THEORY OF OPERATION Continued
EXHAUST SYSTEM AND COMPONENTS
Burned fuel fumes from M548A1 carriers are exhausted through the right and left crossover pipes, into the muffler, and out
the exhaust pipe. The crossover pipes extend from the rear of the right and left exhaust manifolds to the main exhaust pipe.
The crossover pipes are joined together by sliding joints with a ball-and-socket type joint on the main exhaust pipe.
The exhaust muffler is bolted in the power plant compartment on the M548A1. An exhaust pipe (exhaust stack assembly)
extends above the top of the exhaust well on both carriers. The exhaust pipe has a guard and a cap.
The M548A3 major exhaust system parts are the turbocharger, exhaust manifolds, and muffler. The turbocharger is driven by
exhaust gases from the engine. The turbocharger helps the engine develop more power and operate more efficiently. The
exhaust manifolds carry the exhaust gases to the turbocharger from the engine. The muffler cuts down engine noise and
allows exhaust to escape outside the carrier.