Kubota U17-3 Workshop Manual | 97899-61953

About this manual

Kubota published this Workshop Manual for the U17-3 excavator models. It brings the documented service and technical-reference material for those named excavators into a single publication.

The manual is especially useful for work that crosses electrical and hydraulic systems: it includes electrical troubleshooting with connector views and pinouts, alongside hydraulic diagrams, pressure-test evidence, and valve-adjustment information.

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

Equipment type

Excavator

Models

U17-3

Document number

97899-61953

Language

English

Page count

807

Product highlights

Electrical systems

The manual includes wiring diagrams, electrical troubleshooting, connector views, and pinouts.

Hydraulic systems

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

Specifications and settings

The manual includes reference information for torque specifications, wear limits, pressure specifications, and dimensions.

Special tools

A special-tools section is included.

Maintenance

The manual includes a maintenance schedule.

Applicability and key coverage

Named models: U17-3.

Manual contents

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

• WSM_U17-3A_97899-61951 — p. 1
  • I. GENERAL — p. 5
    • A. BODY AND ENGINE IDENTIFICATION MARKS — p. 7
    • B. SAFETY PRECAUTIONS FOR SERVICING, DISASSEMBLY AND REASSEMBLY — p. 9
      • a. Safety Measures Before Starting Work — p. 9
      • b. Safety Measures During Work — p. 9
      • c. Preparation for Disassembly — p. 10
      • d. Precautions for Disassembly and Reassembly — p. 10
    • C. IMPORTANT SAFETY PROCESS AND CRITICAL FUNCTIONAL PROCESS — p. 11
    • D. IMPORTANT INSPECTION ITEMS AFTER REASSEMBLING — p. 13
      • a. Piping — p. 13
    • E. MAINTENANCE INTERVALS — p. 19
      • a. EU-version — p. 19
      • b. PP (KTC, KCL)-version — p. 23
      • c. KTA-version — p. 25
      • d. Hydraulic Oil Check for Machines with Hydraulic Breakers — p. 26
      • e. Maintenance Items — p. 27
      • f. Troubleshooting for Operators — p. 29
      • g. Periodic Replacement of Important Component Parts — p. 30
      • h. Recommended Oils — p. 31
      • i. Lifting Capacity — p. 32
    • F. PRODUCT INFORMATION — p. 37
      • a. U17-3a Development Concept — p. 37
      • b. Why Minor Change? — p. 37
      • c. Quick Chart — p. 38
      • d. Major Sales Feature — p. 39
      • e. Specifications Comparison — p. 40
  • II. MACHINE BODY (Mechanism Section) — p. 41
    • A. MACHINE SPECIFICATIONS — p. 43
      • a. Major Dimensions and Working Range (with Rubber Crawler) — p. 43
      • b. Dimensions — p. 45
      • c. Main Specifications — p. 47
      • d. U17-3a vs U17/U17-3 — p. 48
    • B. MACHINE BODY STRUCTURE AND FUNCTION — p. 49
      • a. Overall Arrangement — p. 49
      • b. Under Carriage Components — p. 55
  • II. MACHINE BODY (Service Section) — p. 65
    • A. SPECIFICATIONS — p. 67
      • a. Machine Weight — p. 67
      • b. Main Specifications — p. 67
      • c. Lever Stroke and Operating Force — p. 68
      • d. Dimensions of Parts — p. 69
      • e. Quality Specifications — p. 78
    • B. FRONT ATTACHMENT — p. 89
      • a. Pin, Bush and Shim Installation — p. 89
      • b. Instruction to Press in the Bushing — p. 93
      • c. Greasing Points — p. 98
    • C. UPPER STRUCTURE — p. 103
      • a. Swivel Bearing — p. 103
      • b. Travel Lever — p. 104
      • c. Accelerator Lever — p. 107
      • d. Dozer Lever — p. 112
      • f. Swing Pedal — p. 116
      • g. Service Port Pedal — p. 118
      • h. Pilot Control Valve — p. 119
      • i. Limit Switch Installation — p. 122
      • j. Seat and Seat Belt — p. 123
      • k. Wrist Rest — p. 124
      • l. Canopy — p. 125
      • m. Weight — p. 127
    • D. UNDERCARRIGE — p. 129
      • a. Track Tension Device — p. 129
      • b. Track Roller — p. 132
  • III. ENGINE (Mechanism Section) — p. 133
