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Kubota U17, U17-3a Excavator Workshop Repair Manual

Kubota U17, U17-3a Excavator Workshop Repair Manual

$33.00

🚜 Equipment
Brand	Kubota
Type	Excavator
Model	U17, U17-3a
📄 Documents
Language	English
Format	PDF
Title	Model	Publication No.	Pages
Repair Manual	U17, U17-3a	97899-61952	722
Operators Manual	U17, U17-3a	97899-61952	97

The Kubota U17 and U17-3a Mini Excavators are ultra-compact, zero-tail swing machines designed for maximum efficiency, safety, and versatility in confined job sites. With powerful yet fuel-efficient Kubota diesel engines and advanced hydraulics, these models provide smooth, reliable performance for applications such as landscaping, utilities, and urban construction. Built with robust undercarriage components and operator-friendly features, they balance strength with easy maneuverability.

The U17 is powered by a Kubota diesel engine rated at ~17 hp, offering a maximum digging depth of 2.31 m and a breakout force of about 1,550 kgf. Its adjustable track width (990–1240 mm) ensures stability while allowing access through narrow spaces. The U17-3a, an upgraded Stage V compliant version, delivers ~15.3 hp with refined hydraulics, smoother travel control, and improved operator ergonomics. Both models feature zero-tail swing design, making them safe and efficient in restricted areas, while auxiliary hydraulics support a variety of attachments.

The workshop repair manual provides comprehensive technical coverage for both models, including safety procedures, body and engine identification, and maintenance intervals. It details machine specifications, undercarriage servicing, hydraulic system components (pump, control valves, travel and swivel motors), and electrical systems with Kubota Intelligent Control System (KICS). It also includes torque specifications, lubrication charts, hydraulic/electrical schematics, troubleshooting flow charts, and disassembly/reassembly instructions, ensuring accurate diagnostics and efficient servicing.

Key Highlights

U17: ~1,680 kg operating weight; ~17 hp engine; 2.31 m digging depth; 1,550 kgf bucket breakout force
U17-3a: ~1,650–1,700 kg operating weight; ~15.3 hp Stage V diesel engine; 2.31 m digging depth; 3.9 m reach; 1,545 kgf breakout force
Adjustable track gauge (990–1240 mm) for narrow access and stability
Zero-tail swing design for maneuverability and safety in confined areas
Auxiliary hydraulics for versatile attachment compatibility
ROPS/TOPS canopy and ergonomic controls for operator safety and comfort
Manual coverage: engine, hydraulics, electrical systems, cab, undercarriage, travel/swing motors
Includes wiring and hydraulic schematics, torque specs, lubrication schedules, and troubleshooting charts
KICS (Kubota Intelligent Control System) with auto-idling and diagnostic features
Designed for durability, fuel efficiency, and easy serviceability

