TROUBLESHOOTING
ABOUT THE TROUBLESHOOTING SECTION
1
5
ABOUT THE TROUBLESHOOTING SECTION 5A0BQ00
ABOUT THE TROUBLESHOOTING SECTION
This “Troubleshooting” section describes the fault diagnosis and corrective actions mainly for hydraulic systems. The
cause of the problem can be investigated by following the steps in the chart shown at the beginning of each item.
Notes on troubleshooting and servicing
1. Do not disassemble the faulty part without first investigating a, b, and c below.
a. Ask the user the following questions.
• The situation when the fault occurred.
• Any abnormalities or changes before the fault occurred.
• Any faulty parts other than the part in question.
• Any identical failure in the past
b. Drive the machine yourself and confirm the faulty condition.
• Determine if it is really faulty by referring to the performance criteria. Note that such determination may differ
depending on the person.
Important
By operating the user’s machine, you could make a bad situation worse. Therefore, before driving the machine,
always ask the user’s permission to do so.
c. Determine the cause of trouble based on the information obtained from the user and by driving the machine your-
self. Also remember that once the machine has been disassembled, it is almost impossible to reproduce the con-
ditions of the trouble, and so there will be no second chance to find out the true cause. Therefore be sure to find
the true cause of the trouble before attempting disassembly.
2. When multiple causes are suspected, start with the simplest one.
3. Think why the trouble occurred and try to correct the root cause of the problem.
To Next Page
Loading...
Need help?
General
