Technical data

the next step. If other areas are to be worked, repeat
Paragraph 2.7 step g through step n on the next area.
Application of chemical remover on a new area may
begin as soon as the flushing operation is completed and
while the residual finish system removal operation is in
progress on an area being worked as long as enough
personnel are on hand to work both areas effectively.
p. Immediately after finishing the chemical removal opera-
tion on the last area from which the finish system is
being removed, thoroughly wash all areas of the aircraft,
equipment or component from which the finish system
has been removed and those adjacent areas which may
have been exposed to or contaminated with chemical
remover in accordance with TO 1-1-691, the aircraft -23
technical order, and/or the equipment system specific
technical order. Inspect all areas where chemical re-
mover may have become entrapped, and clean these
areas as required. The aircraft, equipment or component
shall not be removed from the coating removal facility
until this washing operation is completed.
2.8 CHEMICAL REMOVAL PROCEDURES FOR
CONFINED LOCATIONS.
When use of the chemical removers, listed in Paragraph 2.6.2
through Paragraph 2.6.4, of this manual is impractical be-
cause of assembly complexities and/or rinsing difficulties,
remove the finish system from metal surfaces using specifi-
cation MIL-T-81722, Type I or II thinner, or specification
TT-E-751 ethyl acetate in accordance with the following
procedures:
• Specifications MIL-T-81772, Type I or II thin-
ner, and TT-E-751 ethyl acetate are flam-
mable. Avoid all sources of ignition.
• Chemical removers are toxic to skin, eyes, and
respiratory tract. Skin and eye protection re-
quired. Contact Bioenvironmental Engineer-
ing for determination of need for respiratory
protection and selection of proper type when
required.
• Use extreme caution when using specifications
MIL-T-81772, Type I or II thinner, or TT-E-
751 ethyl acetate in areas where liquid oxygen
storage and transfer equipment are located.
Never use these materials on valves, flanges or
other components where they may come in
direct contact with liquid oxygen or pure
oxygen vapor.
Do not allow these materials to spread to adjacent
areas not being worked or to splash, overspray, or
spill onto adjacent rubber, synthetic rubber, plas-
tic, or composite materials, or components as
damage to the finish system on adjacent areas and
these materials and components will result.
a. Apply a solvent selected from the list above to the area
from which the finish system is to be removed with a
small non-metallic bristle brush or a clean cotton rag.
b. Allow the solvent to dwell on the surface until all the
finish system to be removed has softened and/or lifted
from the surface. It may be necessary to keep a rag
saturated with solvent on the surface in order to keep the
surface wet for the time required to lift the finish system.
c. Agitate the surface at frequent intervals using the same
abrasive materials and scrapers listed for agitation and
residual finish system removal in Paragraph 2.7 step k
and Paragraph 2.7 step n. Wipe loosened finish system
residue from the surface with clean cotton rags wetted
with the same solvent being used for removal.
d. Repeat Paragraph 2.8 step a through Paragraph 2.8 step
c as necessary until all finish system and residue have
been removed from the metal surface, including re-
cesses around rivets, bolts, etc.
e. Wipe the area clean with a clean cotton rag wetted with
fresh tap water, and then wipe the area dry with a clean
cotton rag.
NOTE
If this chemical method does not remove the
finish system, proceed to one of the mechanical
methods in this technical order.
TO 1-1-8
Change 1 2-11