TEO-540-C1A Engine Maintenance Manual
© 2018 Avco Corporation. All Rights Reserved
12-30
November 2018
Page 97
TEO-540-C1A Engine Maintenance Manual
Table 1 (Cont.)
Fault Isolation Guide
Problem
Cause
Corrective Action
Ref.
High oil pressure
(Cont.)
Incorrect weight of oil
used
Use the recommended viscosity
of oil for the ambient
temperature.
IOM
Appendix A
Oil passage is blocked
from the pressure relief
valve to the sump
1.
Remove the pressure relief
valve from the engine.
2.
Push a soft copper wire
through the oil passage to
the oil sump to remove
blockage.
NOTICE:
If blockage
continues, remove the oil sump
and clean the passage.
72-50
Relocated oil pressure
take-off point on the
engine
Use only the approved oil
pressure take-off point.
Oil temperature is too
cold
Before increasing the power
control, allow the oil
temperature to increase.
Oil pressure incorrectly
adjusted
Decrease the oil pressure by
turning the pressure adjustment
on the oil pressure relief valve
counterclockwise per the “Oil
Pressure Adjustment”
procedure.
72-50
Incorrect weight of oil
used
Use the recommended viscosity
of oil for the ambient
temperature per the latest
revision of Service Instruction
No. SI-1014.
Oil passage is blocked
from the pressure relief
valve to the sump
1.
Remove the pressure relief
valve from the engine.
2.
Push a soft copper wire
through the oil passage to
the oil sump to remove
blockage.
NOTICE:
If blockage
continues, remove the oil sump
and clean the passage.
3.
Reinstall the oil pressure
relief valve.
72-50
