LYCOMING OPERATOR’S MANUAL
SECTION 6
O-360 AND ASSOCIATED MODELS
TROUBLE-SHOOTING
TROUBLE
PROBABLE CAUSE
REMEDY
Engine Will Not Deliver
Excessive dirt build-up in
Thoroughly clean compressor
Rated Power (Cont.)
compressor
assembly. Service air cleaner and
checkfor leakage.
Rotating assembly bearing seizure
Overhaul turbocharger.
Restrictions in return lines from
Remove and clean lines.
actuator to waste gate controller
Exhaust bypass controller is in
Have exhaust bypass controller
need of adjustment
adjusted.
Oil pressure too low
Tighten fittings. Replace lines or
hoses. Increase oil pressure to
desired pressure.
Inlet orifice to actuator clogged
Remove inlet line at actuator and
clean orifice.
Exhaust bypass controller
Replace unit.
malfunction
Exhaust bypass butterfly not
Low pressure. Clogged orifice in
closing
inlet to actuator.
Butterfly shaft binding. Check
bearings.
Turbocharger impeller binding,
Checkbearings. Replace
frozen or fouling housing
turbocharger.
Piston seal in actuator leaking.
Remove and replace actuator or
(Usually accompanied by oil
disassemble and replace packing.
leakage at drain line.)
Critical Altitude Lower Than
Controller not getting enough oil
Checkpump outlet pressure, oil
Specified
pressure to close the waste gate
filters, external lines for leaks or
obstructions.
Chips under metering valve in
Replace controller.
controller holding it open
Metering jet in actuator plugged
Remove actuator and clean jet.
Actuator piston seal failed and
If there is oil leakage at actuator
leaking excessively
drain, clean cylinder and replace
piston seal.
6-5
