S 216-031
 (26) At the forward toilet service-panel, do a full visual inspection of the drain valve assembly.
 (a)  If you find a leak on the drain valve assembly, do the corrective maintenance (AMM 38-32-81/201 and AMM 38-32-81/401).
 S 866-032
 (27)
 Remove the tag and close the applicable lavatory flush motor circuit breaker.

 S 616-033

 (28)
 Do the forward toilet servicing-procedure (AMM 12-17-00/301).

 S 946-034

 (29)
 Remove all tools and equipment from the work area.

 S 416-035

 (30)
 Close the forward toilet service-panel.

 (31)
 Close the electronic-equipment compartment door (AMM 52-48-41/501).

 S 416-036
 TASK 38-32-00-206-037
 3.  Toilet System Conditional Inspection (Aft Toilet)_________________________________________________
 A. General
 (1)  
This inspection procedure is to be done when a check on the aft-toilet waste system is necessary.

 (2)  
The inspection procedure shows a toilet system with one aft lavatory installed.

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 B.

C.
D.
E.
F.
A
737-300/400/500MAINTENANCE MANUAL
 (3)  
For operators with more than one lavatory installed in the aft toilet system, the inspection procedure is the same and is to be repeated on each additional lavatory installation.

References

 (1)  
AMM 12-17-00/301, Toilet Servicing

 (2)  
AMM 38-32-00/501, Toilet System

 (3)  
AMM 38-32-21/401, Toilet Flush Motor-Pump-Filter Assembly

 (4)  
AMM 38-32-31/401, Toilet Drain Valve

 (5)  
AMM 38-32-41/401, Toilet Drain Valve Control Cable

 (6)  
AMM 38-32-42/401, Toilet Ground Flush Line

 (7)  
AMM 38-32-51/401, Toilet Waste Tank

 (8)  
AMM 38-32-81/201, Service Panel Drain Valve

 (9)  
AMM 38-32-81/401, Waste Tank Drain Duct Nipple

 (10)
 AMM 51-31-00/201, Seals and SealingEquipment

 (1)
Maintenance StandConsumable Materials

 (1)  
G00000 Gloves - Disposable

 (2)  
G00000 Shop Coat - Disposable

 (3)  
G00000 Mask, face - Disposable

 (4)
G01915 Glasses - SafetyAccess

 (1)  
Location Zones 109 Aft Lavatory (E) 113 Aft Lavatory (B) 114 Aft Lavatory (C) 118 Aft Lavatory (D) 218 Aft Cargo Compartment 220 Aft Cargo-Compartment Equipment-Bay

 (2)  
Access Panels 1502 Aft Toilet Service Panel 4504 Aft Cargo-Compartment Door

Procedure
 S 016-038
 (1)  
Open the aft toilet service-panel.

 (2)  
Open the aft cargo-compartment door for access (AMM 52-31-00/001).

 S 016-039
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A 737-300/400/500MAINTENANCE MANUAL
 S 016-040
 (3)  Remove the access panel from the rear bulkhead of the aft cargo compartment.
 S 866-041
 (4)  Open and tag the applicable lavatory-flush-motor circuit breaker.
 S 686-043
 (5)  Do the servicing procedure for the toilet tank and auxiliary waste tank, and drain the aft-toilet system (AMM 12-17-00/301).
 NOTE:____ It is only necessary to drain the system, do not complete the full service procedure.
 S 966-044
 (6)  At the aft toilet service-panel, do the steps that follow: (a) Release and close the toilet-tank drain valve handle. (for example: R.H. AFT TOILET)
 NOTE:____ Let the handle move suddenly to the closed position to make sure that the drain valve in the toilet tank gives a good seal (closed).
 (b)  Release and close the auxiliary-tank drain-valve handle. (AUX TOILET TANK DRAIN AND FLUSH ONLY)
　
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