All 334 pages of this Kubota KH-101 Workshop Manual (OEM #97899-60062) address one machine family: the KH-36, KH-41, KH-51, KH-66, KH-91, KH-101, KH-151, and KH-191 compact excavators. Inside: hydraulic circuit diagrams with complete fluid routing, electrical wiring diagrams, and exploded views spanning the front attachment all the way to the rotary joint. You also get torque specification tables, troubleshooting sections covering machine body, hydraulic, and electrical faults, plus disassembly and rebuild procedures for pumps, control valves, cylinders, and motors. Tighten the gear case mounting bolts to 20.0~23.0 kgf·m on the larger models, then torque the swivel bearing bolts to 7.9~9.2 kgf·m before reassembly. Your excavator is down and forums won't fix it. Bookmarked and searchable: open on your tablet, jump to any section, start wrenching.
What's Inside This Kubota KH-36 & variants Manual
| System | Pages | Key Topics |
|---|---|---|
| 1. General | 3-29 | Safety Precautions For Servicing, Disassembly And Reassembly, Periodic Inspection And Servicing Table, Lubrication, Tightness Torque & Adhesive |
| 2. Machine Body | 30-166 | Troubleshooting, Specifications, Front Attachment (Removing Of Front Attachment), Upper Structure (Swivel Reduction Gear Case, Swivel Bearing, Control Lever, Cab) |
| 3. Hydraulic System | 167-290 | Troubleshooting, Specifications, Pump, Control Valve & Relief Valve, Cylinder, Motor, Rotary Joint, Service Information |
| 4. Electrical System | 291-316 | Components, Electrical Circuit Diagram |
| 5. Engine | 317-333 | Specification, Maintenance Standards, Engine Dismantling From Machine Body, Important Tightening Torque Table |
| Back Cover | 334 | Kubota Corporation, Editor, Hirakata Plant, Printed In Japan, Code Number 97899-60062 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| KH-36, KH-41 | ||
| Traveling reduction gear case mounting bolt torque | 12.6~15.0 kgf·m | p. 59 |
| Swivel bearing mounting bolts torque | 7.9~9.2 kgf·m | p. 63 |
| Sprocket holder bolt tightening torque | 7.5~8.5 kgf·m | p. 101 |
| KH-41, KH-51, KH-61 | ||
| Cylinder head bolt torque | 43.4~47.0 N·m | p. 332 |
| KH-51, KH-61, KH-66, KH-91, KH-101, KH-151 | ||
| Gear case mounting bolt tightening torque | 20.0~23.0 kgf·m | p. 59 |
| KH-51, KH-61, KH-66 | ||
| Swivel bearing mounting bolts torque | 26.5~31.0 kgf-m | p. 63 |
| KH-51, KH-61, KH-66, KH-91, KH-101 | ||
| Sprocket holder bolt tightening torque | 10.5~12.0 kgf·m | p. 101 |
| KH-66, KH-91, KH-101, KH-151 | ||
| Cylinder head bolt torque | 54.7~57.9 N·m | p. 332 |
| KH-91, KH-101, KH-151 | ||
| Swivel bearing mounting bolts torque | 26.5~31.0 kgf·m | p. 63 |
| All Models | ||
| General bolt torque (M10, 7T) | 48.1~55.9 N·m | p. 20 |
| KH-151 | ||
| Sprocket holder bolt tightening torque | 21.0~23.0 kgf·m | p. 101 |
| KH-36 | ||
| Engine Oil Capacity | 1.6L | p. 17 |
Kubota KH-36 & variants Common Problems This Manual Covers
Kubota KH-36 hydraulic functions become weak and boom response degrades under heavy load
Inspect the main relief valve pressure as outlined on page 178. Connect a gauge and verify it reads 20.1±0.5 MPa. If the pressure falls below this specification, adjust or replace the valve. Drain and refill the hydraulic system to the 23L capacity shown on page 180.
