REPAIR AFT TRANSMISSION OIL COOLER OUTSIDE SURFACE
Wear gloves (E184.1) during the
remainder of this task; otherwise,
personal injury could result.
Acid etch the reworked area as follows:
Prepare a solution of 3 parts acetic acid
(E21) in 7 parts water. Wear gloves (E184.1)
Swab the area with solution for 2 minutes.
Use gauze sponges (E184).
Rinse the area with cold water.
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
Clean the reworked area with naphtha (E245)
and clean cloths (E120). Let the area air dry.
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.
Apply epoxy primer (E292 or E293) to the
reworked area. Let air dry for 2 hours.
Apply epoxy topcoat (E166) .
END OF TASK