Kubota Workshop Manual
Kubota L3301, L3901, and L4701 Workshop Manual
Document number 9Y111-10123 · English PDF edition · 662 pages
About this manual
Kubota published this Workshop Manual for the L3301, L3901, and L4701 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, 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.
Record of Revisions
For PDF, use the search function (Search word) to find all revised locations.
This manual includes revisions issued in September 2016, September 2018, and August 2019.
Revision History
Revision 1 — September 2016
- Maintenance interval was introduced. Reference pages: G-15 to G-77.
- CCV heater equipped model was introduced.
- Assembling and disassembling process in ENGINE was revised and some wiring diagrams, electrical circuit and components were added in ELECTRICAL SYSTEM.
- Reference pages: 1-S1, 1-S16, 1-S29, 1-S31, 1-S36, 2-S8, 2-S10, 2-S15, 2-S17, 2-S28, 3-S30, 3-S63, 9-M1, 9-M2, 9-S16, 9-S17, 9-S55.
Revision 2 — September 2018
- Added the (3) Glow Control (Old Model). Reference page: 9-M13.
- Added the (4) Glow Control (New Model). Reference page: 9-M13.
Revision 3 — August 2019
- Added tightening torque of the engine and clutch housing mounting bolts and nuts for L3301 and L3901. Reference pages: 2-S4, 2-S20, 3-S66.
- Changed the topic of “No-load test”. Reference page: 9-S35.
Manual details
- Manufacturer
- Kubota
- Manual type
- Workshop Manual
- Models
- L3301, L3901, and L4701
- Document number
- 9Y111-10123
- Language
- English
- Page count
- 662
Product highlights
Electrical systems
The manual includes wiring diagrams and electrical troubleshooting.
Hydraulic systems
The manual includes 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, 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] L3301/L3901 — p. 8
- [2] L4701 — p. 11
- 3. SPECIFICATIONS — p. 14
- [1] L3301/L3901 — p. 14
- [2] L4701 — p. 16
- 4. TRAVELING SPEEDS — p. 17
- [1] L3301/L3901 — p. 17
- [2] L4701 — p. 18
- 5. DIMENSIONS — p. 19
- [1] L3301/L3901 — p. 19
- [2] L4701 — p. 20
- INFORMATION — p. 4
- G GENERAL — p. 21
- GENERAL — p. 22
- 1. TRACTOR IDENTIFICATION — p. 24
- [1] MODEL NAME AND SERIAL NUMBERS — p. 24
- (1) L3301/L3901 — p. 24
- (2) L4701 — p. 25
- [2] E4B ENGINE — p. 26
- [3] CYLINDER NUMBER — p. 26
- [1] MODEL NAME AND SERIAL NUMBERS — p. 24
- 2. GENERAL PRECAUTIONS — p. 27
- 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING — p. 28
- [1] WIRING — p. 28
- [2] BATTERY — p. 30
- [3] FUSE — p. 30
- [4] CONNECTOR — p. 30
- [5] CIRCUIT TESTER — p. 31
- [6] COLOR OF WIRING — p. 32
- 4. LUBRICANTS, FUEL AND COOLANT — p. 33
- [1] L3301/L3901 — p. 33