Manual Section: Hydraulic System Common Circuit TroubleshootingEngine hard-starts, lacks power, stalls out, or smokes excessively in cold weather p. 291
Test the glow plugs and battery if cold starting fails. Measure the battery voltage to ensure a minimum of 12V as specified on page 299. Check the glow plug voltage and current for 12V/3.4W. Replace faulty glow plugs and verify the starter nominal output is 1.0KW.
Manual Section: Electrical System TroubleshootingTrack drive is weak, machine pulls to one side, or travel stops completely under load
Check the traveling reduction gear case mounting bolts for looseness. Torque the bolts to 12.6~15.0 kgf·m as specified on page 59. Inspect the sprocket holder bolts and tighten them to 7.5~8.5 kgf·m using the specifications on page 101. Replace worn track rollers if the issue persists.
Manual Section: Machine Body General TroubleshootingFrequent coolant loss, visible seepage around the engine block, or loss of compression p. 317
Inspect the cylinder head gasket for signs of failure or leakage. Torque the cylinder head bolts to 28.9~32.5 N·m following the instructions on page 332. Refill the engine oil with API CC/CD grade oil to the 1.6L capacity noted on page 17.
Manual Section: 5. EngineFrequently Asked Questions
What are the torque specs for the Kubota KH series swing motor, final drive, and track components?
The torque specifications for Kubota KH series excavators include: Swing Motor bolts should be tightened uniformly to 65.1~72.3 ft·lbf (9-10 kgf·m). For the Travel Reduction Gear Case, torque ranges from 91.1~108.5 ft·lbf (12.6~15.0 kgf·m) for KH-36, 41, up to 271.2~318.2 ft·lbf (37.5~44.0 kgf·m) for KH-151. Sprocket Holder bolt tightening torque is 54.2~61.5 ft·lbf (7.5~8.5 kgf·m) for KH-36, 41, and up to 151.9~166.4 ft·lbf (21.0~23.0 kgf·m) for KH-151.
How do I set the idle speed on a Kubota KH-91 or KH-191 excavator?
To set the idle speed on a Kubota KH-91 or KH-191 excavator, you need to adjust the accelerator lever. For the KH-91, the idling speed should be set between 1100-1300 rpm, and for the KH-191, it should be between 900-1100 rpm. The adjustment involves setting the accelerator lever to the STOP position and then adjusting the stopper (b) to the acceleration lever to achieve the desired engine speed.
What are the replacement specifications for Hydraulic hoses?
For preventing leakage from bucket piping, the replacement part for Hydraulic pipe 20 is part number 68531-6393-1. When installing, the pipe nut tightening torque is 5.5 to 6.5 kgf·m (39.8 to 47.0 ft·lbs). Additionally, a clamp kit 60mm (2.3") is used, with a tightening torque of 2.8 to 3.0 kgf·m (20.3 to 21.7 ft·lbs).
What are the replacement specifications for Hydraulic seals and O-rings?
When replacing hydraulic seals and O-rings, always use new ones. For floating seals, ensure O-rings and retainers are free from oil deposits and avoid twisting O-rings during installation. For rotary joint O-rings and backup rings, install them at the top, bottom, and intermediate stages as specified for each model (e.g., KH-36, 41, 151). Specific breather cover packings are available under part number 15321-05431.
How quickly can I access this Kubota KH-36 & variants manual after buying?
Instant PDF download. You get the full 334-page searchable Workshop Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Are there any print restrictions on this Kubota KH-36 & variants manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this Kubota KH-36 & variants Workshop Manual cover the hydraulic system?
Full hydraulic system diagrams are included, covering circuits, valve locations, and hydraulic component specs for the Kubota KH-36 & variants.
Document Quality
This document is a scanned PDF with an OCR layer, which means you can search and copy text from its pages. The text throughout is consistently crisp and easy to read, without any blurriness or fading. Diagrams and illustrations are raster images; they are generally clear, but some fine print on labels might require zooming to be perfectly legible. The pages are clean, showing minimal scan artifacts, stains, or skewed content. You will find several blank pages that act as section separators or filler.
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