Kubota M100GX, M110GX, M126GX, M128GX, M128GX-FS, M135GX, and M135GX-FS Workshop Manual — 9Y111-20443

About this manual

Kubota published this Workshop Manual for the M100GX, M110GX, M126GX, M128GX, M128GX-FS, M135GX, and M135GX-FS tractor models. It brings the documented service and technical-reference material for those named tractors into a single publication.

Its documented technical value includes torque settings, wear limits, fluid and system capacities, dimensions, speed ratings, and emission data for service checks and specification lookup. Use the values and conditions stated in the PDF for the applicable model and procedure.

Use the Manual Contents below to check that the exact repair, inspection, or maintenance procedure you need is included in this publication.

Manual details

Manufacturer

Kubota

Manual type

Workshop Manual

Models

M100GX, M110GX, M126GX, M128GX, M128GX-FS, M135GX, and M135GX-FS

Document number

9Y111-20443

Language

English

Page count

1134

Product highlights

Electrical systems

The manual includes electrical troubleshooting.

Hydraulic systems

The manual includes hydraulic pressure-test material and hydraulic valve-adjustment material.

Diagnostics

The manual includes diagnostic trouble-code reference information.

Specifications and settings

The manual includes reference information for torque specifications, wear limits, capacities, dimensions, speed ratings, and emission specifications.

Special tools

A special-tools section is included.

Manual contents

Use these source headings to locate the task or system you need in the PDF.