- [2] L4701 — p. 34
- 5. TIGHTENING TORQUES — p. 36
- [1] GENERAL USE SCREWS, BOLTS AND NUTS — p. 36
- [2] STUD BOLTS — p. 36
- [3] METRIC SCREWS, BOLTS AND NUTS — p. 37
- [4] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF THREADS — p. 37
- [5] PLUGS — p. 37
- 6. MAINTENANCE CHECK LIST — p. 38
- [1] L3301/L3901 — p. 38
- [2] L4701 — p. 41
- 7. CHECK AND MAINTENANCE — p. 44
- [1] L3301/L3901 — p. 44
- (1) Daily Check — p. 44
- (2) Check Points of Every 50 Hours — p. 49
- (3) Check Points of Every 100 Hours — p. 52
- (4) Check Points of Every 200 Hours — p. 57
- (5) Check Points of Every 400 Hours — p. 59
- (6) Check Point of Every 600 Hours — p. 62
- (7) Check Point of Every 800 Hours — p. 63
- (8) Check Points of Every 1500 Hours — p. 63
- (9) Check Points of Every 3000 Hours — p. 64
- (10) Check Points of Every 1000 Hours or 1 year — p. 64
- (11) Check Points of Every 1 Year — p. 64
- (12) Check Points of Every 2000 Hours or 2 Years — p. 66
- (13) Check Points of Every 2 Years — p. 68
- (14) Check points of Every 4 Years — p. 68
- (15) Others — p. 69
- [2] L4701 — p. 73
- (1) Daily Check — p. 73
- (2) Check Points of Every 50 Hours — p. 78
- (3) Check Points of Every 100 Hours — p. 81
- (4) Check Points of Every 200 Hours — p. 85
- (5) Check Points of Every 400 Hours — p. 87
- (6) Check Point of Every 600 Hours — p. 89
- (7) Check Point of Every 800 Hours — p. 90
- (8) Check Points of Every 1500 Hours — p. 90
- (9) Check Points of Every 3000 Hours — p. 91
- (10) Check Points of Every 1000 Hours or 1 year — p. 91
- (11) Check Points of Every 1 Year — p. 91
- (12) Check Points of Every 2000 Hours or 2 Years — p. 94
- (13) Check Points of Every 2 Years — p. 96
- (14) Check points of Every 4 Years — p. 96
- (15) Others — p. 97
- [1] L3301/L3901 — p. 44
- 8. SPECIAL TOOLS — p. 101
- [1] SPECIAL TOOLS FOR ENGINE — p. 101
- [2] SPECIAL TOOLS FOR TRACTOR — p. 111
- 9. TIRES — p. 121
- [1] TIRE PRESSURE — p. 121
- [2] TREADS ADJUSTMENT — p. 122
- (1) L3301/L3901 — p. 122
- (2) L4701 — p. 124
- [3] TIRE LIQUID INJECTION — p. 128
- 10. IMPLEMENT LIMITATIONS — p. 131
- 1. TRACTOR IDENTIFICATION — p. 24
- GENERAL — p. 22
- 1 ENGINE — p. 134
- MECHANISM — p. 135
- 1. FEATURES — p. 136
- 2. ENGINE BODY — p. 137
- [1] PISTON — p. 137
- [2] HALF-FLOATING HEAD COVER — p. 137
- 3. LUBRICATING SYSTEM — p. 138
- [1] OIL COOLER — p. 138
- 4. COOLING SYSTEM — p. 139
- [1] THERMOSTAT — p. 139
- [2] BOTTOM BYPASS SYSTEM — p. 140
- 5. FUEL SYSTEM — p. 141
- [1] OVERVIEW OF COMMON RAIL SYSTEM — p. 141
- [2] SUPPLY PUMP — p. 143
- [3] RAIL — p. 146
- [4] INJECTOR — p. 147
- [5] ENGINE CONTROL SYSTEM — p. 151
