Komatsu WF550-3 WF550T-3 Trash Compaktor Shop Manual VEBM090100 – PDF DOWNLOAD

Description

Komatsu WF550-3 WF550T-3 Trash Compaktor Shop Manual VEBM090100 – PDF DOWNLOAD

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DESCRIPTION:

Komatsu WF550-3 WF550T-3 Trash Compaktor Shop Manual VEBM090100 – PDF DOWNLOAD

SERIAL NUMBER
WF550-3 W089-50001 AND UP
WF550T-3 W090-50001 AND UP

FOREWORD:

This shop manual has been prepared as an aid to improve the quality of repairs by giving the operator 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.
The manual is divided into chapters on each main group of components; these chapters are further divided into the
following sections.
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 ADJUSTMENTS
This sections 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.
REMOVAL AND INSTALLATION
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.
STANDARD MAINTENANCE
This section gives the judgement standards when inspecting disassembled parts.

TABLE OF CONTENTS:

Komatsu WF550-3 WF550T-3 Trash Compaktor Shop Manual VEBM090100 – PDF DOWNLOAD

WF550-3 / WF550T-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
WF550-3 16
WF550T-3 18
Weight table 20
WF550-3 20
WF550T-3 21
10 STRUCTURE AND FUNCTION 23
General 26
Outline 27
Drive unit cooling fan 29
Hydraulic motor 29
Cooling fan controller 30
Forward/reverse timer 31
Electromagnetic selector valve 32
Transmission 34
Main relief, torque converter relief valve 40
Outline 41
Operation of main relief valve 42
Operation of torque converter relief valve 43
Axle 46
Front 46
Rear 47
Differential 48
Front differential 48
Rear differential 48
Outline 49
Limited slip differential 50
Operation of limited slip differential 51
Mechanism for generation of brake torque of left and right side gears (6) 51
When travelling in straight line 52
When turning 53
Final drive 54
Outline 54
Operation 54
Axle mount, center hinge pin 55
Outline 55
Steering piping 56
Brake piping 59
Brake 62
Function 63
Operation 63
Parking brake emergency release solenoid valve 65
Function 65
Operation 65
Hydraulic piping 66
Work equipment lever linkage 67
WF550T-3 67
WF550-3 68
Hydraulic tank 69
PPC valve 71
WF550T-3 71
WF550-3 73
Operation of PPC valve 75
Function of PPC valve 76
Operation 76
Cut-off valve 79
WF550-3 79
Function 79
Operation of cut-off valve 80
Operation 80
Main control valve 81
WF550T-3 81
WF550-3 83
Main relief valve 85
WF550T-3 85
Function 85
Operation 85
WF550-3 86
Function 86
Operation 86
Safety valve (with suction) 87
Function 87
Operation as safety valve 87
Operation as suction valve 88
Suction valve 89
Function 89
Operation 89
Float selector valve and unload valve 90
WF550-3 90
Function 90
Operation 90
Operation (WF550T-3) 92
Lift spool hold position 92
Lift spool at raise position 94
Lift spool at lower position 96
Lift spool at float position 98
Operation (WF550-3) 100
Boom and bucket spool hold position 100
Boom spool at raise position 102
Boom spool at lower position 104
Boom spool at float position 106
Bucket spool at dump position 108
Bucket spool at tilt position 110
Bucket positioner and boom kick-out (WF550-3) 112
Operation of proximity switch for boom kick-out 112
Action of proximity switch for boom-kickout 114
Operation of proximity switch for bucket positioner 115
Action of proximity switch for bucket positioner 116
Air conditioner 117
Air conditioner piping 117
Machine monitor system 118
Outline 119
Main monitor 120
Outline 121
Main monitor display function 122
Main monitor switch function 123
Preheating output function 123
Trouble data display mode (when optional controller are installed) 124
Maintenance monitor 126
Outline 127
Maintenance monitor display function 128
All-Range Electronic Control Automatic Transmission System 129
Outline of system 129
System structure diagram 130
Function 131
Transmission controller power source 136
Input signals 137
Output signals 140
LED display 142
Transmission controller 144
Connector signals 145
Electric transmission control 148
Function 149
Combination switch 150
Outline 150
General locations, function 150
Operation 151
20 TESTING AND ADJUSTING 155
Standard value table for engine 157
Standard value table for chassis 158
WF550-3 158
WF550T-3 163
Standard value table for electrical parts 167
Table of required tools 179
Sketch of special tools 180
Tool N 180
Measuring blow-by pressure 181
Measuring engine oil pressure 182
Adjusting speed sensor 183
Engine speed sensor 183
Transmission output shaft speed sensor 183
Adjusting of engine stop motor cable 184
Torque converter and transmission oil pressure 186
Steering oil pressure 190
Measuring 190
Adjusting 192
Measuring parking brake oil pressure 193
