Kubota U25S, U20-3a, U25-3a Excavator Repair Manual

Kubota Excavator Model U25S, U20-3a, U25-3a
U25S is for KTC, KCL and KTA, what we call, PP-version in this manual.
U20-3 and U25-3 are for KE, KUK and KBM, what we call, EU-version in this manual.

Table of Content of the Workshop Service Manual

I General
II Machine body
III Engine
05-M Series Engine……………………………………………………………….III-S-1
Mechanism Section……………………………………………………………. III-M-25
Service Section …………………………………………………………………..III-S-47
IVHydraulic System
V Electrical System
U25S, U20-3a, U25-3a

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 U25S, U20-3a, U25-3a 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 U25S, U20-3a, U25-3a 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.

The quantities of oil, fuel, water and others, except for the oil to be filled in the track rollers and idlers, are listed just as reference. Fill up the fluid up to the specified center level of a level gauge if it is provided in the manual.