Section II. OPERATION UNDER
of the engine. When the valve is open, it limits the
amount of air drawn over the engine for cooling it. The
The heater is designed to be used and will ordinarily
air control valve should be opened only when the outside
be operated in cold weather conditions. This section,
temperature is -20F, or lower.
however, contains the necessary operating in-
2-11 Operation in Dusty or Sandy Areas
structions in addition to those previously covered
which are necessary for the proper functioning of the
a. Keep dust and sand wiped from the heater.
heater under unusual conditions such as moderately
Take advantage of natural barriers as much as
and extremely cold weather. The operator should
maintain a closer check on the oil in the crankcase
b. Keep dust and dirt wiped from around the
during unusual weather conditions.
fuel filler cap.
c. Clean filter frequently.
2-9 Moderately Cold Weather
d. Wipe excess fuel and oil from the metal
In moderately cold weather (32 to 0F) the engine
parts of the heater.
might be difficult to start and will require additional
2-12 Operation Under Rainy or Humid
choking through the warm-up period.
2-10 Extremely Cold Weather
a. Keep cap closed tightly on fuel tank.
In extremely cold weather (below 0F) preheat the
b. Shield the heater from rain as much as
engine with the winterization torch depicted in
c. Keep heater stored in an enclosure when
a. Pull the choke all the way out and slowly turn
not in use.
the engine through 6 or 7 revolutions.
d. Wipe moisture from heater when operation
b. Set the choke in half-open position and crank
the engine vigorously.
Operation in Salt Water Areas
c. Reduce the amount of choke slowly as the
a. Keep the heater covered or in a protective
engine warms up.
area when not in use.
d. Operate the heater first with the discharge
b. Wipe salt water from the heater with clean
opening dampers at half-closed position, and if this
cloth dampened with fresh water frequently.
is insufficient then close the dampers fully.
c. Do not permit salt crystals to enter the fuel
tank, wipe salt crystals from mouth of tank
The MIL-STD model 1 A08-3 engine is equipped with an
air control valve, mounted in the lower air duct assembly