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TM 10-4320-32414
c. Cleaning/Inspection .
WARNING
Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and gloves and use only in
a well ventilated area. Avoid contact with skin, eyes, and clothes and don't breathe vapor. Do not use
near open flame or excessive heat. The flash point is 100°F-138 F (38-50C). If you become dizzy while
using cleaning solvent, get fresh air immediately and get medical aid. If contact with eyes is made, wash
your eyes with water and get medical aid immediately.
(1)
Clean exterior and interior of fuel tank with cleaning solvent.
(2)
Flush fuel tank with continuous flow of clean water.
(3)
Perform fuel tank pressure check.
(a)
Connect air fitting to fuel inlet opening. Plug remaining fuel tank openings.
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi. Use only with effective chip guarding
and personal protective equipment (goggles/shield, gloves, etc).
(b)
Attach air hose to air fitting on fuel tank.
(c)
Adjust air regulator to provide between 4 to 5 psi.
(d)
Open air valve and pressurize tank between 4 to 5 psi (0.28 - 0.35 kg/cm2) for five minutes. Check for
signs of leakage or permanent deformation.
(e)
Close air valve and bleed off air pressure from fuel tank.
(f)
Disconnect air hose and remove plugs and air fitting from fuel tank.
(4)
Inspect tank straps for cracks, breaks, and torn or separated rubber.
(5)
Inspect condition of filler cap gasket and fording vent valve.
(6)
Inspect fuel indicator for broken or cracked face glass. Inspect glass frame screws for looseness.
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