TM 5-3805-280-24-1
System Operational Checks
FAN DIRECTION CHECK
Is fan installed correctly with cupped portion side (Arrow)
YES: Go to next check.
of fan away from radiator?
NO: Install fan correctly.
NOTE: If fan is installed backwards, about 50% of its
capacity is lost.
T6488GB
UN23AUG93
9010
10
5
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FAN SHROUD AND FAN
Check clearance between fan and fan shroud.
YES: Go to next check.
GUARD CHECK
Is fan centered in shroud?
NO: Adjust fan shroud if
fan is not centered.
Is guard free of damage?
Repair or replace guard.
Tighten loose hardware.
Replace fan shroud if
Are all mounting brackets and hardware tight?
needed.
T6488GC UN23AUG93
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FAN BELT CHECK
Is fan belt free of oil or grease?
YES: Go to next check.
Is inside surface of belt free of cracks or frayed edges?
NO: Replace fan belt if
oily, greasy, cracked or
otherwise damaged.
Is belt aligned with pulleys?
Repair or replace
NOTE: Fan belt is self-adjusting.
tightener if belt is loose.
Is fan belt tightener operating to keep belt tight?
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