Hitachi 120-3 class User Manual

TROUBLESHOOTING
11-8
MODE SELECTION
Problem Cause Solution
Work Mode Selector
Does Not Work
Mode switches See your authorized dealer.
Electrical connector See your authorized dealer.
Wire harness (between Main controller
(MC) and Monitor)
See your authorized dealer.
Main controller (MC) See your authorized dealer.
Solenoid valve unit See your authorized dealer.
Fast/Slow Travel Speed
Does Not Function
Travel mode switches See your authorized dealer.
Pilot pressure switch (Travel)
Pump 1,2 pressure sensor
Pump 1,2 control pressure sensor
See your authorized dealer.
See your authorized dealer.
See your authorized dealer.
Pump delivery pressure sensor wire
harness
See your authorized dealer.
Main controller (MC) See your authorized dealer.
Solenoid valve unit See your authorized dealer.
Damaged travel motor See your authorized dealer.
Auto-Idle Does Not Work Fuse Replace fuse.
Switch panel See your authorized dealer.
Electrical connector See your authorized dealer.
Wire harness See your authorized dealer.
ECM See your authorized dealer.
Pressure switches (Travel, Front) See your authorized dealer.
Main controller (MC) See your authorized dealer.

Hitachi 120-3 class Specifications

General

Brand	Hitachi
Model	120-3 class
Category	Excavators
Language	English