Kubota M4900 • M5700 Tractor Workshop Manual – PDF DOWNLOAD

Description

Kubota M4900 • M5700 Tractor Workshop Manual – PDF DOWNLOAD

DESCRIPTION:

Kubota M4900 • M5700 Tractor Workshop Manual – PDF DOWNLOAD

TO THE READER :

This Workshop Manual has been prepared to provide servicing personnel with
information on the mechanism, service and maintenance of KUBOTA tractors M4900
and M5700. It is divided into two parts, “Mechanism” and “Servicing” for each section
except “ENGINE” section.
■ Mechanism
Information on the construction and function are included. This part should be
understood before proceeding with troubleshooting, disassembling and servicing.
■ Servicing
The heading “General” section comes general precautions, check and maintenance
and special tools. Other section, there are troubleshooting, servicing specification lists,
checking and adjusting, disassembling and assembling, and servicing which cover
procedures, precautions, factory specifications and allowable limits.
All information illustrations and specifications contained in this manual are based on
the latest product information available at the time of publication.
The right is reserved to make changes in all information at any time without notice.

TABLE OF CONTENTS:

Kubota M4900 • M5700 Tractor Workshop Manual – PDF DOWNLOAD

TO THE READER…………………………………………………………………….. 2
SAFTY FIRST………………………………………………………………………. 3
…………………………………………………………………………….. 4
…………………………………………………………………………….. 5
SAFETY DECALS…………………………………………………………………….. 6
CAUTION………………………………………………………………………….. 7
…………………………………………………………………………….. 8
…………………………………………………………………………….. 9
…………………………………………………………………………….. 10
…………………………………………………………………………….. 11
…………………………………………………………………………….. 12
SPECIFICATIONS……………………………………………………………………. 13
…………………………………………………………………………….. 14
DIMENSIONS……………………………………………………………………….. 15
…………………………………………………………………………….. 16
…………………………………………………………………………….. 17
G GENERAL………………………………………………………………………… 18
CONTENTS……………………………………………………………………… 19
1.FEATURES………………………………………………………………… 20
2.TRACTOR IDENTIFICATION ………………………………………………….. 21
3.GENERAL PRECAUTIONS …………………………………………………….. 22
4.HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING …………………… 23
[1]WIRING …………………………………………………………….. 23
………………………………………………………………….. 24
[2]BATTERY…………………………………………………………….. 25
………………………………………………………………….. 26
5.LUBRICANTS FUEL AND COOLANT ……………………………………………. 27
6.TIGHTENING TORQUES………………………………………………………. 28
7.MAINTENANCE …………………………………………………………….. 29
……………………………………………………………………… 30
8.CHECK AND MAINTENANCE…………………………………………………… 31
[1]DAILY CHECK………………………………………………………… 31
[2]CHECK POINTS OF INITIAL 50 HOURS …………………………………. 32
………………………………………………………………….. 33
………………………………………………………………….. 34
[3]CHECK POINTS OF EVERY 50 HOURS……………………………………. 35
[4]CHECK POINTS OF EVERY 100 HOURS…………………………………… 36
………………………………………………………………….. 37
………………………………………………………………….. 38
[5]CHECK POINTS OF EVERY 200 HOURS …………………………………. 39
………………………………………………………………….. 40
………………………………………………………………….. 41
[6]CHECK POINTS OF EVERY 400 HOURS …………………………………. 42
[7]CHECK POINTS OF EVERY 600 HOURS …………………………………. 43
[8]CHECK POINTS OF EVERY 800 HOURS …………………………………. 44
[9]CHECK POINTS OF EVERY 1500 HOURS ………………………………… 44
[10]CHECK POINTS OF EVERY 3000 HOURS…………………………………. 44
[11]CHECK POINTS OF EVERY 1 YEAR ……………………………………. 45
[12]CHECK POINTS OF EVERY 2 YEARS……………………………………. 46
………………………………………………………………….. 47
[13]OTHERS ……………………………………………………………. 48
………………………………………………………………….. 49
………………………………………………………………….. 50
………………………………………………………………….. 51
………………………………………………………………….. 52
9.SPECIAL TOOLS ………………………………………………………….. 53
……………………………………………………………………… 54
……………………………………………………………………… 55
