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KOMATSU WF450-3 WF450T-3 TRASH COMPACTOR SHOP MANUAL VEBM080100 – PDF
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Description
KOMATSU WF450-3 WF450T-3 TRASH COMPACTOR SHOP MANUAL VEBM080100 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU WF450-3 WF450T-3 TRASH COMPACTOR SHOP MANUAL VEBM080100 – PDF DOWNLOAD
Language : English
Pages : 324
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU WF450-3 WF450T-3 TRASH COMPACTOR SHOP MANUAL VEBM080100 – PDF DOWNLOAD
WF450-3 / WF450T-3..................................................................................... 1 CONTENTS............................................................................................... 3 00 SAFETY.............................................................................................. 5 Safety notice...................................................................................... 6 Preparations for work.......................................................................... 7 Precautions during work........................................................................ 8 Foreword........................................................................................... 10 How to read the shop manual........................................................................ 11 Volumes........................................................................................ 11 Distribution and updating...................................................................... 11 Filing method.................................................................................. 11 Symbols........................................................................................ 12 Hoisting instructions.............................................................................. 13 01 GENERAL............................................................................................. 15 Specifications..................................................................................... 16 WF450-3........................................................................................ 16 WF450T-3....................................................................................... 18 Weight table....................................................................................... 20 10 STRUCTURE AND FUNCTION.............................................................................. 21 Power train........................................................................................ 24 Transmission....................................................................................... 26 Transmission solenoid valve........................................................................ 31 Axle............................................................................................... 33 Front axle..................................................................................... 33 Rear axle...................................................................................... 34 Differential....................................................................................... 35 Front differential............................................................................. 35 Rear differential.............................................................................. 35 Final drive........................................................................................ 39 Axle mount, center hinge pin....................................................................... 41 Steering piping.................................................................................... 42 Brake piping....................................................................................... 45 Brake.............................................................................................. 47 Parking brake...................................................................................... 49 Hydraulic component layout......................................................................... 53 Work equipment lever linkage....................................................................... 54 WF450T-3....................................................................................... 54 WF450-3........................................................................................ 55 Hydraulic tank..................................................................................... 56 PPC valve.......................................................................................... 57 WF450T-3....................................................................................... 57 WF450-3........................................................................................ 59 Operation of PPC valve [at neutral]............................................................ 61 Function of PPC valve.......................................................................... 62 Cut-off valve...................................................................................... 65 WF450-3........................................................................................ 65 Operation of cut-off valve..................................................................... 66 Main control valve................................................................................. 67 WF450T-3....................................................................................... 67 WF450-3........................................................................................ 69 Main relief valve.............................................................................. 71 Safety valve (with suction).................................................................... 73 Operation.................................................................................. 73 Suction valve.................................................................................. 74 Float selector valve and unload valve.......................................................... 75 WF450-3.................................................................................... 75 Operation – WF450T-3........................................................................... 76 Operation – WF450-3............................................................................ 80 Bucket positioner and boom kick-out................................................................ 86 WF450-3........................................................................................ 86 Operation of proximity switch.............................................................. 86 Operation of proximity switch.............................................................. 89 Air conditioner.................................................................................... 91 Air conditioner piping......................................................................... 91 Machine monitor system............................................................................. 92 Main monitor....................................................................................... 93 Main monitor display function.................................................................. 94 Main monitor switch function................................................................... 95 Preheating output function..................................................................... 96 Trouble data display mode (When optional controller are installed)............................. 97 Maintenance monitor................................................................................ 98 Maintenance monitor display function........................................................... 