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57-52-01
ALL ú ú 01 Page 403 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Inboard Trailing Edge Flap Seals Installation
Figure 401 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
57-52-01
ALL ú ú 01 Page 404 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(b)
Remove the fasteners that hold the two telescopic assemblies to the closure rib of the aft flap.
(c)
Remove the aft seal springs and the telescopic assemblies.
(d)
Put a cover on the closure rib to prevent it from damage and the weather.
S 024-007
(2) Remove the midflap seal.
(a)
Remove the fasteners from around the midflap closure rib that hold the seal retainer strips.
(b)
Remove the retainer strips to get into the seal assembly.
(c)
Drill the rivets that hold each spring retainer.
(d)
Remove the fasteners that keep the two telescopic assemblies on the midflap.
(e)
Remove the midflap seal assembly.
(f)
Put a cover on the closure rib to prevent it from damage and the weather.
S 024-008
(3) Remove the foreflap seal.
(a)
Remove the fasteners from around the foreflap closure rib that hold the seal retainer strip.
(b)
Remove the retainer strips.
(c)
Divide the velcro tapes that hold the seal in its position.
(d)
Drill the rivets that hold each spring retainer.
(e)
Remove the fasteners that keep the two telescopic assemblies on the foreflap.
(f)
Remove the foreflap seal assembly.
(g)
Put a cover on the closure rib to prevent it from damage and the weather.
TASK 57-52-01-404-009
3. Trailing Edge Flap Seals Installation
_____________________________________
A. References
(1) AMM 27-51-00/201, Trailing Edge Flap System
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57-52-01
ALL ú ú 01 Page 405 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(2)
AMM 27-51-02/401, Inboard Foreflap
(3)
IPC 57-52-51 Fig. 2 Aft Flap
B. Access
(1) Location Zone
576 Inboard Flap Foreflap, Left
577 Inboard Flap Midflap, Left
578 Inboard Flap Aftflap, Left
676 Inboard Flap Foreflap, Right
677 Inboard Flap Midflap, Right
678 Inboard Flap Aftflap, Right
C. Procedure
S 424-010
(1) Install the aft flap seal.
(a)
Remove the cover from the aft flap closure rib (if installed).
(b)
Install the springs in the spring tubes.
(c)
Put the aft flap seal assembly in its position.
(d)
Install the fasteners that hold each telescopic assembly.
(e)
Install the retaining strips with fasteners around the outer side of the aft flap closure rib to hold the bellow seal in its position.
(f)
Cut the seal (Fig. 402).
S 424-011
(2) Install the midflap seal.
(a)
Remove the cover from the midflap closure rib (if installed).
(b)
Put the midflap seal assembly in its position.
(c)
Install the fasteners that hold each telescopic assembly.
(d)
Install the spring retainers with rivets.
(e)
Install the retaining strips with fasteners around the outer side of the midflap closure rib.
(f)
Cut the seal (Fig. 402).
S 424-012
(3) Install the foreflap seal.
(a) Remove the cover from the aft flap closure rib (if installed).
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