................................394 (a) Abnormality in fuel gauge.......................................................................................................394 (b) Abnormality in engine water temperature gauge...................................................................................395 (c) Abnormality in torque converter oil temperature gauge...........................................................................396 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)...............................................................................................397 E-1 Engine does not start...............................................................................................................398 (a) Starting motor does not turn....................................................................................................398 (b) Starting motor turns............................................................................................................402 E-2 Engine does not stop................................................................................................................404 E-3 Engine stops when machine is traveling..............................................................................................404 E-4 Parking brake does not work.........................................................................................................405 (a) Parking brake has no effect when parking brake switch is turned ON..............................................................405 (b) Parking brake has no effect when brake pressure drops...........................................................................405 E-5 Parking brake is applied when machine is traveling..................................................................................406 E-6 Parking brake is released when starting switch is turned ON.........................................................................408 E-7 Transmission does not change to neutral when parking brake is applied...............................................................408 TROUBLESHOOTING OF TRANSMISSION CONTROLLER SYSTEM (A MODE)..................................................................................409 1. Function.............................................................................................................................410 2. When carrying out troubleshooting....................................................................................................410 3. Failure code.........................................................................................................................410 4. Table of failure modes and causes....................................................................................................411 A-1 Failure code [10] Modulation valve solenoid system..................................................................................412 A-2 Failure code [11] Short circuit in power supply for modulation valve solenoid system................................................413 A-3 Failure code [12] F solenoid signal system..........................................................................................414 A-4 Failure code [13] R solenoid signal system..........................................................................................414 A-5 Failure code [14] Abnormality in H-L solenoid signal system.........................................................................415 A-6 Failure code [16] Abnormality in speed solenoid signal system.......................................................................416 A-7 Failure code [17] Brake output signal system........................................................................................417 A-8 Failure code [20] Abnormality in directional lever signal system....................................................................418 A-9 Failure code [21] Abnormality in speed lever signal system..........................................................................419 A-10 Failure code [22] Abnormality in travel speed signal system........................................................................420 A-11 Failure code [23] Abnormality in engine speed signal...............................................................................421 A-12 Hold switch system.................................................................................................................422 A-13 Kick-down switch system............................................................................................................422 A-14 Transmission cut-off signal system.................................................................................................423 A-15 Neutralizer signal system..........................................................................................................424 A-16 Buzzer signal system...............................................................................................................425 A-17 Network signal system..............................................................................................................426 A-18 Controller power supply system.....................................................................................................427 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (T MODE).................................................................................428 T-1 Machine does not start..............................................................................................................429 T-2 Travel speed is slow, thrusting power is weak, lacks power on slopes ..............................................................431 T-3 Excessive shock when starting machine or shifting gear..............................................................................433 T-4 Excessive time lag when starting machine or shifting gear...........................................................................434 T-5 Torque converter oil temperature is high ...........................................................................................435 T-6 Steering does not turn .............................................................................................................436 T-7 Steering wheel is heavy ............................................................................................................437 T-8 Steering wheel shakes or jerks .....................................................................................................438 T-9 Machine deviates to one side when traveling .......................................................................................438 T-10 Turning radius is different between left and right ...............................................................................438 T-11 Brakes do not work or braking effect is poor ......................................................................................439 T-12 Brakes are not released or brakes drag ............................................................................................440 T-13 Parking brake is not released or brake drags ......................................................................................441 T-14 Lift arm does not rise ............................................................................................................442 T-15 Lift arm movement is slow or lift arm lacks lifting power .........................................................................443 T-16 When lift arm is raised, it moves slowly at a certain height ......................................................................444 T-17 Bucket cannot be pushed with lift cylinder ........................................................................................444 T-18 Excessive hydraulic drift of lift arm .............................................................................................444 T-19 Lift arm shakes during operation ..................................................................................................444 T-20 Lift arm drops momentarily when control lever is operated from HOLD to RAISE .....................................................445 T-21 Bucket does not tilt back..........................................................................................................446 T-22 Bucket movement is slow or tilt-back lacks power...................................................................................447 T-23 Bucket movement is slow during tilt-back operation ................................................................................448 T-24 Bucket cannot be pushed with dump cylinder ........................................................................................448 T-25 Excessive hydraulic drift of bucket ...............................................................................................448 T-26 Bucket shakes during loading operation ............................................................................................449 T-27 Bucket dumps momentarily when control lever is operated from HOLD to TILT ........................................................449 T-28 Work equipment control levers are heavy or do not move smoothly....................................................................450 30 DISASSEMBLY AND ASSEMBLY.........................................................................................................................451 METHOD OF USING MANUAL .........................................................................................................................453 PRECAUTIONS WHEN CARRYING OUT OPERATION ........................................................................................................454 SPECIAL TOOL LIST ..............................................................................................................................456 STARTING MOTOR..................................................................................................................................458 