……………………………………………………………………… 56
……………………………………………………………………… 57
……………………………………………………………………… 58
……………………………………………………………………… 59
……………………………………………………………………… 60
……………………………………………………………………… 61
……………………………………………………………………… 62
……………………………………………………………………… 63
……………………………………………………………………… 64
……………………………………………………………………… 65
……………………………………………………………………… 66
……………………………………………………………………… 67
……………………………………………………………………… 68
10.TIRES………………………………………………………………….. 69
[1]TYPE OF TIRE……………………………………………………… 69
[2]TREAD ADJUSTMENT ………………………………………………….. 69
(1)Front Wheels(2WD)………………………………………………… 69
(2)Front Wheels(4WD)………………………………………………… 69
(3)Rear Wheels……………………………………………………… 70
[3]TIRE PRESSURE………………………………………………………. 71
[4]TIRE LIQUID INJECTION………………………………………………. 72
………………………………………………………………….. 73
………………………………………………………………….. 74
11.IMPLEMENT LIMITATIONS …………………………………………………. 75
……………………………………………………………………… 76
……………………………………………………………………… 77
1 ENGINE…………………………………………………………………………. 78
CONTENTS……………………………………………………………………… 79
1.FEATURES ……………………………………………………………….. 80
2.LUBRICATING SYSTEM………………………………………………………. 81
[1]OIL FILTER AND RELIEF VALVE……………………………………….. 82
3.COOLING SYSTEM………………………………………………………….. 83
4.FUEL SYSTEM ……………………………………………………………. 84
[1]FUEL LINES ………………………………………………………… 84
[2]FUEL FILTER………………………………………………………… 85
CONTENTS……………………………………………………………………… 86
1.TROUBLESHOOTING………………………………………………………….. 87
……………………………………………………………………… 88
……………………………………………………………………… 89
2.SERVICING SPECIFICATIONS…………………………………………………. 90
……………………………………………………………………… 91
……………………………………………………………………… 92
……………………………………………………………………… 93
……………………………………………………………………… 94
……………………………………………………………………… 95
3.TIGHTENING TORQUES ……………………………………………………… 96
4.CHECKING, DISASSEMBLING AND SERVICING……………………………………. 97
[1]SEPARATING ENGINE FROM TRACTOR …………………………………… 97
(1)Disassembling and Assembling …………………………………….. 97
………………………………………………………………. 98
………………………………………………………………. 99
……………………………………………………………….100
……………………………………………………………….101
……………………………………………………………….102
[2]CYLINDER HEAD ………………………………………………………103
(1)Checking and Adjusting…………………………………………….103
(2)Disassembling and Assembling ……………………………………..104
……………………………………………………………….105
……………………………………………………………….106
……………………………………………………………….107
(3)Servicing………………………………………………………..108
……………………………………………………………….109
……………………………………………………………….110
……………………………………………………………….111
……………………………………………………………….112
[3]TIMING GEARS………………………………………………………..113
(1)Disassembling and Assembling ……………………………………..113
……………………………………………………………….114
……………………………………………………………….115
……………………………………………………………….116
……………………………………………………………….117
(2)Servicing ……………………………………………………….118
……………………………………………………………….119
[4]CRANKCASE……………………………………………………………120
(1)Disassembling and Assembling………………………………………120
……………………………………………………………….121
……………………………………………………………….122
……………………………………………………………….123
(2)Servicing ……………………………………………………….124
……………………………………………………………….125
……………………………………………………………….126
……………………………………………………………….127
……………………………………………………………….128
……………………………………………………………….129
……………………………………………………………….130
……………………………………………………………….131
[5]LUBRICATING SYSTEM ………………………………………………..132
(1)Checking…………………………………………………………132
(2)Disassembling and Assembling ……………………………………..132
(3)Servicing ……………………………………………………….133
[6]COOLING SYSTEM………………………………………………………134
(1)Checking and Adjusting…………………………………………….134
(2)Disassembling and Assembling ……………………………………..135
(3)Servicing ……………………………………………………….136
[7]FUEL SYSTEM…………………………………………………………137
(1)Checking and Adjusting …………………………………………..137
……………………………………………………………….138
……………………………………………………………….139
(2)Disassembling and Assembling ……………………………………..140
2 CLUTCH………………………………………………………………………….141