• TO THE READER — p. 1
• I INFORMATION — p. 3
  • INFORMATION — p. 4
    • 1. SAFETY FIRST — p. 5
    • 2. SAFETY DECALS — p. 8
      • [1] DANGER, WARNING AND CAUTION LABELS — p. 8
        • (1) For North America Model — p. 8
        • (2) For Oceania Model — p. 14
      • [2] PICTORIAL SAFETY LABELS — p. 20
        • (1) For Europe Model — p. 20
    • 3. SPECIFICATIONS — p. 25
      • [1] FOR NORTH AMERICA MODEL — p. 25
      • [2] FOR EUROPE MODEL — p. 26
      • [3] FOR OCEANIA MODEL — p. 30
    • 4. TRAVELING SPEEDS — p. 31
      • [1] FOR NORTH AMERICA MODEL — p. 31
      • [2] FOR EUROPE MODEL — p. 32
      • [3] FOR OCEANIA MODEL — p. 33
    • 5. DIMENSIONS — p. 34
      • [1] FOR NORTH AMERICA MODEL — p. 34
      • [2] FOR EUROPE MODEL — p. 35
      • [3] FOR OCEANIA MODEL — p. 36
• G GENERAL — p. 37
  • GENERAL — p. 38
    • 1. TRACTOR IDENTIFICATION — p. 40
      • [1] MODEL NAME AND SERIAL NUMBER — p. 40
      • [2] CYLINDER NUMBER — p. 41
    • 2. GENERAL PRECAUTIONS — p. 42
    • 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING — p. 43
      • [1] WIRING — p. 43
      • [2] BATTERY — p. 45
      • [3] FUSE — p. 45
      • [4] CONNECTOR — p. 45
      • [5] HANDLING OF CIRCUIT TESTER — p. 46
      • [6] COLOR OF WIRING — p. 47
    • 4. LUBRICANTS, FUEL AND COOLANT — p. 48
    • 5. TIGHTENING TORQUES — p. 50
      • [1] GENERAL USE SCREWS, BOLTS AND NUTS — p. 50
      • [2] STUD BOLTS — p. 50
      • [3] HYDRAULIC FITTINGS — p. 51
        • (1) Hydraulic Hose Fittings — p. 51
        • (2) Hydraulic Pipe Cap Nuts — p. 51
        • (3) Adaptors, Elbows and Nuts — p. 51
    • 6. MAINTENANCE FOR NORTH AMERICA, OCEANIA — p. 52
    • 7. CHECK AND MAINTENANCE FOR NORTH AMERICA, OCEANIA — p. 55
      • [1] DAILY CHECK — p. 55
      • [2] CHECK POINTS OF INITIAL 50 HOURS — p. 56
      • [3] CHECK POINTS OF EVERY 50 HOURS — p. 59
      • [4] CHECK POINTS OF EVERY 100 HOURS — p. 62
      • [5] CHECK POINTS OF EVERY 200 HOURS — p. 71
      • [6] CHECK POINTS OF EVERY 300 HOURS — p. 76
      • [7] CHECK POINTS OF EVERY 400 HOURS — p. 76
      • [8] CHECK POINTS OF EVERY 600 HOURS — p. 80
      • [9] CHECK POINTS OF EVERY 800 HOURS — p. 82
      • [10] CHECK POINT OF EVERY 1500 HOURS — p. 83
      • [11] CHECK POINTS OF EVERY 3000 HOURS — p. 86
      • [12] CHECK POINTS OF EVERY 1 YEAR — p. 86
      • [13] CHECK POINTS OF EVERY 2 YEARS — p. 88
      • [14] OTHERS — p. 93
    • 8. MAINTENANCE FOR EUROPE — p. 100
    • 9. CHECK AND MAINTENANCE FOR EUROPE — p. 103
      • [1] DAILY CHECK — p. 103
      • [2] CHECK POINTS OF INITIAL 50 HOURS — p. 104
      • [3] CHECK POINTS OF EVERY 50 HOURS — p. 107
      • [4] CHECK POINTS OF EVERY 100 HOURS — p. 110
      • [5] CHECK POINTS OF EVERY 200 HOURS — p. 119
      • [6] CHECK POINTS OF EVERY 400 HOURS — p. 124
      • [7] CHECK POINTS OF EVERY 500 HOURS — p. 128
      • [8] CHECK POINTS OF EVERY 600 HOURS — p. 129
      • [9] CHECK POINTS OF EVERY 1000 HOURS — p. 130
      • [10] CHECK POINT OF EVERY 1500 HOURS — p. 132
      • [11] CHECK POINTS OF EVERY 3000 HOURS — p. 134
      • [12] CHECK POINTS OF EVERY 1 YEAR — p. 134
      • [13] CHECK POINTS OF EVERY 2 YEARS — p. 136
      • [14] OTHERS — p. 141
    • 10. SPECIAL TOOLS — p. 148
      • [1] SPECIAL TOOLS FOR ENGINE — p. 148
        • (1) Both V3800(-CR)-TI and V6108(-CR)-TI — p. 148
        • (2) For V3800(-CR)-TI — p. 150
        • (3) For V6108(-CR)-TI — p. 163
      • [2] SPECIAL TOOLS FOR TRACTOR — p. 171
        • (1) Tractor Body — p. 171
        • (2) Air Conditioner — p. 186
        • (3) Front Suspension (If Equipped) — p. 188
    • 11. TIRES — p. 194
      • [1] SIZE OF TIRES AND INFLATION PRESSURE — p. 194
      • [2] WHEEL ADJUSTMENT — p. 196
        • (1) Front Wheel — p. 197
        • (2) Rear Wheel — p. 201
      • [3] TIRE LIQUID INJECTION — p. 205
    • 12. IMPLEMENT LIMITATIONS — p. 209
      • [1] TRACTOR CONDITION — p. 209
        • (1) North America Model — p. 209
        • (2) Europe Model — p. 209
        • (3) Oceania Model — p. 209
      • [2] LIMITATIONS — p. 210
        • (1) Actual Figures — p. 210
        • (2) Implement Capacity — p. 211
        • (3) Trailer Load Capacity (For Europe Model Only) — p. 213
        • (4) Type of Drawbar and Hitch — p. 216
• 1 ENGINE — p. 218
  • MECHANISM — p. 219
    • 1. FEATURE — p. 220
    • 2. ENGINE BODY — p. 221
      • [1] CYLINDER BLOCK — p. 221
        • (1) V3800-TIE4 — p. 221
        • (2) V6108-TIE4 — p. 222
      • [2] CENTER DIRECT INJECTION SYSTEM (E-CDIS) — p. 223
      • [3] PISTON — p. 223
      • [4] BALANCER — p. 223
    • 3. LUBRICATING SYSTEM — p. 224
      • [1] OIL COOLER — p. 224
      • [2] OIL SEPARATOR (IF EQUIPPED) — p. 224
    • 4. COOLING SYSTEM — p. 225
      • [1] THERMOSTAT — p. 225
        • (1) V6108-TIE4 — p. 225
      • [2] BOTTOM BYPASS SYSTEM — p. 227
      • [3] VISCOUS COUPLING FAN (V6108-TIE4) — p. 228
    • 5. INTAKE AND EXHAUST SYSTEM — p. 230
