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 TB 740-97-4
(a) Gasoline starting engines. A portable container with two compartments will be positioned to provide gravity feed to the
engine. One compartment will contain gasoline and the other compartment will contain type P-9 preservative oil The flexible line
from the portable container will be connected to the engine fuel pump intake line. The engine fuel return line will be disconnected at
the quick disconnect coupling. A transparent plastic line will be connected to the disconnected engine fuel return line and the other
end will be inserted into a recovery container to collect the returned fuel. Another portable container will be provided and will contain
type P-9 preservative oil. The diesel or multifuel engine fuel supply line will be disconnected at the most convenient point nearest the
fuel pump. The line from the portable container will be connected to the fuel-to-engine line at the point of disconnect. Controls will be
positioned for gasoline operation. The three way valve of the two compartment container will be turned to the gasoline "ON" position.
The engine will be started and operated until running smoothly. The engine speed will then be increased to 3A speed and the
container selector valve turned to the preservative oil "ON" position. Engine will be operated until it begins to misfire, and the engine
controls will immediately be switched to diesel or multifuel operation. The engine will be operated at 1/2 speed until undiluated
preservative oil is flowing into the recovery container. The engine will then be increased to 3A speed for approximately 15 seconds
and the engine then turned off. Portable container valves will be turned to "OFF" position and the lines disconnected from the engine
fuel intake lines. The engine fuel intake lines will be reconnected. The temporary fuel return line will be disconnected and the
permanent fuel return line reconnected. Fuel filters and sediment bowls will be drained. (The recovered fuel oil mixture will not be
used to preserve other fuel systems).
(b) Straight diesel and multifuel engines. The engine fuel intake line will be disconnected at the most convenient accessible
point nearest the fuel supply tank. A line from a portable container containing fuel conforming to VV-F-800 will be connected to the
fuel intake line leading to the engine. The injector fuel return line will be disconnected at the disconnect coupling. A transparent line
will be connected to the injector fuel return coupling to allow for draining into a recovery container The fuel valve of the portable
container will be turned to the "ON" position. The engine will be started and operated at fast idle until thoroughly warm. The engine
will then be accelerated to 3/4 speed, at which time the fuel supply will be switched to the portable container containing type P-9
preservative oil. The engine will be operated at this speed until undiluted preservative oil is flowing into the recovery container. The
engine will then be stopped. The temporary fuel return line will be disconnected and the permanent fuel return line reconnected. The
temporary fuel intake line will be disconnected and the permanent fuel intake line reconnected. Fuel filters and sediment bowls will be
drained. (The recovered fuel oil mixture will not be used to preserve other fuel systems).
(c) Gasoline starting auxiliary (pony) engines. After the attached diesel or multifuel engine has been preserved, the gasoline
engines will be disengaged from the diesel or multifuel engine. The gasoline engine fuel system, combustion chambers, and valves
will then be preserved as specified for spark ignition engines.
e. Combustion Chambers and Valves.
(1) Spark ignition engines. After completion of the fuel system preservation, the engine will be allowed to cool to a cylinder
head temperature of a maximum 100F, measured at the spark plug area of all cylinders. Cooling may be accelerated by induced
air currents. After the engine has cooled, the spark plugs will be removed. Care will be exercised to avoid damage to the threads,
electrodes and gaskets. While cranking the engine with the starting motor, one half of the determined amount (a above) of P-10,
preservative lubricating oil, type I or II, grade 30 will be atomized sprayed into each cylinder through each spark plug opening. The
nozzle will be inserted into the combustion chamber and maximum air pressure for spraying will not exceed 25 psi. Without cranking
the engine, the additional one half of the determined amount of the preservative lubricating oil specified will be atomized sprayed into
each cylinder through each spark plug opening, after which the crankshaft will not be rotated. The spark plug threads will be coated
with the preservative lubricating oil specified herein. The spark plugs will be reinstalled. A tag will be prepared indicating: "ENGINE
PRESERVED-DO NOT CRANK UNTIL ISSUED TO THE USER". The tag will be attached near the engine start control switch.
(2) Compression ignition engines (diesel and multifuel). After the engines have cooled to a cylinder head temperature of
100 . or less, measured at the injector nozzle flange area surfaces of each cylinder, the combustion
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