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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (3)  S 394-009-B00Put the sealant on the diaphragm seal between the door and the gates.
 (4)  S 434-007-B00Install the bolt that holds the control rod to the gate.

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A
737-300/400/500MAINTENANCE MANUAL
 FLAP TYPE MECHANICAL SEALS - REMOVAL/INSTALLATION
_________________________________________________
 1.  General_______
 A.  This procedure contains two tasks:
 (1)  
The removal of the seal that is around the edge of a door

 (2)  
The installation of the seal that is around the edge of a door.

 B.  
This procedure refers to these seals as the "flap-type seals". Flap-type seals are on the the forward and aft cargo doors, the equipment access door and the forward access door.

 TASK 52-09-12-004-001-B00
 2.  Flap-Type Seal Removal______________________
 A.  Access
 (1)  
Location Zone
 202 Lower Nose Compartment
 209 Forward Cargo Door
 219 Aft Cargo Door

 (2)  
Access Panels
 1103 Forward Access Door
 1201 Electronic Equipment Access Door

 B.  
Procedure

 S 864-002-B00
 (1)  
Open the door sufficiently to remove the flap-type seal.

 S 024-003-B00

 (2)
Pull the edge of the flap-type seal out of the seal retainer.

 S 024-004-B00

 (3)  
Continue to pull the flap-type seal out of the seal retainer until it is off the door.

 TASK 52-09-12-404-005-B00
 3.  Flap-Type Seal Installation___________________________
 A.  Special Tools and Equipment
 (1)  
Door Seal Installation Tool - SE52-1002

 B.  
Access

 (1)  
Location Zone
 202 Lower Nose Compartment
 209 Forward Cargo Door
 219 Aft Cargo Door

 (2)  
Access Panels
 1103 Forward Access Door
 1201 Electronic Equipment Access Door

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A 737-300/400/500MAINTENANCE MANUAL

DOOR ASSEMBLY FUSELAGE STRUCTURE
Figure 401

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A
737-300/400/500MAINTENANCE MANUAL
 C. Procedure
 S 424-006-B00
 (1) Hold the flap-type seal against the seal retainer on the door.
 S 424-007-B00
 CAUTION: BE CAREFUL WHEN YOU INSTALL THE FLAP-TYPE SEAL.
_______
 IT IS EASY TO CAUSE DAMAGE TO THE FLAP-TYPE SEAL.

 (2)  
Install the flap-type seal in each corner of the door.

 (a)  
Put the inboard (longer) flange of the flap-type seal into the inboard side of the seal retainer.

 (b)  
Use the special tool to push the outboard (shorter) flange of the flap-type seal into the outboard side of the seal retainer.

 NOTE: Hold the special tool 90 degrees to the seal retainer.
____
 S 424-008-B00
 (3)  Use the special tool to push the outboard edge of the flap-type seal into the seal retainer.
 NOTE: Liquid soap is a good lubricant for the flap-type seal.
　
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