    • 6. COMMON RAIL SYSTEM (CRS) — p. 231
      • [1] GENERAL — p. 231
      • [2] SUPPLY PUMP — p. 233
      • [3] COMMON RAIL — p. 236
      • [4] INJECTOR — p. 237
      • [5] ENGINE CONTROL SYSTEM — p. 240
        • (1) Engine Control System Diagram — p. 240
        • (2) Engine ECU (Electronic Control Unit) — p. 241
        • (3) Sensors — p. 242
    • 7. EXHAUST GAS RECIRCULATION (EGR) SYSTEM — p. 248
      • [1] GENERAL — p. 248
      • [2] EGR VALVE — p. 249
      • [3] REED VALVE — p. 250
    • 8. AFTER TREATMENT SYSTEM — p. 251
      • [1] CONTROL SYSTEM DIAGRAM — p. 251
      • [2] COMPONENTS — p. 252
      • [3] DPF REGENERATION SYSTEM (INHIBIT VERSION) — p. 256
        • (1) Regeneration Mode (Inhibit Version) — p. 256
        • (2) Indicator and Switch Lamp (Inhibit Version) — p. 257
        • (3) PM Warning Level (Inhibit Version) — p. 259
      • [4] DPF REGENERATION SYSTEM (Default Version) — p. 261
        • (1) Regeneration Mode (Default Version) — p. 261
        • (2) Indicator and Switch Lamp (Default Version) — p. 262
        • (3) PM Warning Level (Default Version) — p. 264
  • SERVICING — p. 266
    • 1. V3800 ENGINE (FOR M100GX, M110GX) — p. 268
      • [1] TROUBLESHOOTING — p. 268
      • [2] SERVICING SPECIFICATIONS — p. 272
      • [3] TIGHTENING TORQUES — p. 277
      • [4] CHECKING AND ADJUSTING — p. 279
        • (1) Engine Body — p. 279
        • (2) Lubricating System — p. 282
        • (3) Cooling System — p. 282
        • (4) Electrical System — p. 284
        • (5) Turbocharger — p. 284
      • [5] DISASSEMBLING AND ASSEMBLING — p. 285
        • (1) DPF Muffler — p. 285
        • (2) Separating Engine from Clutch Housing — p. 289
        • (3) Separating Engine from Front Axle Frame — p. 297
        • (4) External Components — p. 297
        • (5) Turbocharger and EGR — p. 298
        • (6) Common Rail — p. 299
        • (7) Cylinder Head and Valves — p. 303
        • (8) Thermostat — p. 309
        • (9) Supply Pump — p. 310
        • (10) Water Pump and Oil Cooler — p. 312
        • (11) Gear Case and Timing Gear — p. 313
        • (12) Piston and Connecting Rod — p. 318
        • (13) Flywheel and Crankshaft — p. 321
        • (14) Intake Air Heater — p. 324
      • [6] SERVICING — p. 324
        • (1) Cylinder Head — p. 324
        • (2) Timing Gears — p. 330
        • (3) Piston and Connecting Rod — p. 333
        • (4) Crankshaft — p. 336
        • (5) Cylinder — p. 339
        • (6) Oil Pump — p. 340
    • 2. V6108 ENGINE (FOR M126GX, M128GX, M135GX) — p. 341
      • [1] TROUBLESHOOTING — p. 341
      • [2] SERVICING SPECIFICATIONS — p. 345
      • [3] TIGHTENING TORQUES — p. 350
      • [4] CHECKING AND ADJUSTING — p. 352
        • (1) Engine Body — p. 352
        • (2) Lubricating System — p. 354
        • (3) Cooling System — p. 355
        • (4) Turbocharger — p. 356
      • [5] DISASSEMBLING AND ASSEMBLING — p. 357
        • (1) DPF Muffler — p. 357
        • (2) Separating Engine from Clutch Housing — p. 362
        • (3) Separating Engine from Front Axle Frame — p. 373
        • (4) External Components — p. 374
        • (5) Turbocharger — p. 374
        • (6) Exhaust Gas Recirculation (EGR) — p. 375
        • (7) Common Rail System (CRS) — p. 376
        • (8) Cylinder Head and Valves — p. 379
        • (9) Thermostat — p. 387
        • (10) Water Pump and Oil Cooler — p. 387
        • (11) Front Cover — p. 388
        • (12) Flywheel and Flywheel Housing — p. 390
        • (13) Piston and Connecting Rod — p. 396
        • (14) Crankshaft and Crankcase — p. 399
        • (15) Timing Gear — p. 400
      • [6] SERVICING — p. 401
        • (1) Cylinder Head and Valves — p. 401
        • (2) Timing Gears — p. 407
        • (3) Piston and Connecting Rod — p. 413
        • (4) Crankshaft — p. 417
        • (5) Cylinder — p. 420
        • (6) Oil Pump — p. 421
• 2 TRANSMISSION — p. 422
  • MECHANISM — p. 423
    • 1. STRUCTURE — p. 424
      • [1] M100GX, M110GX (NORTH AMERICA MODEL) — p. 424
      • [2] M126GX, M135GX (NORTH AMERICA MODEL) — p. 425
      • [3] M100GX, M110GX (EUROPE MODEL) / M100GX, M110GX (OCEANIA MODEL) — p. 426
      • [4] M128GX, M135GX (EUROPE MODEL) / M126GX, M135GX (OCEANIA MODEL) — p. 427
    • 2. POWER TRAIN — p. 429
      • [1] MASTER CLUTCH (F-R) SECTION — p. 429
      • [2] MAIN SHIFT "1" TO "4" SECTION — p. 429
      • [3] MAIN SHIFT "H" AND "L" SECTION — p. 430
      • [4] RANGE SHIFT SECTION — p. 430
      • [5] 2WD / 4WD / BI-SPEED TURN SECTION — p. 431
      • [6] PTO GEAR SECTION (PTO SHAFT CHANGE TYPE) — p. 432
      • [7] PTO GEAR SECTION (SHIFT LEVER TYPE) — p. 432
    • 3. POWER SHIFT SYSTEM — p. 433
      • [1] CONSTRUCTION AND FUNCTION OF COMPONENTS — p. 433
        • (1) Electric Components — p. 433
        • (2) Hydraulic Components — p. 438
      • [2] ELECTRIC CONTROL SYSTEM — p. 441
        • (1) Control System — p. 441
        • (2) Master Clutch Control — p. 443
        • (3) Power Shift Control — p. 444
