re interior of the crankcase will be sprayed and the
used to preserve other fuel systems.)
(2) Compression-ignition engines (diesel and
interior of the crankcase will be sprayed with P-10
multifuel).
preservative lubricating oil, type I grade 30, while rotating
the engine crankshaft at least three complete
(a) Gasoline starting engines. A portable
revolutions.
container with two compartments will be positioned to
provide gravity feed to the engine. One compartment will
c. Cooling Systems.
contain gasoline and the other compartment will contain
Examination. Thoroughly examine the
(1)
type P-9 preservative oil. The flexible line from the
cooling system for faulty or deteriorated gaskets and
portable container will be connected to the engine fuel
rubber hose, leaks, rust, dirt, loose connections, and
pump intake line. The engine fuel return line will be
evidence of oil seepage into the system.
disconnected at the quick disconnect coupling.
A
(2) Cleaning. When cleaning is required, drain
transparent plastic line will be connected to the quick
the cooling system and clean with compound conforming
disconnected engine fuel return line, and the other end
to MIL-C-10597. Clean all sediment from the radiator
will be inserted into a recovery container to collect the
cap, drain cocks and engine block drains.
returned fuel.
Another portable container will be
(3) Preservation. Fill the cooling system with a
provided and will contain type P-9 preservative oil. The
clean premixed solution of 50 percent water and 50
diesel or multifuel engine fuel supply line will be
percent ethylene glycol conforming to FED-0-A-548, type
disconnected at the most convenient point nearest the
I. For storage in areas where the temperature drops
fuel pump. The line from the portable container will be
below -40F., the system will be filled with artic type
connected to the fuel-to-engine line at the point of
antifreeze conforming to MIL-C-11755. A warning tag
disconnect. Controls will be positioned for gasoline
will be placed on the filler neck stating: "COOLING
operation. The three-way valve of the two compartment
SYSTEM FILLED WITH ARTIC TYPE ANTI-FREEZE,
container will be turned to the gasoline ON position. The
DO NOT DILUTE".
engine will be started and operated until running
d. Fuel Systems.
smoothly. The engine speed will then be increased to
(1) Spark ignition gasoline engines.
3/4 speed and the container selector valve turned to the
(a) Engines with carburetors. A portable
preservative oil ON position. Engine will be operated
until it begins to misfire, and the engine controls will be
container with two compartments will be positioned to
immediately be switched to diesel or multifuel operation.
provide gravity feed to the engine. One compartment will
The engine will be operated at 1/2 speed until undiluted
contain gasoline and the other compartment will contain
preservative oil is flowing into therecovery container.
type P-9 preservative oil. The engines fuel supply line
The engine will then be increased to 3/4 speed for
will be disconnected at the most convenient point. A
approximately 15 seconds and the engine then turned
flexible line from the portable container will be connected
off. Portable container valves will be turned to OFF
to the fuel supply line leading to the engine. The
position and the lines disconnected from the engine fuel
container selector valve will be turned to the gasoline
intake lines. The engine fuel intake lines will be
position. The engine will be started and operated at fast
reconnected.
The temporary fuel return line will
idle until running, then accelerated to 3/4 speed without
disconnected and the permanent fuel return
load. At the same time the fuel supply selector valve will
reconnected. Fuel filters and sediment bowls will be
be switched to the preservative oil position. The instant
drained. (The recovered fuel oil mixture will not be used
the oil reaches the combustion on chambers (evidenced
to preserve other fuel systems).
by loss of speed, misfiring, and excessive smoking) the
b) Straight diesel and multifuel engines. The engine
ignition will be turned off. After the engine has stopped,
fuel intake line will be disconnected at the most
the line from the portable container will be disconnected
convenient accessible point nearest the fuel supply tank.
from the engine fuel supply line. The engine fuel supply
A line from a portable container fuel conforming to FED
line will be reconnected. Fuel filters and sediment bowls
VV-F-800 will be connected to the fuel intake line to the
will be drained.
engine. The injector fuel return line will be disconnected
(b) Engines with fuel injectors. The injector
at the disconnect coup-
fuel return coupling will be disconnected. A line will be
connected to the injector fuel return coupling on the
engine to permit draining into a recovery container. The
fuel system will then be preserved as specified in (a)
herein. (The recovered fuel and oil mixture will not be
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