Attached table: fault cause and remedy
1. Oil level in oil sump is too low Check oil leakage, add oil
2. Faults in pressure regulating
valve of main oil passage
Check valve clean and repair
3. Strainer, oil pipes, connector
gasket choked or broken
Check strainer and connector check
if there is any sponge in oil passage
repair
4. Lub-oil doesn’t conform to
specications
Renew the lub-oil according to
requirements
5. Intake pipe of oil pump leaked
Check the oil pipe and connector
repair or replace
6. Water temperature in cooling
system and oil temperature is
too high
Check cooling system and correct it
7. Excessive resistance of oil lter Renew the lter element
8. Oil cooler choked Check and clean
9. Main oil passage choked Check and clean
10. The clearance of bearing is
too large or bearing damaged
Check and replace
11. Excessive wear of parts need
to overhaul
Check the working time of the
engine, overhaul
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