      • [3] AUTO SPEED CONTROL — p. 445
        • (1) Travel Mode — p. 445
        • (2) Field Mode — p. 447
      • [4] OTHER CONTROL — p. 449
        • (1) Down-hill Control — p. 449
        • (2) Shuttle Control — p. 449
        • (3) Auxiliary Control — p. 449
      • [5] HYDRAULIC CONTROL — p. 450
        • (1) Hydraulic Circuit — p. 450
    • 4. CLUTCH SAFETY VALVE — p. 452
    • 5. REGULATOR VALVE — p. 454
    • 6. POWER SHIFT VALVE — p. 455
    • 7. PTO CLUTCH — p. 458
  • SERVICING — p. 460
    • 1. TROUBLESHOOTING — p. 462
      • [1] POWER SHIFT SYSTEM — p. 462
      • [2] TRANSMISSION AND DIFFERENTIAL GEAR — p. 463
      • [3] HYDRAULIC CLUTCH — p. 464
    • 2. SERVICING SPECIFICATIONS — p. 467
    • 3. TIGHTENING TORQUES — p. 470
    • 4. CHECKING AND ADJUSTING — p. 472
      • [1] REGULATOR VALVE — p. 472
      • [2] HYDRAULIC CLUTCH FOR POWER SHIFT — p. 474
      • [3] PTO CLUTCH — p. 479
      • [4] CLUTCH SAFETY VALVE — p. 479
    • 5. DISASSEMBLING AND ASSEMBLING — p. 480
      • [1] DAMPER DISK — p. 480
        • (1) Separating Engine and Clutch Housing — p. 480
        • (2) Removing Damper Disk — p. 480
      • [2] CLUTCH HOUSING — p. 480
        • (1) Draining Transmission Fluid — p. 480
        • (2) Separating Cabin from Tractor — p. 480
        • (3) Fuel Tank — p. 481
        • (4) Wire Harnesses — p. 482
        • (5) Hydraulic Pipes and Hoses — p. 483
        • (6) Pump Gear Case — p. 484
        • (7) Propeller Shaft — p. 485
        • (8) Separating Clutch Housing and Mid Case — p. 486
        • (9) Separating Clutch Housing and Engine — p. 486
        • (10) Clutch Housing — p. 487
      • [3] MID CASE AND TRANSMISSION CASE — p. 501
        • (1) Draining Transmission Fluid — p. 501
        • (2) Separating Cabin from Tractor — p. 501
        • (3) Fuel Tank — p. 501
        • (4) Wire Harnesses — p. 501
        • (5) Hydraulic Pipes and Hoses — p. 502
        • (6) Pump Gear Case — p. 502
        • (7) Range Gear Shift Cable and Range Gear Case — p. 503
        • (8) Separating Clutch Housing and Mid Case — p. 503
        • (9) Separating Mid Case and Transmission Case — p. 504
        • (10) Mid Case — p. 505
        • (11) Transmission Case — p. 508
      • [4] POWER SHIFT VALVE — p. 519
      • [5] REGULATOR VALVE — p. 525
      • [6] CLUTCH SAFETY VALVE — p. 526
      • [7] PTO CLUTCH VALVE — p. 527
      • [8] RANGE GEAR CASE — p. 528
      • [9] HYDRAULIC PUMP GEAR CASE — p. 529
      • [10] PARKING BRAKE CASE — p. 530
      • [11] REAR PTO CASE — p. 530
    • 6. SERVICING — p. 533
      • [1] DAMPER DISK — p. 533
      • [2] BEARING, SHIFT FORK AND SYNCHRONIZER — p. 533
      • [3] MASTER CLUTCH — p. 534
      • [4] MAIN SHIFT CLUTCH AND 4WD / BI-SPEED CLUTCH — p. 535
      • [5] PTO CLUTCH — p. 538
      • [6] DIFFERENTIAL GEAR — p. 540
• 3 REAR AXLE — p. 545
  • MECHANISM — p. 546
    • 1. STRUCTURE — p. 547
  • SERVICING — p. 549
    • 1. TROUBLESHOOTING — p. 550
    • 2. SERVICING SPECIFICATIONS — p. 551
    • 3. TIGHTENING TORQUES — p. 552
    • 4. CHECKING, DISASSEMBLING AND SERVICING — p. 553
      • [1] PREPARATION — p. 553
        • (1) Separating Rear Axle Case from Transmission Case — p. 553
      • [2] DISASSEMBLING AND ASSEMBLING — p. 555
        • (1) Rear Axle Case — p. 555
      • [3] SERVICING — p. 556
• 4 BRAKES — p. 558
  • MECHANISM — p. 559
    • 1. TRAVELING BRAKE — p. 560
      • [1] STRUCTURE — p. 560
      • [2] MASTER CYLINDER ASSEMBLY — p. 561
    • 2. TRAILER BRAKE (IF EQUIPPED) — p. 562
      • [1] STRUCTURE — p. 562
    • 3. HYDRAULIC TRAILER BRAKE VALVE — p. 563
      • [1] STRUCTURE — p. 563
      • [2] OPERATION — p. 564
  • SERVICING — p. 568
    • 1. TROUBLESHOOTING — p. 569
    • 2. SERVICING SPECIFICATIONS — p. 570
    • 3. TIGHTENING TORQUES — p. 571
    • 4. CHECKING, DISASSEMBLING AND SERVICING — p. 572
      • [1] CHECKING AND ADJUSTING — p. 572
      • [2] DISASSEMBLING AND ASSEMBLING — p. 576
        • (1) Brake Pedal — p. 576
        • (2) Removing Master Cylinder — p. 577
        • (3) Master Cylinder — p. 578
        • (4) Removing Trailer Brake Valve (If Equipped) — p. 579
        • (5) Brake Case — p. 579
        • (6) Removing Parking Brake Case — p. 579
        • (7) Parking Brake — p. 580
      • [3] SERVICING — p. 581
• 5 FRONT AXLE — p. 583
  • MECHANISM — p. 584
    • 1. STRUCTURE — p. 585
      • [1] STANDARD TYPE — p. 585
        • (1) M100GX, M110GX — p. 585
        • (2) M126GX, M128GX, M135GX — p. 586
      • [2] FRONT SUSPENSION TYPE — p. 587
        • (1) Front Axle — p. 587
        • (2) Front Suspension — p. 588
    • 2. FRONT SUSPENSION SYSTEM (FRONT SUSPENSION MODEL) — p. 589
      • [1] OUT LINE OF FRONT SUSPENSION — p. 589
      • [2] FRONT SUSPENSION CONTROL — p. 590
      • [3] HYDRAULIC SYSTEM — p. 595
        • (1) Out Line of Hydraulic Component Parts — p. 595
        • (2) Hydraulic Circuit — p. 596
      • [4] ELECTRIC SYSTEM — p. 598
