TM 1-1520-238-23
2-94.2
Change 4
2.34.
ELECTROMAGNETIC CONDUCTIVE COATING APPLICATION – continued
2.34.5. Touch-up
a. Touch up aluminum parts.
NOTE
Do not touch up surfaces longer than 6.00 INCHES. If longer, reapply conductive coating to entire
surface.
(1) Aluminum surfaces that are scratched and/or have corrosion protective coating damage, shall have
chemical conversion coating applied (TM 55-1500-344-23). Use corrosion resistant coating (item 66,
App F).
(2) Mask off conductive coated material 0.25 INCH beyond damaged area. Use tape (item 205, App F).
CAUTION
Ensure not to soften or damage existing coating during cleaning.
(3) Clean area to which conductive coating will be applied. Use isopropyl alcohol (item 106, App F) and cloth
(item 52, App F).
(4) Apply a coat of chemical conversion coating. Use brush (item 36, App F) and corrosion resistant coating
(item 66, App F).
(5) Remove tape and lightly sand surface next to chemical coated area. Use cloth (item 48, App F).
(6) Clean sanded area. Use isopropyl alcohol (item 106, App F) and cloth (item 52, App F). Ensure all tape
adhesive has been removed.
(7) Brush the surface with conductive coating material. Overlap edge of damaged area a minimum of 0.75
INCH where possible. Use brush (item 36, App F) and corrosion resistant coating (item 65, App F).
(8) Cure conductive coating 1 HOUR.
(9) Apply a second coat of conductive coating.
(10) Apply curing criteria in paragraph 2.34.4.e.
b. Inspect (QA).
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