4-21. FIBERGLASS
TOUCH-UP AND
SURFACE REPAIRS.
a.
Remove wax, oil and dirt from around
the damaged area with acetone,
Methyl-
ethylketone
or equivalent
and remove
paint
to gel coat.
b. The damaged area may be scaped
with a fine blade knife or a power
drill with a burr
attachment to roughen
the bottom and sides of the
damaged area. Feather the edge
surrounding the scratch
or cavity. Do not undercut the edge.
(If the scratch or cavity is shallow
and
penetrates only the surface
coat, continue to Step
h.)
c. Pour a small amount of
resin into ajar lid or on a piece ofcardboard,just
enough to fill
the area being
worked on. Mix an
equal amount of
milled fiberglass with
the resin, using
a
putty
knife or stick. Add
catalyst, according
to kit instruction,
to the resin
and mix
thoroughly. A hypodermic
needle may
be used to inject
gel into small cavities
not requiring
fiberglass
millings mixed
with the gel.
829
PROFILE
VIEW
INDICATING
Figure
4-10. Repair of
Impacted Damage
PIPER CHEROKEE SIX SERVICE MANUAL
4-20. FIBERGLASS
REPAIRS. The repair procedure
in this manual will describe
the
methods
for the repair of
fiberglass reinforced
structures. Paragraph
4-21 describes Touch-up
and
Surface Repairs
such as
blisters, open
seams, delaminations,
cavities,
small
holes and
minor damages that
have not harmed
the fiberglass cloth
material. Paragraph
4-22 describes
Fracture and
Patch Repairs such
as puncture, breaks,
and holes that
have penetrated through
the
structure and
damaged
the fiberglass
cloth. A repair
kit, part
number 756
729, that will
furnish the necessary
material for
such repairs is available
through Piper
Aircraft Distributors.
NOTE
Very carefully
follow resin and
catalyst mixing instructions
furnished
with
repair kit.
Added: 12/4/79
STRUCTURE
1F15
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