Lycoming TEO-540-C1A Maintenance Manual page 126

Problem
High oil temperature
(Cont.)
High manifold
pressure at idle
High oil pressure
12-30
Page 96
Table 1 (Cont.)
Fault Isolation Guide
Cause
Leaks in engine induction
system
Oil cooler or oil cooler
lines are fully or partially
blocked
Too much cylinder blow-
by
Defective oil temperature
gage
Air leak in induction
system
Incorrect tappets or
hydraulic lifters were
installed
Relocated oil pressure
take-off point on the
engine
Oil temperature is too
cold
Oil pressure incorrectly
adjusted
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Corrective Action
Identify and correct the cause
of all leaks.
1. Remove the oil cooler and
oil cooler lines.
2. Clean and service the oil
cooler.
Complete a "Cylinder
Compression Check
Procedure."
1. Install the master
temperature gage and
operate the engine to
compare gages.
2. Replace the faulty gage if
necessary.
Complete the "Induction
System Inspection." Identify
and correct the cause of all
leaks.
NOTICE: If the induction
system has leaks, the engine
will idle rough.
Send the engine to Lycoming
Engines for evaluation.
Use only the approved oil
pressure take-off point.
Before increasing the throttle,
allow the oil temperature to
increase.
Decrease the oil pressure by
turning the pressure adjustment
on the oil pressure relief valve
counterclockwise per the "Oil
Pressure Adjustment"
procedure.
© 2018 Avco Corporation. All Rights Reserved
Ref.
72-80
&
AMM
AMM
72-30
AMM
72-80
&
AMM
72-50
November 2018