REMOVAL.....................................................................................................................................458 INSTALLATION ...............................................................................................................................458 ALTERNATOR .....................................................................................................................................459 REMOVAL.....................................................................................................................................459 INSTALLATION................................................................................................................................459 ENGINE OIL COOLER...............................................................................................................................460 REMOVAL.....................................................................................................................................460 INSTALLATION ...............................................................................................................................460 FUEL INJECTION PUMP.............................................................................................................................461 REMOVAL.....................................................................................................................................461 INSTALLATION................................................................................................................................462 WATER PUMP......................................................................................................................................463 REMOVAL.....................................................................................................................................463 INSTALLATION................................................................................................................................463 TURBOCHARGER....................................................................................................................................464 REMOVAL.....................................................................................................................................464 INSTALLATION................................................................................................................................464 NOZZLE HOLDER...................................................................................................................................465 REMOVAL.....................................................................................................................................465 INSTALLATION................................................................................................................................465 THERMOSTAT .....................................................................................................................................466 REMOVAL.....................................................................................................................................466 INSTALLATION ...............................................................................................................................466 CYLINDER HEAD...................................................................................................................................467 REMOVAL.....................................................................................................................................467 INSTALLATION................................................................................................................................471 RADIATOR .......................................................................................................................................473 REMOVAL.....................................................................................................................................473 INSTALLATION................................................................................................................................475 ENGINE..........................................................................................................................................476 REMOVAL.....................................................................................................................................476 INSTALLATION................................................................................................................................481 TORQUE CONVERTER, TRANSMISSION .................................................................................................................483 REMOVAL.....................................................................................................................................483 INSTALLATION ...............................................................................................................................490 TORQUE CONVERTER................................................................................................................................492 DISASSEMBLY.................................................................................................................................492 ASSEMBLY....................................................................................................................................494 TRANSMISSION....................................................................................................................................497 DISASSEMBLY.................................................................................................................................497 ASSEMBLY....................................................................................................................................502 TRANSMISSION CLUTCH PACK .......................................................................................................................508 DISASSEMBLY.................................................................................................................................508 ASSEMBLY....................................................................................................................................517 PARKING BRAKE...................................................................................................................................529 DISASSEMBLY.................................................................................................................................529 ASSEMBLY ...................................................................................................................................531 TRANSMISSION CONTROL VALVE .....................................................................................................................534 REMOVAL.....................................................................................................................................534 INSTALLATION................................................................................................................................536 DISASSEMBLY ...............................................................................................................................537 ASSEMBLY....................................................................................................................................542 TRANSMISSION ACCUMULATOR VALVE..................................................................................................................548 DISASSEMBLY.................................................................................................................................548 ASSEMBLY....................................................................................................................................549 DRIVE SHAFT ....................................................................................................................................550 DISASSEMBLY.................................................................................................................................550 ASSEMBLY ...................................................................................................................................552 FRONT AXLE .....................................................................................................................................554 REMOVAL.....................................................................................................................................554 INSTALLATION ...............................................................................................................................556 REAR AXLE.......................................................................................................................................557 REMOVAL.....................................................................................................................................557 INSTALLATION................................................................................................................................560 FRONT DIFFERENTIAL..............................................................................................................................562 REMOVAL.....................................................................................................................................562 INSTALLATION................................................................................................................................565 REAR DIFFERENTIAL ..............................................................................................................................567 REMOVAL.....................................................................................................................................567 INSTALLATION ...............................................................................................................................570 