TM 55-1520-240-23-4
5-68
REPAIR BLADE FAIRING — SINGLE SKIN FULL DEPTH
(Continued)
5-68
d.
Rest edge of router base (6) on router guide
line (5). Keep bit (7) above blade skin (9).
e.
Slowly lower bit (7) onto blade skin (9). Keep
edge of router base (6) on guide line (5).
Move router (8) counterclockwise.
f.
Complete cut and move router (8) to center of
damage area (1). Turn router off and remove
it.
7.
If hole saw is used to remove damaged skin,
proceed as follows:
a.
Use hole saw with center drill that does not
extend more than 1/4 inch beyond saw.
Position hole saw on guide line (4). Cut only
deep enough to go through skin (9). Hold
saw lightly against skin and turn slowly. Use
wrench.
8.
If knife is used to remove damaged skin, make
a series of punctures along guide line until
damaged skin is separated.
9.
Peel off cut-out section of skin (9). Use pliers
and chisel. Peel from center outward. Do not pry
against undamaged skin.
Do not cut or score opposite skin
when removing damaged core. If
opposite skin is damaged, a double
skin repair must be done (Task 5-70).
10.
Cut through core (10) to opposite skin (9). Use
pen knife with blunt point. Cut only deep enough
to separate damaged core. If opposite skin is
damaged, make a double skin repair (Task 5-70).
11.
Remove damaged core (10). Use pliers and
chisel. Avoid damage to skin.
12.
Sand bottom skin (9) where core (10) was
removed. Use abrasive paper (E7).
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