Piper Warrior III - AFT WING ATTACH FITTINGS REPLACEMENT; REMOVAL; INSTALLATION

PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 3
Nov 30/064E15
53-20-00
2. Aft Wing Attach Fittings Replacement
NOTE: The following is basic guidance. More extensive disassembly may be required to remove the
rear attach fitting(s). Thoroughly access the job before beginning to determine if additional steps
or parts may be required. Consult the Piper Illustrated Parts Catalog (P/N 761-897) for
additional parts as required.
A. Removal
(1) Remove electrical power from aircraft by disconnecting the battery.
(2) Place jacks under wings and tail - tie down to stabilize aircraft.
(3) Remove seats, removable floorboards and interior panels necessary to gain access to the rear
wing attach fittings.
(4) On L/H side, remove bus bar assembly from spar.
(5) If necessary, drill off cargo compartment floor and remove from aircraft.
NOTE: If both fittings are to be changed, remove and replace one fitting at a time.
(6) Remove bolt from wing rear spar and fuselage attach fitting.
(7) Carefully drill out the rivets that attach the fitting to the spar.
(8) With all the rivets removed, remove wing attach fitting from the aircraft. Discard fitting.
(9) Clean and inspect the areas that were under bracket for any signs of corrosion.
(a) If corrosion is found, repair or replace parts as necessary. Coat the area with primer and
allow to dry.
(b) If no corrosion is found, coat the area with primer. Allow time to dry.
B. Installation
(1) Install new wing attach fitting and align rivet holes. It may be necessary to ream open the bolt
hole to proper size. The hole is close tolerance and should be .3745 / .3765 (3/8). Replace
attach fitting bolt should there be any sign of wear or corrosion.
(2) Re-rivet wing attach fitting into place with appropriate fasteners.
NOTE
: For hard to reach areas. it is permissible to replace the existing MS20470AD-5 rivets
with Hi Lok fasteners. Use HL30-5 with HL-94 Hi Lok collars. Torque to 15 to 25 inch
lbs. Observe standard practices for use of Hi Lok fasteners.
(3) Install wing spar and fuselage attach fitting bolt per 57-40-00.
(4) Seal edges of attach fittings with PRC PR1422 (or equivalent) before installing interior.
(5) Complete same process to the opposite side.
(6) Reinstall cargo door floorboard and interior and seats.
(7) Connect battery and check for operation.