Kubota U25-3 Repair Manual

U20-3, U25-3 WSM Hydraulic system (Service section)
IV-S-2
A.Troubleshooting
a. Common Circuit
Engine
The engine fails
to start.
The engine starts
but runs poorly.
The starter does not function.
Check the electrical system.
Check the engine.
Check the hydraulic system.
Check the engine.
Check the electrical
system.
Check the engine.
Check the hydraulic
system.
Check the front system.
Check the swivel system.
Check the travel system.
Check the hydraulic
system.
The starter functions, but the engine fails to start.
The engine fails to stop.
The engine rpm is not stable.
Emission is whitish or bluish.
Emission is blackish or dark-grayish.
The output power is short.
Too much oil is consumed.
Fuel gets mixed with the oil.
Water gets mixed with the oil.
The oil pressure is too low.
The oil pressure is too high.
The engine gets overheated.
The glow lamp fails to light up.
The charge lamp fails to light up.
The charge lamp fails to go out.
The entire hydraulic system fails.
The swivel mechanism fails.
The machine fails to travel.
Any of the boom, arm, bucket, swing and dozer
cylinders fails.
The engine rpm drops or becomes zero under load.
The battery discharges itself too fast (dead battery).
Hydraulic system
The engine starts
but the entire
hydraulic system
fails.

Kubota U25-3 Specifications

General

Brand	Kubota
Model	U25-3
Category	Excavators
Language	English