Komatsu PC58UU-3, Руководство по ремонту

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TROUBLESHOOTING METHOD OF USING TROUBLESHOOTING CHARTS
PC58UU-3
20-259
1
METHOD OF USING TROUBLESHOOTING CHARTS
1. Category of troubleshooting code number
2. Using the troubleshooting flow chart
1) Troubleshooting code number and problem (for (1) - (4), see the example on the next page.)
The title at the top of the troubleshooting chart gives the troubleshooting code and failure mode
(problem with the machine).
2) Distinguishing conditions
Even with the same failure mode (problem) the method of troubleshooting may differ according to
the model, component, or problem. In such cases, the failure mode (problem) is further divided into
sections marked with small letters, for example a, so go to the appropriate section to carry out trou-
bleshooting.
If the troubleshooting table is not divided into sections, start troubleshooting from the first check
item in the failure mode.
3) Method of following troubleshooting chart
• Check or measure the item inside , and according to the answer, follow either the YES or
the NO line to go to the next . (Note: The number written at the top right corner of the is
an index number; it does not indicate the order to follow.)
• Following the YES or NO lines according to the results of the check or measurement will lead
finally to the Cause column. Check the cause and take the action given in the Remedy column
on the right.
• Below the there are the methods for inspection or measurement, and the judgement values.
If the judgement values below the are correct or the answer to the question inside the is
YES, follow the YES line; if the judgement value is not correct, or the answer to the question is
NO, follow the NO line.
• Below the is given the preparatory work needed for inspection and measurement, and the
judgement values. If this preparatory work is neglected, or the method of operation or handling
is mistaken, there is danger that it may cause mistaken judgement, or the equipment may be
damaged. Therefore, before starting inspection or measurement, always read the instructions
carefully, and start the work in order from Item 1.
4) General precautions
When carrying out troubleshooting for the failure mode (problem), precautions that apply to all
items are given at the top of the page and marked with
★
.
The precautions marked
★
are not given in the , but must always be followed when carrying out
the check inside the .
5) Troubleshooting tools
When carrying out the troubleshooting, prepare the necessary troubleshooting tools. For details,
see TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING.
6) Installation position, pin number
A diagram or chart is given for the connector type, installation position, and connector pin number
connection. When carrying out troubleshooting, see this chart for details of the connector pin num-
ber and location for inspection and measurement of the wiring connector CNOO appearing in the
troubleshooting flow chart for each failure mode (problem).
Troubleshooting Code No. Component
E- OO Troubleshooting of electrical system
F- OO Troubleshooting of controller input system
H- OO Troubleshooting of hydraulic and mechanical system
M- OO Troubleshooting of machine monitor system