        • (1) Out Line of Electric Component — p. 598
        • (2) System Chart — p. 599
        • (3) System Chart CAN-BAS — p. 600
      • [5] COMPONENT PARTS FOR FRONT SUSPENSION — p. 601
        • (1) Components for Hydraulic Parts — p. 601
        • (2) Component Parts for Electric — p. 618
  • SERVICING — p. 620
    • 1. TROUBLESHOOTING — p. 621
      • [1] STANDARD TYPE — p. 621
      • [2] FRONT SUSPENSION TYPE — p. 622
    • 2. SERVICING SPECIFICATIONS — p. 624
      • [1] STANDARD TYPE — p. 624
      • [2] FRONT SUSPENSION TYPE — p. 626
        • (1) Front Axle — p. 626
        • (2) Suspension Valve — p. 627
        • (3) Accumulator Nitrogen Gas — p. 627
        • (4) Electric Parts — p. 627
    • 3. TIGHTENING TORQUES — p. 628
      • [1] FRONT AXLE — p. 628
      • [2] FRONT SUSPENSION COMPORNENT PARTS — p. 629
    • 4. CHECKING AND ADJUSTING — p. 630
      • [1] ALL TYPE — p. 630
      • [2] FRONT SUSPENSION TYPE — p. 632
        • (1) Pilot Pressure — p. 632
        • (2) Regulator Valve Setting Pressure — p. 633
        • (3) Suspension Valve Setting Pressure — p. 634
        • (4) Accumulator Gas Pressure — p. 640
        • (5) Electric Parts — p. 646
    • 5. DISASSEMBLING AND SERVICING — p. 648
      • [1] PREPARATION — p. 648
        • (1) Draining Lubricants — p. 648
      • [2] SEPARATING FRONT AXLE — p. 649
        • (1) Standard Type — p. 649
        • (2) Front Suspension Type — p. 653
        • (3) Bevel Gear Case Assembly — p. 658
        • (4) Front Differential Assembly — p. 662
        • (5) Front Suspension Component Parts — p. 668
        • (6) Suspension Valve — p. 670
        • (7) Suspension Cylinder — p. 677
      • [3] SERVICING — p. 680
        • (1) Standard Type — p. 680
        • (2) Front Suspension Type — p. 687
• 6 STEERING — p. 690
  • MECHANISM — p. 691
    • 1. STRUCTURE — p. 692
      • [1] STEERING MECHANISM — p. 692
  • SERVICING — p. 693
    • 1. TROUBLESHOOTING — p. 694
    • 2. SERVICING SPECIFICATIONS — p. 696
    • 3. TIGHTENING TORQUES — p. 697
    • 4. CHECKING, DISASSEMBLING AND SERVICING — p. 698
      • [1] CHECKING AND ADJUSTING — p. 698
        • (1) Power Steering — p. 698
      • [2] DISASSEMBLING AND ASSEMBLING — p. 699
        • (1) Removing Steering Controller — p. 699
        • (2) Steering Controller — p. 700
        • (3) Removing Steering Cylinder — p. 703
        • (4) Power Steering Cylinder — p. 704
        • (5) Steering Tilt Damper — p. 704
      • [3] SERVICING — p. 705
        • (1) Power Steering Cylinder — p. 705
• 7 HYDRAULIC SYSTEM — p. 706
  • MECHANISM — p. 707
    • 1. HYDRAULIC CIRCUIT — p. 708
      • [1] STANDARD TYPE — p. 708
      • [2] FRONT SUSPENSION TYPE — p. 709
    • 2. STRUCTURE — p. 710
      • [1] STANDARD TYPE — p. 710
      • [2] FRONT SUSPENSION TYPE — p. 711
    • 3. OUTLINE OF HYDRAULIC SYSTEM — p. 712
      • [1] STANDARD TYPE — p. 712
      • [2] FRONT SUSPENSION TYPE — p. 713
    • 4. AUXILIARY CONTROL VALVE — p. 714
      • [1] TYPE A (WITH FLOW CONTROL FUNCTION) — p. 714
        • (1) SCD (Self Canceling Detent) Valve — p. 714
        • (2) FD (Floating Detent) Valve — p. 721
        • (3) Inlet Valve — p. 727
      • [2] TYPE B (WITH OPTIONAL FLOW CONTROL VALVE) — p. 731
        • (1) SCD (Self Canceling Detent) Valve — p. 731
        • (2) FD (Floating Detent) Valve — p. 736
        • (3) Optional Flow Control Valve — p. 740
        • (4) Alternative SCD (Self Canceling Detent) Valve With Optional Flow Control Valve — p. 741
    • 5. 3-POINT HITCH SYSTEM — p. 746
      • [1] HYDRAULIC CIRCUIT — p. 746
      • [2] UNLOAD VALVE — p. 747
      • [3] CONTROL VALVE — p. 748
        • (1) 3-P Control Valve — p. 748
        • (2) Operation — p. 749
    • 6. 3-POINT HITCH CONTROL SYSTEM — p. 753
      • [1] SYSTEM OUTLINE — p. 753
        • (1) Position Control — p. 755
        • (2) Mixed Draft Control — p. 755
        • (3) 3-Point Hitch Quick Raise / Lower Control — p. 755
        • (4) Lift Arm Top Limit Adjustment Control — p. 756
        • (5) 3-Point Hitch Lowering Speed Control — p. 756
      • [2] ELECTRIC COMPONENTS — p. 757
        • (1) Control Panel and Arm Rest — p. 757
        • (2) 3-Point Hitch Control Unit (ECU) — p. 757
        • (3) Lift Arm Sensor and Draft Sensor — p. 757
      • [3] HYDRAULIC COMPONENTS — p. 758
  • SERVICING — p. 759
    • 1. TROUBLESHOOTING — p. 760
    • 2. SERVICING SPECIFICATIONS — p. 762
      • [1] POWER STEERING — p. 762
      • [2] 3-POINT HYDRAULIC SYSTEM — p. 763
    • 3. TIGHTENING TORQUES — p. 764
    • 4. CHECKING, DISASSEMBLING AND SERVICING — p. 765
      • [1] CHECKING AND ADJUSTING — p. 765
        • (1) Hydraulic Pump for Power Steering — p. 765
        • (2) Hydraulic Pump for 3-Point Hitch — p. 767
        • (3) 3-Point Hitch System — p. 769
        • (4) Auxiliary Control Valve Linkage — p. 770
      • [2] DISASSEMBLING AND ASSEMBLING — p. 772
        • (1) Hydraulic Pump (for 3-Point Hitch) — p. 772
