To ensure good machine performance, reduce failures or problems, and prolong the service life of each
component, it is necessary to operate the machine as is directed in the Operator and Maintenance Manual.
To effectively diagnose and repair the machine, it is important to follow the guidelines laid out in this Shop Manual.
Functions and structure
For the engine, refer to the engine Shop Manual provided by the engine manufacturer.
The purpose of this manual is to provide information on the product and the correct maintenance and repair
methods. Please read this manual to ensure correct troubleshooting and good repair service.
This manual will be periodically reviewed and revised for more satisfactory content. If you have any opinion or
requests, please inform us.
The most important point in providing repair service is safety. To ensure safety, observe the general cautions
This manual is intended for properly trained and equipped service technicians.
Any work on the machine must be performed by the trained personnel only.
Carefully read this manual to thoroughly understand the operation method before you operate or repair the machine.
Be sure to wear appropriate clothes and protectors, such as safety boots, hard hat and goggles.
Place the machine on level and solid ground, and place chocks against the wheels to prevent movement.
Remove the cable from the battery before starting the service work, and attach a "DO NOT OPERATE!" tag on
the operation board.
Be sure to release the internal pressure before you remove a pipe, such as the hydraulic oil, air, or engine coolant pipe.
Be sure to apply the articulation stopper before starting work.
While supporting the bottom of the chassis using a jack, be sure to support the chassis using the blocks.
When the boom or bucket is raised or when a unit is lifted by a crane, be sure to place a stand or adequate
cribbing under the unit to prevent unexpected dropping.
Do not start to work in