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WARNING ... When returning the aircraft to service do not use the
corrosion preventive oil referenced in "INDEFINITE STORAGE':
paragraph 1 for more than 25 hours.
3.
If the carburetor has been preserved with oil. drain it by
removing the drain and vapor vent plugs from the regulator and fuel
control unit. With the mixture control in "Rich" position, inject
service type gasoline into the fuel inlet at a pressure not to exceed 10
p.s.i. until all of the oil is flushed from the carburetor. Re-install the
carburetor plugs and attach
th~
fuel line.
4.
With bottom plugs removed, rotate propeller to clear excess
preservative oil from cylinders.
5.
Re-install the spark plugs and rotate the propeller by hand
through the compression strokes of all the cylinders to check for
possible liquid lock. Start the engine in the normal manner.
6.
Give the aircraft a thorough cleaning, visual inspection and test
flight per airframe manufacturer's instructions.
INSPECTION OF AIRCRAFT STORED PER INDEFINITE
STORAGE PROCEDURES:
I.
Aircraft prepared for indefinite storage should have the
cylinder dehydrator plugs visually inspected every 15 days. The
plugs should be changed as soon as their color indicates unsafe
conditions of storage. If the dehydrator plugs have changed color in
one-half or more of the cylinders, all desiccant material on the
engine should be replaced.
2.
The cylinder bores of all engines prepared for indefinite storage
should be re-sprayed with corrosion preventive mixture every six
months, or more frequently if bore inspection indicates corrosion
has started earlier than six months. Replace all desiccant and
dehydrator plugs. Before spraying, the engine should be inspected
for corrosion as follows: Inspect the interior of at least one cylinder
on each engine through the spark plug hole. If cylinder shows start
of rust, spray cylinder corrosion preventive oil and turn prop over
six times, then re-spray all cylinders. Remove at least one rocker
box cover from each engine and inspect the valve mechanism.
10-7
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