        • (2) Top Cover (3-Point Hitch Hydraulic Block) — p. 773
        • (3) Lift Arm and Lift Arm Shaft — p. 777
        • (4) Control Valve — p. 778
        • (5) Valve Assembly — p. 780
        • (6) Hydraulic Cylinder — p. 783
        • (7) Draft Sensor Bar and Draft Link 1 — p. 785
      • [3] SERVICING — p. 787
        • (1) Lift Arm — p. 787
        • (2) Draft Sensor Bar — p. 788
• 8 ELECTRICAL SYSTEM — p. 789
  • MECHANISM — p. 790
    • 1. ELECTRICAL CIRCUIT — p. 792
      • [1] ENGINE START, CHARGING, ENGINE STOP AND POWER (NORTH AMERICA MODEL M100GX, M110GX) — p. 792
      • [2] ENGINE START, CHARGING, ENGINE STOP AND POWER (NORTH AMERICA MODEL M126GX, M135GX) — p. 793
      • [3] ENGINE START, CHARGING, ENGINE STOP AND POWER (EUROPE MODEL M100GX, M110GX / OCEANIA MODEL M100GX, M110GX) — p. 794
      • [4] ENGINE START, CHARGING, ENGINE STOP AND POWER (EUROPE MODEL M128GX, M135GX / OCEANIA MODEL M126GX, M135GX) — p. 795
      • [5] ENGINE CONTROL AND CAN CIRCUIT (M100GX, M110GX) — p. 796
      • [6] ENGINE CONTROL AND CAN CIRCUIT (M126GX, M128GX, M135GX) — p. 797
      • [7] LIGHTING AND WORK LIGHT (NORTH AMERICA MODEL) — p. 798
      • [8] LIGHTING AND WORK LIGHT (EUROPE MODEL / OCEANIA MODEL) — p. 799
      • [9] INSTRUMENT PANEL — p. 800
      • [10] MAIN ECU — p. 801
      • [11] SIDE DIGITAL DISPLAY, DEFOGGER, AUDIO AND WIPER — p. 802
      • [12] SUB ECU AND FRONT SUSPENSION — p. 803
      • [13] AIR CONDITIONER AND ACCESSORY — p. 804
    • 2. CONNECTORS — p. 805
      • [1] MAIN WIRE HARNESS — p. 805
      • [2] EXCEPT FOR MAIN WIRE HARNESS — p. 806
    • 3. LOCATION OF ELECTRIC COMPONENTS — p. 807
      • [1] CRS WIRE HARNESS (M100GX, M110GX) — p. 807
      • [2] CRS WIRE HARNESS (M126GX, M128GX, M135GX) — p. 808
      • [3] ENGINE WIRE HARNESS (M100GX, M110GX) — p. 809
      • [4] ENGINE WIRE HARNESS (M126GX, M128GX, M135GX) — p. 810
      • [5] MAIN WIRE HARNESS 1 — p. 811
      • [6] MAIN WIRE HARNESS 2 — p. 812
      • [7] MAIN WIRE HARNESS 3 — p. 813
      • [8] BODY WIRE HARNESS AND 3P WIRE HARNESS — p. 814
      • [9] HEAD LAMP WIRE HARNESS AND CABIN WIRE HARNESS — p. 815
      • [10] FRONT SUSPENSION WIRE HARNESS — p. 816
    • 4. RELAY BOX AND FUSE BOX — p. 817
      • [1] RELAY BOX — p. 817
      • [2] FUSE BOX — p. 817
    • 5. POWER SHIFT CONTROL SYSTEM, 3-POINT HITCH CONTROL SYSTEM AND FRONT SUSPENSION CONTROL SYSTEM — p. 818
      • [1] POWER SHIFT CONTROL SYSTEM — p. 818
      • [2] 3-POINT HITCH CONTROL SYSTEM — p. 818
      • [3] FRONT SUSPENSION CONTROL SYSTEM — p. 818
    • 6. STARTING SYSTEM — p. 819
      • [1] SYSTEM OUTLINE AND ELECTRICAL CIRCUIT — p. 819
      • [2] PTC HEATER (POSITIVE TEMPERATURE COEFFICIENT) — p. 820
        • (1) System Outline — p. 820
    • 7. OPC (OPERATOR PRESENCE CONTROL) — p. 824
      • [1] SYSTEM OUTLINE AND ELECTRICAL CIRCUIT — p. 824
    • 8. METER PANEL — p. 825
      • [1] EASY CHECKER™ — p. 825
    • 9. SIDE DIGITAL DISPLAY — p. 827
    • 10. CAN (CONTROLLER AREA NETWORK) COMMUNICATION — p. 832
  • SERVICING — p. 833
    • 1. TROUBLESHOOTING — p. 836
    • 2. SERVICING SPECIFICATIONS — p. 842
    • 3. TIGHTENING TORQUES — p. 845
    • 4. CHECKING AND ADJUSTING — p. 846
      • [1] CHECKING AND ADJUSTING BY INSTRUMENT PANEL — p. 846
        • (1) DTC (Diagnostic Trouble Code) — p. 846
        • (2) Menu and Mode Selection — p. 853
        • (3) Menu "SHI" (for Power Shift System) — p. 858
        • (4) Menu "HIT" (for 3-point Hitch System) — p. 890
        • (5) Menu "SUS" (for Front Suspension System) — p. 897
        • (6) Menu "CHK" (Easy Checking, Checking DTC History and Clearing DTC History) — p. 903
      • [2] BATTERY — p. 909
      • [3] FUSE, GROUNDING AND CONNECTOR — p. 912
      • [4] ECU, INSTRUMENT PANEL AND SIDE DIGITAL DISPLAY — p. 916
        • (1) Main ECU — p. 916
        • (2) Sub ECU — p. 919
        • (3) Engine ECU — p. 920
        • (4) Front Suspension ECU (Front Suspension Type Only) — p. 924
        • (5) Instrument Panel — p. 926
        • (6) Side Digital Display — p. 927
      • [5] STARTING SYSTEM — p. 928
        • (1) Main Key Switch — p. 928
        • (2) Safety Switch — p. 930
        • (3) Starter — p. 931
        • (4) Starter Relay — p. 933
        • (5) PTO Relay — p. 934
        • (6) Intake Air Heater (M100GX, M110GX) — p. 935
        • (7) Heater Relay 1 (M100GX, M110GX) — p. 936
        • (8) Heater Relay 2 (M100GX, M110GX) — p. 937
        • (9) Glow Plug (M126GX, M128GX, M135GX) — p. 938
        • (10) Glow Relay (M126GX, M128GX, M135GX) — p. 939
      • [6] ENGINE CONTROL SYSTEM — p. 940
        • (1) Injector — p. 940
        • (2) SCV (Suction Control Valve) — p. 941
        • (3) Rail Pressure Sensor — p. 942
        • (4) Fuel Temperature Sensor — p. 943
        • (5) Fuel Pump — p. 944
        • (6) Boost Sensor — p. 945
        • (7) Intake Air Temperature Sensor — p. 946
        • (8) EGR Valve — p. 947
        • (9) Crankshaft Position Sensor — p. 948