Testing and adjusting PPC oil pressure 195
Measuring 195
Adjusting 197
Adjusting PPC valve linkage 198
Work equipment hydraulic pressure 199
Adjusting 200
Adjusting work equipment lever linkage 201
Adjusting main monitor (speedometer module) 202
20 TROUBLESHOOTING 205
Outline 206
Connector types and mounting locations 207
Connector arrangement diagram 210
20 TROUBLESHOOTING FOR RADIATOR COOLING FAN SYSTEM (EC MODE) 215
Electric circuit diagram of cooling fan system 216
EC-1 Fan does not rotate (selector switch position: AUTO) 218
EC-2 222
Fan does not rotate (selector switch position: MANUAL) 222
EC-3 226
Fan does not switch from forward to reverse rotation (selector switch position: AUTO) 226
EC-4 227
Fan does not switch from forward to reverse rotation (selector switch position: MANUAL) 227
EC-5 228
Fan does not switch from reverse to forward rotation (selector switch position: AUTO) 228
EC-6 229
Fan does not switch from reverse to forward rotation (selector switch position: MANUAL) 229
EC-7 230
When direction of fan is switched, it immediately switches 230
20 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE) 233
H-1 Blade does not move 234
H-2 Blade is slow or blade lacks power 235
H-3, H-4, H-5, H-6 236
H-3 – When blade is raised, it moves slowly at a certain height 236
H-4 – Blade cannot be pushed with lift cylinder (blade floats) 236
H-5 – Excessive hydraulic drift of blade 237
H-6 – Blade shakes during operation 237
30 DISASSEMBLY AND ASSEMBLY 239
Special tool list 240
Sketches of special tools 245
Starting motor assembly 248
Removal 248
Installation 248
Engine front seal 249
Removal 249
Installation 249
Radiator assembly 250
Removal 250
Installation 251
Engine assembly 252
Removal 252
Installation 256
Front axle assembly 257
Removal 257
Installation 258
Front differential assembly 259
Removal 259
Installation 261
Rear axle assembly 262
Removal 262
Installation 267
Rear differential assembly 268
Removal 268
Installation 269
Differential gear assembly 270
Disassembly 270
Fine disassembly of pinion assembly 271
Disassembly of differential gear assembly 273
Assembly 274
Assembly of differential gear assembly 274
Fine assembly of pinion assembly 276
Assembly of differential assembly 277
Final drive assembly 282
Disassembly / assembly 282
Steering cylinder assembly 283
Removal 283
Installation 284
Steering valve assembly 285
Removal 285
Installation 287
Slack adjuster assembly 288
Removal 288
Installation 288
Hydraulic tank assembly 289
Removal 289
Installation 291
PPC valve assembly 292
Removal 292
Installation 293
Main control valve assembly 294
Removal (WF550-3) 294
Installation (WF550-3) 297
Removal (WF550T-3) 297
Installation (WF550) 299
Disassembly 300
WF550T-3 300
Assembly 304
WF550T-3 304
Lift cylinder assembly 308
Removal (WF550T-3) 308
Installation (WF550T-3) 309
Boom, bucket and lift cylinders assembly 310
Disassembly 310
Assembly 312
Work equipment assembly 315
Removal (WF550T-3) 315
Installation (WF550T-3) 316
Engine hood assembly 317
Removal 317
Installation 318
Floor frame assembly 319
Removal 319
Installation 322
Fuel tank assembly 323
Removal 323
Installation 323
Air conditioner condenser assembly 324
Removal 324
Installation 324
Reciver tank 325
Removal 325
Installation 325
40 MAINTENANCE STANDARD 327
Engine mount 328
Transmission mount 329
Damper 330
Torque converter charging pump 331
Torque converter, PTO 332
Transmission 334
Transfer 338
Main relief, torque converter relief valve 340
Lubrication relief valve 341
Drive shaft 342
Center support 343
Differential 344
Final drive 346
Axle mount 347
Center hinge pin 348
Steering column 350
Steering pump 351
Steering valve 352
Steering cylinder mount 353
Brake valve 354
Slack adjuster 356
Brake 357
Parking brake 358
Hydraulik pump 359
WF550T-3 359
WF550-3 360
Switch, PPC pump 361
PPC valve 362
WF550T-3 362
WF550-3 363
Main control valve 364
WF550T-3 364
WF550-3 366
Cut-off valve 368
WF550-3 368
Hydraulic cylinders 370
WF550T-3 370
WF550-3 372
Work equipment linkage 374
WF550T-3 374
WF550-3 376
Bucket positioner and boom kick-out 378
WF550-3 378
ROPS cab 379
90 OTHERS 381
Hydraulic circuit diagram for power train 382
Brake circuit diagram 384
Electric circuit for cooling fan 386
Work equipment hydraulic circuit diagram (WF550T-3) 387
Work equipment hydraulic circuit diagram (WF550-3) 389
Electric circuit diagram (1/4) 391
Electric circuit diagram (2/4) 392
Electric circuit diagram (3/4) 393
Electric circuit diagram (4/4) 394

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PLEASE NOTE:

• This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
• Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.

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