Piper Cherokee Six - Page 184

PIPER
CHEROKEE SIX
SERVICE MANUAL
5-21.
RIGGING AND ADJUSTMENT
OF STABILATOR TRIM. (Refer
to Figure
5-8.)
a. Level the airplane. (Refer to Leveling, Section II.)
b. Check for proper stabilator trim cable tension as given in Table V-I. If
cables were disconnected,
rotate control wheel several times
to allow the cables
to seat and
recheck
tension.
c. Secure the stabilator in neutral position. To find neutral, place a rigging
tool on the upper surface
of the stabilator as shown in Figure
5-6. Zero a bubble
protractor, set it on the rigging
tool and tilt the stabilator until
the bubble is
centered.
d. With the
stabilator centered,
turn the trim
wheel (1) until
the aft end of the
turnbuckle (10) of
the right trim cable (8) is approximately
two inches forward of
the double pulleys (13) at the top of the rear bulkhead at station 259.0.
e. Check that the trimscrew(23)
is turned downuntil thecotter
pinstop in the
top
of the screw is contacting the plate
(17) on the horizontal support
rib (16) of
the trim assembly. If the stop
is not contacting the plate, and the
links (25) be-
tween
the screw (23) and the trim control
arm (28) are not disconnected,
discon-
nect the two by removing the nut,
washers and bolt (24). With the
turnbuckle still
at the two inch dimension from the pulley, turn the screw down until the pin con-
tacts the plate.
f. Check the rod end (26) on the tab actuating arm (28) for approximately six
threads forward of the jam nut (27).
g. Connect the links to the trim screw and secure with bolt, washers and nut.
h. Turn the trim control wheel
until the trim tab streamlines
with the neutral
stabilator.
i . Check the bubble of the protractor over the neutral tab and then check tab
travels
as given in Table V-I. The degree
of travel on the protractor
is deter-
mined by taking
the difference between the
protractor reading at neutral and
up,
and
neutral and down. The bubble must
be centered at each reading with
the air-
plane level.
j . To obtain correct travels, if incorrect, adjust by disconnecting the links
(25) at the actuating arm
rod end (26) and turning the end
in or out as required.
Reconnect
links
to rod end.
k. Secure the jam nut (27) on the actuating arm rod end.
l. Turn the trim wheel
to full travel and check for turnbuckle
clearance and
location
of tab
indicator.
SURFACE
CONTROLS
Issued:
8/17/72
1H16