- (1) Engine ECU — p. 152
- (2) Sensor — p. 152
- 6. EGR SYSTEM — p. 154
- [1] OVERVIEW — p. 154
- [2] EGR COOLER — p. 155
- [3] EGR VALVE — p. 155
- 7. AFTER TREATMENT SYSTEM — p. 156
- [1] AFTER TREATMENT DEVICES — p. 156
- SERVICING — p. 161
- 1. TROUBLESHOOTING — p. 162
- 2. SERVICING SPECIFICATIONS — p. 165
- 3. TIGHTENING TORQUES — p. 170
- 4. CHECKING AND ADJUSTING — p. 172
- [1] ENGINE BODY — p. 172
- [2] LUBRICATING SYSTEM — p. 174
- [3] COOLING SYSTEM — p. 174
- [4] PCV VALVE — p. 177
- [5] EGR COOLER — p. 177
- [6] ACCELERATION SENSOR — p. 178
- 5. PREPARATION — p. 179
- [1] SEPARATING DPF MUFFLER FROM TRACTOR — p. 179
- [2] SEPARATING ENGINE FROM CLUTCH HOUSING — p. 185
- [3] SEPARATING ENGINE FROM FRONT AXLE FRAME — p. 197
- 6. DISASSEMBLING AND ASSEMBLING — p. 200
- [1] OUTER PARTS — p. 200
- [2] EGR — p. 200
- [3] COMMON RAIL — p. 201
- [4] CYLINDER HEAD AND VALVES — p. 203
- [5] THERMOSTAT — p. 208
- [6] SUPPLY PUMP — p. 209
- [7] WATER PUMP AND OIL COOLER — p. 210
- [8] GEAR CASE AND TIMING GEAR — p. 211
- [9] PISTON AND CONNECTING ROD — p. 214
- [10] FLYWHEEL AND CRANKSHAFT — p. 217
- 7. SERVICING — p. 223
- [1] CYLINDER HEAD AND VALVES — p. 223
- [2] TIMING GEARS — p. 229
- [3] PISTON AND CONNECTING ROD — p. 232
- [4] CRANKSHAFT — p. 234
- [5] CYLINDER — p. 239
- [6] OIL PUMP — p. 240
- MECHANISM — p. 135
- 2 CLUTCH — p. 241
- MECHANISM — p. 242
- 1. FEATURE — p. 243
- [1] TRAVELING CLUTCH — p. 243
- (1) Manual Transmission Model — p. 243
- (2) Hydrostatic Transmission (HST) Model — p. 244
- [1] TRAVELING CLUTCH — p. 243
- 1. FEATURE — p. 243
- SERVICING — p. 245
- 1. TROUBLESHOOTING — p. 246
- 2. SERVICING SPECIFICATIONS — p. 248
- 3. TIGHTENING TORQUES — p. 249
- 4. CHECKING AND ADJUSTING — p. 250
- 5. DISASSEMBLING AND ASSEMBLING — p. 251
- [1] L3301/L3901 — p. 251
- (1) Separating Engine and Clutch Housing — p. 251
- (2) Separating Clutch Assembly — p. 258
- [2] L4701 — p. 259
- (1) Separating Engine and Clutch Housing — p. 259
- (2) Separating Clutch Assembly — p. 266
- [1] L3301/L3901 — p. 251
- 6. SERVICING — p. 267
- [1] SINGLE STAGE CLUTCH — p. 267
- [2] DUAL STAGE CLUTCH — p. 269
- MECHANISM — p. 242
- 3 TRANSMISSION — p. 271
- MECHANISM — p. 272
- 1. STRUCTURE — p. 273
- [1] MANUAL TRANSMISSION MODEL — p. 273
- (1) L3301 — p. 273
- (2) L3901 — p. 274
- (3) L4701 — p. 275
- [2] HYDROSTATIC TRANSMISSION (HST) MODEL — p. 276
- (1) L3301/L3901 — p. 276
- (2) L4701 — p. 277
- [1] MANUAL TRANSMISSION MODEL — p. 273
- 2. MANUAL TRANSMISSION MODEL — p. 278
- [1] POWER TRAIN FOR TRAVELING GEARS — p. 278
- (1) Main Gear Shift Section — p. 278
