TM 1-1520-238-23
Change 5
1-151
1.47.
CLEANING - GENERAL – continued
b. To remove stubborn dirt, grime, dried adhesive, or sealant, dip acid swabbing brush lightly in MEK, and
use brush to dislodge dirt. If removal is difficult, scrub strongly with increased amount of MEK. When clean,
immediately dry part with clean lint-free cloth. Use methyl ethyl ketone (item 124, App F) and brush (item 34,
App F). Discard brush in suitable container.
CAUTION
When cleaning parts that will require bonding, sealing, or painting in immediate subsequent repair
operations, methyl ethyl ketone (item 124, App F) shall be used. Use of other cleaners could adversely
affect bonding.
c. A group of small parts can be dipped in pail partly filled with solvent or MEK, then cleaned and dried.
If this method is used, fill pail with only amount of solvent or MEK needed. Use dry cleaning solvent (item 74,
App F) or methyl ethyl ketone (item 124, App F).
d. Wipe with clean lint-free cloth. Use cloth (item 52, App F).
e. Remove covering or masking if used.
1.47.5. Surfaces and Areas
a. Use clean rag dampened in solvent to remove grease or oil from surface or area. Use dry cleaning
solvent (item 74, App F). Immediately after cleaning, dry area with clean dry rag.
b. To remove stubborn dirt, grime, dried adhesive, or sealant, dip acid swabbing brush lightly in MEK, and
use brush to dislodge dirt. Use methyl ethyl ketone (item 124, App F) and brush (item 34, App F). If removal
is difficult, scrub strongly with increased amount of MEK, but do not flood. Discard brush in suitable container.
c. Wipe with clean lint-free cloth. Use cloth (item 52, App F).
d. Remove covering or masking if used.
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