Technical data

13773-001
20-30
Page 330 Nov 2000
(3) Final Cleaning
Note: Final cleaning must be accomplished prior to applying any adhesive, or sealant.
All surfaces shall be thoroughly cleaned and dried before application of any adhe-
sive or sealant. When handling cleaned surfaces, wear clean white cotton gloves
to prevent surface contamination. Surfaces shall be recleaned in the event of con-
tamination.
(a) Fold clean lint-free cloths in such a manner as to eliminate raw edges to reduce the possi-
bility of lint contaminating the surface to be cleaned.
WARNING:
Cleaning solvents are toxic and flammable. Skin protection and eye
protection are required. Additionally, adequate ventilation and/or fresh
air masks shall be used in all closed areas.
(b) Dampen one cloth with cleaning solvent from polyethylene squirt bottle. The cloth should
not be saturated to a point where solvent drips.
Note: Never pour or spray cleaning solvent on aircraft structure because it will run
back between structural layers, then run back out again after the cleaning
operations are completed, bringing contamination to surfaces previously
cleaned.
CAUTION: Extreme care is needed to clean hard to reach areas, corners, gaps, etc. A
small paint brush, pipe cleaners, or cloth wrapped around wooden or phe-
nolic tools may be used for slots, recesses, and other hard to reach areas.
Do not allow cleaning solvent to air dry as a residue will remain on the sur-
face, contaminating a following process.
(c) Thoroughly clean small areas at a time and immediately wipe area dry with a clean, dry,
lint-free cloth.
Note: If adhesive or sealant is to be applied, always clean an area wider than the
width of final product being applied.
(d) Continue cleaning process until no discoloration is noted on the drying cloth.
Note: If primer is removed during cleaning and if the exposed metal surface will
be completely covered by the sealing process, the exposed metal surface
need not be further treated.
Final cleaning must be done prior to applying adhesive or sealant. All sur-
faces shall be thoroughly cleaned and dried before application of any adhe-
sive or sealant. When handling cleaned surfaces, wear clean white cotton
gloves to prevent surface contamination. Surfaces shall be recleaned in the
event of contamination.