- (2) Synchro-Shuttle Section — p. 279
- (3) Range Gear Shift Section — p. 280
- (4) Front Wheel Drive Section (4WD Model Only) — p. 281
- [2] PTO SYSTEM — p. 282
- (1) Structure — p. 282
- (2) Shift Linkage (L3301/L3901) — p. 284
- (3) System of PTO Clutch (L4701) — p. 284
- [1] POWER TRAIN FOR TRAVELING GEARS — p. 278
- 3. HYDROSTATIC TRANSMISSION (HST) MODEL — p. 287
- [1] Hydrostatic Transmission Assembly — p. 287
- (1) Structure — p. 287
- (2) Oil Flow — p. 291
- (3) Operation — p. 293
- [2] POWER TRAIN FOR TRAVELING GEARS — p. 300
- (1) Range Gear Shift Section — p. 300
- (2) Front Wheel Drive Section — p. 301
- [3] LINKAGE MECHANISM — p. 302
- (1) HST PEDAL CONTROL LINKAGE — p. 302
- (2) Cruise Control — p. 304
- [4] PTO SYSTEM — p. 306
- (1) Structure — p. 306
- (2) Mechanism — p. 307
- [1] Hydrostatic Transmission Assembly — p. 287
- 1. STRUCTURE — p. 273
- SERVICING — p. 310
- 1. TROUBLESHOOTING — p. 311
- 2. SERVICING SPECIFICATIONS — p. 316
- [1] L3301/L3901 — p. 316
- [2] L4701 — p. 318
- 3. TIGHTENING TORQUES — p. 320
- [1] L3301/L3901 — p. 320
- [2] L4701 — p. 321
- 4. CHECKING AND ADJUSTING — p. 323
- [1] L3301/L3901 — p. 323
- (1) MANUAL TRANSMISSION MODEL — p. 323
- (2) HST Model — p. 324
- [2] L4701 — p. 328
- (1) MANUAL TRANSMISSION MODEL — p. 328
- (2) HST Model — p. 330
- [1] L3301/L3901 — p. 323
- 5. DISASSEMBLING AND ASSEMBLING — p. 336
- [1] L3301/L3901 — p. 336
- (1) Preparation — p. 336
- (2) Disassembling and Assembling (Manual Transmission Model) — p. 349
- (3) Disassembling and Assembling (HST Model) — p. 358
- [2] L4701 — p. 370
- (1) Preparation — p. 370
- (2) Disassembling and Assembling (Manual Transmission Model) — p. 383
- (3) Disassembling and Assembling (HST Model) — p. 396
- [1] L3301/L3901 — p. 336
- 6. SERVICING — p. 410
- [1] L3301/L3901 — p. 410
- (1) Clutch Housing Case — p. 410
- (2) Transmission Case — p. 414
- [2] L4701 — p. 418
- (1) Clutch Housing Case — p. 418
- (2) Mid Case — p. 422
- (3) Transmission Case — p. 423
- [1] L3301/L3901 — p. 410
- MECHANISM — p. 272
- 4 REAR AXLE — p. 428
- MECHANISM — p. 429
- 1. STRUCTURE — p. 430
- SERVICING — p. 431
- 1. TROUBLESHOOTING — p. 432
- 2. TIGHTENING TORQUES — p. 433
- 3. DISASSEMBLING AND ASSEMBLING — p. 434
- [1] SEPARATING REAR AXLE CASE — p. 434
- [2] DISASSEMBLING REAR AXLE — p. 439
- 4. SERVICING — p. 440
- MECHANISM — p. 429
- 5 BRAKES — p. 441
- MECHANISM — p. 442
- 1. STRUCTURE — p. 443
- 2. OPERATION — p. 444
- SERVICING — p. 445
- 1. TROUBLESHOOTING — p. 446
- 2. SERVICING SPECIFICATIONS — p. 447
- 3. TIGHTENING TORQUES — p. 448
- 4. CHECKING AND ADJUSTING — p. 449
- 5. DISASSEMBLING AND ASSEMBLING — p. 450