CONTENTS………………………………………………………………………142
1.TRAVELLING CLUTCH ……………………………………………………….143
[1]FEATURES ……………………………………………………………143
[2]TRAVELLING CLUTCH LINKAGE ………………………………………….143
[3]OPERATION……………………………………………………………144
2.PTO CLUTCH ……………………………………………………………145
[1]STRUCTURE……………………………………………………………145
[2]OIL FLOW……………………………………………………………145
[3]PTO CLUTCH VALVE……………………………………………………146
…………………………………………………………………..147
[4]SHIFT LINKAGE ………………………………………………………148
SERVICING CONTENTS……………………………………………………………..149
1.TROUBLESHOOTING ………………………………………………………….150
………………………………………………………………………151
2.SERVICING SPECIFICATIONS…………………………………………………..152
………………………………………………………………………153
3.TIGHTENING TORQUES ………………………………………………………154
4.CHECKING, DISASSEMBLING AND SERVICING ……………………………………155
[1]TRAVELLING CLUTCH …………………………………………………..155
(1)Checking and Adjusting…………………………………………….155
(2)Disassembling and Assembling ……………………………………..155
……………………………………………………………….156
……………………………………………………………….157
……………………………………………………………….158
……………………………………………………………….159
……………………………………………………………….160
……………………………………………………………….161
(3)Servicing ……………………………………………………….162
……………………………………………………………….163
[2]HYDRAULIC PTO CLUTCH………………………………………………..164
(1)PTO Clutch Valve …………………………………………………164
……………………………………………………………….165
(2)PTO Clutch……………………………………………………….166
……………………………………………………………….167
……………………………………………………………….168
……………………………………………………………….169
……………………………………………………………….170
……………………………………………………………….171
……………………………………………………………….172
……………………………………………………………….173
3 TRANSMISSION…………………………………………………………………….174
MECHANISM CONTENTS……………………………………………………………..175
………………………………………………………………………….176
1.STRUCTURE ……………………………………………………………….177
………………………………………………………………………178
[1]SHUTTLE SHIFT SECTION (FORWARD-REVERSE) ……………………………..179
[2]MAIN GEAR SHIFT SECT ION ………………………………………….180
[3]HI-LO, CREEP SHIFT SECTION …………………………………………181
…………………………………………………………………..182
…………………………………………………………………..183
[4]FOUR WHEEL DRIVE SECTION (4WD ONLY) ……………………………….184
2.PTO SYSTEM………………………………………………………………185
[1]FIXED PTO SHAFT TYPE WITH SINGLE SPEED
(540 min-1 (rpm)) …………..185
[2]FIXED PTO SHAFT TYPE WITH TWO SPEEDS ……………………………..186
3.DIFFERENTIAL GEAR………………………………………………………..187
[1]STRUCTURE……………………………………………………………187
[2]OPERATION……………………………………………………………187
…………………………………………………………………..188
SERVICING CONTENTS……………………………………………………………..189
1.TROUBLESHOOTING ………………………………………………………….190
2.SERVICING SPECIFICATIONS………………………………………………….191
3.TIGHTENING TORQUES……………………………………………………….192
4.CHECKING, DISASSEMBLING AND SERVICING ……………………………………193
[1]CLUTCH HOUSINEG………………………………………………………193
(1)Disassembling and Assembling ………………………………………193
……………………………………………………………….194
……………………………………………………………….195
……………………………………………………………….196
……………………………………………………………….197
……………………………………………………………….198
……………………………………………………………….199
……………………………………………………………….200
……………………………………………………………….201
……………………………………………………………….202
……………………………………………………………….203
……………………………………………………………….204
……………………………………………………………….205
……………………………………………………………….206
(2)Servicing………………………………………………………..207
[2]TRANSMISSION CASE……………………………………………………208
(1)Disassembling and Assembling……………………………………….209
……………………………………………………………….210
……………………………………………………………….211
……………………………………………………………….212
……………………………………………………………….213
……………………………………………………………….214
……………………………………………………………….215
……………………………………………………………….216
……………………………………………………………….217
……………………………………………………………….218
(2)Servicing………………………………………………………..219
……………………………………………………………….220
……………………………………………………………….221
……………………………………………………………….222
……………………………………………………………….223
……………………………………………………………….224
4 REAR AXLE……………………………………………………………………….225
MECHANISM CONTENTS……………………………………………………………..226
