Lycoming TEO-540-C1A Maintenance Manual page 100

To complete the pre-oil procedure:
A. If not already done, fill the oil sump with clean engine oil to the correct level per the "Add
Oil to the Engine" procedure in section 2 in this chapter.
B. Make sure that the Ignition switch, Auxiliary Fuel Pump switch, and Fuel Selector are all in
the OFF position.
C. Disconnect the oil supply line from the top of the turbocharger.
D. Disconnect the engine air duct from the compressor housing inlet.
E. Fill the turbocharger oil inlet port with clean engine oil and manually turn the compressor
wheel several revolutions in both directions to apply a coat of oil to all journal and bearing
surfaces.
F. Reconnect the oil supply line to the top of the turbocharger.
G. Reconnect the engine air duct to the compressor housing inlet.
H. Fill the oil cooler with oil.
I. Per the "Spark Plug Removal" procedure in Chapter 74-20, disconnect the ignition leads
from all spark plugs and remove one spark plug from each cylinder of the engine. Remove
and discard the spark plug gasket.
J. Move the power control to the FULL OPEN position.
CAUTION
K. Pre-oil start cycle: Energize the starter for 10 to 15 seconds and look for evidence of oil
pressure of at least 20 psi (138 kPa) within 10 to 15 seconds.
If there is no oil pressure within 10 to 15 seconds, stop energizing the starter. Wait at least 30
seconds and repeat the pre-oil start cycle.
Up to six consecutive pre-oil start cycles can be done. Afterwards let the starter cool for 30
minutes. If stable oil pressure is not achieved, stop pre-oiling and contact Lycoming Engines.
NOTICE: Unstable oil pressure or oil pressure less than 20 psi (138 kPa) could be an
indication of obstructed or interrupted oil flow or air in the oil lines.
L. If oil pressure of at least 20 psi (138 kPa) was sustained in the previous step, repeat the pre-
oil start cycle to make sure oil pressure holds stable and that there is no sudden drop in oil
pressure. If oil pressure is not stable or drops suddenly, stop pre-oiling, identify and correct
the cause.
NOTICE: Install a new spark plug gasket whether a new or acceptable re-used spark plug is to
be installed.
M. Once the minimum oil pressure of 20 psi (138 kPa) is shown on the oil pressure gage, re-
install the spark plugs each with a new gasket as per the "Spark Plug Installation" procedure
in Chapter 74-20.
12-10
Page 70
DO NOT ENERGIZE THE STARTER FOR PERIODS OVER 10 TO 15
SECONDS. LET THE STARTER COOL FOR 30 SECONDS AFTER EACH
ENERGIZATION. IF THE STARTER FAILS TO ENERGIZE AFTER
TWO ATTEMPTS, IDENTIFY AND CORRECT THE CAUSE PER THE
AIRFRAME MANUFACTURER'S MAINTENANCE MANUAL.
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
© 2018 Avco Corporation. All Rights Reserved
November 2018