PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 7
Nov 30/06
2I7
27-30-00
C. Rigging and Adjustment
CAUTION: VERIFY FREE AND CORRECT MOVEMENT OF STABILATOR. WHILE IT WOULD
SEEM SELF-EVIDENT, FIELD EXPERIENCE HAS SHOWN THAT THIS CHECK IS
FREQUENTLY MISINTERPRETED OR NOT PERFORMED AT ALL. ACCORDINGLY,
UPON COMPLETION OF STABILATOR RIGGING AND ADJUSTMENT, VERIFY
THAT THE REAR EDGE OF THE STABILATOR MOVES UP WHEN THE WHEEL IS
PULLED BACK; AND, THAT THE REAR EDGE OF THE STABILATOR MOVES DOWN
WHEN THE WHEEL IS PUSHED FORWARD.
(1) Level the airplane. (Refer to Section 8-20-00.)
(2) To check and set the correct degree of stabilator travel, the following procedure may be used.
(a) Check the stabilator travel by placing a rigging tool on the upper surface of the stabilator
as shown in Figure 2. (This tool may be fabricated from dimensions given in Figure 3.)
(b) Set on a bubble protractor the number of degree up travel as given in Chart 2, 27-00-00
and place it on the rigging tool. Raise the trailing edge of the stabilator and determine that
when the stabilator contacts its stops, the bubble of the protractor is centered.
NOTE: The stabilator should contact both of its stops before the control wheel contacts
its stops. (Refer to Figure 1, 27-10-00 for tee bar stops.)
(c) Set on the protractor the number of degrees down travel as given in Chart 2, 27-00-00
and again place it on the rigging tool. Lower the trailing edge of the stabilator and
determine that when it contacts its stops, the bubble of the protractor is centered.
(d) Should the stabilator travel be incorrect in either the up or down position, remove the tail
cone fairing by removing the attaching screws and with the use of the rigging tool and
bubble protractor turn the stops located at each stabilator hinge in or out (Refer to Figure 4,
27-20-00.) to obtain the correct degree of travel.
(e) Ensure that the lock nuts of the stop screws are secure and reinstall the tail cone fairing.
(3) To check and set stabilator control cable tension, the following procedure may be used:
(a) Ascertain that the stabilator travel is correct.
(b) Remove the rear closeout panel to allow access to the aft fuselage from the cabin.
NOTE: Place a stand under the tail before entering the aft fuselage.
(c) Secure the control column in the near forward position. Maintain 0.25 + 0.12 -0.03 inch
between the column and the stop bumper.
(d) Check each control cable for the correct tension as given in Chart 2, 27-00-00.
(e) Should tension be incorrect, loosen the turnbuckle of the lower cable in the aft section of
the fuselage and adjust the turnbuckle of the upper cable to obtain correct tension. Cable
tension should be obtained with the control wheel at the one-quarter inch dimension from
the stop and the stabilator contacting its stop.
(f) Check safety of all turnbuckles and bolts.
(g) With the tension of the upper cable correct and the control wheel still forward, adjust the
turnbuckle of the lower cable to obtain correct tension.
(h) Check the full travel of the control wheel with relation to the full travel of the stabilator to
determine that the stabilator contacts its stops before the control wheel contacts its stops.
With the control wheel in the fore and aft positions, the travel distance from the point
where the stabilator contacts its stops and the control wheel contacts its stops should
approximately equal. Adjust turnbuckles if incorrect.
(i) Install access panels.
To Next Page
Loading...
