TM 55-1520-240-23-5
6-102.1
REPAIR ENGINE TRANSMISSION OUTSIDE SURFACE
(Continued)
6-102.1
6.
Smooth blended area with crocus cloth (E122).
Do not leave any sharp edges.
7.
Acid etch reworked area as follows:
a.
Prepare a solution of 3 parts acetic acid
(E21) in 7 parts water. Wear gloves (E186)
and goggles.
b.
Swab area with solution for 2 minutes. Use
gauze sponges (E184).
c.
Rinse area with cold water.
8.
Fluorescent inspect reworked area to check for
cracks (TM 1-1500-335-23). There shall be no
cracks.
9.
Apply surface treatment to reworked area as
follows:
a.
Clean area with naphtha (E245) and clean
cloths. Wear gloves (E186). Let area air dry.
b.
Swab on solution of chromic acid (E114) and
calcium sulphate (E91). Swab until metal
becomes dull gold to brown. Use gauze
sponges (E184). Rinse area with cold water
and let air dry.
10.
Apply epoxy primer (E293) to reworked area. Let
air dry for 2 hours.
11.
Apply epoxy topcoat (E166).
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
6-410