1.FEATURES ………………………………………………………………..227
2.FINAL REDUCTION SYSTEM ………………………………………………….228
SERVICING CONTENTS……………………………………………………………..229
1.TROUBLESHOOTING ………………………………………………………….230
2.SERVICING SPECIFICATIONS …………………………………………………231
3.TIGHTENING TORQUES……………………………………………………….232
4.CHECKING, DISASSEMBLING AND SERVICING ……………………………………233
[1]DISASSEMBLING AND ASSEMBLING ………………………………………..233
(1)Separating Rear Axle Case from Transmission C………………………..233
……………………………………………………………….234
(2)Disassembling Planetary Gear……………………………………….235
(3)Disassembling Rear Axle……………………………………………235
[2]SERVICING……………………………………………………………236
…………………………………………………………………..237
5 BRAKES………………………………………………………………………….238
MECHANISM CONTENTS……………………………………………………………..239
1.FEATURES…………………………………………………………………240
………………………………………………………………………241
2.OPERATION ……………………………………………………………….242
SERVICING CONTENTS……………………………………………………………..243
1.TROUBLESHOOTING ………………………………………………………….244
2.SERVICING SPECIFICATIONS………………………………………………….245
3.TIGHTENING TORQUES ………………………………………………………246
4.CHECKING, DISASSEMBLING AND SERVICING ……………………………………247
[1]BRAKE PEDAL ………………………………………………………..247
(1)Checking and Adjusting ……………………………………………247
(2)Disassembling and Assembling……………………………………….248
(3)Servicing………………………………………………………..249
[2]BRAKE CASE ………………………………………………………..250
(1)Disassembling and Assembling……………………………………….250
……………………………………………………………….251
……………………………………………………………….252
(2)Servicing ……………………………………………………….253
……………………………………………………………….254
6 FRONT AXLE………………………………………………………………………255
MECHANISM CONTENTS……………………………………………………………..256
1.STRUCTURE………………………………………………………………..257
[1]2 WHEEL DRIVE TYPE ………………………………………………..257
[2]4 WHEEL DRIVE TYPE ………………………………………………..258
2.FRONT WHEEL ALIGNMENT …………………………………………………..259
………………………………………………………………………260
SERVICING CONTENTS……………………………………………………………..261
1.TROUBLESHOOTING ………………………………………………………….262
2.SERVICING SPECIFICATIONS ………………………………………………..263
………………………………………………………………………264
………………………………………………………………………265
3.TIGHTENING TORQUES ………………………………………………………266
4.CHECKING, DISASSEMBLING AND SERVICING…………………………………….267
[1]CHECKING AND ADJUSTING …………………………………………….267
…………………………………………………………………..268
[2]DISASSEMBLING AND ASSEMBLING ………………………………………..269
(1)Separating Front Axle (2WD Type) ………………………………….269
(2)Separating Front Axle (4WD Type) …………………………………..269
………………………………………………………………270
(3)Disassembling Front Axle (2WD Type) ……………………………….271
……………………………………………………………….272
(4)Disassembling Front Axle (4WD Type) ……………………………….273
……………………………………………………………….274
……………………………………………………………….275
……………………………………………………………….276
[3]SERVICING……………………………………………………………277
(1)2WD Type…………………………………………………………277
(2)4WD Type ………………………………………………………..278
……………………………………………………………….279
……………………………………………………………….280
……………………………………………………………….281
……………………………………………………………….282
………………………………………………………………283
7 SREERING………………………………………………………………………..284
MECHANISM CONTENTS……………………………………………………………..285
1.STEERING MECHANISM ………………………………………………………286
2.POWER STEERING HYDRAULIC CIRCUIT ……………………………………….287
3.POWER STEERING SYSTEM HYDRAULIC PUMP ……………………………………288
4.STEERING CONTROLLER………………………………………………………289
[1]CONTROL VALVE……………………………………………………….289
[2]METERING DEVICE (GEROTOR) ………………………………………….290
[3]OIL FLOW …………………………………………………………..291
…………………………………………………………………..292
…………………………………………………………………..293
…………………………………………………………………..294
5.STEERING CYLINDER………………………………………………………..295
SERVICING CONTENTS……………………………………………………………..296
1.TROUBLESHOOTING…………………………………………………………..297
2.SERVICING SPECIFICATIONS …………………………………………………298
…………………………………………………………………..299
3.TIGHTENING TORQUES……………………………………………………….300
4.CHECKING, DISASSEMBLING AND SERVICING…………………………………….301