        • (10) Camshaft Position Sensor — p. 949
        • (11) Air Flow Sensor — p. 950
        • (12) Intake Throttle Valve — p. 951
        • (13) Exhaust Temperature Sensor — p. 952
        • (14) Differential Pressure Sensor — p. 953
        • (15) CRS Power Relay — p. 954
        • (16) Foot Throttle Sensor — p. 955
        • (17) Hand Throttle Lever Sensor — p. 956
        • (18) Emission Indicator (If Equipped) — p. 957
        • (19) Parked Regeneration Switch — p. 958
        • (20) Auto Regeneration Switch — p. 959
        • (21) Rev-limiter Control Dial — p. 960
        • (22) RPM Dual Memory Switch — p. 961
        • (23) Constant RPM Management Switch — p. 962
      • [7] CHARGING SYSTEM — p. 963
        • (1) Alternator — p. 963
      • [8] DRIVING SYSTEM — p. 964
        • (1) Clutch Pedal Sensor — p. 964
        • (2) Power Shift / Range Shift Lever Sensor — p. 965
        • (3) Shuttle Switch — p. 966
        • (4) Traveling Speed Sensor — p. 967
        • (5) Shuttle Rotation Sensor — p. 968
        • (6) Solenoid (Main Shift 1 to 4, Master F, R, Differential Lock F, R, 4WD, and Bi-speed) — p. 969
        • (7) Solenoid Proportional Pressure Reducing Valve (Master Clutch, Main Shift L and H) — p. 971
        • (8) Pressure Switch — p. 971
        • (9) Transmission Oil Temperature Sensor — p. 973
        • (10) Creep Switch (If Equipped) — p. 974
        • (11) Shift Button and Clutch Button (on the Power Shift / Range Shift Lever) — p. 975
        • (12) Shift Button (on the Arm Rest) — p. 976
        • (13) Auto-Mode Switch — p. 977
        • (14) Auto-Mode Sensitivity Adjustment Dial — p. 978
        • (15) DHC Switch — p. 979
        • (16) Front Wheel Turning Angle Switch — p. 980
        • (17) 4WD / Bi-speed Turn Switch — p. 981
        • (18) Front Wheel Differential Lock Switch — p. 982
        • (19) Rear Wheel Differential Lock Switch — p. 983
        • (20) Changing Auto-mode Setting — p. 984
      • [9] PTO SYSTEM — p. 987
        • (1) PTO Switch — p. 987
        • (2) PTO Valve Solenoid — p. 988
      • [10] 3 POINT HITCH SYSTEM — p. 989
        • (1) Hydraulic Control Lever Sensor — p. 989
        • (2) Lift Arm Sensor — p. 990
        • (3) Draft Sensor — p. 991
        • (4) Solenoid Valve for Lifting and Lowering — p. 992
        • (5) Solenoid Valve for Unload — p. 993
        • (6) Draft Ratio Adjustment Dial, Lift Arm Top Limit Adjustment Dial and 3-point Hitch Lowering Speed Adjustment Dial — p. 994
        • (7) Mode Selector Switch — p. 996
        • (8) 3-P. Quick Raise / Lower Switch — p. 997
        • (9) Remote Hitch Up / Down Switch — p. 998
      • [11] FRONT SUSPENSION SYSTEM (FRONT SUSPENSION TYPE ONLY) — p. 999
        • (1) Stroke Sensor — p. 999
        • (2) Pressure Sensor — p. 1000
        • (3) Suspension Solenoid — p. 1001
        • (4) Suspension Switch — p. 1002
        • (5) Ride Condition Damper Switch — p. 1003
      • [12] LIGHTING SYSTEM — p. 1004
        • (1) Combination Switch (North America Model) — p. 1004
        • (2) Combination Switch (Europe Model / Oceania Model) — p. 1005
        • (3) Flasher Unit (North America Model) — p. 1006
        • (4) Flasher Unit (Europe Model / Oceania Model) — p. 1007
        • (5) Turn Signal Relay, Tail Lamp Relay, Work Light Relay and ACC Relay (North America Model) — p. 1008
        • (6) Tail Lamp Relay, Work Light Relay and ACC Relay (Europe Model / Oceania Model) — p. 1010
        • (7) Hazard Switch (North America Model) — p. 1011
        • (8) Hazard Switch (Europe Model / Oceania Model) — p. 1012
        • (9) Work Light Switch — p. 1013
        • (10) Beacon Switch (If Equipped) — p. 1014
        • (11) Room Lamp — p. 1015
        • (12) Door Switch — p. 1016
      • [13] WARNING LAMP, INDICATOR LAMP AND GAUGE — p. 1017
        • (1) Engine Oil Pressure Switch — p. 1017
        • (2) Coolant Temperature Sensor — p. 1018
        • (3) Air Cleaner Switch — p. 1019
        • (4) Fuel Sensor — p. 1020
        • (5) Parking Brake Switch — p. 1021
      • [14] OTHERS — p. 1022
        • (1) Display Switch — p. 1022
        • (2) Auxiliary Power Relay — p. 1023
        • (3) B2 Power Relay — p. 1024
    • 5. DISASSEMBLING AND ASSEMBLING — p. 1025
      • [1] STARTER MOTOR — p. 1025
      • [2] ALTERNATOR — p. 1026
    • 6. SERVICING — p. 1028
      • [1] STARTER — p. 1028
      • [2] ALTERNATOR — p. 1030
• 9 CABIN — p. 1032
  • MECHANISM — p. 1033
    • 1. AIR CONDITIONING SYSTEM — p. 1034
      • [1] STRUCTURE — p. 1034
      • [2] COMPRESSOR — p. 1036
      • [3] AIR CONDITIONER UNIT — p. 1037
      • [4] SYSTEM CONTROL — p. 1038
      • [5] AIR FLOW — p. 1039
      • [6] AIR CONTROL VENT — p. 1039
      • [7] ELECTRICAL SYSTEM — p. 1040
        • (1) Electrical Circuit — p. 1040
        • (2) Blower Relay and Compressor Relay — p. 1041
        • (3) Blower Switch — p. 1042
    • 2. AIR SUSPENSION SEAT SYSTEM — p. 1043
      • [1] DIMENSIONS — p. 1043
