TROUBLESHOOTING
Preparation Before Troubleshooting
13-4 6LY3 Service Manual
© 2007 Yanmar Marine International
PREPARATION BEFORE
TROUBLESHOOTING
It is important to diagnose and correct the cause of
trouble symptoms early in order to prevent a major
engine failure. At the first sign of a problem
investigate the cause, correct it and prevent any
recurrence.
Organize the available data in order to understand
the possible cause of the problem.
1. What is the exact symptom of the trouble?
2. Read the client control ledger and examine the
history of the engine.
3. Get the engine model and serial number.
4. Get the vessel model and serial number in
which the engine is installed.
5. When was the last time the engine was
serviced?
6. How many hours of operation since the last
service interval and what was done?
7. Has the problem ever occurred before and what
was the resolution?
8. When did the symptom or failure happen?
9. Did anything change or did anything unusual
happen before the occurrence?
10. Was it sudden or gradual?
After narrowing down the possibilities, use the most
appropriate troubleshooting guide from this
manual, isolate the cause and correct it.
Teleflex Display Indications
DTC: Diagnostic Trouble Code
FMI: Failure Mode Identifier
Refer to the Electronic Control System Operation
Manual for more information about the DTC screen.
To Next Page
Loading...
