TM 5-3805-280-24-1
Operational Checkout Procedure
9 FUEL SYSTEM CHECKS
9005
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36
FUEL TANK INTERIOR
IMPORTANT: Be careful not to damage fuel gauge sender float or low fuel level
YES: Drain fuel, dispose
CHECK
sending unit.
of contaminated fuel
properly. Remove debris,
clean bottom of tank.
Remove fuel cap.
Replace fuel filters.
Check water separator.
Use a flashlight to inspect bottom of fuel tank by shining light through the fuel.
NO: Go to next check.
Is dirt, debris, or contamination seen in tank?
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FUEL TANK SUMP
A--Fuel Tank Drain Valve
YES: Drain until clear fuel
CHECK
flows or drain all fuel from
Hold a clean container under fuel tank drain valve (A).
tank, dispose of
contaminated fuel
properly. Replace fuel
Remove recessed hex plug.
filters, check water
separator.
Open drain valve for a few seconds and catch fuel in
container.
NO: Go to next check.
T7700AA
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Check condition of fuel in container.
Is water present or is fuel cloudy?
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PRIMARY FUEL FILTER
Inspect fuel in primary fuel filter (water separator).
YES: Replace primary
(WATER SEPARATOR)
fuel filter element.
CHECK
Is water or other contamination present?
NO: Go to next check.
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