Piper Cherokee Six - Page 173

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
4.
Should
the three
points
not
contact,
loosen
the
jam nut
at the
aft end
of
the
control
rod
and
rotate
the rod
until
the
three
points
contact.
Apply
a
slight
up pressure
against
the
trailing
edge
of
the aileron
while
making
this
adjustment.
After
adjustment
retighten
the
jam
nut. The
ailerons
may
be allowed
to "droop"
by approximately
1/8
of an
inch
at
this
point.
c.
Adjust
primary
and
balance
cable
tension
as given
in
Table
V-I,
by the
following
procedure:
1. Remove
the
floor panel
that
is located
directly
aft of the
main spar
by removing
the
center
seats,
seat
belt attachments
and
the
screws
securing
the
panel.
2.
Loosen
the
connecting
bolts
of
the idler
cross-over
sprockets
at the
control
tee
bar
to allow
the
chain
to fit snug
around
the
control
wheel
sprockets
and
over the
idler
sprockets.
3.
Ascertain
that
both bellcranks
are at neutral
position.
4. Adjust
the
turnbuckles,
located
in the
floor
opening
aft of
the main
spar,
of the
primary
and balance
cables
to proper
cable
tension
and maintain
neutral-center
position
of
the control
wheels.
To obtain
neutral
position
of
both
control
wheels,
it may
also
be
necessary
to adjust
the roller
chain
turnbuckle
located
between
the control
wheel
sprockets.
During
adjustment
obtain
a little
more
tension
on the
primary
control
cables
to
hold
the
bellcranks
in neutral
against
the
rigging
tools,
finishing
with
even tension
on
all cables.
5. Tighten
the bolts
to secure
the idler
cross-over
sprockets.
6.
Remove
the
aileron
bellcrank
rigging
tool
from
each
wing.
d.
Check the
ailerons
for
correct
travel
from neutral
per
dimensions
given in
Table
V-I,
by
the
following
procedure:
1. Center
the
bubble
of
a protractor
over the
surface
of
an aileron
at
neutral
position
and note
the reading.
2.
Move
the aileron
full
up
and down,
and
check
the
degree
of travel
for
each
direction.
The
degree
of travel
on
the
protractor
is
determined
by taking
the
difference
between
the
protractor
reading
at
neutral
and up,
and
neutral
and down.
The
bubble
must
be centered
at each
reading.
3.
Should
the
travel
not
be correct,
the travel
may
be
set by
rotating
the
bellcrank
stops
in
or out.
Stops
are
located
in the
wing
attached
to
the
rib that
is adjacent
to the
aileron
bellcrank.
4. Repeat
this
procedure
for the
other
aileron.
e. Check
the
bellcrank
stops
to assure
that
the
bellcrank
contact
is
made
simultaneously,
but
still have
cushion
before
contacting
the control
wheel
stops.
Maintain
.030
to .040
clearance
between
sprocket
pin and
adjustable
stop
bolts on
models
having
adjustable
tee
bar stops.
f.
Check
control
operation,
and bolts
and
turnbuckles
for
safety.
g. Install
access
plates
and panels.
h.
Should
an out-of-trim
condition
persist
despite
all the
rigging
corrections
that can
be
made,
there
is a possibility
that
the trailing
edge of
the
aileron
has been
used
to
move
the
aircraft
forward,
This
can
result
in a
slight
bulging
of
the
aileron
contour
at
the
trailing
edge
which
will cause
an
out-of-rig
condition
that
is very
difficult
to correct.
Revised:
7/29/77
SURFACE
CONTROLS
1H5