Raytheon Beech Baron E55 - Page 273

Raytheon
Aircraft
BEECH
BARON
55
AND
58
SHOP
MANUAL
c.
17.5
inch-pounds
on
TC-502
through
TC-546
equipped
with
original
beaded
skins
and
utility
baggage
door
or
authorized
spare
replacement
beaded
skin
for
airplanes
with
utility
baggage
door.
d.
18.0
inch-pounds
on
TC-547
and after
equipped
with
smooth
skin
original
equipment
or
authorized
spare
re-
placement.
e.
12.4
inch-pounds
on
TE-1
through
TE-875
and
TH-1
through
TH-257
equipped
with
original
or
authorized
spare
replacement
12.4
in. Ibs.
f.
14.0
inch-pounds
on
TE-876
and
after
and
TH-258
and
after
equipped
with
original
or
authorized
spare
replace-
ment.
CHECKING
BALANCE
The
elevator
balance
must
be
checked in
a
draft-free
area
with the
elevator
completely
assembled
in
flying
condi-
tion.
All
painting,
including
stripes
and
touch-up,
must
be
completed.
The
tab,
tab
pushrod,
static
wicks,
and
hinge
bolts
must
be
attached.
The
chord
line
must
be
horizontally
level
and the
hinge
line
must be
properly
supported
when
the
static
moment
is
measured.
Although
many
different
methods
of
check
balancing
exist,
they
can
be
categorized
under
the
following
two
headings:
a.
Counterbalancing
The
application
of
a
known
force
or
weight
at
a
measured distance from the
hinge
line
to
counter
the unbalance
moment
of the
elevator
assembly.
b.
Actual
Force
Measurement
A
measurement
of
the force
applied by
the elevator surface
on a
single
support
at
a
known
distance from
the
centerline
of
the
hinge.
FORCE
MEASUREMENT
METHOD
I
CHECK
BALANCE BY
FORCE
MEASUREMENT
The
equipment required
to
perform
the
check
balance
by
force
measurement
is
as
follows:
a.
A
stand
with
knife-edge
supports
as
illustrated in
Figure
4-26.
The
knife-edges
should
be
in
the same
horizontal
plane.
b.
A
certified
beam balance
calibrated in
units
of
0.01
pound
or
less.
The
balance
should have
a
flat
weighing
plat-
form
and
its
capacity
should
equal
tare
plus
a
minimum
of
2.0
pounds.
c.
A
support
spindle
similar to
the illustrations
and
leveling
blocks,
as
required. (Blocks spindle
tare).
d.
A
straightedge,
rule
and
spirit
level.
BAL4NCING
PROCEDURE
FORCE
MEASUREMENT METHOD
a.
Locate
the
chord
line
by
placing
a
straightedge
at
the
inboard
end of
the
elevator
so
that
one
end
is
aligned
with
the
center
of the
torque
tube
and
the other end
is centered
on
the
trailing
edge.
b.
Mark the chord
line
by
grease
pencil
or
other
means on
the
rib. Remove
the
straightedge.
c.
Fit
correct
sized
bolts
in
the
outboard
and
center
hinge
brackets
and
mount
the
elevator
on
the
knife-edges.
Ensure
that it is
free
to
rotate
about the
hinge
line.
d.
Support
the
trailing
edge
behind
the
center
hinge
point
spindle
resting
on a
leveled
beam
balance
platform
as
illustrated.
The
spindle
must
be
vertical
throughout
the
balancing
procedure.
E16
4-65