(a)  415D35 UPR DK LAV FLUSH MOTOR U-21
 D. Flush Switch Installation Test
 S 864-018
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 714-019

 (2)  
Turn the flush handle and make sure that the toilet flushes correctly.

 S 864-020

 (3)  
Remove the electrical power if it is not necessary
 (AMM 24-22-00/201).

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747-400 MAINTENANCE MANUAL
 TOILET TANK - REMOVAL/INSTALLATION
__________________________________
 1.  General_______
 A.  This procedure has two tasks. The first task removes the toilet tank. The second task installs the toilet tank.
 B.  Make sure that you read and obey the specified instructions in the Standard Procedures for work with the Toilet Waste and Equipment (AMM 38-32-60/201).
 TASK 38-32-65-654-001
 2.  Toilet Tank___________
 A.  Reference
 (1)  AMM 12-17-61/301, Toilet Tank - Servicing
 B.  Access
 (1)  Location Zone 224 Upper Deck Crew Rest Body Sta 385 to 632, Right
 C.  Prepare for the Removal
 S 864-002
 (1)  
Do the steps in AMM 12-17-61/301 to drain, rinse and add the chemical precharge to the toilet tank.

 S 864-003

 (2)  
After 5 minutes, drain the chemical precharge from the toilet tank.

 S 864-057

 (3)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P414 Power Distribution Panel - Left 1) 414C15 LAV LIGHTS GHB 2) 414E19 DRAIN VALVE LAV TANK U-21 3) 414F23 FILL CONTROL LAV TANKS

 (b)  
P415 Power Distribution Panel - Right 1) 415D35 UPR DK LAV FLUSH MOTOR U-21

 (4)  
Open the latches at the bottom of the toilet shroud.

 (5)  
Remove the toilet shroud.

 S 014-006

 (6)  
Do these steps to get access to the aft side of the toilet shroud wall.

 S 014-004
 S 014-005
 NOTE:____The toilet shroud wall is the aft wall of the lavatory. It connects to the door wall.
 (a)  Remove the closure strip for the ceiling panel aft of the partition.
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747-400
MAINTENANCE MANUAL

PARTITION INSTALLATION
SEE A
TOILET FLUSH TIMER
CEILING 
PANEL  CLOSURE STRIP 
LATCHES  ASSEMBLY 
TOILET TANK 
SHROUD TOILET  SEE  E 
SCREW, 
WASHER  SIDEWALL 
PANEL 
GAP 
COVER 
LAVATORY 
WALL  DADO 
PANEL 
PARTITION 
SEE  B 
SCREW, 
WASHER  COVER  SCREW 
(2 LOCATIONS)  ASSEMBLY 
SEE  C 
PARTITION INSTALLATION 
A 
Toilet Tank Installation 
Figure 401 (Sheet 1) 

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747-400
MAINTENANCE MANUAL

COVER ASSEMBLY
C
Toilet Tank InstallationFigure 401 (Sheet 2)
G26313
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