Description
File Details
- Manual Type: Workshop Manual
- Brand: Kubota
- Model: M105S
- Document Number: 97897-13350
- Language: English
- File Format: PDF
What This Manual Covers
The Kubota M105S Workshop Manual (97897-13350) is a comprehensive technical service document covering every major system of the M105S tractor. Whether you are diagnosing a fault, performing a scheduled overhaul, or rebuilding a component from scratch, this manual provides the procedures, specifications, and data required to do the job correctly.
Chapters and Systems Covered
- General – Safety, specifications overview, and general information
- Engine – Disassembly, inspection, reassembly, and performance data for the Kubota diesel engine
- Clutch – Single and dual clutch construction, removal, adjustment, and reassembly
- Transmission – Gear train layout, shuttle shift mechanism, disassembly and reassembly procedures
- Front Axle – Front axle assembly, differential, steering knuckle, and hub service
- Rear Axle – Final drive, rear differential, planetary reduction, and bearing service
- PTO – Independent PTO system, shaft, clutch pack, and engagement mechanism
- Brake System – Wet disc brakes, pedal adjustment, bleeding, and inspection
- Hydraulic System – Hydraulic pump, control valves, three-point hitch, remote cylinders, and circuit pressures
- Electrical System – Wiring diagrams, battery, alternator, starter motor, switches, sensors, and gauges
- Steering System – Power steering pump, cylinder, and circuit data
This workshop manual for the Kubota M105S is structured for technicians working through complete teardowns as well as for owners tackling targeted repairs. Each chapter leads with component identification, moves through removal and disassembly sequences, provides all measurable tolerances and torque values, and closes with reassembly and adjustment procedures. The hydraulic and electrical sections include circuit diagrams that allow systematic fault isolation without guesswork.
Engine and Powertrain Detail
The engine chapter covers the Kubota diesel unit fitted to the M105S in full — cylinder head removal and valve reconditioning, piston and liner measurement, crankshaft and bearing clearance checks, injection pump timing, and governor adjustment. Precise bore, stroke, and clearance data is tabulated so worn components can be measured against factory limits rather than estimated. The transmission section addresses the full gear train and shuttle mechanism, with exploded views showing the relationship between shafts and synchronizers.
Hydraulic and Electrical Systems
Hydraulic coverage in the Kubota M105S Workshop Manual extends from pump output pressure testing through the three-point hitch control valve and lift cylinder. Flow and pressure specifications give a baseline for diagnosing sluggish or non-functional lifting. The electrical section provides complete wiring diagrams, making it possible to trace any circuit — charging, starting, instrumentation, or auxiliary — without referring to a separate document.
Complete PDF Bookmark Tree
Complete Bookmarks
The complete bookmarks in the “Kubota M105S Workshop Manual – Tractor Service & Repair Guide PDF Download” are as follows:
+CONTENTSp. 2
TO THE READERp. 3
SAFETY INSTRUCTIONSp. 4
SPECIFICATIONSp. 11
