Kubota U35S, U35-3S, U45-3S Workshop Repair Supplement

Kubota Excavator Model U35S, US35-3S, US45-3S

Table of Content of the Workshop Service Manual

I General
II Machine body
Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .II-M-1
Service Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .II-S-1
III Engine
Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .III-M-1
Service Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .III-S-1
IV Hydraulic System
Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IV-M-1
Service Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IV-S-1
V. ELECTRICAL SYSTEM
Mechanism Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V-M-1
Service Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V-S-1
U35S, US35-3S, US45-3S

Your KUBOTA dealer is always ready to help so that your excavator offers the best performance. After having carefully read this manual, you will realize that much of the routine maintenance can be done by yourself. Machines must be disassembled and assembled efficiently and safely. It is very important to thoroughly understand the construction and function of the machine, to make all appropriate preparations, and start operations according to the specified working procedures in this workshop service manual.

IMPORTANT INSPECTION ITEMS AFTER REASSEMBLING
a Operate the Kubota U35S, US35-3S, US45-3S Excavator and check for Unusual Noise and Vibrations.
b Make Sure the Safety decals and Wire harness Clamps are in their Specified Positions.

c With the Machine Front in a Specified Posture, Check the Amount of Hydrauric Oil Checking the oil level (For further details, refer to the Excavator U35S, US35-3S, US45-3S Operators Manual)

1) Park the machine on a level ground.
2) Make sure the hydraulic oil temperature is in the range of 10-30C (50-86F) and see if the oil level is within the specified zone of the oil level gauge.
3) Keep the machine front as shown as following posture.
Service Engineering Section……………………………………. II-1
A. General outline ………………………………………………………………………….. II-2
B. Finger control service port system………………………………………………. II-22
C. Hydraulic system modification ……………………………………………………. II-57
D. Hydraulic circuit diagram …………………………………………………………… II-91
E. Engine upgrade ……………………………………………………………………… II-109
F. Electrical system…………………………………………………………………….. II-114