TM 55-1520-240-23-4
5-71
REPAIR TRAILING EDGE — MINOR DAMAGE
(Continued)
5-71
REPAIR DELAMINATIONS
4.
Position blade with trailing edge (2) lower than
leading edge (3).
Acetone (E20) is extremely flammable.
It can be toxic. Avoid inhaling. Use
only with adequate ventilation. Avoid
contact with skin, eyes, or clothing.
Keep away from heat, sparks, or open
flame. In case of contact, immediately
flush skin or eyes with water for
at least 15 minutes. Get medical
attention for eyes.
5.
Fill plastic squeeze bottle (E366) with acetone
(E20).
6.
Flush delaminated area (4) to wash out dirt. Use
acetone (E20). Flush until acetone is free of
contamination. Check that area is clean.
Adhesive (E47.1 or E43) is toxic. It
can irritate skin and cause burns.
Avoid inhaling. Use only with
adequate ventilation. Avoid contact
with skin, eyes, or clothing. In case
of contact, immediately flush skin
or eyes with water for at least 15
minutes. Get medical attention for
eyes.
7.
Prepare small quantity of adhesive (E47.1 or
E43) as follows:
a.
For adhesive (E47.1), weigh equal parts of
adhesive (E47.1) and curing agent (E158.1).
Use trip balance.
b.
For adhesive (E43), weigh 7 parts of gray
hardener and 5 parts of white base. Use trip
balance.
c.
Mix in polyethylene cup (E157). Use wood
spatula (E424).
NOTE
Working life of adhesive (E47.1 or
E43) is about 30 minutes.
8.
Work adhesive mix into delaminated area (4).
Use 0.005 inch shim stock.
9.
Bond repair area as follows:
a.
Cover repair area. Use layer of peel
ply (E270) (5) followed by layer of
Teflon-impregnated fabric (E170) (6). Cut
both large enough to wrap around trailing
edge and overlap repair 1 inch.
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