TRAVELING SPEEDSp. 13
DIMENSIONSp. 15
+GENERALp. 16
1. TRACTOR IDENTIFICATIONp. 17
2. GENERAL PRECAUTIONSp. 18
+3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRINGp. 19
[1] WIRINGp. 19
[2] BATTERYp. 21
[3] FUSEp. 21
[4] CONNECTORp. 22
[5] HANDLING OF CIRCUIT TESTERp. 23
4. LUBRICANTS, FUEL AND COOLANTp. 24
+5. TIGHTENING TORQUESp. 26
[1] GENERAL USE SCREWS, BOLT AND NUTSp. 26
[2] STUD BOLTSp. 26
[3] HYDRAULIC FITTINGSp. 27
6. MAINTENANCEp. 28
+7. CHECK AND MAINTENANCEp. 30
[1] DAILY CHECKp. 30
[2] CHECK POINT OF INITIAL 50 HOURSp. 31
[3] CHECK POINTS OF EVERY 50 HOURSp. 34
[4] CHECK POINTS OF EVERY 100 HOURSp. 35
[5] CHECK POINTS OF EVERY 200 HOURSp. 41
[6] CHECK POINTS OF EVERY 300 HOURSp. 45
[7] CHECK POINTS OF EVERY 400 HOURSp. 46
[8] CHECK POINTS OF EVERY 600 HOURSp. 46
[9] CHECK POINTS OF EVERY 800 HOURSp. 49
[10] CHECK POINTS OF EVERY 1 YEARp. 49
[11] CHECK POINTS OF EVERY 2 YEARSp. 50
[12] OTHERSp. 54
+8. SPECIAL TOOLSp. 59
[1] SPECIAL TOOLS FOR ENGINEp. 59
[2] SPECIAL TOOLS FOR TRACTORp. 76
+9. TIRESp. 90
[1] TYPE OF TIRESp. 90
+[2] TREAD ADJUSTMENTp. 90
(1) Front Wheelp. 90
(2) Rear Wheelp. 92
[3] WHEEL HUBp. 93
[4] TIRE PRESSUREp. 93
[5] TIRE LIQUID INJECTIONp. 94
10. IMPLEMENT LIMITATIONSp. 98
+1 ENGINE (MECHANISM)p. 101
1. FEATUREp. 102
+2. ENGINE BODYp. 103
[1] CYLINDER BLOCKp. 103
[2] HALF-FLOATING HEAD COVERp. 103
[3] CYLINDER HEADp. 104
[4] CENTER DIRECT INJECTION SYSTEM (E-CDIS)p. 104
[5] PISTONp. 105
[6] BUILT-IN DYNAMIC BALANCERp. 105
+3. LUBRICATING SYSTEMp. 106
+4. COOLING SYSTEMp. 107
[1] THERMOSTATp. 107
[2] BOTTOM BYPASS SYSTEMp. 108
+5. FUEL SYSTEMp. 109
[1] GOVERNORp. 109
[2] 2-STAGE DI NOZZLEp. 112
[3] INJECTION PUMP WITH F.S.P.p. 113
[4] AUTOMATIC TIMERp. 114
+6. INTAKE SYSTEMp. 115
[1] INTAKE AIR HEATERp. 115
+7. TURBOCHARGER SYSTEMp. 116
[1] BOOST COMPENSATORp. 116
+1 ENGINE (SERVICING)p. 117
1. TROUBLESHOOTINGp. 118
2. SERVICING SPECIFICATIONSp. 122
3. TIGHTENING TORQUESp. 128
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 129
+[1] CHECKING AND ADJUSTINGp. 129
(1) Engine Bodyp. 129
(2) Lubricating Systemp. 131
(3) Cooling Systemp. 132
(4) Fuel Systemp. 134
+[2] DISASSEMBLING AND ASSEMBLINGp. 136
(1) Separating Front Axle Support as a Unitp. 136
(2) Separating Engine from Clutch Housingp. 140
(3) Removing External Componentsp. 142
(4) Turbochargerp. 143
(5) Cylinder Head and Valvesp. 145
(6) Thermostatp. 149
(7) Injection Pump Unitp. 150
(8) Water Pump and Oil Coolerp. 162
(9) Gear Casep. 163
(10) Piston and Connecting Rodp. 165
(11) Flywheel and Crankshaftp. 169
+[3] SERVICINGp. 172
(1) Cylinder Headp. 172
(2) Idle Gear and Camshaftp. 178
(3) Piston and Connecting Rodp. 182
(4) Crankshaftp. 185
(5) Cylinderp. 189
(6) Oil Pumpp. 190
+2 CLUTCH (MECHANISM)p. 191
+1. TRAVELING CLUTCHp. 192
[1] STRUCTUREp. 192
[2] OIL FLOWp. 193
+2. PTO CLUTCHp. 194
[1] STRUCTUREp. 194
[2] OIL FLOWp. 195
+2 CLUTCH (SERVICING)p. 196
1. TROUBLESHOOTINGp. 197
2. SERVICING SPECIFICATIONp. 198
3. TIGHTENING TORQUESp. 199
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 200
+[1] CHECKING AND ADJUSTINGp. 200
(1) Traveling Clutchp. 200
(2) PTO Clutchp. 202
+[2] DISASSEMBLING AND ASSEMBLINGp. 203
(1) Removing Damper Discp. 203
(2) Removing Shuttle Clutch Valvep. 209
(3) Removing PTO Clutch Valvep. 210
(4) PTO Clutch Packp. 212
+[3] SERVICINGp. 218
