TM 55-1520-240-23-4
5-66
REPLACE NICKEL EROSION CAP (AVIM)
(Continued)
5-66
13.
Inspect for loose fibers, delaminations,
and depressions. Repair loose fibers and
delaminations (Task 5-67).
14.
Repair depressions as follows:
a.
Prepare the low area(s) by lightly sanding
with abrasive paper (E9). Using a clean
cloth wet with acetone, wipe the area clean
of sanding particles and residue. Allow to
air dry.
NOTE
Adhesive (E41) is preferred. Use
(E43) only if (E41) is not available.
b.
Mix adhesive (E41). Follow instructions
below.
Weigh and mix adhesive and resin
accurately to produce acceptable
bond.
c.
If adhesive (E41) is used, weigh 100 parts
of resin, and 23 parts of hardener. Mix in
polyethylene cup (E157) until color is uniform.
Use wood spatula (E424). Wear gloves
(E184.1).
d.
If adhesive (E43) is used, weigh 7 parts of
gray hardener and 5 parts of white base.
Mix in polyethylene cup (E157) until color is
uniform. Use wood spatula (E424). Wear
gloves (E184.1).
e.
Fill low area(s) with the adhesive. Blend into
adjacent areas.
Blade temperature must not exceed
160ºF (71ºC). Damage to the
fiberglass can occur.
NOTE
If heat is not available, a serviceable
cure will be achieved at 70ºF (21ºC)
in 36 hours.
f.
Cure the mixture at 110º - 130ºF (43º - 54ºC)
for 16 hours. Monitor with temperature
indicating strips (E413).
g.
After cure is complete, lightly sand the repair
to match the adjacent areas.
5-297
