Komatsu PC88MR-10 Shop Manual page 497

3) Make checks of other items.
4) Check other maintenance matters which can be checked externally and are considered to be
necessary.
4. Checking failure
Check the extent of the failure by yourself, and judge whether it is a real failure or a problem with the
method of operation, etc.
a When operating the machine to reenact the troubleshooting symptoms, do not perform any inspection
or measurement that may make the problem worse.
5. Troubleshooting
Use the results of the investigation and inspection in Items 2 to 4 to narrow down the probable causes of
the failure, then use the troubleshooting flowchart to locate the failure exactly.
a The basic procedure for troubleshooting is as follows.
1) Start from the simple points.
2) Start from the most likely points.
3) Investigate other related parts or information.
6. Measures to remove root cause of failure
Fixing a trouble in hand does not necessarily prevents its recurrence unless the primary cause is
eliminated. To that end, you must locate and eliminate the primary cause behind the given failure.
PC88MR-10
40 Troubleshooting
Related information on troubleshooting
40-9