- [1] SEPARATING BRAKE CASE — p. 450
- [2] DISASSEMBLING THE BRAKE CASE — p. 456
- 6. SERVICING — p. 457
- MECHANISM — p. 442
- 6 FRONT AXLE — p. 458
- MECHANISM — p. 459
- 1. STRUCTURE — p. 460
- [1] 2WD Model — p. 460
- [2] 4WD Model — p. 461
- 1. STRUCTURE — p. 460
- SERVICING — p. 462
- 1. TROUBLESHOOTING — p. 463
- 2. SERVICING SPECIFICATIONS — p. 464
- 3. TIGHTENING TORQUES — p. 467
- 4. CHECKING AND ADJUSTING — p. 468
- 5. DISASSEMBLING AND ASSEMBLING — p. 471
- [1] L3301/L3901 — p. 471
- (1) Separating Front Axle from Front Axle Frame — p. 471
- (2) Disassembling Front Axle — p. 474
- [2] L4701 — p. 479
- (1) Separating Front Axle from Front Axle Frame — p. 479
- (2) Disassembling Front Axle — p. 481
- [1] L3301/L3901 — p. 471
- 6. SERVICING — p. 488
- [1] 2WD MODEL — p. 488
- [2] 4WD MODEL — p. 490
- MECHANISM — p. 459
- 7 STEERING — p. 495
- MECHANISM — p. 496
- 1. STRUCTURE (L3301/L3901) — p. 497
- [1] LINKAGE — p. 497
- [2] HYDRAULIC CIRCUIT — p. 498
- [3] HYDRAULIC PUMP — p. 498
- [4] STEERING GEAR BOX — p. 499
- (1) STRUCTURE — p. 499
- (2) OPERATION — p. 500
- 2. STRUCTURE (L4701) — p. 501
- [1] LINKAGE — p. 501
- [2] HYDRAULIC CIRCUIT — p. 502
- [3] HYDRAULIC PUMP — p. 502
- [4] STEERING CONTROLLER — p. 503
- (1) Control Valve — p. 503
- (2) Metering Device (Gerotor) — p. 503
- (3) Oil Flow — p. 504
- [5] STEERING CYLINDER — p. 506
- 1. STRUCTURE (L3301/L3901) — p. 497
- SERVICING — p. 507
- 1. TROUBLESHOOTING — p. 508
- [1] L3301/L3901 — p. 508
- [2] L4701 — p. 509
- 2. SERVICING SPECIFICATIONS — p. 510
- 3. TIGHTENING TORQUES — p. 512
- 4. CHECKING AND ADJUSTING — p. 513
- [1] STEERING WHEEL PLAY (L3301/L3901) — p. 513
- [2] HYDRAULIC PUMP TEST USING FLOW-METER (POWER STEERING) — p. 513
- [3] RELIEF VALVE — p. 516
- (1) L3301/L3901 — p. 516
- (2) L4701 — p. 517
- [4] BLEEDING — p. 517
- 5. DISASSEMLING AND ASSEMBLING — p. 518
- [1] L3301/L3901 — p. 518
- (1) Hydraulic Pump — p. 518
- (2) Separating Steering Gear Box — p. 518
- (3) Disassembling Steering Gear Box — p. 521
- [2] L4701 — p. 523
- (1) Hydraulic Pump — p. 523
- (2) Steering Controller — p. 525
- [1] L3301/L3901 — p. 518
- 6. SERVICING — p. 527
- [1] L3301/L3901 — p. 527
- (1) Hydraulic Pump — p. 527
- (2) Steering Gear Box — p. 528
- [2] L4701 — p. 529
- (1) Hydraulic Pump — p. 529
- [1] L3301/L3901 — p. 527
- 1. TROUBLESHOOTING — p. 508
- MECHANISM — p. 496
- 8 HYDRAULIC SYSTEM — p. 530
- MECHANISM — p. 531
- 1. STRUCTURE — p. 532
- [1] L3301/L3901 — p. 532
- [2] L4701 — p. 533
- (1) Manual Transmission Model — p. 533
- (2) HST Model — p. 534
- 2. HYDRAULIC CIRCUIT — p. 535
- [1] L3301/L3901 — p. 535
