TM 1-1520-238-23
Change 9
1-158.11
1.49.
CORROSION CONTROL/INSPECTION – continued
b. Steel (Ferrous Alloys)
(1) Remove loose surface corrosion using a stainless steel brush and dry cleaning solvent (item 74, App F).
(2) Abrade corroded surface using abrasive paper (item 133, App F).
(3) Apply corrosion removing compound (item 64B, App F). to corroded area using a swab or a brush
(item 34, App F).
(4) Allow area to soak for 5 to 10 minutes until a bright, clean surface is produced.
(5) Rinse thoroughly using clean, potable water, and allow to dry at ambient temperature. Go to paragraph
1.49.16.
c. Magnesium
NOTE
TM 55-1500-345-23 should be referenced for proper identification of corrosion on magnesium parts.
TM 55-1500-344-23 also gives a chemical procedure that will identify the metal.
(1) Remove surface corrosion using a nonmetallic, stiff, bristle brush and dry cleaning solvent (item 74,
App F).
(2) Abrade corroded surface using aluminum oxide cloth (item 47, App F) to smooth and blend rough areas.
(3) Remove any remaining surface corrosion using a nonmetallic, stiff, bristle brush and dry cleaning solvent
(item 74, App F).
(4) Mix chemical conversion coating (Dow 19) using chromium trioxide (item 41A, App F) and calcium sulfite
(item 39A, App F) prior to application. Apply chemical conversion coating (Dow 19) to repaired surface as
soon as cleaning solvent has evaporated.
GO TO NEXT PAGE
