S 394-037

 (5)  
Apply a wet seal with sealant, BAC 5010, Type 60 to the bolts (39).

 S 424-038

 (6)  
Install the bolts (39), washers (40), coutersunk washers (43), and nuts (42).

 S 424-039

 (7)  
Install the cap assembly (34) and clamp (38) on the aft drain bladder assy (35).

 S 384-040

 (8)  
Put the plate assembly (36) in its position.

 S 424-041

 (9)  
Install the screws (31) and washers (32) to attach the plate assembly (36) to thestructure.

 S 424-042

 (10)
 Install the clamp (37) and the hose to the outlet of the aft drain bladder assy (35).

 S 424-043

 (11)
 Install the clamp (33) and the drain line to the inlet of the aft drain bladder assy (35).

 E. Aft Sill Drain Bladder Assembly Installation Test
 S 794-044
 (1)  
Pour water into the aft sill drain.

 S 794-048

 (2)  
Make sure the water flows to the aft sill drain bladder assembly without leakage.

 F. Put the Airplane Back to Its Usual Condition
 S 414-049
 (1)  Do this task: Entry and Service Area Floor Covering Installation (AMM 25-27-21/401).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES POST-SB 54-1192 ú

 38-31-31
 AIRPLANES POST-PRR 35363  ú ú 01 Page 409 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 1.

2.

3.

4.

5.

A
737-300/400/500MAINTENANCE MANUAL
 TOILET SYSTEM - DESCRIPTION AND OPERATION
_________________________________________
General
_______
 A.  Separate independent toilet systems are provided in the forward lavatory compartment and the aft lavatory compartment (Fig. 1 and 2). The toilet flushing unit is electrically operated. The waste material collects in a waste tank. The unit uses filtered waste liquid as the flushing liquid. The primary flushing liquid is a strong solution of disinfectant, deodorant, dye, and water.
 B.  The toilet unit is installed in each lavatory compartment entirely above the lavatory compartment floor. Each unit consists of a toilet shroud assembly, flushing components and a waste tank. On some airplanes, the waste storage capacity of the aft toilets is increased by the installation of the auxiliary waste tank.
 C.  Servicing components in the toilet systems allow ground draining and rinsing of the toilet units.
 D.  Turn the toilet flush handle to initiate the toilet flush procedure. The flushing liquid flows through a filter to the flush ring in the toilet bowl. The waste material and the flushing liquid flow out the bottom of the bowl to the waste tank.
 E.  A separator between the tank and the bowl prevents splash and vision of tank contents. Should mechanical or power failure occur, the toilet can be operated as a conventional static unit.
Toilet Tank Shroud Assemblies (Figs. 1 and 2)
_____________________________
 A.  Each toilet tank shroud assembly consists of a standard commercial seat and cover attached to a shroud which covers the flushing components mounted on the tank top. The tank shroud is attached to the upper and lower ends of the tank shroud support angles.
Toilet Flushing Components (Figs. 1 and 2)
__________________________
 A.  The flushing components include a flush handle, timer, flush motor and the required tubing. The flush motor and tubing are on the tank top. The flush handle and timer are on the toilet back shroud located above the toilet unit.
Toilet Flush Handle (Figs. 1 and 2)
___________________
 A. The flush handle is rotated to start the timer for the flushing cycle.Toilet Timer (Fig. 1 and 2)
____________
 A.  The timer is mounted behind the flush handle. Rotating the flush handle 15 degrees provides power to the flush motor for 10 |2 seconds.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 38-32-00
 ALL  ú ú 08 Page 1 ú Mar 15/95
　
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