Leveling And Rigging - Piper CHEROKEE 180 Owner's Handbook Manual

SECTION VI
CHEROKEE 180
LEVELING AND RIGGING
Leveling
the
Cherokee
"F"
for
purposes
of weighing
or rigging
is
accomplished as
follows:
1. Partially withdraw
two
machine screws located
immediately
below
the
left front
side
window.
These screws
are
leveling
points,
and
the
airplane
is longitudinally level
when a
level placed
on
the
heads
of
these screws indicates
level.
2.
To put
the airplane
in
a longitudinally
level position
on scales,
first block
the
main
gear
oleos
in
the
fully
extended
position,
then
deflate
the nose wheel tire until the
proper
attitude
is
obtained.
For
rigging only,
the airplane
may
be placed
on
jacks
for
leveling.
3.
To
level
the
airplane
laterally, place
a
level across the baggage
compartment
floor
along the
rear bulkhead.
Rigging: Although
the
fixed
flight
surfaces
on
the
Cherokee
cannot
be
adjusted
for
rigging
purposes,
it may
be
necessary
upon
occasion
to
check
the
position
of these surfaces. The movable surfaces
all
have
adjustable stops, as well as
adjustable
turnbuckles
on the
cables
or
push-pull
tubes,
so
that their
range
of
travel can
be
altered.
The
positions
and
angular
travels
of the
various surfaces
are
as follows:
1. Wings:
7°
dihedral,
2°
washout.
2.
Stabilator
Travel: 14
°
up,
2°
down,
tolerance
±1°.
3. Fin
should
be
vertical
and
in line with center
of
fuselage.
4. Aileron Travel:
30°
up,
15°
down,
tolerance
±2°.
5. Flap Travel:
10°, 25°,
40°,
tolerance
±2°.
6. Rudder Travel:
27°
right and
left,
tolerance
±2°.
7. Stabilator Tab Travel:
3°
up,
12°
down, tolerance
±1°.
Cable
tensions
for the various controls are
as
follows:
Rudder: 40 ±5 #
Stabilator:
40
±5 2
Ailerons:
40
±5
#
Stabilator
Trim:
10 ±1#
Flaps:
Approx.
10
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