Raytheon Beech Baron E55 - Page 256

Raytheon
Aircraft
BEECH BARON
55
AND
58
SHOP
MANUAL
b.
If
the
static
torque
of
the
clutch
is less than
30
inch-pounds,
burn
in
the
clutch
as
follows:
1.
Find
a
metal
plate
of sufficient
thickness for
rigidity
and
large
enough
to
fit in
a
vise
with
the
actuator
assem-
bly
attached. Anchor
the
plate
in
a
vise
and drill three
holes
in
the
plate
to
match
the
actuator
mounting
holes.
Bolt
the
actuator
to
the
plate.
2.
Slot
the
endof
a
tube
that
will
fit
snugly
into
the
0.437-inch-diameter
hole
in
the
end
of
the
shaft
on
which
the
drum is
mounted.
3.
Insert
the
tube
into
the
shaft
until
the slot
engages
the drum
retaining pin.
4.
Attach the
free
end
of
the
tube
to
a
slow
speed
(approximately
450
rpm)
half-inch
drill
motor.
5.
Remove
the
access
plate
from
the clutch
housing
and
blow
the
housing
and
clutch clean
with
clean
dry
air.
6.
Using
a
regulated
power
source
set at
14
to
16
vdc,
connect
the
red
electrical
lead
of
the
clutch
to
ground
and
the
white
electrical lead
to
the
power
source
with
alligator clips.
7.
Start
the
drill
motor
and
unclip
the
lead
to
the
power
source
after
15
seconds. Let
the
clutch
cool
for
approx-
imately
one
minute
before
reattaching
the
lead for
another
15-second
interval.
Repeat
the
foregoing
sequence
until
the
clutch
will hold
30
inch-pounds
of
torque
as
indicated
in
step a,
then
blow the clutch and
housing
clean with
clean
dry
air.
I
cnvTlow
1
CAUTION
Exceeding
the
15second
burn-in
periods
may
overheat
and
damage
the
magnetic
clutch.
MOTOR
LUTCH HOUSING
LUTCH ROTOR
rrWI~------CLUTCH
ARMATURE
.010
TO
.015
~s
SETSC
RE
WS
CABLE
DRUM
SHAFT
ABLE DRUM
0-----~CABLE
RETAINnNC
PIN
90~133-8
Electric
Trim
Tab
Actuator
Figure
4-18
4-48
E16