TEO-540-C1A Engine Maintenance Manual
12-30
© 2018 Avco Corporation. All Rights Reserved
Page 92
November 2018
TEO-540-C1A Engine Maintenance Manual
Table 1 (Cont.)
Fault Isolation Guide
Problem
Cause
Corrective Action
Ref.
Low oil pressure
(Cont.)
High oil temperature
Examine the engine for these
conditions:
1.
Low oil level. Complete the
"Oil Level Check"
procedure.
12-10
2.
Incorrect grade/weight of oil
Refer to Appendix A.
IOM
3.
Oil cooler bypass valve
seating and operation
72-50
4.
Partial or full blockage in oil
cooler lines
5.
High cylinder head
temperature
6.
Excess blow-by
7.
Blockage in air duct to the
oil cooler.
AMM
Pressure relief valve is out
of adjustment
Per the “Oil Pressure
Adjustment” procedure, turn
the adjusting screw (on the oil
pressure relief valve) to adjust
oil pressure or change the
spring as necessary in the oil
pressure relief valve.
72-50
Dirt or metal chips under
the oil pressure relief valve
1.
Remove, disassemble, and
clean (remove dirt or metal
chips) the oil pressure
relief valve.
72-50
2.
Complete the “Oil Change
Procedure.”
12-10
3.
Complete a “Cylinder
Compression Check
Procedure.”
72-30
Blockage at inlet side of oil
pump
Remove and clean the oil
suction screen and oil passage
on the inlet side of the oil
pump. Refer to the section
"Oil Suction Screen Removal/
Inspection/Cleaning/
Installation.”
12-10
