TM 55-1520-240-23-4
5-137
REPAIR WEATHER-PROTECTIVE COVER (AVIM)
(Continued)
5-137
REPLACE STIFFENER
42.
Replace cracked stiffener (16).
43.
Remove two rivets (17) and two rivets (18).
44.
Remove paint at edge of stiffener (16). Use
acetone (E20). Wear gloves (E186).
45.
Slowly drive 0.040 inch wedge (19) under edge
of stiffener. Keep wedge close to stiffeners to
prevent damage to skin. Open joint slightly.
46.
Apply warm water at 130ºF (55ºC) into gap under
stiffener (18). Use squeeze bottle (E366).
Do not force wedges. Skin can
become delaminated.
47.
Position 0.125 inch wedges in gap. Apply warm
water in gap. Slowly insert wedges into gap. Do
not force separation.
5-751