Kubota KX101-3α3, and U35-3α3 Workshop Manual — RY921-21200

About this manual

Kubota published this Workshop Manual for the KX101-3α3 and U35-3α3 excavator models. It brings the documented service and technical-reference material for those named excavators into a single publication.

Its documented technical value includes torque settings 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 Addendum

Models

KX101-3α3 and U35-3α3

Document number

RY921-21200

Language

English

Page count

113

Product highlights

Hydraulic systems

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

Specifications and settings

The manual includes reference information for torque 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.

• CONTENTS — p. 1
• TO THE READER — p. 2
• G GENERAL — p. 3
  • GENERAL — p. 4
    • 1. MINOR CHANGE NEW FEATURE — p. 5
      • [1] PARTITIONS STRUCTURE MODIFICATION AROUND THE DRIVER'S SEAT — p. 5
        • (1) Seal materials and trims are added to the right bonnet side — p. 6
        • (2) The positions of some hydraulic hoses are changed — p. 7
        • (3) Resin parts behind seat are reinforced — p. 7
      • [2] BONNETS SHAPE MODIFICATION — p. 8
      • [3] HYDRAULIC SYSTEM MODIFICATION — p. 8
      • [4] OTHER CHANGED POINTS — p. 9
      • [5] CHANGED POINTS OF SPECIFICATIONS — p. 9
      • [6] WATER AND OIL QUANTITY — p. 10
      • [7] HYDRAULIC CYLINDER — p. 10
        • (1) Swing Cylinder and Blade Cylinder — p. 10
        • (2) FYI (For your Information) — p. 13
• 1 ENGINE — p. 17
  • GENERAL — p. 18
    • 1. ENGINE SPECIFICATIONS — p. 19
    • 2. PERFORMANCE CURVE — p. 20
    • 3. DIMENSIONS — p. 21
    • 4. ENGINE MOUNT — p. 22
      • [1] ENGINE MOUNT STRUCTURAL COMPONENTS — p. 22
• 2 HYDRAULIC SYSTEM — p. 23
  • SERVICING — p. 24
    • 1. DIAGRAM OF HYDRAULIC CIRCUIT — p. 25
    • 2. PUMP — p. 26
      • [1] SPECIFICATIONS — p. 26
      • [2] PUMP DIASASSEMBLY/ASSEMBLY — p. 29
      • [3] PUMP DISASSEMBLY PROCEDURES — p. 31
        • (1) Disassembly Procedures — p. 33
        • (2) Assembly Procedures — p. 37
    • 3. CONTROL VALVE — p. 42
      • [1] SPECIFICATIONS — p. 42
      • [2] CONTROL VALVE REMOVAL AND INSTALLATION — p. 43
      • [3] CONTROL VALVE DISASSEMBLY/ASSEMBLY PROCEDURES — p. 47
    • 4. TRAVEL MOTOR — p. 60
      • [1] SPECIFICATIONS — p. 60
      • [2] TRAVEL MOTOR DIASASSEMBLY/ASSEMBLY PROCEDURES — p. 61
        • (1) Disassembly Procedures — p. 64
        • (2) Assembly Procedures — p. 71
      • [3] SPECIAL TOOLS — p. 79
    • 5. ROUTING OF HYDRAULIC HOSES — p. 81
      • [1] HYDRAULIC HOSE SPECIFICATIONS — p. 81
        • (1) Total Length of Hydraulic Hose — p. 81
        • (2) Types of Connector Fittings (Screw) — p. 81
      • [2] ROUTING of HYDRAULIC HOSES — p. 82
        • (1) Delivery Hose Routing — p. 82
        • (2) Return Hose Routing — p. 85
        • (3) Pilot Hose Routing — p. 87
        • (4) Hose Routing and Clamp Positions — p. 92
    • 6. HYDRAULIC DEVICE PERFORMANCE MEASUREMENT — p. 98
    • 7. TROUBLESHOOTING — p. 109

Capabilities

The source outline indexes servicing instructions, disassembly and assembly, and troubleshooting. 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 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.

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 RY921-21200, PDF edition.