DIFFERENTIAL....................................................................................................................................572 DISASSEMBLY.................................................................................................................................572 ASSEMBLY ...................................................................................................................................575 FINAL DRIVE.....................................................................................................................................583 DISASSEMBLY.................................................................................................................................583 ASSEMBLY....................................................................................................................................586 CENTER HINGE PIN ...............................................................................................................................590 REMOVAL.....................................................................................................................................590 INSTALLATION................................................................................................................................599 STEERING VALVE (ORBIT ROLL) ...................................................................................................................605 REMOVAL.....................................................................................................................................605 INSTALLATION................................................................................................................................606 STEERING VALVE .................................................................................................................................607 DISASSEMBLY.................................................................................................................................607 ASSEMBLY....................................................................................................................................610 REMOVAL ....................................................................................................................................615 INSTALLATION ...............................................................................................................................616 STEERING DEMAND VALVE ..........................................................................................................................617 DISASSEMBLY.................................................................................................................................617 ASSEMBLY ...................................................................................................................................621 STEERING, SWITCH PUMP...........................................................................................................................625 REMOVAL.....................................................................................................................................625 INSTALLATION................................................................................................................................628 STEERING CYLINDER...............................................................................................................................629 REMOVAL.....................................................................................................................................629 INSTALLATION................................................................................................................................630 BRAKE VALVE.....................................................................................................................................631 REMOVAL.....................................................................................................................................631 INSTALLATION ...............................................................................................................................632 RIGHT BRAKE VALVE (TANDEM) .....................................................................................................................633 DISASSEMBLY.................................................................................................................................633 ASSEMBLY ...................................................................................................................................634 LEFT BRAKE VALVE (SINGLE) ......................................................................................................................635 DISASSEMBLY.................................................................................................................................635 ASSEMBLY....................................................................................................................................636 SLACK ADJUSTER.................................................................................................................................637 REMOVAL.....................................................................................................................................637 INSTALLATION ...............................................................................................................................638 DISASSEMBLY ................................................................................................................................639 ASSEMBLY ...................................................................................................................................640 BRAKE...........................................................................................................................................641 DISASSEMBLY.................................................................................................................................641 ASSEMBLY....................................................................................................................................647 PARKING BRAKE DISC .............................................................................................................................655 REMOVAL.....................................................................................................................................655 INSTALLATION ...............................................................................................................................657 ACCUMULATOR CHARGE VALVE........................................................................................................................658 REMOVAL.....................................................................................................................................658 INSTALLATION ...............................................................................................................................658 DISASSEMBLY.................................................................................................................................659 ASSEMBLY....................................................................................................................................661 HYDRAULIC TANK..................................................................................................................................663 REMOVAL.....................................................................................................................................663 INSTALLATION................................................................................................................................665 WORK EQUIPMENT, PPC PUMP.......................................................................................................................666 REMOVAL.....................................................................................................................................666 INSTALLATION................................................................................................................................669 PPC VALVE ......................................................................................................................................670 REMOVAL.....................................................................................................................................670 INSTALLATION................................................................................................................................671 DISASSEMBLY.................................................................................................................................672 ASSEMBLY....................................................................................................................................673 MAIN CONTROL VALVE .............................................................................................................................674 REMOVAL.....................................................................................................................................674 INSTALLATION................................................................................................................................676 DISASSEMBLY ................................................................................................................................677 ASSEMBLY ...................................................................................................................................679 DUMP CYLINDER...................................................................................................................................681 REMOVAL.....................................................................................................................................681 INSTALLATION ...............................................................................................................................682 LIFT CYLINDER ..................................................................................................................................683 