ENGINE COOLING AND AIR INDUCTION

TM 9-2350-261-10 ENGINE COOLING AND AIR INDUCTION - ALL CARRIERS Air for engine combustion and cooling is drawn through the intake grill and radiator. Air sweeps down around the power plant and out through the exhaust grill above the fan. An air control valve allows driver a choice of drawing air from the rear compartment or power plant compartment for the engine. During operation, air in the power plant compartment warms up (becomes less dense). Drawing cooler (more dense) air from the rear compartment gives the engine a boost in horsepower. When the vent is open to draw from the crew compartment, less air is being drawn through the radiator. In hot climates, it should only be opened for short periods. The air cleaner is equipped with a restriction indicator to inform the driver when the element needs cleaning. WARNING Failure to o p e n v e n t i l a- tor, when op- erating carrier with all hatches closed, will result in a serious lack of oxygen. CAUTION Avoid overheating of components during operation. Keep power plant door, access plates, and panels closed tightly for correct air flow. 1-37