Title	Repair Manual, Operators Manual

Table of Content

📙 Table of Contents – Publication Number 97899-61952

Wsm_U17-3A_97899-61951

WSM_U17-3A_97899-61951
- CONTENTS
- I. GENERAL
  - A. BODY AND ENGINE IDENTIFICATION MARKS
  - B. SAFETY PRECAUTIONS FOR SERVICING, DISASSEMBLY AND REASSEMBLY
    - a. Safety Measures Before Starting Work
    - b. Safety Measures During Work
    - c. Preparation for Disassembly
    - d. Precautions for Disassembly and Reassembly
  - C. IMPORTANT SAFETY PROCESS AND CRITICAL FUNCTIONAL PROCESS
  - D. IMPORTANT INSPECTION ITEMS AFTER REASSEMBLING
    - a. Piping
  - E. MAINTENANCE INTERVALS
    - a. EU-version
    - b. PP (KTC, KCL)-version
    - c. KTA-version
    - d. Hydraulic Oil Check for Machines with Hydraulic Breakers
    - e. Maintenance Items
    - f. Troubleshooting for Operators
    - g. Periodic Replacement of Important Component Parts
    - h. Recommended Oils
    - i. Lifting Capacity
  - F. PRODUCT INFORMATION
    - a. U17-3a Development Concept
    - b. Why Minor Change?
    - c. Quick Chart
    - d. Major Sales Feature
    - e. Specifications Comparison
- II. MACHINE BODY (Mechanism Section)
  - A. MACHINE SPECIFICATIONS
    - a. Major Dimensions and Working Range (with Rubber Crawler)
    - b. Dimensions
    - c. Main Specifications
    - d. U17-3a vs U17/U17-3
  - B. MACHINE BODY STRUCTURE AND FUNCTION
    - a. Overall Arrangement
    - b. Under Carriage Components
- II. MACHINE BODY (Service Section)
  - A. SPECIFICATIONS
    - a. Machine Weight
    - b. Main Specifications
    - c. Lever Stroke and Operating Force
    - d. Dimensions of Parts
    - e. Quality Specifications
  - B. FRONT ATTACHMENT
    - a. Pin, Bush and Shim Installation
    - b. Instruction to Press in the Bushing
    - c. Greasing Points
  - C. UPPER STRUCTURE
    - a. Swivel Bearing
    - b. Travel Lever
    - c. Accelerator Lever
    - d. Dozer Lever
    - f. Swing Pedal
    - g. Service Port Pedal
    - h. Pilot Control Valve
    - i. Limit Switch Installation
    - j. Seat and Seat Belt
    - k. Wrist Rest
    - l. Canopy
    - m. Weight
  - D. UNDERCARRIGE
    - a. Track Tension Device
    - b. Track Roller
- III. ENGINE (Mechanism Section)
  - A. ENGINE SPECIFICATIONS
  - B. NEW EMISSIONS CONTROL ENGINES
    - a. Outline
    - b. Engine List for Minor Change
- III. ENGINE (Service Section)
  - A. ENGINE ACCESSORIES
    - a. Engine Mount
    - b. Air Cleaner
    - c. Radiator
    - d. Thermostat
    - e. Muffler
    - f. Pump Coupling
    - g. Fuel Tank
    - h. Fuel Hoses
    - i. Engine Outlook
  - Engine WSM : SM-E3B SERIES
- IV. HYDRAULIC SYSTEM (Mechanism Section)
  - A. HYDRAULIC SYSTEM
    - a. Main Pump
    - b. Control Valve
    - c. Swivel Motor
    - d. Travel Motor (Wheel Motor)
    - e. Pilot Valve (Remote Control Valve)
    - f. Unload Valve
    - g. Selector Valve
    - h. Accessories of Hydraulic Components
    - i. Service Port System
    - j. TPSS (Two Pattern Selection System) : PP – version
    - k. Hydraulic Components Layout: U17-3a, U17/U17-3
    - l. Hydraulic Circuit Diagram
- IV. HYDRAULIC SYSTEM (Service Section)
  - A. TROUBLESHOOTING
    - a. Common Circuit
    - b. Hydraulics
    - c. Pump
    - d. Motor
    - e. Swivel Performance
    - f. Traveling Performance
  - B. TESTING
    - a. Testing Instruments & Special Tools
    - b. Pump Flow
    - c. Pressure Measurement
    - d. Drain Measurement
    - e. Measurement of Block Performance
    - f. Operating Speed
    - g. Straight Travel Performance
    - h. Swivel System Diagnosis
    - i. Travel System Diagnosis