- (1) Manual Transmission Model — p. 535
- (2) HST Model — p. 536
- [2] L4701 — p. 537
- (1) Manual Transmission Model — p. 537
- (2) HST Model — p. 538
- [1] L3301/L3901 — p. 535
- 3. THREE POINT HITCH HYDRAULIC SYSTEM — p. 539
- [1] THREE POINT HITCH HYDRAULIC CIRCUIT — p. 539
- [2] HYDRAULIC CYLINDER — p. 540
- [3] LINKAGE MECHANISM — p. 541
- [4] POSITION CONTROL VALVE — p. 543
- [5] HYDRAULIC PUMP — p. 545
- [6] SAFETY VALVE — p. 545
- 4. FRONT HYDRAULIC BLOCK — p. 546
- [1] STRUCTURE — p. 546
- [2] HYDRAULIC CIRCUIT — p. 546
- [3] RELIEF VALVE — p. 547
- 1. STRUCTURE — p. 532
- SERVICING — p. 548
- 1. TROUBLESHOOTING — p. 549
- 2. SERVICING SPECIFICATIONS — p. 550
- 3. TIGHTENING TORQUES — p. 553
- 4. CHECKING AND ADJUSTING — p. 554
- [1] HYDRAULIC PUMP (POWER STEERING) — p. 554
- (1) Test Using Flow-meter — p. 554
- [2] HYDRAULIC PUMP (THREE POINT HITCH HYDRAULIC SYSTEM) — p. 556
- (1) Test Using Flow-meter — p. 556
- [3] RELIEF VALVE — p. 559
- (1) Three Point Hitch Hydraulic System — p. 559
- (2) Power Steering System — p. 560
- [4] SAFETY VALVE — p. 562
- [5] POSITION CONTROL ROD — p. 563
- (1) L3301/L3901 — p. 563
- (2) L4701 — p. 564
- [1] HYDRAULIC PUMP (POWER STEERING) — p. 554
- 5. DISASSEMBLING AND ASSEMBLING — p. 565
- [1] HYDRAULIC PUMP — p. 565
- (1) L3301/L3901 — p. 565
- (2) L4701 — p. 566
- [2] HYDRAULIC CYLINDER — p. 568
- [3] POSITION CONTROL VALVE — p. 572
- [4] RELIEF VALVE — p. 573
- [1] HYDRAULIC PUMP — p. 565
- 6. SERVICING — p. 574
- [1] HYDRAULIC PUMP — p. 574
- [2] HYDRAULIC CYLINDER — p. 575
- MECHANISM — p. 531
- 9 ELECTRICAL SYSTEM — p. 576
- MECHANISM — p. 577
- 1. ELECTRICAL CIRCUIT — p. 578
- [1] L3301/L3901 — p. 578
- [2] L4701 — p. 579
- 2. INSTRUMENT PANEL — p. 580
- [1] SYSTEM OUTLINE — p. 580
- [2] CONSTRUCTION AND FUNCTION OF COMPONENTS — p. 580
- (1) Instrument Panel — p. 580
- (2) Electric Control Unit (ECU) — p. 580
- (3) Switches — p. 581
- (4) Sensors — p. 585
- (5) Others — p. 585
- [3] BASIC CONTROL SYSTEM — p. 587
- (1) Indication Items of Meter Panel — p. 587
- (2) Easy Checker™ — p. 588
- [4] ASSISTANT CONTROL SYSTEM — p. 589
- (1) Self-diagnosis Function — p. 589
- (2) Testing, Setting and Adjusting Function — p. 589
- (3) Glow Control (Old Model) — p. 590
- (4) Glow Control (New Model) — p. 590
- 3. ENGINE STARTING SYSTEM AND STOPPING — p. 591
- [1] STARTING CIRCUIT — p. 591
- [2] RELATED PARTS — p. 592
- [3] ENGINE STARTING CONDITIONS — p. 594
- [4] OPERATOR PRESENCE CONTROL (OPC) — p. 595
- 4. CAN (CONTROLLER AREA NETWORK) — p. 596
- 1. ELECTRICAL CIRCUIT — p. 578
- SERVICING — p. 597
- 1. TROUBLESHOOTING — p. 599
