TM 10-5411-201-14
T.O. 35E4-178-1
4-37.
REPAIR OF PUNCTURE WITH CORE FRACTURE.
NOTE
The following procedure covers repair of any
shelter panel punctured skin with core fracture,
(damaged area not exceeding 25 square in.
(161 sq cm)).
Use hand router to cut patches
and openings.
WARNING
Wear safety goggles for eye protection from flying
metal chips.
a.
Dry panel per paragraph 4-32, if required.
b.
Cut an opening through panel skin with a portable electric router,
Appendix B, Item 15, that is one inch greater than damaged area.
Avoid sharp
corners in opening.
c.
Peel damaged portion of skin
from core by lifting and rolling skin.
d.
Remove all loose core from
exposed core area with compressed air.
e.
Cut aluminum patch (Item 4,
Appendix E) one inch larger all around
than cutout opening.
f.
Layout and drill holes as show.
g.
Mix sufficient amount of
adhesive (Item 1, Appendix E) in
accordance with manufacturer’s instructions.
h.
Pack adhesive in core cells
to fill exposed area above surface of
panel skin.
i.
Apply heat using tripod base
heat lamp, Appendix B, Item 16, at 200°F
(93.3°C) for 40 to 60 minutes to fully
cure adhesive.
Alternate cures:
150° F
for 4 hours or 75° F for 72 hours.
j.
Sand cured adhesive with sand-
paper (Item 17, Appendix E) to obtain a
smooth contour with surface of panel skin.
4-168
