TM 55-1520-240-23-5
6-145.1
REPAIR AFT TRANSMISSION OIL COOLER OUTSIDE SURFACE
(Continued)
6-145.1
Wear gloves (E184.1) during the
remainder of this task; otherwise,
personal injury could result.
6.
Acid etch the reworked area as follows:
a.
Prepare a solution of 3 parts acetic acid
(E21) in 7 parts water. Wear gloves (E184.1)
and goggles.
b.
Swab the area with solution for 2 minutes.
Use gauze sponges (E184).
c.
Rinse the area with cold water.
7.
Fluorescent inspect reworked area to check for
cracks (TM 1-1500-335-23). There shall be no
cracks. Alternate inspection method is the eddy
current inspection method. If crack is suspected
in aft transmission oil cooler outside, refer to TM
1-1520-253-23.
8.
Clean the reworked area with naphtha (E245)
and clean cloths (E120). Let the area air dry.
9.
Swab on solution of alodine powder (E65) and
water. Use gauze sponges (E184). Swab for 2
to 5 minutes. Rinse the area with cold water
and let air dry.
10.
Apply epoxy primer (E292 or E293) to the
reworked area. Let air dry for 2 hours.
11.
Apply epoxy topcoat (E166) .
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
6-519
