Hitachi ZAXIS 135US-6 class User Manual

TROUBLESHOOTING
11-8
Engine Speed
Problem Cause Solution
Even if operating the engine control
dial, the engine speed does not
change.
Blown fuse Replace
Faulty engine control dial * Replace
Poor contact in connector * Repair or replace
Damaged wire harness (between EC dial and
MC, or MC and ECM)
* Repair
Faulty controller (MC, ECM) * Replace
Performing manual regeneration (Normal control)
Work mode does not change. Faulty mode switch * Replace
Poor contact in connector * Repair or replace
Damaged wire harness (between MC and
monitor)
* Repair
Faulty controller (MC) * Replace
Faulty solenoid valve * Repair or replace
Auto-idle is inoperable or not released. Faulty pressure sensor. * Replace
Poor contact in connector * Repair or replace
Damaged wire harness * Repair
Faulty controller. * Replace
Performing manual regeneration (Normal control)
Items with * mark: Consult your authorized dealer.
Pump Control
Problem Cause Solution
Front attachment and/or travel speed
is slow.
Blown control fuse Replace
Poor contact in connector * Repair or replace
Damaged wire harness * Repair
Faulty controller. * Replace
Faulty pump solenoid valve. * Replace
Faulty pressure sensor. * Replace
Items with * mark: Consult your authorized dealer.
Others
The machine may have a noise, excessive vibration, and abnormal smell when any trouble occurs.
Always beware of the machine conditions during operation.

Hitachi ZAXIS 135US-6 class Specifications

General

Brand	Hitachi
Model	ZAXIS 135US-6 class
Category	Excavators
Language	English