[1]POWER STEERING HYDRAULIC PUMP……………………………………….301
(1)Checking…………………………………………………………301
……………………………………………………………….302
(2)Disassembling and Assembling ……………………………………..303
(3)Servicing ……………………………………………………….304
[2]STEERING CONTROLLER …………………………………………………305
(1)Checking and Adjusting…………………………………………….305
(2)Disassembling and Assembling……………………………………….306
……………………………………………………………….307
……………………………………………………………….308
[3]STEERING CYLINDER……………………………………………………309
(1)Disassembling and Assembling……………………………………….309
……………………………………………………………….310
……………………………………………………………….311
(2)Servicing ……………………………………………………….312
8 HYDRAULIC SYSTEM…………………………………………………………………313
MECHANISM CONTENTS……………………………………………………………..314
1.GENERAL HYDRAULIC CIRCUIT………………………………………………..315
2.THREE POINT HYDRAULIC SYSTEM …………………………………………..316
3.HYDRAULIC CIRCUIT FOR THREE POINT HYDRAULIC SYSTEM …………………….317
4.HYDRAULIC PUMP ………………………………………………………….318
5.OIL FILTER ……………………………………………………………..319
6.POSITION CONTROL VALVE…………………………………………………..320
………………………………………………………………………321
7.RELIEF VALVE ……………………………………………………………322
8.HYDRAULIC CYLINDER……………………………………………………….323
9.LINKAGE MECHANISM ……………………………………………………….324
[1]POSITION CONTROL ……………………………………………………324
…………………………………………………………………..325
[2]DRAFT CONTROL……………………………………………………….326
…………………………………………………………………..327
…………………………………………………………………..328
[3]MIXED CONTROL……………………………………………………….329
[4]CYLINDER SAFETY VALVE (SURGE RELIEF VALVE) …………………………330
10.AUXILIARY CONTROL VALVE ………………………………………………..331
[1]SINGLE / DOUBLE ACTING TYPE………………………………………..331
…………………………………………………………………..332
…………………………………………………………………..333
…………………………………………………………………..334
…………………………………………………………………..335
[2]SELF-CANCELLING WITH DETENT (STANDARD) ……………………………..336
…………………………………………………………………..337
…………………………………………………………………..338
…………………………………………………………………..339
…………………………………………………………………..340
[3]SELF-CANCELLING WITH DETENT (IF EQUIPPED) …………………………..341
…………………………………………………………………..342
…………………………………………………………………..343
…………………………………………………………………..344
…………………………………………………………………..345
[4]FLOATING WITH DETENT (IF EQUIPPED) ………………………………..346
…………………………………………………………………..347
…………………………………………………………………..348
…………………………………………………………………..349
[5]FLOW CONTROL VALVE (IF EQUIPPED) ………………………………….350
11.OIL COOLER RELIEF VALVE ………………………………………………351
SERVICING CONTENTS……………………………………………………………..352
1.TROUBLESHOOTING ………………………………………………………….353
2.SERVICING SPECIFICATIONS ………………………………………………..354
………………………………………………………………………355
3.TIGHTENING TORQUES……………………………………………………….356
4.CHECKING, DISASSEMBLING AND SERVICING…………………………………….357
[1]HYDRAULIC PUMP ……………………………………………………..357
…………………………………………………………………..358
(2)Disassembling and Assembling …………………………………………359
(3)Servicing …………………………………………………………..360
[2]POSITION CONTROL AND DRAFT CONTROL LINKAGE……………………………..361
(1)Checking and Adjusting………………………………………………..361
…………………………………………………………………..362
[3]RELIEF VALVE……………………………………………………………363
(1)Checking and Adjusting ……………………………………………….363
(2)Disassembling and Assembling …………………………………………364
[4]HYDRAULIC CYLINDER AND POSITION CONTROL VALVE…………………………….364
(1)Disassembling and Assembling…………………………………………..364
…………………………………………………………………..365
…………………………………………………………………..366
…………………………………………………………………..367
…………………………………………………………………..368
…………………………………………………………………..369
(2)Servicing …………………………………………………………..370
…………………………………………………………………..371
9 ELECTRICAL SYSTEM………………………………………………………………..372
MECHANISM CONTENTS……………………………………………………………..373
1.WIRING DIAGRAM ………………………………………………………….374
[1]ROPS TYPE…………………………………………………………..375
…………………………………………………………………..376
…………………………………………………………………..377
…………………………………………………………………..378
…………………………………………………………………..379