    - j. Cylinder natural fall amount
    - k. Control and Traveling lever operating force
    - l. Lever stroke
  - C. SPECIFICATIONS
    - a. Pump Specifications
    - b. Relief Valve
    - c. Swivel Performance
    - d. Traveling Performance
    - e. Cylinder
    - f. Service Port Flow Amount
    - g. Motor Oil Drain Amount Test Sample
  - D. DISASSEMBLING AND REASSEMBLING
    - a. Pump
    - b. Control Valve
    - c. Pilot Valve
    - d. Swivel Motor
    - e. Rotary Joint
    - f. Travel Motor
    - g. Cylinder
    - h. Change Valve (Dozer, Track)
    - i. Unload Valve
    - j. Accumulator
    - k. Oil Tank
    - l. Third Line
    - m. TPSS Valve (PP-version Only)
    - n. Hydraulic Hose
- V. ELECTRICAL SYSTEM (Mechanism Section)
  - A. GENERAL
    - a. New Functions of Electrical System
  - B. KUBOTA INTELLIGENT CONTROL SYSTEM (KICS)
    - a. Features of Digital Meter
    - b. Operating Mode
    - c. Servide Mode Menues
    - d. Auto Idoling (AI) Control System
    - e. Main Component’s Function
    - f. Failure Diagnosis
    - g. Service Mode Flow Chart
    - h. Electrical Component Layout
    - i. Electric Circuit Diagram
    - j. Electrical Wiring Diagram, Revised Version
- V. ELECTRICAL SYSTEM (Service Section)
  - A. TROUBLESHOOTING
    - a. General
    - b. Engine
    - c. Panel Relevant (Key Switch: ON)
    - d. Panel Relevant (Engine Starting)
    - e. Others
  - C. INSPECTION
    - a. Coupler Check
    - b. Components Check
    - c. Fuse Inspection
    - d. Harness Check
    - e. Battery Check
    - f. Measuring Instruments and Special Tools
  - D. WIRE HARNESS INSTALLATION
    - a. Precautions in Clamping the Electrical Cabling
    - b. Harness Layout, Overview
    - c. Engine’s Back
    - d. Engine’s Top
    - e. Cabling the Unload and Horn Switch
    - f. Routing the Front Electrical Cables
    - g. High-speed Switch, Horn
    - h. Electrical Cabling (Engine Room, Fuel Sensor)
    - i. Electrical Cabling route (Unload, Horn)
    - j. Electrical Cabling (Horn and Dual-speed Wire Harnesses in Right-hand Console)
  - E. MAIN COMPONENTS MAINTENANCE
    - a. Checking the Fuses
    - b. Checking the Battery
    - c. Checking the Horn
    - d. Checking the Glow Relay
    - e. Glow Plug
    - f. Unload Safety Switch
    - g. Hi-Low Travel Switch
    - h. Checking the Solenoid Valve
    - i. Checking the Fuel Pump
    - j. Checking the Fuel Sensor
    - k. Engine Stop Solenoid and Coil Commander
    - l. Checking the Water Temperature Gauge
    - m. Oil Switch
    - n. Relay
    - o. Installation of Canopy Light for KTA
  - F. ANTI-THEFT SYSTEM
    - a. Outline
    - b. Anti-theft system
    - c. Troubleshooting: Display indications

Specification

Specification	Kubota U17	Kubota U17-3a
Operating Weight	~1,680 kg (~3,704 lb)	~1,650–1,700 kg (rubber/steel tracks)
Engine Model & Power	Kubota diesel, ~17 hp gross / 15.2 hp net	Kubota Stage V diesel, ~15.3 hp (11.8 kW)
Maximum Digging Depth	2.31 m (7 ft 7 in)	2.31 m (7 ft 7 in)
Maximum Reach	~3.9 m (12 ft 9 in)	3.9 m (12 ft 9 in)
Bucket Breakout Force	~1,550 kgf (~3,417 lb)	1,545 kgf (~15.2 kN)
Auxiliary Hydraulic Flow	~45 L/min (~11.9 GPM)	~27.7 L/min (~7.3 GPM)
Track Width (Adjustable)	990 mm – 1,240 mm	990 mm – 1,240 mm
Transport Dimensions (L × W × H)	Length ~3.55 m; Width 0.99–1.24 m; Height ~2.35 m	Length ~3.55 m; Width 0.99–1.24 m; Height ~2.35 m
Design Type	Zero-tail swing, ultra-compact	Zero-tail swing, Stage V compliant

Buyer Questions & Answers

Frequently Asked Questions❔

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