TM-9-2350-275-BD Battlefield Damage Assessment and Repair for M113 Family Download
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TM 9-2350-275-BD ENGINE SECTION III. Engine Air Intake System 3-5. General. The M113 air intake system consists of the air filter and housing, duct tubing, and a roots type blower assembly. The air cleaners has a removable filter element and draws air from the engine compartment. The air is ducted through a spring reinforced fiber tube to the blower air horn. The roots blower pressurizes the air and feeds it to the engine air box. Restrictions or air leaks will affect the engine operation or durability. Dirt ingestion will cause rapid wear to the engine internal components. The M113 vehicle air intake system comprises aluminum castings, flexible hose, and aluminum canisters for the air cleaner. Figure 3-6. AIR CLEANER DAMAGED General Information 3-1. Air Intake Dirt ingestion into engine caused by damaged air cleaner cannister or hoses. Internal location of air cleaner makes it less likely to incur battle damage. Engine will operate properly without the intake hose and cleaner, if necessary, but air should be drawn from crew compartment to keep as much dirt as possible out of the engine. Unfiltered air will cause dirt ingestion damage. Limitation ● Possible degraded performance 3-4