
Troubleshooting
Safety, Operation and Maintenance Manual - Aug 2012
6-8
SY115C9/135C/155H Crawler Hydraulic Excavator
6) Has the same kind of failure occurred
before?
3. Check before troubleshooting
1) Check the oil level.
2) Check for any external leakage of oil
from the piping or hydraulic equipment.
3) Check the travel of the control levers.
4) Check the stroke of the control valve
spool.
5) Other maintenance items can be
checked externally, so check any item
that is considered to be necessary.
4. Con
fi
rming failure
★
Confirm the extent of the failure your-
self, and judge whether to handle it as
a real failure or as a problem with the
method of operation, etc.
★
When operating the machine to reenact
the troubleshooting symptoms, do not
carry out any investigation or measure-
ment that may make the problem worse.
5. Troubleshooting
★
Use the results of the investigation
and inspection in Items 2 – 4 to narrow
down the causes of failure, then use the
troubleshooting flowchart to locate the
position of the failure exactly.
★
The basic procedure for troubleshooting
is as follows.
1) Start from the simple points.
2) Start from the most likely points.
Содержание SY115C9
Страница 109: ...System Functions Safety Operation and Maintenance Manual Aug 2012 3 4 SY115C9 135C 155H Crawler Hydraulic Excavator ...
Страница 193: ...Operation Safety Operation and Maintenance Manual Sep 2012 4 4 SY115C9 135C 155H Crawler Hydraulic Excavator ...
Страница 263: ...Maintenance Safety Operation and Maintenance Manual Aug 2012 5 4 SY115C9 135C 155H Crawler Hydraulic Excavator ...
Страница 403: ...Specifications SY115C9 135C 155H Crawler Hydraulic Excavator 7 2 Safety Operation and Maintenance Manual Aug 2012 ...