(d)  
P415 Power Distribution Center Right
 1) 415H28 LAV WTR HTR UPD DK 4U

 S 014-003
 CAUTION:_______PUT COVERS ON THE TRIM TO PREVENT DAMAGE. MAKE SURE ALL TUBES, HOSES AND WIRES ARE TIED CLEAR OF THE STRUCTURE TO PREVENT DAMAGE DURING REMOVAL OF THE LAVATORY.
 (2)  
Remove adjacent upper deck ceiling panels if it is necessary (AMM 25-22-03/401).

 S 014-004

 (3)  
Remove upper deck passenger seats if it is necessary (AMM 25-25-01/401).

 S 024-060

 (4)  
Remove the lavatory door if it is necessary.

 S 024-070

 (5)  
Remove items from the lavatory.

 S 864-006

 (6)  
Turn the water shut off valve to "CLOSE".

 S 864-007

 (7)  
Release the pressure to the water system (AMM 38-15-00/201).

 (8)  
Open the faucet to drain water in the water supply line.

 (9)  
Remove the toilet shroud.

 (10)
 Remove the toilet assembly (AMM 38-15-00/201).

 (11)
 Disconnect and cap the waste line of the vacuum toilet.

 S 864-008
 S 024-071
 S 024-072
 S 024-073
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 25-40-03
 ALL  ú ú 07 Page 404 ú Feb 18/00
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A
747-400 MAINTENANCE MANUAL
 S 024-074
 (12)
 Disconnect and cap the toilet rinse line.

 S 684-061

 (13)
 Drain the remaining water into a one gallon container.

 S 024-062

 (14)
 Remove the clam shell fitting that holds the waste service line to the discharge pipe.

 S 424-075

 (15)
 Disconnect the oxygen supply hose.

 S 024-076

 (16)
 Install protective caps and plugs to open oxygen lines and ports.

 NOTE: Before maintenance, read the safety precautions of the
____ oxygen system and the general maintenance instructions (AMM 35-00-00/201).
 S 024-085
 (17)
 Disconnect the items that follow:

 (a)
Electrical connector from the lavatory module

 (b)
Ground jumper wires

 (c)
Ventilation duct

 (d)
Gasper outlet duct

 (e)
Water supply fitting and drain fitting.

 (18)
 Remove the bolts from the hard point attachment.

 (19)
 Remove the lavatory module.

 S 024-086
 S 024-022
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 ALL  ú ú 09 Page 405 ú Feb 18/00
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A
747-400 MAINTENANCE MANUAL
 TASK 25-40-03-404-057
 3.  Upper Deck Lavatory - Installation (Fig. 401)__________________________________
 A. Consumable Materials
 (1)  
B00148 Solvent - Methyl Ethyl Ketone (MEK),
 TT-M-261

 (2)  
C00308 Compound-corrosion preventive,
 MIL-C-11796, Class 3

 (3)  
G00000 Compound-corrosion inhibiting, BMS 3-26,
 Type II

 B. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 25-22-03/401, Upper Deck Ceiling Panels

 (3)  
AMM 25-25-01/401, Passenger Seats

 (4)  
AMM 35-00-00/201, Oxygen

 (5)  
AMM 38-15-00/201, Water Tank Pressurization

 (6)  
AMM 38-32-01/401, Toilet Assembly

 (7)  
IPC 25-40-03

 (8)  
WDM 24-51-26

 (9)  
WDM 24-51-46

 (10)
 WDM 24-54-11

 (11)
 WDM 24-54-41

 (12)
 WDM 24-54-24

 (13)
 WDM 24-54-44

 (14)
 WDM 25-41-11

 (15)
 WDM 25-42-02

 (16)
 WDM 33-26-01
　
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