TM 5-4320-306-10
2-9. OPERATION IN EXTREME HEAT (Continued)
f. Air Cleaner. High am bent temperatures change density of air used by the engine in combustion. Monitor
engine's ability to breathe using the air cleaner intake restriction indicator. Air filter elements should be changed at first
indication of unacceptable restriction of air flow.
WARNING
Death or serious Injury could occur if diesel fuel oil Is not handled carefully. Use In a well-
ventilated area away from open flame, arcing equipment, ignition sources, heaters, or excessive
heat. Be certain that fuel lines and connections are secure. Do not Inhale vapor. Do not overfill
fuel tank. Engines must be turned off and cooled before fueling. Use proper refueling procedures
and equipment to avoid spillage. Do not run engines near open fuel containers. DO NOT SMOKE.
g. Fuel. Fill the fuel tank at the end of each day of operation in order to prevent an accumulation of vapor in the
fuel tank. However, do not overfill. Allow room for fuel expansion.
h. Batteries. Increase battery PMCS frequency. Use distilled water or a good grade of drinking water I
(excluding mineral water) to bring electrolyte to proper level.
2-10. OPERATION IN RAINY OR HUMID CONDITIONS
WARNING I
Death or serious Injury could occur if diesel fuel oil Is not handled carefully. Use in a well-
ventilated area away from open flame, arcing equipment, Ignition sources, heaters, or excessive
heat. Be certain that fuel lines and connections are secure. Do not Inhale vapor. Do not overfill
fuel tank. Engines must be turned off and cooled before refueling. Use proper refueling
procedures and equipment to avoid spillage. Do not run engines near open fuel containers. DO
NOT SMOKE.
a. Check that fuel tank filler cap is tight and gasket is not torn. Fill fuel tank immediately after every operating
period to prevent condensation.
b. Take special care to prevent rust and corrosion. Coat machined surfaces with oil. Contact organizational
maintenance to remove any rust or corrosion, and cover the exposed surfaces with paint.
2-11. OPERATION IN HIGH ALTITUDES
The centrifugal pump unit will operate normally at elevations up to 9000 feet (2743. 2 ml above sea level. Above 9000
feet (2743. 2 ml, the operating efficiency of the engine is reduced. Make sure that engine is operating at peak
efficiency.
2-12. OPERATION IN SANDY OR DUSTY AREAS
The engine cover of the pump unit is designed to protect the engine during periods of blowing sand. When operating the
pump unit in this type of environment, observe the following precautions.
a. Protect the unit from blowing sand and dust as much as possible.
Change 2 2-66
