TM 9-2350-261-10ENGINE COOLING AND AIR INDUCTION - ALL CARRIERSAir for engine combustion and cooling is drawn through the intake grill andradiator. Air sweeps down around the power plant and out through the exhaust grillabove the fan. An air control valve allows driver a choice of drawing air from therear compartment or power plant compartment for the engine. During operation, airin 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 drawnthrough the radiator. In hot climates, it should only be opened for short periods. Theair cleaner is equipped with a restriction indicator to inform the driver when theelement needs cleaning.WARNINGFailure too p e n v e n t i l a-tor, when op-erating carrierwithallhatches closed,will result in a serious lackof oxygen.CAUTIONAvoid overheating of components during operation. Keep power plant door, accessplates, and panels closed tightly for correctair flow.1-37
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