- 2. SERVICING SPECIFICATIONS — p. 606
- 3. TIGHTENING TORQUES — p. 607
- 4. CHECKING AND ADJUSTING — p. 608
- [1] BATTERY — p. 608
- [2] TESTING, SETTING AND ADJUSTING BY ELECTRONIC INSTRUMENT PANEL — p. 610
- (1) Mode Selection — p. 610
- (2) Mode "A" (Test Mode) — p. 611
- (3) Mode "b" (Error Information Clear Mode) — p. 611
- (4) Mode "c" (Acceleration Sensor fine-adjustment Mode) — p. 612
- (5) Mode "d" (Tractor Model Select Mode) — p. 613
- [3] FUSES AND GROUND CABLE — p. 614
- (1) Checking Fuse and Connector — p. 614
- [4] ELECTRONIC INSTRUMENT PANEL — p. 616
- (1) Checking Electronic Instrument Panel Connector — p. 617
- [5] MAIN ELECTRIC CONTROL UNIT (MAIN ECU) — p. 619
- (1) Checking Main Electrical Control Unit Connector — p. 620
- [6] ENGINE ELECTRIC CONTROL UNIT (ENGINE ECU) — p. 621
- (1) Checking Electric Control Unit Connector — p. 622
- [7] STARTING SYSTEM — p. 624
- (1) Key Switch — p. 624
- (2) Safety Switches — p. 625
- (3) Starter — p. 627
- (4) Relays — p. 628
- (5) Glow Control System — p. 629
- [8] OPC (OPERATOR PRESENCE CONTROL) SYSTEM — p. 630
- (1) L3301/L3901 — p. 630
- (2) L4701 — p. 631
- (3) Safety Switch — p. 632
- [9] CHARGING SYSTEM — p. 633
- [10] LIGHTING SYSTEM — p. 634
- (1) Combination Light Switch — p. 634
- (2) Flasher Unit — p. 636
- [11] WARNING LAMP — p. 637
- [12] MONITOR LAMP — p. 638
- [13] GAUGES — p. 639
- [14] ENGINE CONTROL SYSTEM — p. 640
- (1) Injector — p. 640
- (2) SCV (Suction Control Valve) — p. 641
- (3) Rail Pressure Sensor — p. 642
- (4) Fuel Pump — p. 643
- (5) EGR Valve — p. 644
- (6) Crankshaft Position Sensor — p. 644
- (7) Camshaft Position Sensor — p. 645
- (8) Air Flow Sensor — p. 646
- (9) Intake Throttle Valve — p. 647
- (10) Exhaust Temperature Sensor — p. 648
- (11) Differential Pressure Sensor — p. 649
- (12) Parked Regeneration Switch — p. 650
- (13) DPF INHIBIT Switch — p. 651
- (14) Acceleration Sensor — p. 652
- [15] CCV HEATER — p. 653
- (1) CCV Relay — p. 653
- (2) CCV Heater — p. 653
- 5. DISASSEMBLING AND ASSEMBLING — p. 654
- [1] STARTER — p. 654
- [2] ALTERNATOR — p. 655
- 6. SERVICING — p. 657
- [1] STARTER — p. 657
- [2] ALTERNATOR — p. 659
- MECHANISM — p. 577
Capabilities
The source outline separates mechanism explanations from servicing instructions for Engine, Clutch, Transmission, Rear Axle, Brakes, Front Axle, Steering, Hydraulic System, and Electrical System. 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, 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.
- 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 9Y111-10123, PDF edition.
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