REMOVAL.....................................................................................................................................683 INSTALLATION ...............................................................................................................................684 HYDRAULIC CYLINDER..............................................................................................................................685 DISASSEMBLY.................................................................................................................................685 ASSEMBLY....................................................................................................................................688 WORK EQUIPMENT ................................................................................................................................691 REMOVAL.....................................................................................................................................691 INSTALLATION................................................................................................................................694 COUNTERWEIGHT ..................................................................................................................................696 REMOVAL.....................................................................................................................................696 INSTALLATION................................................................................................................................696 FUEL TANK ......................................................................................................................................697 REMOVAL.....................................................................................................................................697 INSTALLATION ...............................................................................................................................698 CAB.............................................................................................................................................699 REMOVAL.....................................................................................................................................699 INSTALLATION................................................................................................................................700 MAIN MONITOR ...................................................................................................................................701 REMOVAL.....................................................................................................................................701 INSTALLATION................................................................................................................................702 MAINTENANCE MONITOR ............................................................................................................................703 REMOVAL.....................................................................................................................................703 INSTALLATION................................................................................................................................703 AIR CONDITIONER UNIT............................................................................................................................704 REMOVAL.....................................................................................................................................704 INSTALLATION ...............................................................................................................................709 AIR CONDITIONER CONDENSER .....................................................................................................................710 REMOVAL.....................................................................................................................................710 INSTALLATION................................................................................................................................711 DRY RECEIVER....................................................................................................................................712 REMOVAL.....................................................................................................................................712 INSTALLATION................................................................................................................................712 AIR CONDITIONER COMPRESSOR......................................................................................................................713 REMOVAL.....................................................................................................................................713 INSTALLATION ...............................................................................................................................714 40 MAINTENANCE STANDARD.............................................................................................................................715 ENGINE MOUNT, TRANSMISSION MOUNT ...............................................................................................................716 TORQUE CONVERTER ...............................................................................................................................717 TRANSMISSION....................................................................................................................................718 TRANSMISSION CONTROL VALVE .....................................................................................................................725 DRIVE SHAFT ....................................................................................................................................732 DIFFERENTIAL ...................................................................................................................................733 FINAL DRIVE ....................................................................................................................................735 AXLE MOUNT .....................................................................................................................................736 STEERING COLUMN ................................................................................................................................737 STEERING VALVE .................................................................................................................................738 STEERING CYLINDER MOUNT ........................................................................................................................739 SLACK ADJUSTER .................................................................................................................................740 BRAKE VALVE ....................................................................................................................................741 BRAKE...........................................................................................................................................744 PARKING BRAKE...................................................................................................................................746 TORQUE CONVERTER, TRANSMISSION PUMP ............................................................................................................747 STEERING, SWITCH PUMP ..........................................................................................................................748 HYDRAULIC, PPC PUMP ............................................................................................................................749 PPC VALVE ......................................................................................................................................750 CUT-OFF VALVE ..................................................................................................................................751 MAIN CONTROL VALVE .............................................................................................................................752 LIFT CYLINDER ..................................................................................................................................756 DUMP CYLINDER ..................................................................................................................................757 CENTER HINGE PIN ...............................................................................................................................758 WORK EQUIPMENT LINKAGE .........................................................................................................................760 BUCKET .........................................................................................................................................762 BUCKET POSITIONER AND BOOM KICK-OUT ............................................................................................................763 90 OTHERS...........................................................................................................................................764 ELECTRIC CIRCUIT DIAGRAM (1/4)..................................................................................................................765 ELECTRIC CIRCUIT DIAGRAM (2/4)..................................................................................................................766 ELECTRIC CIRCUIT DIAGRAM (3/4)..................................................................................................................767 ELECTRIC CIRCUIT DIAGRAM (4/4)..................................................................................................................768
IMAGES PREVIEW OF THE MANUAL:
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 WA450-3 Wheel Loader Shop Manual 53001 and up – PDF DOWNLOAD
Add a review
Elijah Elijah –