      • [2] STRUCTURE — p. 1044
      • [3] HEIGHT LEVEL CONTROL — p. 1045
      • [4] HORIZONTAL SPRING UNIT — p. 1047
      • [5] COMPRESSOR — p. 1048
      • [6] ELECTRICAL SYSTEM — p. 1049
  • SERVICING — p. 1050
    • 1. TROUBLESHOOTING — p. 1052
    • 2. SERVICING SPECIFICATIONS — p. 1058
    • 3. TIGHTENING TORQUES — p. 1059
    • 4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE — p. 1060
      • [1] HANDLING OF SERVICE TOOLS — p. 1062
        • (1) Manifold Gauge Set — p. 1062
        • (2) Refrigerant Charging Hose — p. 1063
        • (3) Vacuum Pump Adaptor — p. 1064
        • (4) Electric Gas Leak Tester — p. 1064
        • (5) Can Tap Valve — p. 1064
        • (6) T-joint — p. 1065
        • (7) R134a Refrigerant Recovery and Recycling Machine — p. 1065
    • 5. CHECKING AND CHARGING REFRIGERANT CYCLE — p. 1066
      • [1] CHECKING WITH MANIFOLD GAUGE — p. 1066
      • [2] DISCHARGING, EVACUATING AND CHARGING — p. 1070
        • (1) Discharging the Refrigerant — p. 1070
        • (2) Evacuating the System — p. 1071
        • (3) Charging the Refrigerant — p. 1072
        • (4) Checking Charge Refrigerant Amount — p. 1074
    • 6. CHECKING AND ADJUSTING — p. 1075
      • [1] AIR CONDITIONING SYSTEM — p. 1075
        • (1) Air Conditioning System Operating Condition — p. 1075
        • (2) Compressor — p. 1076
        • (3) Compressor Relay and Blower Relay — p. 1077
        • (4) Control Panel (Blower Switch, A/C Switch, Mode Control Dial, Temperature Control Dial and Recirculation/Fresh Air Selection Switch) — p. 1078
        • (5) Blower Resistor — p. 1081
        • (6) Blower Motor — p. 1081
        • (7) Temperature Motor — p. 1082
        • (8) Mode Motor — p. 1082
        • (9) Recirculation/Fresh Air Motor — p. 1083
        • (10) Pressure Switch — p. 1084
      • [2] WIPER AND WIPER MOTOR — p. 1085
        • (1) Front Wiper Switch — p. 1085
        • (2) Rear Wiper Switch — p. 1086
        • (3) Front Wiper Motor (3P connector type) — p. 1087
        • (4) Front Wiper Motor (4P connector type) — p. 1088
        • (5) Front Wiper Relay — p. 1089
        • (6) Rear Wiper Motor — p. 1090
        • (7) Washer Tank Motor — p. 1091
      • [3] AIR SUSPENSION SEAT — p. 1092
        • (1) Compressor — p. 1092
        • (2) Cam Switch — p. 1093
        • (3) Outlet Valve — p. 1093
        • (4) Bowden Pull Wire — p. 1094
    • 7. DISASSEMBLING AND ASSEMBLING — p. 1095
      • [1] SEPARATING CABIN FROM TRACTOR — p. 1095
        • (1) Preparation (For All Model) — p. 1095
        • (2) Air Conditioner, Wiring Harness, Heater Hose and Hydraulic Hose (M100GX, M110GX) — p. 1097
        • (3) Air Conditioner, Wiring Harness, Heater Hose and Hydraulic Hose (M126GX, M128GX, M135GX) — p. 1101
        • (4) Dismounting the Cabin (For All Model) — p. 1105
      • [2] REMOVING CABIN ROOF — p. 1110
        • (1) Cabin Outer Roof — p. 1110
      • [3] AIR CONDITIONING SYSTEM — p. 1111
        • (1) Compressor — p. 1111
        • (2) Removing Air Conditioner Unit — p. 1113
        • (3) Removing Air Conditioner Pipes — p. 1118
        • (4) Removing Heater Hoses — p. 1120
      • [4] CABIN — p. 1121
        • (1) Cabin Windshields — p. 1121
        • (2) Wiper Motor — p. 1123
        • (3) Air Suspension Seat — p. 1123
        • (4) Disassembling the Seat — p. 1124
        • (5) Shock Absorbers — p. 1125
        • (6) Pneumatic Spring — p. 1126
        • (7) Height Level Control Unit — p. 1127
    • 8. SERVICING — p. 1128
      • [1] AIR CONDITIONING SYSTEM — p. 1128
        • (1) Compressor — p. 1128
• ELECTRIC CIRCUIT — p. 1129

Capabilities

The source outline separates mechanism explanations from servicing instructions for Engine, Transmission, Rear Axle, Brakes, Front Axle, Steering, Hydraulic System, Electrical System, and Cabin. Use these indexed headings to locate the applicable system in the source PDF, then confirm model-specific notes, specifications, illustrations, and operating conditions at the relevant page before carrying out service work.

Keep the source's safety sequence, prerequisite steps, labels, units, configuration notes, and footnotes with the selected task; do not apply an isolated value outside the conditions stated in the manual.

Technical reference

Reference tables include torque settings, wear limits, fluid and system capacities, dimensions, speed ratings, and emission data for service checks, adjustment work, and specification lookup. Use the values and conditions in the PDF for the applicable model and procedure.

• Service limits and settings: torque settings and wear limits.
• Fluid reference: fluid and system capacities.
• Machine specifications: dimensions and speed ratings.
• Electrical and emissions: emission data.

Delivery

This manual is supplied as a digital PDF file and is available for instant download after purchase. No physical media is shipped.

References

Kubota Workshop Manual for Tractor, document code 9Y111-20443, PDF edition.