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To prepare the new, overhauled, or rebuilt engine for installation in the airframe:
CAUTION
DO NOT TURN THE CRANKSHAFT OF AN ENGINE WITH
PRESERVATIVE OIL BEFORE REMOVAL OF THE PLUGS FROM THE
BOTTOM SPARK PLUG HOLES. OTHERWISE ENGINE DAMAGE
CAUSED BY HYDRAULIC LOCK CAN OCCUR.
1. Lift the engine. Refer to the section "Lift the Engine" in the "Engine Reception and Lift" chapter
in this manual.
2. Complete the depreservation procedure as follows:
A. Remove desiccant bags.
B. During the procedure, if any of the dehydrator plugs (which contain crystals of silica gel)
break and the crystals fall into the engine, complete the following per the TEO-540-A1A
Engine Maintenance Manual:
• Disassemble the affected portion of the engine.
• Clean the engine.
C. Put a container under the engine to collect the cylinder preservative oil.
D. Remove the shipping plugs installed in the lower spark plug holes.
E. Remove the desiccant plugs from the upper spark plugs holes.
F. Turn the crankshaft completely three or four complete revolutions to remove the cylinder
preservative oil from the cylinders.
G. Collect the cylinder preservative oil as it drains out of the lower spark plug holes.
H. Tilt the engine to one side until the spark plug holes on that side are vertical.
I. Turn the crankshaft two revolutions and let the oil drain out through the spark plug holes.
J. Tilt the engine to the other side until the spark plug holes on that side are vertical.
K. Turn the crankshaft two revolutions and let the oil drain out through the spark plug holes.
3. Examine the cylinder bores with a borescope for rust and contamination. Refer to the TEO-540-
A1A Engine Maintenance Manual.
4. If any corrosion or unusual conditions are found, contact Lycoming Engine's Technical Support
Department at the email or phone number in the front of this manual.
5. 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 plugs. Discard the safety
wire/cable.
C. Remove the two oil sump drain plugs
(Figure 1).
D. Drain the remaining preservative oil
from the oil sump into the container.
Requirements for Engine Installation
Page 26
TEO-540-A1A Engine Installation and Operation Manual
Oil Sump Drain Plugs and Oil Suction Screen
© 2018 Avco Corporation. All Rights Reserved
Figure 1
October 2018
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