(1) Damper Discp. 218
(2) PTO Clutchp. 218
+3 TRANSMISSION (MECHANISM)p. 220
1. STRUCTUREp. 221
+2. GEAR SHIFT MECHANISMp. 222
[1] SELECTING THE TRAVELING SPEEDp. 222
[2] MAIN GEAR SHIFT LEVERp. 223
[3] SWING SHIFTp. 225
[4] DUAL SPEEDp. 228
+3. POWER TRAIN FOR TRAVELING GEARp. 229
[1] SHUTTLE SHIFT SECTIONp. 229
[2] MAIN GEAR SHIFT AND SWING SHIFT (LO-HI) SECTIONp. 230
[3] DUAL SPEED SECTIOINp. 231
[4] RANGE GEAR SHIFT SECTIONp. 231
[5] FOUR-WHEEL DRIVE SECTIONp. 232
+4. POWER TRAIN FOR PTO SYSTEMp. 233
[1] PTO GEAR SECTIONp. 233
+3 TRANSMISSION (SERVICING)p. 234
1. TROUBLESHOOTINGp. 235
2. SERVICING SPECIFICATIONSp. 237
3. TIGHTENING TORQUESp. 239
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 240
+[1] CHECKING AND ADJUSTINGp. 240
(1) Shuttle Leverp. 240
(2) Main Gear Shift Leverp. 246
(3) Range Gear Shift Leverp. 247
+[2] DISASSEMBLING AND ASSEMBLINGp. 248
(1) Separating Each Block (Clutch Housing Case and Transmission)p. 248
(2) Disassembling Shuttle Casep. 254
(3) Disassembling Speed Change Coverp. 257
(4) Disassembling Clutch Housingp. 260
(5) Disassembling Mid Case (Dual Speed Clutch)p. 262
(6) Disassembling HI-LO Shift Case (Creep Gear Case)p. 264
(7) Disassembling PTO Gear Casep. 265
(8) Disassembling Differential Gearp. 266
(9) Disassembling Rear Drive Shaft (Parking Brake Shaft)p. 271
+[3] SERVICINGp. 272
(1) Bearing, Shift Fork and Synchronizerp. 272
(2) Shuttle Clutchp. 273
(3) Thrust Clearance on Shaftp. 274
(4) Dual Speed Clutchp. 275
(5) Differential Gearp. 276
+4 REAR AXLE (MECHANISM)p. 282
+4 REAR AXLE (SERVICING)p. 284
1. TROUBLESHOOTINGp. 285
2. SERVICING SPECIFICATIONSp. 286
3. TIGHTENING TORQUESp. 287
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 288
+[1] DISASSEMBLING AND ASSEMBLINGp. 288
(1) Separating Rear Axle Case from Transmissionp. 288
(2) Disassembling Rear Axle Casep. 291
[2] SERVICINGp. 293
+5 BRAKES (MECHANISM)p. 294
+1. FEATUREp. 295
[1] TRAVELING AND PARKING BRAKEp. 295
+5 BRAKES (SERVICING)p. 296
1. TROUBLESHOOTINGp. 297
2. SERVICING SPECIFICATIONSp. 298
3. TIGHTENING TORQUESp. 300
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 301
[1] CHECKING AND ADJUSTINGp. 301
+[2] DISASSEMBLING AND ASSEMBLINGp. 306
(1) Removing Brake Pedalp. 306
(2) Removing Master Cylinder and Equalizerp. 307
(3) Removing Brake Casep. 309
(4) Removing Parking Brake Casep. 312
[3] SERVICINGp. 314
+6 FRONT AXLE (MECHANISM)p. 316
+1. STRUCTUREp. 317
[1] 4-WHEEL DRIVE TYPEp. 318
+6 FRONT AXLE (SERVICING)p. 319
1. TROUBLESHOOTINGp. 320
2. SERVICING SPECIFICATIONSp. 321
3. TIGHTENING TORQUESp. 323
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 324
[1] CHECKING AND ADJUSTINGp. 324
+[2] DISASSEMBLING AND ASSEMBLINGp. 326
(1) Separating Front Axlep. 326
(2) Disassembling Front Axlep. 330
[3] SERVICINGp. 337
+7 STEERING (MECHANISM)p. 343
+1. STRUCTUREp. 344
[1] STEERING MECHANISMp. 344
+7 STEERING (SERVICING)p. 345
1. TROUBLESHOOTINGp. 346
2. TIGHTENING TORQUESp. 347
+3. CHECKING, DISASSEMBLING AND SERVICINGp. 348
[1] CHECKING AND ADJUSTINGp. 348
+[2] DISASSEMBLING AND ASSEMBLINGp. 348
(1) Removing Steering Controllerp. 348
(2) Removing Steering Cylinderp. 349
+8 HYDRAULIC SYSTEM (MECHANISM)p. 350
1. STRUCTUREp. 351
2. HYDRUALIC CIRCUITp. 353
+3. HYDRAULIC SHUTTLE VALVEp. 354
[1] STRUCTUREp. 354
[2] OPERATIONp. 356
