Piper PA-32RT-300T User Manual

LANCE
II SERVICE
MANUAL
3.
The
thermoplastic
will
return
to
its original
shape
upon
cooling.
c.
Deep
Scratches,
Shallow
Nicks
and
Small
Holes:
(Less
than
1 inch
in
diameter.)
(Refer to
Figure 4-7.)
1. Solvent
cements
will
fit
virtually
any
of
these
applications.
If the
area
to
be
repaired
is very
small,
it may
be
quicker
to
make
a satisfactory
cement
by dissolving
thermoplastic
material
of
the
same type
being
repaired
in solvent
until
the
desired
paste-like
consistency
is achieved.
2.
This
mixture
is then
applied
to the
damaged
area.
Upon
solvent
evaporation,
the
hard
durable
solids
remaining
can
easily
be
shaped
to the
desired
contour
by filing
or
sanding.
3.
Solvent
adhesives
are not
recommended
for highly
stressed
areas, on
thin
walled
parts or
for patching
holes
greater
than 1/4
inch in
diameter.
4. For
larger
damages
an
epoxy
patching
compound
is recommended.
This
type
material
is
a two part,
fast
curing,
easy
sanding
commercially
available
compound.
5.
Adhesion
can
be increased
by
roughing
the
bonding
surface
with
sandpaper
and
by utilizing
as much
surface
area for
the
bond
as possible.
6. The
patching
compound
is mixed
in
equal portions
on a hard
flat
surface
using
a
figure
eight
motion.
The
damaged
area
is cleaned
with
perchlorethylene
or VM&P
Naphtha
prior
to applying
the
compound.
(Refer
to
Figure
4-8.)
7.
A mechanical
sander
can be
used
after
the
compound
is cured,
providing
the
sander
is kept
in
constant
motion
to
prevent
heat
buildup.
8. For
repairs
in areas
involving
little
or no
shear stress,
the
hot
melt adhesives,
polyamids
which
are supplied
in stick
form
may
be
used.
This type
of
repair
has
a low
cohesive
strength
factor.
9.
For repairs
in areas
involving
small
holes,
indentations
or
cracks
in the
material
where
high
stress
is apparent
or
thin
walled
sections
are
used,
the
welding
method
is
suggested.
10. This
welding
method
requires
a hot
air gun
and ABS
rods.
to
weld,
the gun
should
be
held to
direct
the flow
of
hot air
into the
fusion
(repair)
zone,
heating
the
damaged
area
and rod
simultaneously.
The
gun should
be
moved
continuously
in
a fanning
motion
to prevent
discoloration
of
the material.
Pressure
must
be
maintained
on
the rod
to
insure
good
adhesion.
(Refer
to Figure
4-9.)
11.
After
the repair
is completed,
sanding
is
allowed
to obtain
a surface
finish
of
acceptable
appearance.
d. Cracks:
(Refer
to
Figure
4-10.)
1. Before
repairing
a crack
in the
thermoplastic
part,
first
determine
what
caused
the
crack and
alleviate
that
condition
to
prevent
it recurring
after the
repair
is made.
2.
Drill
small
stop
holes
at
each
end
of
the
crack.
3. If
possible,
a double
plate
should
be
bonded
to the
reverse
side
of the
crack
to
provide
extra
strength
to
the part.
4. The
crack
should
be "V"
grooved
and
filled
with repair
material,
such as
solvent
cement,
hot
melt
adhesive,
epoxy
patching
compound
or
hot air
welded,
whichever
is
preferred.
5.
After the
repair
has
cured,
it may
be sanded
to
match
the surrounding
surface
finish.
Issued:
1/3/78
9
STRUCTURE
1E19

Piper PA-32RT-300T Specifications

General

Brand	Piper
Model	PA-32RT-300T
Category	Aircrafts
Language	English