TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 THEORY OF OPERATION — Continued 0003 00 AIR INDUCTION AND EXHAUST SYSTEMS Air for M548A1 engine combustion is drawn and filtered through an air cleaner container mounted on the transverse beam. Air enters the air cleaner through an opening in the head and filters through the air cleaner filter element. It then flows into the engine blower through an engine air intake horn between the engine air intake and air cleaner. The restriction indicator hose connects to the air cleaner indicator in the cab area. When the air cleaner element gets too dirty or dusty, the restriction of air causes the air cleaner indicator to register the change. Air is discharged at the opposite side of the engine blower, creating air pressure in the air box under the engine blower. Pressurized air blows through ports in the engine cylinders. Exhaust gases are removed and fresh air for combustion is supplied. 0003 00-5 Change 1