…………………………………………………………………..380
[2]CABIN TYPE …………………………………………………………381
…………………………………………………………………..382
…………………………………………………………………..383
…………………………………………………………………..384
…………………………………………………………………..385
…………………………………………………………………..386
…………………………………………………………………..387
…………………………………………………………………..388
…………………………………………………………………..389
…………………………………………………………………..390
…………………………………………………………………..391
…………………………………………………………………..392
…………………………………………………………………..393
…………………………………………………………………..394
…………………………………………………………………..395
…………………………………………………………………..396
…………………………………………………………………..397
…………………………………………………………………..398
…………………………………………………………………..399
…………………………………………………………………..400
…………………………………………………………………..401
…………………………………………………………………..402
…………………………………………………………………..403
…………………………………………………………………..404
2.STARTING SYSTEM …………………………………………………………405
………………………………………………………………………406
[1]GLOW RELAY………………………………………………………….407
[2]SAFETY SWITCH (SHUTTLE LEVER NEUTRAL SWITCH AND PTO LEVER SWITCH)….407
3.ENGINE KEY SWITCH SHUT-OFF SYSTEM……………………………………….408
[1]ENGINE STOP SOLENOID………………………………………………..408
4.CHARGING SYSTEM …………………………………………………………409
[1]IC REGULATOR………………………………………………………..410
[2]OPERATION OF CHARGING SYSTEM ………………………………………411
…………………………………………………………………..412
5.LIGHTING SYSTEM………………………………………………………….413
[1]ROPS TYPE…………………………………………………………..413
…………………………………………………………………..414
[2]CABIN TYPE………………………………………………………….415
…………………………………………………………………..416
6.EASY CHECKER…………………………………………………………….417
[1]ROPS TYPE…………………………………………………………..417
…………………………………………………………………..418
[2]CABIN TYPE …………………………………………………………419
…………………………………………………………………..420
[3]INDICATION ITEMS ……………………………………………………421
7.GAUGES ………………………………………………………………….422
[1]SENSOR………………………………………………………………423
[2]GAUGE……………………………………………………………….423
SERVICING CONTENTS……………………………………………………………..424
1.TROUBLESHOOTING ………………………………………………………….425
………………………………………………………………………426
………………………………………………………………………427
2.SERVICING SPECIFICATIONS………………………………………………….428
3.TIGHTENING TORQUES………………………………………………………..429
4.CHECKING, DISASSEMBLING AND SERVICING…………………………………….430
[1]BATTERY……………………………………………………………..430
(1)Checking ………………………………………………………..430
……………………………………………………………….431
(2)Servicing………………………………………………………..432
[2]STARTING SYSTEM……………………………………………………..433
(1)Checking ………………………………………………………..433
……………………………………………………………….434
……………………………………………………………….435
……………………………………………………………….436
……………………………………………………………….437
……………………………………………………………….438
(2)Disassembling and Assembling ……………………………………..439
(3)Servicing ……………………………………………………….440
……………………………………………………………….441
[3]ENGINE KEY SWITCH SHUT OF SYSTEM……………………………….442
(1)Checking……………………………………………………..442
[4]CHARGING SYSTEM………………………………………………….443
(1)Checking……………………………………………………..443
(2)Disassembling and Assembling ………………………………….444
……………………………………………………………445
(3)Servicing ……………………………………………………446
[5]LIGHTING SYSTEM …………………………………………………447
(1)Checking …………………………………………………….447
……………………………………………………………448
……………………………………………………………449
……………………………………………………………450
……………………………………………………………451
……………………………………………………………452
……………………………………………………………453
[6]WARNING LAMPS……………………………………………………454
(1)Checking……………………………………………………..454
[7]GAUGES…………………………………………………………..455
(1)Checking……………………………………………………..455
……………………………………………………………456
10 CABIN………………………………………………………………………….457
MECHANISM CONTENTS……………………………………………………………..458
1.AIR CONDITIONER SYSTEM…………………………………………………..459
[1]PRINCIPLES OF AIR CONDITIONER……………………………………….459
(1)Expansion and Evaporation………………………………………….459
(2)How to Condense Gaseous Refrigerant into Liquid………………………459
(3)Condensing Gaseous………………………………………………..460
(4)Refrigeration Cycle ………………………………………………460
