TM 5-3805-281-24-1
Operational Checkout Procedure
FAN DIRECTION CHECK
Is fan installed correctly with concave (cupped) side
YES: Check complete.
(arrow) of fan blade towards engine?
NO: Install fan correctly.
NOTE: If fan is installed backwards, about 50% of its
capacity is lost.
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RADIATOR OUTSIDE AIR
Inspect radiator screen for mud and debris.
YES: Go to next check.
FLOW CHECK
Inspect radiator fins for mud and debris.
NO: Clean screen. Clean
outside of radiator.
Inspect radiator for bent or damaged fins.
Straighten fins. Replace
radiator if severely
damaged.
Are radiator fins free of mud, leaves, grass, and other debris?
Are fins straight, not broken or cracked?
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YES: Check complete.
FAN BELT CHECK
Is fan belt free of oil or grease?
NO: Replace belt if oily,
Is inside surface of belt free of cracks or frayed edges?
greasy, cracked, or
otherwise damaged.
Is belt aligned with pulleys?
NOTE: Fan belt is self-adjusting.
Is fan belt tightener operating to keep belt tight?
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