TM 55-1520-240-23-4
5-67.3
REPAIR BLADE FAIRING SKIN DELAMINATION
(Continued)
5-67.3
19.
Start vacuum pump. Check for leaks. Reposition
polyvinyl sheet (E284) (11) or add tape (E396)
(7) as needed.
20.
Maintain 20 inches Hg vacuum through adhesive
cure.
Do not exceed 160ºF (71ºC) at blade
surface. Damage to fiberglass can
occur.
21.
Cure adhesive at 150º - 160ºF (66º - 71ºC) for
2 hours. Use heat lamp. Monitor temperature.
Use temperature indicating strips (E413).
NOTE
Serviceable cure can be achieved
without heat at 70º - 80ºF (21º -
27ºC) in 24 hours. Vacuum may be
removed after 12 hours.
22.
Turn off vacuum pump.
23.
Remove peel ply (3), fabric (4), rubber (5),
fiberglass (6), tape (7), tube (8), and sheet (11).
Harmful particles can be inhaled if
respirator is not worn while sanding.
24.
Sand adhesive squeeze out from cut (2) to blend
with surrounding area. Use abrasive paper (E9).
Wear a respirator.
INSPECT
FOLLOW-ON MAINTENANCE:
Refinish repaired area (Task 5-82).
END OF TASK
5-355
