S 424-026
(2)
Put the left and right upper seal sections on the seal retainers and make sure the bends in the seals match the contour of seal retainers.
S 824-009
(3)
Align the locator marks on seals (one at each bend) with the matching locator marks (red bands) on the seal retainers.
S 424-027
(4)
Install a 2-inch length of seal in retainer at each locator mark.
S 424-028
(5)
Install one edge of seal in its retainer, then install the other edge with a smooth, round-edged tool. Be careful not to bunch or stretch seal.
NOTE: Liquid soap lubricant may be used to ease installation of
____
seal in retainer.
S 424-029
(6)
Install another 2-inch length of seal halfway between the initial installation points on each seal and work back toward both initial points.
(7)
Make sure to remove the strecth on the seal at the bends.
S 824-013
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A
747-400 MAINTENANCE MANUAL
S 424-030
(8)
Install the remaining lengths of upper seals, working from corners to the fuselage centerline.
S 424-031
(9)
Cut the seal ends to get the flush butt joint and splice the seals together at the centerline (AMM 52-09-00/801).
S 424-032
(10)
With the middle locator mark on the long lower seal aligned with the locator mark on the retainer at the bottom centerline of the door, install a 2-inch length of seal at this point.
S 424-033
(11)
Install the 2-inch lengths of seal at 3-foot intervals outward in the two directions from the initial seal installation point.
S 214-015
(12)
Make sure the locator marks around door are aligned to keep the stretch on seal to a minimum.
S 214-016
(13)
Make sure that the lower seal ends overlap the installed upper seal ends.
S 424-034
(14)
Install the seal halfway between initial seal installation points and working back toward these points to complete the seal installation.
S 824-018
(15)
Cut the seal ends to get the flush butt joints and splice the seals together.
S 214-019
(16)
After the splices are cured, open and close the door several times to make sure that the seal will not tuck or turn, and that the seal lip touches the sealing flange evenly.
E.
Aerodynamic Seal Installation
S 424-035
(1) Install the left and right side seals by sliding upward through relief notches in the retainers approximately 1/3 up from the door bottom centerline.
NOTE: Liquid soap lubricant can be used to ease installation of
____
seal in retainer.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(2) S 424-036Install the left and right lower seals by sliding outward through relief notch in retainer at the door bottom centerline until the lower seal ends touch the side seals ends.
(3) S 424-037Move all the seals back to put the joints away from the seal retainer relief notches.
(4) S 424-038Cut the seal length to get the flush butt joints and splice the seals together.
(5) S 424-039Install the left and right upper forward corner seals with a smooth, round edge tool.
(6) S 424-040Install the upper forward seal in the retainer and cut the seal ends to get the flush butt joints with the forward corner seals and splice the seals together.
(7) S 424-041Install the upper side seals on the door by sliding forward in the retainers to touch the forward corner seals and cut seal ends to get the flush butt joints and splice the seals together.
(8) S 424-042Install the left and right hinge area seals on fuselage by sliding into the seal retainers.
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本文链接地址：747-400 AMM 飞机维护手册 舱门 DOORS 2(62)
