F.  Remove Panel No. 3
(1)  
Remove aft attendants’ service unit (Ref 25-23-71).

(2)  
Remove snap-in exit light lens over aft entry door.

(3)  
Remove aft left windscreen (Ref 25-24-131).

(4)  
Remove fasteners at inboard edge.

(5)  
Pull panel inboard and forward to release outboard and aft edges.

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G.  Remove Panel No. 4
(1)  
Remove snap-in exit lens over aft galley service door.

(2)  
Loosen hose clamp on exhaust air hose and disconnect hose from aft galley exhaust air inlet.

(3)  
Remove galley stowage unit and attachments which protrude through panel No. 4 (Ref 25-31-61).

(4)  
Remove curtain and curtain track from panel No. 4

(5)  
Remove fasteners at inboard edge of panel No. 4.

(6)  
Pull panel inboard and forward to release outboard and aft edges.

H.  Remove Panel No. 7
(1)  
Remove plug buttons which conceal fasteners on lower surface of panel No. 7 at left, right and forward edges.

(2)  
Remove fasteners attaching panel to support structure and remove panel.

I.  Remove Panel No. 8
(1)  
Remove one fastener on outboard edge of panel No. 8.

(2)  
Remove fasteners along two sides of notch in panel.

(3)  
Remove row of fasteners above inboard edge of panel and remove panel.

3.  Install Aft Lowered Ceiling Panel (Fig. 401)
A.  Install Panel No. 8
(1)  
Locate panel and install fasteners above inboard edge of panel.

(2)  
Install fasteners along two sides of notch in panel.

(3)  
Install one fastener in outboard edge of panel.

B.  Install Panel No. 7
(1)  
Place panel in position, insert fasteners through lower surface of panel and secure to support structure.

(2)  
Install plug buttons in panel No. 7 to conceal fasteners.

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Jun 20/83  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  25-21-361 Page 403 

C.  Install Panel No. 4
(1)  
Insert outboard and aft panel edges into interior lining attachments.

(2)  
Install fasteners at inboard panel edge.

(3)  
Install galley stowage unit and attachments which protrude through panel No. 4
(Ref 25-31-61).

(4)  
Install snap-in exit light lens over aft galley service door.

(5)  
Connect exhaust air hose to aft galley exhaust air inlet and tighten hose clamp.

(6)  
Install curtain and curtain track on panel No. 4.

D.  Install Panel No. 3
(1)  
Insert outboard and aft edges into interior lining trim attachments.

(2)  
Install fasteners at inboard edge.

(3)  
Install aft left windscreen (Ref 25-24-131).

(4)  
Install snap-in exit light lens over aft entry door.

(5)  
Install aft attendant’s service unit (Ref 25-23-71).

E.  Install Lowered Ceiling End Cap
(1)  
Raise end cap into mounting position and loosely install fasteners to secure it to overhead support structure.

(2)  
If necessary, loosen fasteners securing outboard attaching brackets to end cap panels and slide end cap forward or aft as required to provide a gap of 0.75士0.10 inch between end cap panel and adjacent curved ceiling panel.

(3)  
Tighten fasteners to secure attaching brackets to end cap panels.

(4)  
Place each top panel in position on end cap support channel and push inboard edge into air conditioning ceiling outlet.

(5)  
Install three screws to secure each top panel to support channel.

(6)  
Install emergency exit light.

(8)  
Connect wire bundle to emergency exit light and lavatory occupied lights.

(9)  
Raise curved ceiling panels installed adjacent to lowered ceiling end cap (Ref 25-21-341 M/P).

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F.  Install Panel No. 5 or 6
(1)  
Support panel in mounting position and install fasteners at inboard and aft edges.

(2)  
Connect bracket on outboard edge to overhead support structure.

(3)  
Connect brackets attaching trim strip on panel aft edge to fuselage structure and to sidewall extrusion.
　
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