Forward Lavatory Ceiling Panel Installation 5C8
25-40-5 Figure 401 Jun 20/85
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
3. Install Ceiling Panel (Fig. 401)
A. If required, install service unit (standard passenger airplanes) and dome light in ceiling panel.
B. Position and temporarily secure panel to accomplish the following steps C through G.
C. On Standard Passenger Airplanes without ATI Interior,
(1)
Remove caps from oxygen connections and connect oxygen supply line to service unit connector.
(2)
Torque oxygen connection and test connection for leaks (Ref Chapter 35, Passenger Oxygen System).
CAUTION: HOLD OXYGEN INLET FITTING WITH WRENCH WHEN TORQUING LINE FITTING. TORQUE MUST NOT EXCEED 135 POUND-INCHES. EXCESSIVE TORQUE MAY DAMAGE CONNECTION THREADS.
D. Connect dome light electrical wiring and remove connection information tags.
E. Provide electrical power (Ref 24-22-00, MP).
F. Close circuit breakers previously opened.
G. Check that lavatory dome light is illuminated.
H. Remove temporary ties, position panel above trim strip, install panel attachment screws and allow panel to contact trim strip.
NOTE: Do not allow panel to contact velcro tape on trim strip until attachment screws are installed.
I. Install snap-in plug buttons.
J. Remove electrical power if no longer required (Ref 24-22-0, MP).
5C8
Jun 20/85 25-40-5 Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
AFT LAVATORY PARTITION - REMOVAL/INSTALLATION
1. General
A. The aft lavatory partition forming the forward wall of the lavatory is a permanent-type installation secured to the ceiling, sidewall, and floor structure.
B. An attendant's seat, acoustical panel, mirror and light are attached to the partition, which may remain attached, if the partition is to be reinstalled immediately. However, all electrical wiring to the partition must be disconnected before removal of the partition is attempted.
C. This procedure applies to the front partition of either the left or right lavatory. Any exceptions are noted.
2. Equipment and Materials
A. Sealant - BMS 5-95, Class B (Ref 20-30-11)
B. Sealant - BMS 5-108, Type 1, Class B-2 (Ref 20-30-11)
C. Sealant - 30-079 Silicone (Ref 20-30-11)
D. Solvent - General Purpose, BMS 3-2 (Ref 20-30-31)
E. Tape - Double-backed, 971 Minnesota Mining and MFG., Permacel P50L (Ref 20-30-51)
F. Tape - Permacel 306, 10 MIL thick, 18 inches wide (Ref 20-30-51)
G. Tape - Permacel 306, 10 MIL thick, 3 inches wide (Ref 20-30-51)
3. Prepare to Remove Partition
A. Open LAV MIRROR LIGHTS circuit breaker on P18 and P6 circuit breaker panels.
B. Remove attendant's seat (Ref 25-25-21, Aft Cabin Attendant's Seat).
C. Remove ceiling panels required for access (Ref 25-21-361, Aft Lowered Ceiling Installation).
D. Remove lavatory ceiling panel (Ref 25-40-9, Aft Lavatory Ceiling Panel).
E. Remove door and header (Ref 25-40-7, Aft Lavatory Door and Header).
4. Remove Partition (Fig. 401)
A. Remove light and mirror.
(1)
Remove cover and light tubes.
(2)
Remove screws from light base and move base to provide clearance for removal of mirror.
(3)
Pull mirror free from velcro tape and remove for safekeeping.
B. Remove floor pan.
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