FLAP TYPE MECHANICAL SEALS - REMOVAL/INSTALLATION
1. General
A.  A flap type mechanical door seal, installed around the perimeter of a door, is used to reduce air leaks from pressurized areas.
2.  Equipment and Materials
A.  Liquid soap
(1)  
Kelite Spraywhite

(2) 
 Turco 1526

B.  Door Seal Installation Tool - SE52-1002, or equivalent
3.  Remove Flap Type Mechanical Seal
A.  Position door as necessary to facilitate seal removal.
B.  Grip the lip of the door seal and by pulling and rolling the seal, disengage it from the seal retainer. Work around the seal until the seal is detached. (See figure 401.)
4.  Install Flap Type Mechanical Seal
A.  Slip seal over door and move into its approximate location near the seal retainer on the fuselage. Ensure that top, bottom, and corners o f seal are properly positioned and lip of seal is pointing outboard. Equalize stretch through entire seal and temporarily attach the seal to the door frame with strips of masking tape. (See figure 401.)
B.  Install the seal in the seal retainer at each corner.
(1)  
First install the inboard seal edge into the inner side of the seal retainer.

(2)  
Using the door seal installation tool, SE52-1002, push the outboard edge of the seal into the retainer. If seal is pushed square to seal edge, excessive bunching will be avoided.

CAUTION:  USE CARE IN INSTALLATION OF SEAL TO PREVENT CUTS, TEARS OR PUNCTURES.
NOTE: Liquid soap may be used to lubricate seal during installation.
500 
May 15/71  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  52-09-121 Page 401 

Flap Type Mechanical Door Seal Installation  500 
52-09-121  Figure 401  May 15/71 
Page 402 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

C.  Install seal in seal retainer at points midway between corners using the method described in step B.(2). Ensure that the section of seal installed at each midpoint is approximately two to three inches long.
D.  Install remainder of the seal by working from the midpoints to the corners until all the seal is fitted into the seal retainer.
E.  Smooth out excessive wrinkles in the lip o f seal.
F.  Close and lock door. Visually check that seal lip bears smoothly and evenly on the edge of the door.
500 
Nov 15/67  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  52-09-121 Page 403 

BULB TYPE MECHANICAL SEALS - REMOVAL/INSTALLATION
1. General
A.  A bulb type mechanical door seal, installed around the perimeter of a door or latch, is used to reduce air leaks from pressurized areas.
2.  Equipment and Materials
A.  Shims, 0.06 inch
B.  Silicone Sponge Rubber Windlace Cord, 3/8 inch diameter, BMS 1-45, or equivalent
C.  Leather punch, 0.09 inch diameter hole
D.  Metal washers, o.125 inch inside diameter
3.  Remove Bulb Type Mechanical Seal
A.  Position door as necessary to facilitate removal of seal.
B.  Bend bulb section of seal away from locator angle and remove screws attaching seal retainer angle to door. (See figure 401.)
C.  Continue around perimeter of seal until seal is free to be removed from door.
4.  Install Bulb Type Mechanical Seal
A.  Position door as necessary to facilitate seal installation.
B.  Position seal around door with its longer side at forward (hinge) edge, and with cutout sections correctly located along upper and lower gate hinges. (See figure 401.)
C.  Install seal temporarily at any one door corner.
(1)  
Place seal tightly against flange of locator angle on main part of door and around corner to its location on gate hinge. (See detail A.)

(2)  
Locate and punch hole in seal attachment flange to align with hole in locator angle, adjacent to corner.

(3)  
Temporarily install screw and washer tightening until washer just begins to squeeze rubber.

500 
Nov 15/67  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  52-09-131 Page 401 

Mechanical Door Seal Installation  500 
52-09-131 Page 402  Figure 401 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Nov 15/67 

500  Mechanical Door Seal Installation 
　
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