    • A. ENGINE SPECIFICATIONS — p. 135
    • B. NEW EMISSIONS CONTROL ENGINES — p. 139
      • a. Outline — p. 139
      • b. Engine List for Minor Change — p. 140
  • III. ENGINE (Service Section) — p. 141
    • A. ENGINE ACCESSORIES — p. 143
      • a. Engine Mount — p. 143
      • b. Air Cleaner — p. 145
      • c. Radiator — p. 148
      • d. Thermostat — p. 156
      • e. Muffler — p. 157
      • f. Pump Coupling — p. 160
      • g. Fuel Tank — p. 161
      • h. Fuel Hoses — p. 165
      • i. Engine Outlook — p. 166
    • Engine WSM : SM-E3B SERIES — p. 167
  • IV. HYDRAULIC SYSTEM (Mechanism Section) — p. 305
    • A. HYDRAULIC SYSTEM — p. 307
      • a. Main Pump — p. 307
      • b. Control Valve — p. 314
      • c. Swivel Motor — p. 322
      • d. Travel Motor (Wheel Motor) — p. 336
      • e. Pilot Valve (Remote Control Valve) — p. 346
      • f. Unload Valve — p. 355
      • g. Selector Valve — p. 356
      • h. Accessories of Hydraulic Components — p. 357
      • i. Service Port System — p. 363
      • j. TPSS (Two Pattern Selection System) : PP - version — p. 365
      • k. Hydraulic Components Layout: U17-3a, U17/U17-3 — p. 369
      • l. Hydraulic Circuit Diagram — p. 370
  • IV. HYDRAULIC SYSTEM (Service Section) — p. 377
    • A. TROUBLESHOOTING — p. 379
      • a. Common Circuit — p. 379
      • b. Hydraulics — p. 382
      • c. Pump — p. 385
      • d. Motor — p. 386
      • e. Swivel Performance — p. 387
      • f. Traveling Performance — p. 389
    • B. TESTING — p. 391
      • a. Testing Instruments & Special Tools — p. 391
      • b. Pump Flow — p. 393
      • c. Pressure Measurement — p. 394
      • d. Drain Measurement — p. 404
      • e. Measurement of Block Performance — p. 406
      • f. Operating Speed — p. 408
      • g. Straight Travel Performance — p. 410
      • h. Swivel System Diagnosis — p. 411
      • i. Travel System Diagnosis — p. 414
      • j. Cylinder natural fall amount — p. 419
      • k. Control and Traveling lever operating force — p. 419
      • l. Lever stroke — p. 419
    • C. SPECIFICATIONS — p. 421
      • a. Pump Specifications — p. 421
      • b. Relief Valve — p. 422
      • c. Swivel Performance — p. 424
      • d. Traveling Performance — p. 425
      • e. Cylinder — p. 426
      • f. Service Port Flow Amount — p. 428
      • g. Motor Oil Drain Amount Test Sample — p. 428
    • D. DISASSEMBLING AND REASSEMBLING — p. 429
      • a. Pump — p. 429
      • b. Control Valve — p. 444
      • c. Pilot Valve — p. 487
      • d. Swivel Motor — p. 519
      • e. Rotary Joint — p. 533
      • f. Travel Motor — p. 545
      • g. Cylinder — p. 564
      • h. Change Valve (Dozer, Track) — p. 573
      • i. Unload Valve — p. 575
      • j. Accumulator — p. 579
      • k. Oil Tank — p. 582
      • l. Third Line — p. 583
      • m. TPSS Valve (PP-version Only) — p. 585
      • n. Hydraulic Hose — p. 591
  • V. ELECTRICAL SYSTEM (Mechanism Section) — p. 605
    • A. GENERAL — p. 607
      • a. New Functions of Electrical System — p. 607
    • B. KUBOTA INTELLIGENT CONTROL SYSTEM (KICS) — p. 611
      • a. Features of Digital Meter — p. 611
      • b. Operating Mode — p. 616
      • c. Servide Mode Menues — p. 619
      • d. Auto Idoling (AI) Control System — p. 639
      • e. Main Component’s Function — p. 640
      • f. Failure Diagnosis — p. 646
      • g. Service Mode Flow Chart — p. 654
      • h. Electrical Component Layout — p. 657
      • i. Electric Circuit Diagram — p. 658
      • j. Electrical Wiring Diagram, Revised Version — p. 659
  • V. ELECTRICAL SYSTEM (Service Section) — p. 661
    • A. TROUBLESHOOTING — p. 663
      • a. General — p. 663
      • b. Engine — p. 664
      • c. Panel Relevant (Key Switch: ON) — p. 665
      • d. Panel Relevant (Engine Starting) — p. 666
      • e. Others — p. 667
    • C. INSPECTION — p. 671
      • a. Coupler Check — p. 671
      • b. Components Check — p. 672
      • c. Fuse Inspection — p. 675