+4. REGULATOR VALVEp. 366
[1] STRUCTURE AND OIL FLOWp. 366
5. PTO CLUCHp. 368
6. DUAL SPEED VALVEp. 369
+7. HYDRAULIC TRAILER BRAKEp. 370
[1] HYDRAULIC CIRCUITp. 370
[2] TRAILER BRAKE VALVEp. 371
[3] OPERATIONp. 372
8. POWER STEERING HYDRAULIC CIRCUITp. 376
+9. THREE-POINT HYDRAULIC SYSTEMp. 377
[1] HYDRAULIC CIRCUITp. 377
[2] CONTROL VALVEp. 378
[3] POSITION CONTROLp. 380
[4] DRAFT CONTROLp. 381
[5] MIXED CONTROLp. 382
+8 HYDRAULIC SYSTEM (SERVICING)p. 383
1. TROUBLESHOOTINGp. 384
2. SERVICING SPECIFICATIONSp. 386
3. TIGHTENING TORQUESp. 389
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 390
+[1] CHECKING AND ADJUSTINGp. 390
(1) Hydraulic Pump for Power Steeringp. 390
(2) Hydraulic Pump for Three-Point Hitchp. 392
(3) Hydraulic Shuttle System Operating Pressurep. 394
(4) PTO Clutch Operating Pressurep. 395
(5) Dual Speed Operating Pressurep. 396
(6) Trailer Brake Operating Pressurep. 397
(7) Power Steering Operating Pressurep. 398
(8) Three-Point Hitch System (Relief Valve and Safety Valve) Operating Systemp. 400
(9) Three-Point Hitch Control Linkagep. 402
(10) Auxiliary Control Valve Wirep. 406
+[2] DISASSEMBLING AND ASSEMBLINGp. 407
(1) Hydraulic Pump (Power Steering and Three-Point Hitch)p. 407
(2) Steering Controller Assemblyp. 409
(3) Steering Cylinderp. 411
(4) Relief Valve for Three-Point Hitchp. 412
(5) Safety Valve for Three-Point Hitchp. 412
(6) Separating Three-Point Hitch Cylinder ASsemblyp. 413
(7) Control Valve for Three-Point Hitchp. 413
(8) Control Valve Linkagep. 415
(9) Cylinder Assemblyp. 416
+[3] SERVICINGp. 418
(1) Hydraulic Pumpp. 418
(2) Power Steering Cylinderp. 418
(3) Three-Point Hitch Cylinderp. 418
+9 ELECTRICAL SYSTEM (MECHANISM)p. 420
+1. WIRING DIAGRAMp. 421
[1] MAIN HARNESSp. 421
[2] CABIN HARNESSp. 422
[3] ENGINE AND HEAD LAMP HARNESSp. 423
[4] WIRING COLORp. 424
+2. ELECTRICAL CIRCUIT DETAILED CHARTp. 425
[1] FUSE, FUSIBLE LINK AND SLOW-BLOW FUSEp. 425
[2] STARTING SYSTEM AND CHARGING SYSTEMp. 426
[3] SWING SHIFT AND DUAL SPEEDp. 427
[4] LIGHTING SYSTEMp. 428
[5] INSTRUMENT PANEL BOARDp. 429
[6] WORKING LIGHT, RADIO AND DEFOGGER (OPTION)p. 430
[7] WIPERp. 431
[8] AIR CONDITIONERp. 432
+3. STARTING SYSTEMp. 433
+[1] SYSTEM OUTLINE AND ELECTRICAL CIRCUITp. 433
+[2] COMPONENTSp. 434
(1) Air Heaterp. 434
(2) Air Heater Timerp. 435
(3) Air Heater Relayp. 435
+4. CHARGING SYSTEMp. 436
[1] ELECTRICAL CIRCUITp. 436
+5. LIGHTING SYSTEMp. 437
[1] ELECTRICAL CIRCUITp. 437
+[2] COMPONENTSp. 438
+6. EASY CHECKERp. 439
[1] INDICATION ITEMSp. 439
[2] ELECTRICAL CIRCUITp. 440
+9 ELECTRICAL SYSTEM (SERVICING)p. 441
1. TROUBLESHOOTINGp. 442
2. SERVICING SPECIFICATIONSp. 448
3. TIGHTENING TORQUESp. 449
+4. CHECKING, DISASSEMBLING AND SERVICINGp. 450
+[1] CHECKING AND ADJUSTINGp. 450
(1) Batteryp. 450
(2) Main Switchp. 452
(3) Air Heater Relayp. 454
(4) Air Heater Timerp. 455
(5) Air Heaterp. 455
(6) Starter Relayp. 457
(7) Starter Motorp. 458
(8) Relays (Code No. 3F740-75030) [PTO Clutch Safety, Key Stop, Work Light, Aux. Power, A/C Compressor and A/C]p. 459
(9) Engine Stop Solenoidp. 460
(10) Safety Start Systemp. 461
(11) Swing Shiftp. 462
(12) Dual Speedp. 466
(13) Alternatorp. 468
(14) Lighting Combination Switchp. 469
(15) Hazard Switchp. 471
(16) Flasher Unitp. 472
(17) Work Light Switchp. 473
(18) Panel Boardp. 473
