TM 55-1520-240-23-4
5-16
REPAIR HUB OIL TANK (AVIM)
(Continued)
5-16
6.
Finish reworked areas of magnesium hub oil tank
(4 or 6) as follows:
Chromic acid (E114) is extremely
toxic. It can irritate skin and cause
burns. Avoid inhaling. Use only with
adequate ventilation. Avoid contact
with skin, eyes, or clothing. In case
of contact, immediately flush skin
or eyes with water for at least 15
minutes. Get medical attention for
eyes.
NOTE
Do not wash surface with hot water.
a.
Prepare a type VI solution of chromic acid
(E114).
b.
Brush solution on blended areas of hub oil
tanks (4 or 6). Wear gloves (E184.1).
c.
Keep surface wet for 1 to 3 minutes, then
wash surface with cold water and dry with
hot air.
7.
Finish reworked areas of aluminum hub oil tank
(4 or 6) as follows:
Alodine powder (E65) is an oxidizer.
Discard cloths which contain this
material in a separate container. If
discarded with cloths contaminated
with acetone, MEK or other organic
solvents, combustion can result. In
case of contact, immediately flush
skin or eyes with water for at least
15 minutes. Get medical attention
for eyes.
a.
Mix three ounces of alodine powder (E65)
with one-half ounce of concentrated nitric
acid (E22). Add mixture to one gallon of
water.
b.
Swab alodine solution on area for 2 to 5
minutes. Wear gloves (E184.1). Use gauze
sponges (E184).
c.
Rinse surface with cold water and let air dry.
8.
Apply one coat of epoxy primer (E292.1). Wear
gloves (E184.1). Let air dry for 1 hour.
9.
Cover packing grooves (6.1) in refinish area. Use
tape (E388). Apply two more coats of epoxy
primer (E292.1). Wear gloves (E184.1). Allow
1 hour between coats.
Polyurethane paint (E285.1) is
flammable and toxic. It can irritate skin
and cause burns. Avoid inhaling. Use
only with adequate ventilation. Avoid
contact with skin, eyes, or clothing.
Keep away from heat, sparks, or open
flame. In case of contact, immediately
flush skin or eyes with water for
at least 15 minutes. Get medical
attention for eyes.
10.
Apply two coats of black polyurethane paint
(E285.1) per Task 2-350.1. Wear gloves
(E184.1). Allow one hour between coats.
11.
Remove cap/plugs from hub oil tank (4 or 6).
Remove covering from packing groove (6.1).
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
5-92
