REPAIR COMPOSITE WEATHER-PROTECTIVE COVER (AVIM)
BOND VOID (TO 2 SQUARE-INCHES)
Determine extent of void (8) by tapping area with
coin. Outline area of void with circle or oblong.
Use pencil compass and straightedge. If a void
is suspected, refer to TM 1-1520-253-23.
If area of void is greater than 2
square-inches, go to step 40.
Cut a piece of fiberglass laminate (E168.1) (9)
large enough to overlap outline of void (8) by 1.0
inch in all directions.
Do not sand into glass fibers.
Complete removal of primer is not
Remove finish down to primer from an area 1.5
inches larger in all directions than outline of void
(8). Use abrasive paper (E8). Use cloths (E120)
damp with acetone (E20) as needed to soften
finish. Wear gloves (E186).
Drill several small holes (10) through void (8)
near edge. Use a number 30 or 40 drill.
Clean area with a clean cloth (E120) damp with
acetone (E20). Wipe area dry with clean dry
Prepare mixture of adhesive. (Refer to steps 106
thru 109.) Inject adhesive into void (8) through
holes (10) until void is full. Use hypodermic
Cover holes (10) with tape (E390.1). Turn cover
(1) over to prevent adhesive from running into
Press down firmly on void (8). Let excess
adhesive squeeze out through holes (10).
Remove protective film from both sides of
laminate piece (9). Carefully pull at right angle to
direction of fibers.
Apply coat of adhesive to underside of laminate
piece (9). Center piece over void (8) and press
Bond and cure repair. (Refer to steps 110 thru