Lycoming TEO-540-C1A Maintenance Manual page 120

Problem
Engine will not supply
the rated power
(Cont.)
Engine smokes
excessively
NOTICE: An engine
regularly smokes if it
is idling for an
extended period.
Engine hesitates,
misses
12-30
Page 90
Table 1 (Cont.)
Fault Isolation Guide
Cause
Oil pressure too low
Inlet orifice to actuator is
clogged.
Malfunction of exhaust
bypass control valve
Exhaust bypass valve
butterfly is not closing
Turbocharger impeller
binding, frozen or fouling
housing
Piston seal in actuator is
leaking
NOTICE: Usually
accompanied by oil
leakage at drain line.
Fuel injector clogged
Air in oil hoses or actuator Bleed the system.
Breather is clogged
Exhaust bypass valve is
not opening correctly
Valve sticking
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Corrective Action
1. Tighten fittings.
2. Replace oil hoses.
3. Increase oil pressure as
necessary.
Remove the inlet line at the
actuator and clean the orifice.
Replace the exhaust bypass
control valve.
1. Examine orifice inlet to
actuator for blockage.
2. Clean as necessary.
3. Examine the butterfly shaft
for binding.
1. Examine the shaft play and
contact with housings for
binding.
2. If contact is present, replace
the turbocharger.
Remove and replace the
actuator or disassemble and
replace the packing.
Replace the clogged fuel injector.
Make sure that nothing is
blocking the air flow.
Examine the exhaust bypass
valve to make sure that the shut
off valve in the return line is
operating correctly.
Refer to "Corrective Action for
Valve Sticking."
© 2018 Avco Corporation. All Rights Reserved
Ref.
72-50
72-40
73-10
72-30 &
05-50
November 2018