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2.
With bottom spark plugs removed from the cylinders. hand
tllrn propeller several revolutions to clear excess preservative oil.
then rc-install spar k plugs:
3.
Conduct normal start-up procedure.
4.
Give the aircraft a thorough cleaning and visual inspection. A
test flight is recommended.
INDEFINITE STORAGE
Preparation for Storage
I.
Drain the engine oil and refill with MIL-C-6529 Type II. Start
engine and run until normal oil and cylinder head temperatures are
reached. The preferred method \vould be to fly the aircraft for thirty
(0) minutes. Allow engine to cool to ambient temperature.
Accomplish steps I and 2 of "Temporary Storage':
NOTE ... M I L-C -6529 Type" may be formulated by thoroughly
mixing one part compound MIL-C-6529 Type I (Esso Rust-Ban
62R. Cosllloline No. 1223 or equivalent) with three parts ne\'.'
lubricating oil of the grade recommended for service (all at room
temperature). Single grade oil is recommended.
')
Apply preservative to engine interior by spraying MIL-L-
46002. Grade I oil (approximately two ounces) through the oil filler
tube.
3.
Install dehydrator plugs MS27215-1 or -2, in each of the top
spark plug holes. making sure that each plug is blue in color when
installed. Protect and support the spark plug leads with AN-4060
protectors.
4.
If the engine is equipped with a pressure type carburetor.
preserve this component by the following method. Drain the
carburetor by removing the drain and vapor vent plugs from the
regulator and fuel control unit. With the mixture control in "Rich"
position, inject lubricating oil grade 1010 into the fuel inlet at a
pressure not to exceed 10 p.s.i. until oil flows from the vapor vent
opening. Allow excess oil to drain, plug the inlet and tighten and
10-5
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