Piper PA-28-161, Maintenance Manual

Page: 340 / 1104

PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 2
Nov 30/06
2G8
27-00-00
2. Standard Practices and Procedures
The following tips may be helpful in the removal, installation, and rigging of individual control system
assemblies.
A. It is recommended, though not always necessary, to level and place the airplane on jacks during
rigging and adjustment.
B. Remove turnbuckle barrels from cable ends before withdrawing the cables through the structures.
C. Tie a cord to the cable end before withdrawing the cable through the structures to facilitate
installation of cable.
D. Mark cable ends, etc., before disconnecting, use a felt tip marking pen.
E. Assemble and adjust the turnbuckles so that each terminal is screwed an approximately equal
distance into the barrel. Do not turn the terminals in such a manner that will put a permanent “twist”
into the cables.
F. Cable tensions should be taken with the appropriate control surface in its neutral position.
NOTE: Cable rigging tensions specified must be corrected to ambient temperature in the area
where the tension is being checked, using Chart 1. When installing new cables, initially
tension them 20 to 30 % over nominal tension, then loosen them to the “High Side” of the
tolerance. This “pre-stretching” will aid in maintaining specified tension after flight testing.
G. Check all cable ball ends for proper seating in retainers after setting cable tension.
H. After completion of each adjustment, check the turnbuckles to be sure not more than three terminal
threads are visible outside the barrel. Install the locking clips, and check for proper installation by
trying to remove the clips using fingers only. Both locking clips may be installed in opposite holes.
Locking clips which have been installed and removed must be scrapped and not reused.
Turnbuckles may be safetied in accordance with Advisory Circular 43.13-1, latest revision.
I. When pushrods or rod ends are provided with an inspection hole, the screw must be screwed in far
enough to pass the inspection hole. This can be determined visually or by feel, inserting a piece of
wire into the inspection hole. If no hole is provided, there must be a minimum of .375 (3/8) of an
inch thread engagement.
J. When installing/adjusting rod end jamnuts, refer to Figure 2, 20-00-00, for proper method.
K. After completion of adjustments, each jam nut must be tightened securely.
NOTE: Torque all nuts in the flight control system (including nose wheel steering). Refer to
91-10-00, Chart 2.
L. Ensure all pulley guard pins are properly installed and secured.