ARMY TM 9-6115-464-12AIR FORCE TO 35C2-3-445-1NAVY NAVFAC P-8-624-121-18 AIRINTAKEANDEXHAUSTSYSTEM.a.b.The air intake and exhaust system (Figure 1–10) consists of a filter, restriction indicator, intake manifold,breather tube, exhaust manifold, muffler, and piping. Ambient air is drawn into an air filter where it passesthrough the filter element. Airborne dirt is removed and trapped in the filter. The air cleaner assembly isequipped with a condition transducer. The condition transducer measures the vacuum created by the aircleaner condition indicator or when the filter needs servicing. Filtered air is drawn out of the filter throughair intake tubes to the air intake manifold where it passes into the combustion chambers and is mixed withfuel from the injectors.The engine exhaust gases are expelled into the exhaust manifold. The exhaust manifold channels thegases into the muffler that deadens the sound of the exhaust gases. The gases pass from the mufflerthrough the exhaust piping and are vented upward from the generator set housing. The breather tubeprovides an escape route for gases which accumulate in the crankcase during engine operation. Thegases pass through the breather, located in the engine valve cover, and are expelled into the air cleanerhousing through the breather tube.Figure 1-10. Air Intake and Exhaust System1-20
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