(10)
 For the ground flush line for an aft lavatory, remove the access panels from the bulkhead in the aft cargo compartment.

 S 024-017

 (11)
 Remove the clamps that hold the ground flush line to the drain line and structure under the lavatory.

 S 024-018

 (12)
 Disconnect the ground flush line from the connection on the internal side of the service panel.

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737-300/400/500MAINTENANCE MANUAL
 NOTE: If the auxiliary waste tank keeps you from the access to the
____ service panel connection, remove the auxiliary waste tank (AMM 38-32-51/401).
 S 024-020
 (13)
 For the ground flush line to modular lavatories A, B, C, D, E or F, and non-modular lavatories D or E, help the ground flush line out of the lavatory and into the area below the lavatory.

 S 024-022

 (14)
 For the bottom ground flush line to non-modular lavatories A, B or C, disconnect the ground flush line from the connection under the lavatory.

 S 024-025

 (15)
 Remove the ground flush line from the airplane.

 TASK 38-32-42-404-023
 3. Toilet Ground Flush Line Installation
_____________________________________
 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

 (5)  
SOPM 20-50-12

 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 424-024
 (1)  Put the ground flush line into its approximate position under the lavatory.
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 S 424-013

 (2)  For the ground flush line to modular lavatories A, B, C, D, E or F, and non-modular lavatories D or E, do the steps that follow: (a) Help the ground flush line through the floor or crease beam. (b) Help the ground flush line through the lavatory partition.
 (3)  S 424-026For the ground flush line to non-modular lavatories A, B, or C, connect the ground flush line to the connection under the lavatory.
 (4)  S 424-025Connect the ground flush line to the internal side of the service panel.
 (5)  S 414-024Install the clamps that hold the ground flush line to the drain line and the structure under the lavatory.
 (6)  S 424-014For the modular lavatories, do the steps that follow: (a) Install the clamp that holds the ground flush line to the crease beam. (b) If the lavatory module was moved inboard, install the lavatory in its position (AMM 25-40-01/401). (c) Put the gasket and plate on the ground flush line.
 (7)  S 424-016For the non-modular lavatories D & E, put the air seal on the ground flush line.
 (8)  S 424-018For the non-modular lavatories A, B, or C, connect the top ground flush line to the connection on the lavatory floor.
 (9)  S 424-027Connect the ground flush line to the valve on the toilet tank.
 S 404-026

 (10)
 Install the clamps that hold the ground flush line in the lavatory.

 S 424-020

 (11)
 In the modular lavatories, install the gasket and plate on the lavatory partition.

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