(10)
 Make sure that the drain valve operates correctly.

 S 714-127
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737-300/400/500MAINTENANCE MANUAL
 S 414-031
 (11)
 Install the shroud(s) and or the access panels as necessary.

 S 414-032

 (12)
 Install the outflow valve if it is necessary (AMM 21-31-11/401).

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737-300/400/500MAINTENANCE MANUAL
 TOILET GROUND FLUSH LINE - REMOVAL/INSTALLATION
_______________________________________________
 1.  General
 A.  This procedure gives the data to remove and install the ground flush line for the toilet waste tanks.
 B.  The ground flush lines for the modular lavatories have a routing that begin at the service panel and follow the drain line to the area below the lavatory. The ground flush lines go through a hole in the crease beam just outboard of the lavatory and come into the lavatory through the outboard partition.
 C.  The toilet flush lines for the non-modular lavatories A, B, and C have two pieces, the top and the bottom pieces. The botton piece is connected at the service panel and the connection (union) under the lavatory. The top piece is connected to the bottom piece at the connection in the lavatory floor and then connected to the toilet tank. If only the top or bottom piece is damaged, it is not necessary to replace the remaining piece.
 TASK 38-32-42-004-001
 2.  Toilet Ground Flush Line Removal________________________________
 A.  References
 (1)
AMM 12-17-00/301, Toilet Servicing

 (2)
AMM 12-31-11/201, Body Section 41 Access Doors and Panels

 (3)
AMM 25-40-01/401, Modular Lavatory Compartment

 (4)
AMM 38-32-51/401, Toilet Waste Tank

 B.  Access
 (1)  Location Zones
 103 Forward Lavatory A
 113 Aft Left Lavatory B
 114 Aft Right Lavatory C
 118 Aft Left Lavatory D
 109 Aft Right Lavatory E

 NOTE: Not all lavatories are installed on each airplane.
____
 C.  Procedure
 S 684-002
 (1)
Drain the toilet tank (AMM 12-17-00/301).

 (2)
Remove the fasteners and remove the toilet shroud.

 (3)
Disconnect the ground flush line from the toilet tank.

 S 014-003
 S 024-004
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A 737-300/400/500MAINTENANCE MANUAL
 S 024-005
 (4)  Remove the clamps that hold the ground flush line in the lavatory compartment.
 S 024-007
 (5)  For the modular lavatories, do these steps to remove the clamp that is just aboard of the lavatory. (a) For lavatories A, C, D, E or F, move the lavatory module inboard approximately 6 inches (AMM 25-40-01/401) (b) For lavatory B, remove the fasteners and the attendant's panel at the lower outboard corner of the forward partition. (c) Remove the clamp that holds the ground flush line to the crease beam.
 S 024-011
 (6)  In the non-modular lavatories A, B or C, do these steps: (a) Disconnect the top ground flush from the connection on the lavatory floor. (b) Remove the top ground flush line.
 S 024-012
 (7)  In the modular lavatories, remove the plate and gasket that holds the ground flush line as it passes through the lavatory partition.
 S 024-013
 (8)  For the non-modular lavatories D or E, remove the air seal that holds the ground flush line as it passes through the fire shroud.
　
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