Fuel Injector Preservation; Engine Preservation - 61 To 180 Days - Lycoming IO-360-N1A Installation And Operation Manual

F. Apply seals and tape to areas of the engine exposed to the air.
G. Put a note on the propeller that reads: "Engine preserved - DO NOT TURN THE
PROPELLER."
H. At 15-day intervals, examine the desiccant in the desiccant bags and the cylinder
dehydrator plugs (if installed). When the color of the desiccant has changed from blue to
pink, remove the used desiccant bags and plugs. Install new desiccant bags and cylinder
dehydrator plugs (if used). Record the date (for future reference) when the desiccant bags
and/or plugs were installed.

Fuel Injector Preservation

Refer to the fuel component manufacturer's instructions for preservation of fuel injectors.

Engine Preservation - 61 to 180 Days

New, rebuilt, and overhauled engines from Lycoming Engines have preservation oil for 60 days per
the tag on the outside of the engine box. The date of preservation is shown on the sticker on the
outside corner of the engine box with the gross weight or the date written on the top of the box
following a "Preservation Date" stamp.
NOTICE: Corrosion is warrantable only during the specified preservation period.
If at the end of the specified preservation period, the engine is to stay in storage, complete the
following inspection, (although this inspection does not extend the corrosion warranty.)
1. After the first 60 days, and every 60 days thereafter up to 180 days, complete a borescope
inspection of each engine cylinder one at a time as follows:
A. Remove the top and bottom spark plugs from each cylinder, one cylinder at a time. Refer
to Chapter 74-20 in the IO-360-N1A Engine Service Manual.
B. Turn the crankshaft until the piston is at the bottom dead center.
NOTICE: Do not turn the crankshaft any further during the borescope evaluation.
C. Use a 4x borescope with a 70 degree angle of view, or equivalent internal examining
device to examine each cylinder for evidence of corrosion. The diameter of the borescope
must be smaller than the diameter of the spark plug hole. If corrosion is found, refer to
Chapter 72-30 in the IO-360-N1A Engine Maintenance Manual.
D. Install the top and bottom spark plugs in the cylinder each with a new gasket per Chapter
74-20 in the IO-360-N1A Engine Service Manual.
E. Remove the rocker box covers per Chapter 72-30 in the IO-360-N1A Engine Service
Manual and look for any evidence of corrosion.
F. After the inspection is complete, install the rocker box covers. Refer to Chapter 72-30 in
the IO-360-N1A Engine Service Manual.
G. Remove the accessories. Examine the drives and shafts for moisture or corrosion. Refer
to the IO-360-N1A Engine Maintenance Manual.
H. When the inspection is complete, install the accessories.
2. Repeat the previous inspection steps for each cylinder on the engine
Engine Preservation and Storage
Page 42
IO-360-N1A Engine Installation and Operation Manual
© 2016 Avco Corporation. All Rights Reserved
February 2016