Lycoming IO-390-D Series Installation And Operation Manual page 33

IO-390-D Series Engine Installation and Operation Manual
CAUTION IF PRESERVATIVE OIL TOUCHES PAINTED SURFACES, REMOVE THE
OIL IMMEDIATELY TO PREVENT DAMAGE TO THE PAINT.
NOTICE: To touch-up paint, refer to Chapter 72-10 in the IO-390-D Series Engine Maintenance
Manual.
8. Complete the preservative oil removal procedure as follows:
A. Turn the crankshaft through three or four revolutions to remove the cylinder preservative oil
from the cylinders.
B. Collect the cylinder preservative oil as it drains out of the lower spark plug holes.
C. Tilt the engine to one side, until the spark plug holes on that side are vertical.
D. Turn the crankshaft two revolutions and let the oil drain out through the spark plug holes.
E. Tilt the engine to the other side until the spark plug holes on that side are vertical.
F. Turn the crankshaft two revolutions and let the oil drain out through the spark plug holes.
9. Examine the cylinder bores with a borescope for rust and contamination. Refer to Chapter 72-30
in the IO-390-D Series Engine Maintenance Manual.
10. If any corrosion or unusual conditions are found, speak to Lycoming Engine's Service
Department.
11. Drain preservative oil from the oil sump:
A. Put a 15-quart (14-liter) capacity container under the oil sump.
B. Remove the safety wire/cable from the oil sump drain plug. Discard the safety wire/cable.
C. Remove the oil sump drain plug.
D. Drain the remaining preservative oil from the oil sump into the container.
NOTICE: If some preservative oil stays in the engine, it will not damage the engine. The
preservative oil will be removed after the first 25 hours of operation during the oil
change.
E. Remove, examine, clean, and reinstall the oil suction screen per the "Oil Suction Screen
Removal/Inspection/Cleaning/Installation" section in Chapter 12-10 of the IO-390-D Series
Engine Maintenance Manual.
F. Apply one to two drops of Loctite
the oil sump drain plug in the oil sump. Torque the drain plug in accordance with the latest
revision of the Service Table of Limits - SSP-1776.
CAUTION
G. Safety wire/cable the oil sump drain plug in accordance with the standard practices per the
latest revision of AC43.13-1B or the latest revision of Service Instruction No. SI-1566.
12. Remove the oil filter and install a new oil filter. Refer to Chapter 12-10 in the IO-390-D Series
Engine Maintenance Manual.
© 2020 Avco Corporation. All Rights Reserved
March 2020
®
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MAKE SURE THAT THE OIL SUMP DRAIN PLUG AND THE SUCTION
SCREEN PLUG ARE INSTALLED TIGHTLY. IF THE DRAIN PLUG
AND SCREEN PLUG ARE NOT TIGHTLY INSTALLED AND LEAK,
ENGINE FAILURE CAN OCCUR.
™
to the threads of the oil sump drain plug and install
Requirements for Engine Installation
Page 13