Piper Cherokee Six - Stabilator Balance

Mass
Balance
Weight
Non-Adjustable
Balance
Weight
PA-32R-300
Only
Figure4-16
Stabilator
Balance
4-34.
BALANCING
STABILATOR.
(Refer
to
Figure4-16)
Prior
to
balancing
the
stabilator,
tape
the
trim
tab
in
the
neutral
position
with
a
small
piece
of
tape.
For
balancing,
the
stabilator
assembly
must
be
complete,
including
the
trim
tabs,
the
tab
push
rod
and
end
bearing,
stabilator
tips
and
all attaching
screws.
Place
the
complete
assembly
on
the
knife
edge
supports
in
a draft
free
area
and
insure
unrestricted
movement.
Position
the
platform
scale
and
spindle
approximately
midway
between
the
hinge
points
and
on the
stabilator
rear
spar.
The
spindle
should
not
be in
contact
with
any
part
of the
trim
tab.
Place
the
protractor
on
the
balance
weight
arm
and
adjust
the
height
of
the
screw
jack
as
required
to
position
the
arm
in
the
level
position
or 0.0
°
+ .5
°
with
the
horizontal.
Remove
the
protractor
and
record
the
scale
reading.
Measure
the
horizontal
distance
between
the
hinge
line
and
the
screwjack
point
of
contact,
"D"inches.
Determine
the
weight
of the
screwjack
and
subtract
this
weight
from
the
above
scale
reading
to obtain
the
weight
"W"
of
the
stabilator.
Multiply
the
weight
"W"
times
the
distance
"D"
to obtain
the
static
balance
in inch-pounds.
This
value
shall
be
within
the
limits
given
in
Table
IV-II.
If
the
static
balance
of
the
stabilator
is
not
within
the
limits
shown,
proceed
as
follows:
a.
Heavy:
Remove
weight
from
the
mass
balance
weight
until
the
static
balance
is
within
limits.
b.
Light:
Add
weights
to
the
mass
balance
weight
until
the
static
balance
is
within
limits.
(Refer
to
Parts
Catalog
for
balance
weight
part
number.)
If
the
stabilator
is overbalanced
(nose
heavy)
as
may
be possible
on
an unpainted
stabilator,
place
the
scale
and
screw
jack
under
the
balance
weight
and
proceed
as above.
NOTE
On PA-32R-300
do
not attempt
to adjust
the
stabilator
tip balance
weight.
Revised:
12/4/79
STRUCTURE
PIPER
CHEROKEE
SIX
SERVICE
MANUAL
1G2