Installation Of Pilot Door; Weather Strip And Sealing Instructions Of Pilot Door; 1G2 - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
4-81. INSTALLATION OF PILOT DOOR. (Refer to Figure 4-14.)
a. Carefully position the hinges onto the door hinge brackets and insert the hinge pins.
b. Prior to connecting the door support assembly, operate the door latching mechanism to
determine if there is a flush fit between the outer skin of the pilot door and the fuselage.
NOTE
If the fit is not flush, it will be necessary to remove the door and
rotate the serrated door hinge bushing or bushings to obtain hinge
center line location that will provide proper door fit.
c. Attach the support assembly to the door.
4-82. WEATHER-STRIP
INSTALLATION AND SEALING INSTRUCTIONS OF PILOT DOOR. To
obtain an acceptable seal on the pilot door. the seal must apply equal pressure all the way around the striker.
This is accomplished in the following manner.
a. Apply EC1300L cement to seal and mitered joints.
b. Install one piece of seal 87.00 in. from the forward lower corner up around to the aft lower corner of
the door and a piece 38.5 in. along the lower surface of the door.
c. If necessary, use shims (Neoprene PMS G0020-1-22) behind the seal to obtain equal pressure and
adequate sealing.
d. The striker and water path must be free of any sealant and foreign matter.
e. Install two pieces of clear plastic tubing 1/8 in. OD.. 5 in. long covered with a film of seal glyde or
Dow Corning lubricant Neoprene 0.125 thick Piper P/N 187-361.
f. Insert tube approximately 3 in. into the sealing bead of the striker prior to the sealing operation.
g. Remove all sharp edges from striker joints.
h. Fill in all irregular surfaces contacting the door seal with sealant.
i. Check to see that the latch plate on aft side of door frame extends only to center line of striker bead
and all edges are smooth to prevent tearing of seal.
j. Fill the empty space behind the forward and aft lower corner fillets of the door frame with sealant to
prevent water passing behind these plates to the aircraft interior
k. Seal the area between the scuff plate, bulkheads, outer skin and bulkheads with PRC 1221B-2 or
MIL S-7505C and smooth with a non-metallic tool.
I. Remove the two pieces of tubing prior to checking for leaks.
m. To check for open water path. funnel small amounts of water into the gap between the pilot door
and aircraft skin.
NOTE
The water should flow freely from the water path at forward and aft
corners of door.
n. Gradually increase the volume of water until water flows from the gap it is being funneled into.
o. A person inside the aircraft can ascertain the sealing of the door.
Revised: 3/11/81
STRUCTURES
1G2