Deicer Boot Repairs; Deicer Boot Removal And Installation - Beechcraft TRAVEL AIR 95 Shop Manual

b.
If
the
surfacing
has developed
cracks.
NOTE
c.
If
the
conductivity is low.
A locally manufactured buffing
shield will
assure a neater
job.
The shield
can be fab-
The following
procedures should be followed when
ricated
from
any
thin
sheet
material
such as
resurfacing
deicer
boots:
acetate,
steel, etc., and can be long strips
taped
to
the
boot
around
the
perimeter of
a.
Clean
the
deicer
boot thoroughly with
toluol
the
damaged area.
Remove
the
buffing
or uncontaminated unleaded aviation gasoline.
shield after
the
area
has been buffed.
b.
Roughen
the
entire surface of
the
boot with
d. Wipe
the
buffed area
with
a clean lint-free
cloth
fine sandpaper.
moistened
with
toluol
or uncontaminated
unleaded
aviation gasoline
to
remove
all loose particles.
c. Clean
the
surface again with a clean
lint-free
cloth moistened with
toluol
or uncontaminated
un-
e. Brush
one even coat of No. 4 cement (supplied
leaded aviation gasoline.
in
the
repair kit on
the boot corresponding
to the
patch. Remove
the
backing
from
the
patch and apply
d. Apply masking
tape
beyond
the
upper and lower
one coat of cement
to that surface
of
the patch.
trailing edges,
leaving
a 1 4-inch
gap of bare
metal.
f
.
Allow the cement
to
set
until
tacky.
e. Brush
one coat
of
Goodrich
A-56-B
cement on
the
boot and allow it
to
dry at least
one hour,
Then
g.
Position
the
patch over
the
boot and
make
apply a second coat and allow it
to
dry
at
least
four
contact with one edge or
the
center of
the
patch.
hours
before
operating
the
deicers. The airplane
Work down
the
remainder of
the
patch
carefully
to
may be flown as soon as
the
cement is dry, avoid
trapping
air pockets. Roll
the
patch
thoroughly,
starting
from
the
center and working
to
the
edges.
NOTE
h. Allow
the
patch
to
set for 10
to
15 minutes,
then
wipe
the
patch and surrounding area with a clean
If A-56-B
cement
has
aged
three
months or
lint-free
cloth moistened with
toluol
or uncontamin-
more,
it may be necessary
to
dilute it with
ated
unleaded
aviation gasoline.
toluol to
obtain
the
proper brushing
consis-
tency.
Mix
thoroughly,
approximately five
i
.
Satisfactory
adhesion of
the
patch
will be reached
parts cement
to
one part
toluol.
in about
four
hours; however,
the
boot may be inflated
to
check
the
repair after
a minimum of 25 minutes,
The deicer boots are installed
as a permanent
instal-
lation
and should not be removed except
when vul-
j
.
Apply one light coat of A-56-B
cement
to the
canized repair at
the
factory
is required•
patched area,
extending beyond
the
buffed area,
to
restore
the
conductive
surface.
Allow
the
cement
to
dry
thoroughly
(at least one
hour)
and apply a
DEICER BOOT
REPAIRS
second light coat. The airplane
may be flown
as
soon
as
the
cement is dry; however,
do not operate
Minor scuffed
areas
on
the
boots
normally
require the
deicers until
the
cement has dried
for at least
only restoration of
the
conductive surface in
the
four hours.
immediate area. However, if
the
entire
surface ply
has been removed, exposing
the
brown natural
rubber underneath, or if
the
boot is cut,
torn
or
DEICER BOOT REMOVAL
AND INSTALLATION
ruptured, it is necessary
to
patch
the
damage.
B.F.
Goodrich Repair
Kit No. 74-451-C
contains
cold
Removal
patches suitable for repairing damaged areas. A
cold patch on a deicer boot,
however,
is
a
temporary
To loosen or remove an installed deicer
boot,
use
or emergency
method of repair; at
the first oppor-
toluol
to
soften
the
"adhesion"
line where
the
boot is
tunity,
the
boot should be removed
and
returned
to
joined
to the
metal surface.
The
solvent
should be
the
factory for
a
vulcanized repair.
Cold patch applied sparingly with a brush or
triggertype
oil can
repairs can be made by
the
following method: with a spout. Slowly peel
the
boot back, allowing
the
solvent
time to
undercut
the
boot.
Exercise care not
a. Clean
around
the
damage
with a clean
lint-free
to
injure
the
boot during
removal.
cloth moistened with
toluol
or uncontaminated
un-
leaded aviation gasoline. Preparation of Metal Surfaces
b. Select
a patch which will extend
at
least
1/2-
Solvent Cleaning: The metal
surface should be
com-
inch beyond
the
damaged area in all directions.
pletely clean
to
prevent adhesion failure. Using a
grease-free
cloth dampened
in Methyl-Ethyl-Ketone,
c. Buff
the
area around
the
damage with steel wool go over
the
area
to
be covered by
the
boot. Change
or
fine
sandpaper
to
remove
the
conductive coating
the
cloths frequently,
to
avoid contaminating
a
pre-
and
thoroughly
roughen
the
exposed
surface.
viously
cleaned
area.
Do not contaminate the
clean
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