99 Engine starting circuit............................................................................102 Engine stop circuit................................................................................103 Preheating circuit.................................................................................104 (Automatic preheating system)..................................................................104 Electric transmission control......................................................................106 WF450T-3.......................................................................................106 WF450-3........................................................................................107 Combination switch.............................................................................108 Kick-down switch...................................................................................111 WF450-3........................................................................................111 Kick-down switch...........................................................................111 Kick-down electric circuit diagram.................................................................112 WF450-3........................................................................................112 Normal operation...........................................................................112 Kick-down switch operated (case I).........................................................114 Canceling actuation of kick-down switch (Case I)...........................................116 Canceling actuation of kick-down switch (Case II)..........................................118 Canceling actuation of kick-down switch (Case III).........................................120 Standard value table for engine....................................................................124 Standard value table for chassis...................................................................125 Standard value table for electrical parts..........................................................130 20 TESTING AND ADJUSTING...............................................................................121 Tools for testing, adjusting, and troubleshooting..................................................135 Testing steering wheel.............................................................................137 Measuring play of steering wheel...............................................................137 Measuring operating force of steering wheel....................................................138 Measuring operating time for steering wheel....................................................139 Testing and adjusting steering control.............................................................140 Measuring steering oil pressure....................................................................141 Testing and adjusting accumulator charge pressure..................................................143 Testing drop in wheel brake oil pressure...........................................................145 Measuring brake disc wear..........................................................................147 Bleeding air from brake system.....................................................................149 Measuring parking brake performance................................................................150 Testing and adjusting work equipment hydraulic pressure............................................151 WF450T-3.......................................................................................151 Measuring PPC hydraulic pressure...................................................................153 WF450T-3.......................................................................................153 Measuring work equipment...........................................................................155 WF450T-3.......................................................................................155 Measuring hydraulic drift of work equipment........................................................156 WF450T-3.......................................................................................156 Adjusting main monitor (speedometer module)........................................................157 20 TROUBLESHOOTING.....................................................................................161 Outline............................................................................................162 20 TROUBLESHOOTING OF HYDRAULICAL AND MECHANICAL SYSTEM (H MODE).......................................165 Work Equipment – WF450T-3..........................................................................167 H-1 Blade does not rise........................................................................167 H-2 Blade movement is slow or blade lacks lifting power........................................168 H-3 When blade is raised, it moves slowly at a certain height..................................169 H-4 Blade cannot be pushed with lift cylinder (blade floats)..................................169 H-5 Excessive hydraulic drift of blade.........................................................169 H-6 Blade and straight frame shake during operation............................................170 H-7 Blade drops momentarily when control lever is operated from HOLD to RAISE..................170 H-8 Blade does not tilt........................................................................171 H-9 Blade movement is slow or tilt lacks power.................................................172 H-10 Blade movement becomes slow during tilt operation........................................173 H-11 Blade cannot be pushed with tilt cylinder................................................173 H-12 Excessive hydraulic drift of blade........................................................173 H-13 Blade shakes during loading operation (main control valve at HOLD)........................174 H-14 Blade tilts momentarily to left when control lever is operated from HOLD to RIGHT TILT....174 H-15 Blade control lever is heavy or does not move smoothly....................................175 Steering system....................................................................................176 H-16 Steering does not turn....................................................................176 H-17 Steering wheel is heavy...................................................................177 H-18 Steering wheel wobbles or there is excessive shock........................................178 H-19 Machine steers to one side when traveling.................................................179 H-20 Turning radius to left and right is different............................................179 30 DISASSEMBLY AND ASSEMBLY............................................................................181 Special tool list..................................................................................183 Removal and installation of rear axle assembly.....................................................186 Removal and installation of hydraulic pump, PPC pump assembly......................................187 WF450-3........................................................................................187 WF450T-3.......................................................................................187 Disassembly and assembly of hydraulic cylinder assembly...........................................188 WF450-3........................................................................................188 WF450T-3.......................................................................................188 Main control valve assembly........................................................................189 Removal........................................................................................189 Installation...................................................................................190 Fuel tank..........................................................................................191 Removal........................................................................................191 Installation...................................................................................193 Radiator, oil cooler assembly......................................................................194 Removal........................................................................................194 Installation...................................................................................196 Engine hood assembly...............................................................................197 Removal........................................................................................197 Installation...................................................................................198 Lift cylinder assembly.............................................................................199 Removal........................................................................................199 Installation...................................................................................200 Tilt cylinder assembly.............................................................................201 Removal........................................................................................201 Installation...................................................................................202 Work equipment assembly............................................................................203 Removal........................................................................................203 Installation...................................................................................206 Assembly.......................................................................................212 Front axle assembly................................................................................217 Removal (WF450-3)..............................................................................217 Installation (WF450-3).........................................................................219 Removal (WF450T-3).............................................................................220 Installation (WF450T-3)........................................................................222 Removal and installation of rear axle assembly.....................................................223 Front differential assembly........................................................................224 Removal........................................................................................224 Installation...................................................................................225 Differential Assembly..............................................................................226 Disassembly....................................................................................226 Assembly.......................................................................................231 40 MAINTENANCE STANDARD................................................................................243 Engine mount, transmission mount...................................................................245 Torque converter...................................................................................246 Transmission.......................................................................................248 (1/2)..........................................................................................248 (2/2)..........................................................................................250 Forward, 1st clutch............................................................................252 2nd, reverse clutch............................................................................253 3rd, 4th clutch................................................................................254 Transmission control valve.........................................................................255 Modulation valve assembly......................................................................255 Upper valve assembly...........................................................................256 Lower valve assembly...........................................................................258 Flow valve.....................................................................................260 Accumulator valve..............................................................................261 Drive shaft........................................................................................262 Differential.......................................................................................263 Limited slip differential..........................................................................264 Final drive........................................................................................265 Axle mount.........................................................................................266 Center hinge pin...................................................................................268 Steering column....................................................................................270 Steering valve.....................................................................................271 Steering cylinder mount............................................................................272 Slack adjuster.....................................................................................273 Brake valve........................................................................................274 Left...........................................................................................274 Right..........................................................................................275 Brake..............................................................................................276 Parking brake......................................................................................277 Torque converter, transmission pump................................................................278 SAR(3) – 100...................................................................................278 Steering, switch pump..............................................................................279 SAR(3)71 + 50..................................................................................279 Hydraulic, PPC pump................................................................................280 WF450T-3 – SAR(3)80 + (1) 28...................................................................280 WF450-3 – SAR(4)140 + (1) 28...................................................................281 PPC valve..........................................................................................282 WF450T-3.......................................................................................282 WF450-3........................................................................................283 Cut-off valve......................................................................................284 WF450-3........................................................................................284 Main control valve.................................................................................286 WF450T-3.......................................................................................286 WF450-3........................................................................................288 Lift cylinder......................................................................................290 WF450T-3.......................................................................................290 Boom cylinder......................................................................................291 WF450-3........................................................................................291 Bucket cylinder....................................................................................292 WF450-3........................................................................................292 Work equipment linkage.............................................................................294 WF450T-3.......................................................................................294 WF450-3........................................................................................296 Bucket positioner and boom kick-out................................................................298 WF450-3........................................................................................298 90 OTHERS..............................................................................................299 Transmission hydraulic circuit diagram.............................................................300 Brake hydraulic circuit diagram....................................................................302 Work equipment hydraulic circuit diagram (WF450T-3)................................................305 Work equipment hydraulic circuit diagram (WF450-3).................................................307 Electric circuit diagram [1/4)] (WF450T-3).........................................................309 Electric circuit diagram [2/4)] (WF450T-3).........................................................311 Electric circuit diagram [3/4)] (WF450T-3).........................................................313 Electric circuit diagram [4/4)] (WF450T-3).........................................................315 Electric circuit diagram [1/4)] (WF450-3)..........................................................317 Electric circuit diagram [2/4)] (WF450-3)..........................................................319 Electric circuit diagram [3/4)] (WF450-3)..........................................................321 Electric circuit diagram [4/4)] (WF450-3)..........................................................323
DESCRIPTION:
KOMATSU WF450-3 WF450T-3 TRASH COMPACTOR SHOP MANUAL VEBM080100 – PDF DOWNLOAD
1. Before carrying out any greasing or repairs, read all the precautions given on the decals which are fixed to the machine.
2. When carrying out any operation, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing.
• Always wear safety glasses when hitting parts with a hammer.
• Always wear safety glasses when grinding parts with a grinder, etc.
3. If welding repairs are needed, always have a trained, experienced welder carry out the work. When carrying out welding work, always wear welding gloves, apron, glasses, cap and other clothes suited for welding work.
4. When carrying out any operation with two or more workers, always agree on the operating procedure before starting. Always inform your fellow workers before starting any step of the operation. Before starting work, hang UNDER REPAIR signs on the controls in the operator’s compartment.
5. Keep all tools in good condition and learn the correct way to use them.
6. Decide a place in the repair workshop to keep tools and removed parts. Always keep the tools and parts in their correct places. Always keep the work area clean and make sure that there is no dirt or oil on the floor. Never smoke while working. Smoke only in the areas provided for smoking.
S.S 18/12/24
