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747-400 MAINTENANCE MANUAL
 MOTOR-PUMP-FILTER ASSEMBLY - REMOVAL/INSTALLATION
_________________________________________________
 1.  General_______
 A.  This procedure has two tasks. The first task removes the
 motor-pump-filter assembly. The second task installs the
 motor-pump-filter assembly.

 B.  The motor-pump-filter assembly is referred to as the MPF assembly in the steps of these two tasks.
 C.  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 38-32-62-004-001
 2.  Motor-Pump-Filter Assembly Removal (Fig. 401)__________________________________
 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)  Open this circuit breaker on P415 Power Distribution Panel - Right and attach a DO-NOT-CLOSE tag:
 (a)  415D35 UPR DK LAV U-21 FLUSH MOTOR
 S 864-003
 (2)  
Do the steps in AMM 12-17-61/301 to drain, rinse and add the chemical precharge to the toilet tank.

 S 864-004

 (3)  
After 5 minutes, drain the chemical precharge from the toilet tank.

 D.  AIRPLANES WITH CUTOUT ABOVE TOILET SHROUD;
 Gain Access to Motor-Pump-Filter Assembly

 S 014-034
 (1)  Open the latches at the bottom of the toilet shroud.
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747-400
MAINTENANCE MANUAL

PARTITION INSTALLATION
SEE A
TOILET FLUSH TIMER
CEILING 
PANEL  CLOSURE STRIP 
LATCHES  ASSEMBLY 
TOILET TANK 
TOILET  SEE  E 
SHROUD 
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 
Motor-Pump-Filter Installation 
Figure 401 (Sheet 1) 

G26630
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MAINTENANCE MANUAL

FLOOR MOUNT 
(2 LOCATIONS)  COVER ASSEMBLY 
C 
Motor-Pump-Filter Installation
Figure 401 (Sheet 2) 

G26643
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747-400
MAINTENANCE MANUAL

TIMER CONNECTOR

MOTOR-PUMP-FILTER ASSEMBLY

Motor-Pump-Filter Installation
Figure 401 (Sheet 3)

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G85623
　
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