      • d. Harness Check — p. 676
      • e. Battery Check — p. 676
      • f. Measuring Instruments and Special Tools — p. 677
    • D. WIRE HARNESS INSTALLATION — p. 679
      • a. Precautions in Clamping the Electrical Cabling — p. 679
      • b. Harness Layout, Overview — p. 681
      • c. Engine's Back — p. 682
      • d. Engine's Top — p. 685
      • e. Cabling the Unload and Horn Switch — p. 686
      • f. Routing the Front Electrical Cables — p. 688
      • g. High-speed Switch, Horn — p. 689
      • h. Electrical Cabling (Engine Room, Fuel Sensor) — p. 690
      • i. Electrical Cabling route (Unload, Horn) — p. 691
      • j. Electrical Cabling (Horn and Dual-speed Wire Harnesses in Right-hand Console) — p. 692
    • E. MAIN COMPONENTS MAINTENANCE — p. 693
      • a. Checking the Fuses — p. 693
      • b. Checking the Battery — p. 693
      • c. Checking the Horn — p. 694
      • d. Checking the Glow Relay — p. 695
      • e. Glow Plug — p. 696
      • f. Unload Safety Switch — p. 697
      • g. Hi-Low Travel Switch — p. 699
      • h. Checking the Solenoid Valve — p. 700
      • i. Checking the Fuel Pump — p. 703
      • j. Checking the Fuel Sensor — p. 705
      • k. Engine Stop Solenoid and Coil Commander — p. 707
      • l. Checking the Water Temperature Gauge — p. 708
      • m. Oil Switch — p. 709
      • n. Relay — p. 711
      • o. Installation of Canopy Light for KTA — p. 712
    • F. ANTI-THEFT SYSTEM — p. 715
      • a. Outline — p. 715
      • b. Anti-theft system — p. 716
      • c. Troubleshooting: Display indications — p. 719
  • SERVICING — p. 723
    • 1. READING THE ELECTRICAL CIRCUIT DIAGRAMS — p. 724
      • [1] LAYOUT OF ELECTRICAL CIRCUIT DIAGRAMS — p. 724
        • (1) Main Layout — p. 724
      • [2] LAYOUT OF CONNECTOR DIAGRAMS — p. 728
        • (1) Main Layout — p. 728
      • [3] PRECAUTIONS ON HANDLING ELECTRICAL CONNECTORS — p. 729
    • 2. ELECTRONIC DEVICE LAYOUT — p. 730
    • 3. WIRING CIRCUIT — p. 731
      • [1] PRECAUTIONS ON HOW TO CLAMP THE ELECTRICAL WIRING — p. 731
    • 4. TROUBLESHOOTING (START-UP EQUIPMENT VERSION) — p. 732
    • 5. CHECKS — p. 733
      • [1] POWER — p. 733
      • [2] STARTING AND STOPPING DEVICES — p. 735
    • 6. METER PANEL — p. 737
      • [1] NAMES AND FUNCTIONS OF METERS AND SWITCHES — p. 737
      • [2] NORMAL MODE — p. 737
      • [3] USER SETTINGS MODE — p. 738
      • [4] SERVICE DEALER MODE — p. 741
        • (1) Table of Diagnostic / Setting Items — p. 741
    • 7. TROUBLESHOOTING (METER PANEL) — p. 762
      • [1] ENGINE RELATED SYSTEM — p. 762
        • (1) Engine Oil Pressure Error (E:014) — p. 762
        • (2) Charging System Error (E:016) — p. 766
        • (3) Fuel Sensor Error (E:017) — p. 770
        • (4) Water Temperature Sensor Error (E:018) — p. 774
      • [2] MACHINE RELATED SYSTEM — p. 778
        • (1) Lever Lock System Error (E:020) — p. 778
        • (2) Travel 2-Speed System Error (E:021) — p. 783
      • [3] POWER SUPPLY SYSTEM — p. 788
        • (1) Over-Voltage (E:025) — p. 788
        • (2) External 12 V Short Error (E:028) — p. 790
      • [4] COMMUNICATION SYSTEM — p. 791
        • (1) CAN Communication Error (E:001) — p. 791
      • [5] ANTI-THEFT SYSTEM — p. 794
        • (1) Anti-Theft System Error (E:026) — p. 794
    • 8. FLOW CHART OF THE NORMAL AND USER SETTINGS MODES — p. 799
    • 9. SERVICE DEALER MODE FLOW CHART (1/2) — p. 800
    • 10. SERVICE DEALER MODE FLOW CHART (2/2) — p. 801

Capabilities

The source outline indexes servicing instructions, disassembly and assembly, maintenance tasks, checking and adjustment, troubleshooting, and mechanism explanations. Use these source-backed headings to locate the applicable task or 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, and dimensions 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.
• Machine specifications: dimensions.

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 Excavator, document code 97899-61953, PDF edition.