(19) Easy Checkerp. 477
(20) Parking Brake Switchp. 478
(21) Brake Oil Switchp. 479
(22) Fuel Limit Sensorp. 479
(23) Fuel Level Sensorp. 480
(24) Coolant Temperature Sensorp. 481
+[2] DISASSEMBLING AND ASSEMBLINGp. 481
(1) Starterp. 481
(2) Alternatorp. 482
+[3] SERVICINGp. 484
(1) Starterp. 484
(2) Alternatorp. 486
+10 CABIN (MECHANISM)p. 489
+1. AIR CONDITIONING SYSTEMp. 490
[1] STRUCTUREp. 490
[2] AIR FLOWp. 492
[3] AIR CONTROL VENTp. 492
[4] CONTROL PANELp. 494
[5] OPERATIONp. 495
+[6] ELECTRICAL SYSTEMp. 498
(1) Electrical Circuitp. 498
(2) Air Conditioner Main Relay and Compressor Relayp. 499
(3) Blower Switchp. 500
+10 CABIN (SERVICING)p. 502
1. TROUBLESHOOTINGp. 503
2. SERVICING SPECIFICATIONSp. 509
3. TIGHTENING TORQUESp. 510
+4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLEp. 511
+[1] HANDLING OF SERVICE TOOLSp. 512
(1) Manifold Gauge Setp. 512
(2) Refrigerant Charging Hosep. 514
(3) Vacuum Pump Adaptorp. 515
(4) Electric Gas Leak Testerp. 515
(5) Can Tap Valvep. 516
(6) T-jointp. 516
(7) R134a Refrigerant Recover and Recycling Machinep. 516
+5. CHECKING AND CHARGING REFRIGERANT CYCLEp. 517
[1] CHECKING WITH MANIFOLD GAUGEp. 517
+[2] DISCHARGING EVACUATING AND CHARGINGp. 521
(1) Discharging the Refrigerantp. 521
(2) Evacuating the Systemp. 522
(3) Charging the Refrigerantp. 523
(4) Checking Charge Refrigerant Amountp. 525
+6. CHECKING, DISASSEMBLING AND SERVICINGp. 526
+[1] CHECKING AND ADJUSTINGp. 526
(1) Compressorp. 526
(2) Air Conditioner Unitp. 527
(3) Blower Switchp. 528
(4) Blower Motorp. 529
(5) Blower Resistorp. 529
(6) A/C Switchp. 530
(7) Mode Switchp. 531
(8) Temperature Control Dialp. 531
(9) Temperature Motorp. 532
(10) Mode Motorp. 532
(11) A/C Pressure Switchp. 533
(12) Front Wiper Switchp. 534
(13) Wiper Motor Relayp. 536
(14) Front Wiper Motorp. 536
+[2] DISASSEMBLING AND ASSEMBLINGp. 537
(1) Separating Cabin from Tractorp. 537
(2) Removing Compressor Assemblyp. 544
(3) Removing Air Conditioner Unitp. 547
(4) Removing Air Conditioner Pipesp. 547
(5) Removing Heater Hosesp. 549
(6) Cab Windshieldp. 551
(7) Wiper Motorp. 552
[3] SERVICINGp. 553
Specifications and Service Data
Torque specifications, service clearances, fluid capacities, belt tensions, and maintenance intervals are distributed through the relevant chapters rather than buried in a single appendix, keeping the values close to the procedures they govern. Kubota M105S tractor owners and shop technicians will find the data specific to this model, not shared across a broad model family.
Get the Right Information — Download Today
This Kubota M105S Workshop Manual PDF gives you the technical depth to properly service, repair, and overhaul your machine rather than relying on approximation. Correct torque values protect threads and gaskets. Accurate pressure specs prevent hydraulic damage. Proper reassembly sequences avoid repeat failures. With this manual, every procedure is backed by Kubota’s own engineering data for the M105S. The file downloads instantly after purchase — no shipping delay, no waiting. Open it on any device — laptop, tablet, or phone — or print any section you need at the bench. One purchase gives you permanent access to a full Kubota M105S tractor service and repair guide whenever you need it.
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