TO THE READER
This manual is written for an experienced technician
to provide technical information needed to maintain
and repair this machine.
Be sure to thoroughly read this manual for correct
product information and service procedures.
If you have any questions or comments, at if you
found any errors regarding the contents of this
manual, please contact using “Service Manual
Revision Request Form” at the end of this man-
(Note: Do not tear off the form. Copy it for usage.):
Publications Marketing & Product Support
Hitachi Construction Machinery Co. Ltd.
Please refer to the materials listed below in addition
to this manual.
The Operator’s Manual
The Parts Catalog
Operation Manual of the Engine
Parts Catalog of the Engine
Hitachi Training Material
This manual consists of two portions:
the Technical Manual and the Workshop Manual.
Use the manuals according to purpose.
Information included in the Technical Manual:
technical information needed for redelivery and
delivery, operation and activation of all devices
and systems, operational performance tests, and
Information included in the Workshop Manual:
technical information needed for maintenance and
repair of the machine, tools and devices needed
for maintenance and repair, maintenance stan-
dards, and removal/installation and assem-
Each page has a number, located on the center
lower part of the page, and each number contains
the following information:
Example : T 1-3-5
Consecutive Page Number for Each Group
T: Technical Manual W: Workshop Manual
SAFETY ALERT SYMBOL AND HEADLINE
In this manual, the following safety alert symbol and
signal words are used to alert the reader to the
potential for personal injury of machine damage.
This is the safety alert symbol. When you see this
symbol, be alert to the potential for personal injury.
Never fail to fo