TM 5-4320-306-10
2-8. OPERATION IN EXTREME COLD (Continued)
CAUTION
Drain the pump volute after operation to prevent freezing.
f. Drain pump after use to prevent water in pump from freezing. Remove pump body drain plug (1). Remove all
fluid from pump body. Crank engine briefly to complete draining. Replace drain plug.
NOTE
The drain plug has a 1-5/16 inch square head and can be removed with a standard tool.
g. Cover centrifugal pump unit with weather cover when not in use and shelter from weather, if possible.
2-9. OPERATION IN EXTREME HEAT
CAUTION
Poor air filtering and restrictions to air and exhaust flows are harmful to engine.
The engine of the centrifugal pump is air cooled.
Heat is removed from the engine through engine
exhaust, engine oil, and the passage of air across
and through the cylinder cooling fins. When
operating in high temperatures, observe the
following.
a. Intake duct. Inspect engine intake duct
(1). Check that acoustical panel (2) is securely
mounted and not blocking the blower intake
ducting. Check that the blower intake ducting is
not distorted or interfering with V-belt operation.
TM 5-4320-306-10
2-64
