Raytheon Beech Baron E55 - Page 540

aeechcraft
BARON
55
AND
58
SHOP
MANUAL
gage
to
the
engine
in
such
a
manner
that
a
reading
of
PROPELLER
DEICER BOOT REMOVAL
I
the
slip
ring
runout
may
be obtained. To
avoid
error
in
(GOODRICH)
readings,
rotate
the
slip
rings
slowly
while
pushing
in
on
the
propeller
to
take the
play
out
of the thrust bear-
a´•
Remove
the
propeller spinner.
ings.
If
the
total
runout
over
360
degrees
of
rotation
b. Disconnect the
deicer
boot
leads from the
spinner
exceeds
0.005
inch,
the
slip
rings
should be
aligned
bulkhead.
as
follows:
c.
Remove
the
clip securing
the
lead
strap
to
the
a.
Approximately
a
0.012
inch
adjustment
may
be
spinner
bulkhead and
the
clamp securing
it
to
the
pro-
made
to
correct
the
slip ring
runout
by varying
the
tor-
peller
hub.
que
on
the
attachment bolts.
Using
the dial indicator
to
d~
Using methyl
ethyl
ketone
or
toluol
(19,
20
Con-
follow the
points
of
maximum
deviation,
adjust
the
slip
sumable Materials
Chart,
Section
2)
to
soften the
I
ring
assembly
to
the
prescribed
runout
limits
by
vary-
adhesion
line
between
the
boot and the
blade,
loosen
ing
the
torque
of
the
mounting
bolts
as
required,
within
one corner
of
the boot
sufficiently
to
grasp
it with vise
a
range
of
25
to
65
inch-pounds,
grip
pliers
or
a
similar
tool.
b.
If
more
than
0.012
inch
of
adjustment
is
required
for
alignment,
the
slip
ring assembly
may
be shimmed
to
within the
prescribed
limits for
true
running by
the
CAUTION
addition
of
AN960C416L
washers
on
the
mounting
bolts
between the
slip
ring assembly
and the
spinner
bulkhead.
If
necessary
fabricate thinner shims
to
the
Unless
the
boot
being
removed is to be
AN960
size.
scrapped,
cushion the
jaws
of
any
pull-
ing
tool
to
prevent
damaging
the boot
I
SLIP RING
MACHINING
(GOODRICH)
surface.
Slip rings
which have
roughened
or
damaged
sur-
faces,
but
are
structurally
sound,
can
be
machined
and
restored to
serviceability,
e.
Apply
a
slow,
steady pull
on
the
boot
to
pull
it
off
the
propeller
surface
while
continuing
to
use
the sol-
a.
Remove the
slip ring assembly
from
the
airplane
,,t t,
soften
the adhesive.
and
mount
it in
a
lathe. Position it
concentrically
in
the
lathe,
with
not
over
0.002
inch of
wobble
or
runout
f. Remove the
remaining
adhesive from the boot
and
over
360
degrees
of
rotation.
propeller
blade with
toluol
or
methyl ethyl
ketone.
b.
Take
light
cuts
for
a
smooth finish and
cut
no
deeper
than
required
to
remove
surface
damage.
The
contact
surfaces
of
the three
slip rings
must
be
paral-
PROPELLER
DEICER BOOT
I
lel
within
0.005
inch,
and flat
within
0.005
inch overall.
INSTALLATION
(GOODRICH)
Deviation
from flat is
not to
exceed
0.002
inch
over a
4-inch
are,
a.
Position the deicer
boot
on
the
propeller
blade
so
that
its
centerline
at
the inboard
end is
adjacent
to
the
c.
If
necessary,
undercut
the insulation between the
split
in
the
propeller
blade
clamp
and
1
inch
outboard
slip rings
to
a
depth
of
0.020
to
0.030
inch below the
of
the
clamp,
and
the centerline
at
the
outboard
end
contact
surface of the
slip rings.
In
this
operation,
the
falls
on
the blade
leading edge.
Be
sure
the
lead
strap
width of the
slip
ring
MUST NOT be reduced
by
more
is
in
the
proper
position
to
be
clamped
to
the blade
than
0.0005
inch.
The
contact
surfaces
of the
slip
retaining
clamp.
rings
must
have
a
finish of 29-35
microinches.
b.
Mask
off
an
area
approximately
1/2
inch from the
d.
Deburr
the
slip
ring
edges
and reinstall
in
the air-
end
of
each
side of
the boot.
Refer to
Figure
11-31.
plane
and
align.
c.
Remove the
deicer
boot and
strip
any
paint
in the
NOTE
masked
area
from the
retaining clamp
outboard.
If,
the solder
or
braze
connection
on
the
Clean the
area
thoroughly
with
methyl ethyl
ketone
or
I
underside of the
slip ring
is
exposed
by
toluol
(Item
19
or
20,
Consumable Materials
Chart).
machining, replacement
of
the
slip ring
For
final
cleaning,
wipe
the solvent
off
quickly
with
a
assembly
will
be
necessary.
clean,
dry,
lint-free
cloth
to
avoid
leaving
a
film.
11-60
515