[2]OUTLINE OF AIR CONDITIONING SYSTEM ………………………………..461
[3]REFRIGERATION SYSTEM…………………………………………………462
(1)Compressor……………………………………………………….463
……………………………………………………………….464
……………………………………………………………….465
……………………………………………………………….466
(2)Condenser………………………………………………………..467
(3)Receiver…………………………………………………………468
(4)Air Conditioner Unit ……………………………………………..468
……………………………………………………………….469
……………………………………………………………….470
(5)Refrigerant ……………………………………………………..471
……………………………………………………………….472
[4]SYSTEM CONTROL…………………………………………………..473
[5]ELECTRICAL SYSTEM………………………………………………..474
(1)Electrical Circuit…………………………………………….474
……………………………………………………………475
(2)Air Conditioner Main Relay and Compressor Relay…………………..476
(3)Blower Switch…………………………………………………476
(4)Pressure Switch ………………………………………………477
……………………………………………………………478
……………………………………………………………479
(5)Thermostat …………………………………………………..480
2.WINDSHIELD WIPER……………………………………………………..481
[1]FRONT WINDSHIELD WIPER…………………………………………..481
[2]REAR WINDSHIELD WIPER……………………………………………482
[3]WINDOW WASHER……………………………………………………482
SERVICING CONTENTS……………………………………………………………..483
1.TROUBLESHOOTING ………………………………………………………….484
………………………………………………………………………485
………………………………………………………………………486
………………………………………………………………………487
………………………………………………………………………488
2.SERVICING SPECIFICATIONS ………………………………………………..489
3.TIGHTENING TORQUES……………………………………………………….490
4.PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE ………………………………491
[1]HANDLING OF SERVICE TOOLS …………………………………………492
(1)Manifold Gauge Set………………………………………………..492
(2)Refrigerant Charging Hose ………………………………………..493
(3)Vacuum Pump Adaptor ………………………………………………494
(4)Electric Gas Leak Tester…………………………………………..494
(5)Can Tap Valve ……………………………………………………494
(6)T-joint………………………………………………………….495
(7)R134a Refrigerant Recovery and Recycling Machine……………………..495
5.CHECKING AND CHARGING REFRIGERANT CYCLE………………………………….496
[1]CHECKING WITH MANIFOLD GAUGE ……………………………………..496
…………………………………………………………………..497
…………………………………………………………………..498
…………………………………………………………………..499
[2]DISCHARGING EVACUATING AND CHARGING …………………………………500
…………………………………………………………………..501
(3)Charging the System…………………………………………………..502
…………………………………………………………………..503
(4)Checking Charge Refrigerant Amount ……………………………………504
6.CHECKING, DISASSEMBLING AND SERVICING…………………………………….505
[1]SEPARATING CABIN FROM TRACTOR BODY………………………………….505
(1)Disassembling and Assembling ……………………………………505
……………………………………………………………….506
……………………………………………………………….507
……………………………………………………………….508
……………………………………………………………….509
[2]COMPRESSOR…………………………………………………………..510
(1)Checking…………………………………………………………510
(2)Disassembling and Assembling ……………………………………..511
……………………………………………………………….512
……………………………………………………………….513
[3]AIR CONDITIONING SYSTEM AND FRONT WINDSHIELD WIPER …………………514
(1)Checking ………………………………………………………..514
……………………………………………………………….515
……………………………………………………………….516
……………………………………………………………….517
……………………………………………………………….518
[4]FRONT WINDSHIELD WIPER………………………………………………519
(1)Checking ………………………………………………………..519
(2)Disassembling and Assembling ……………………………………..520
……………………………………………………………….521
……………………………………………………………….522
……………………………………………………………….523
……………………………………………………………….524
(3)Servicing………………………………………………………..525
[5]LIGHTING SYSTEM……………………………………………………..526
(1)Checking…………………………………………………………526
[6]OTHERS………………………………………………………………526
(1)Checking…………………………………………………………526
(2)Disassembling and Assembling ……………………………………..527
……………………………………………………………….528
……………………………………………………………….529
……………………………………………………………….530

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KUBOTA M4900 • M5700 TRACTOR WORKSHOP MANUAL – PDF DOWNLOAD:

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