TM 55-1520-240-23-4
5-67.2
REPAIR BLADE FAIRING SKIN DAMAGE
(Continued)
5-67.2
d.
Check that patch (4) is 1 inch larger than
damaged area outline (2) on all sides. Check
that blade surface finish is removed 1/2 inch
around patch.
e.
Trace patch outline (5) onto blade skin (6).
f.
Sand both sides of patch (4) to remove
surface glaze. Remove peel ply if necessary.
Use abrasive paper (E9).
NOTE
Patch will not adhere if surface glaze
is not removed.
6.
Wear gloves (E186). Clean skin (6) where finish
was removed. Use cloth (E120) damp with
acetone (E20). Wipe dry immediately. Use dry
cloth (E120). Do not remove gloves.
INSPECT
APPLY ADHESIVE
NOTE
Prepackaged adhesive (E40) is
preferred. Use adhesive (E41) only if
prepackaged kit is not available.
7.
Mix tube of adhesive (E40). Follow instructions
on kit.
8.
If adhesive (E40) is not available, prepare
adhesive (E41) as follows:
a.
Weigh 100 parts of resin and 23 parts of
hardener. Use trip balance.
b.
Mix parts in polyethylene cup (E157) until
color is uniform. Use tongue depressor
(E424).
NOTE
Working life of adhesive is 30
minutes.
5-345
