TM 55-1520-240-23-4
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REPAIR BLADE FAIRING — SINGLE SKIN FULL DEPTH
(Continued)
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3.
Remove finish around damage area for a
distance of at least 1-1/2 inches. Use sanding
block and abrasive paper (E6). Use acetone
(E20), if needed to soften finish. Complete finish
removal with abrasive paper (E7). Do not sand
through wire mesh (3).
4.
If wire mesh diverter (3) must be replaced,
expose wire mesh 1-1/2 inches outside of
damage area.
5.
Draw outline (4) around area to be removed. Use
pencil compass and straightedge. If damage
area (1) will not support compass point, cover
area. Use template paper (E263) and masking
tape (E388).
6.
If router is used to remove damaged skin,
proceed as follows:
NOTE
If router is not available, go to step 7
or 8 or alternate methods.
a.
Draw line (5) around outline (4). Space the
outer line so router base (6) will follow it
while router bit (7) follows outline (4). Use
pencil compass and straightedge. If damage
area (1) will not support compass point,
cover area. Use template paper (E263) and
masking tape (E388). Remove paper and
tape.
NOTE
If router base diameter is 6 inches,
outer line (5) should be 2-3/4 inches
outside outline (4) when 1/2 inch
router bit is used.
b.
Install router bit (7). Set depth to about 0.020
inch.
Wear goggles, respirator, and
protective clothing when using router.
Fiberglass particles will irritate eyes,
lungs, and skin.
c.
Start router (8). Keep router under control.
Use both hands.
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