(a)
Push spring arm into retracted position and remove screws joining seal curtain to wing fixed leading edge.
CAUTION: DO NOT DEFLECT SPRING PAST EDGE OF SKIN CUTOUT (NORMAL TRAVEL RANGE). PERMANENT SET IN SPRINGS MAY OCCUR.
(b)
Release spring arm slowly.
(c)
Remove bolt, washer and spacer holding springs to fixed leading edge roller support rib. Save or replace as required.
(d)
Remove spring ends from seal curtain tube and replace springs and/or seal curtain as required.
(2)
Install seal curtain assembly as follows:
(a)
Insert spring ends into seal curtain tube.
(b)
Mount both springs to fixed leading edge roller support rib using bolt, washer and spacer as shown in Fig. 401, Detail A. Insert end of springs into roller support rib.
(c)
Push spring arm into retracted position and using screws fasten seal curtain to wing fixed leading edge.
CAUTION: DO NOT DEFLECT SPRING PAST EDGE OF SKIN CUTOUT (NORMAL TRAVEL RANGE). PERMANENT SET IN SPRINGS MAY OCCUR.
(d)
Release spring arm.
500
May 01/00 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-81-51 Page 401
G42983G42997
Leading Edge Slat Aerodynamic Seal Installation 500
27-81-51 Figure 401 (Sheet 1) Oct 20/85
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Leading Edge Slat Aerodynamic Seal Installation
Feb 20/86 Figure 401 (Sheet 2) 27-81-51
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
G. Thermal anti-icing duct seal curtain assembly (Detail A).
(1)
Remove seal curtain assembly as follows:
(a)
Push spring arm into retracted position and remove screws joining seal curtain to wing fixed leading edge.
CAUTION: DO NOT DEFLECT SPRING PAST EDGE OF SKIN CUTOUT (NORMAL TRAVEL RANGE). PERMANENT SET IN SPRINGS MAY OCCUR.
(b)
Release spring arm slowly.
(c)
Remove nut, bolt, washer and spacer holding springs to fixed leading edge. Save or replace as required.
(d)
Remove spring ends from seal curtain tube and replace springs and/or seal curtain as required.
(2)
Insert seal curtain as follows:
(a)
Insert spring ends into seal curtain tube.
(b)
Mount both springs to fixed leading edge using nut, bolt, washer and spacer as shown in Fig. 401, Detail B. Insert end of springs into fixed leading edge.
(c)
Push spring arm into retracted position and with screws fasten seal curtain to wing fixed leading edge.
CAUTION: DO NOT DEFLECT SPRING PAST EDGE OF SKIN CUTOUT (NORMAL TRAVEL RANGE). PERMANENT SET IN SPRINGS MAY OCCUR.
(d)
Release spring arm.
H. Slat actuator seal door assembly (Detail B)
(1)
Remove seal door assembly as follows:
(a)
Hold seal door in position and remove nut, bolt and washers fastening seal door strap to adjustment slot on actuator. Repeat step for strap on opposite side of actuator.
(b)
Remove tension in springs by slowly sliding seal door aft along seal guide and spacer until clear.
(c)
Unhook springs and slide straps off seal door.
(d)
Replace seal door, springs and straps as required.
(2)
Install seal door assembly as follows:
(a)
Slide straps onto seal door.
(b)
Insert each spring through hole provided in seal door. Hook opposite end of spring to fixed leading edge.
(c)
Slide seal door inside seal guide and spacer.
(d)
Thread each strap through channel and fasten to adjustment slot on actuator shown in Fig. 401, Detail C.
NOTE: Do not stretch spring past normal travel range. Permanent set in springs may occur.
(e)
Position strap in adjustment slot to ensure smooth operation and alignment of seal door.
27-81-51 Oct 20/86
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
I. Auxiliary track seal door assembly (Detail C).
(1)
Remove seal door assembly as follows:
(a)
Slide seal door forward, press flat spring upward and slide seal door aft till flat spring clears auxiliary track structure.
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