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TROUBLESHOOTING
Troubleshooting
If any machine trouble has occurred, immediately repair it.
Make certain the cause of the trouble and take necessary
measures to prevent the reoccurrence of the same trouble.
In case troubleshooting is difficult, or measures marked with
* must be taken, consult the nearest Hitachi dealer. Never
attempt to adjust, disassemble, or repair the hydraulic and/or
electrical/electronic parts/components.
IMPORTANT: Never attempt to disassemble or modify the
electrical/electronic components.
Only the items that differ from those on the Hitachi hydraulic
excavator are described in this section. Refer to the "Operator's
Manual for Hitachi Hydraulic Excavator" for other inquiries
than described in this section.
Super long front attachment is installed.
Problem
Cause
Solution
Swing speed becomes faster
Faulty pressure reducing valve
Repair or replace
7-1
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