Method Of Using Troubleshooting Chart - Komatsu PC200-8M0 Shop Manual

SEN06140-00

Method of using troubleshooting chart

The troubleshooting chart consists of the "Ques-
tions", "Check items", "Causes", and "Troubleshoot-
ing" blocks.
The Questions and Check items are used to narrow
down high probability causes by simple inspection
or from symptoms without using troubleshooting
tools.
Next, use troubleshooting tools or perform direct in-
spection to check the selected Causes in the order
of probability to determine the real cause according
to the troubleshooting procedure.
Questions:
Questions placed in the sections A and B in the
table on the right are those to be answered by
the customer or operator.
Questions in section A are for basic information
about the failure. Depth and accuracy of their an-
swers to the questions in section B may depend
on their concerns on the machine condition.
Check items:
Check items placed in the section C in the table
on the right are to be simply checked by the tech-
nician to select highly probable causes.
Causes:
Various causes are listed is this block.
The technician will be able to narrows down the
probable causes by taking the actions listed in
the blocks A, B, and C.
Troubleshooting:
This section includes various items of trouble-
shooting that are performed in order to verify the
results of the diagnosis made by asking the
questions and inspecting the machine. The trou-
bleshooting is performed in order from the most
probable one by applying troubleshooting tools
or direct inspection.
2
40-600
600 Troubleshooting of engine (S-mode)
Method of using troubleshooting chart
PC200, 200LC, 220, 220LC-8M0