TM 55-1520-240-23-4
5-72.1
REPLACE BLADE FAIRING TIP SECTION
(Continued)
5-72.1
f.
Press open end of bag (12) closed over tube
(14). Use extra tape (E396) as needed to
obtain an airtight seal.
NOTE
Distortion of wire mesh (5) by force of
vacuum is acceptable.
g.
Start vacuum pump. Check for leaks.
Reposition bag (12) or add tape (E396) as
needed.
h.
Maintain 20 inches Hg vacuum through
adhesive cure.
Do not exceed 160ºF (71ºC) at blade
surface. Damage to fiberglass blade
can occur.
i.
Cure adhesive at 50º - 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.
j.
Turn off vacuum pump.
k.
Remove bag (12) and hose (14). Remove
fiberglass cloth (11) and peel ply (10).
INSPECT
5-415