THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
Effective: 01/01/08
2-21
Table 2-1: ENGINE PRESERVATION PROCEDURES
(Continued)
Engine Installed:
OPERATION PROCEDURE
10 to 30
Days
Over 30
Days
Engine
not
Installed:
Carburetor
opening in the
rear case
When the carburetor is removed from the
engine, secure two ½ pound bags of
dehydrating agent to the inside of the
carburetor mounting flange cover. Secure
the cover to the flange, using acid-free
waxed paper as a gasket between the cover
and the flange. Seal the parting line of the
cover and flange with tape.
X X X
External
Inspection
Inspect the engine carefully, checking all
nuts and bolts for tightness. Inspect for
loose or broken safety wire, missing plugs,
or damaged parts. Make certain that the
intake pipes are tight at both ends.
X X
Warning Tag
Place a warning tag on the propeller shaft
and a similar tag in the airplane cockpit,
stating that the propeller or the propeller
shaft must not be turned until all the
dehydrating materials have been removed
from the engine.
X X X
Inspection
All dehydrator plugs must be inspected
every seven days and the color of the
dehydrating agent compared with that on
the humidity indicator. Any plugs, indicating
a relative humidity of more than 20 percent
are unsafe and should be replaced. When it
becomes necessary to replace a dehydrator
plug, the dehydrating agent in the exhaust
pipes and in the carburetor mounting flange
cover should also be replaced. If frequent
replacement of a particular plug becomes
necessary, the section of the engine in
which that plug is located should be
checked for inadequate sealing.
X X X
