(3)  
For operators with more than one lavatory installed in the forward toilet system, the inspection procedure is the same and is to be repeated on each additional lavatory installation.

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 B.

C.
D.
E.
A
737-300/400/500MAINTENANCE MANUAL
References
 (1)
AMM 12-17-00/301, Toilet Servicing

 (2)
AMM 12-40-00/201, Cleaning and Washing

 (3)
AMM 20-30-51/201, Miscellaneous Materials

 (4)
AMM 38-32-00/501, Toilet System

 (5)
AMM 38-32-00/701, Toilet System - Cleaning/Painting

 (6)
AMM 38-32-21/401, Toilet Flush Motor-Pump-Filter Assembly

 (7)
AMM 38-32-22/701, Toilet Filter

 (8)
AMM 38-32-31/401, Toilet Drain Valve

 (9)
AMM 38-32-41/401, Toilet Drain-Valve Control-Cable

 (10)
 AMM 38-32-51/401, Toilet Waste Tank

 (11)
 AMM 38-32-91/401, Forward-Lavatory Waste-Drain Ball-Valve

 (12)
 AMM 51-31-00/201, Seals and Sealing

 (13)
 AMM 52-48-41/001, Electronic-Equipment Compartment DoorEquipment

 (1)
Maintenance StandConsumable Materials

 (1)
Brush, Drain, extendible (4 inch) - Commercially available

 (2)
Brush, soft bristle - Commercially available

 (3)
G01043 Cloth, lint free

 (4)
G00027 Cheesecloth

 (5)
B00051 Disinfectant - Deodorizer Lysol

 (6)
G00000 Gloves - Disposable

 (7)
G00000 Shop Coat - Disposable

 (8)
G00000 Mask, face - Disposable

 (9)
G01915 Glasses - SafetyAccess

 (1)  
Location Zones 103 Forward Lavatory (A) 205 Electronic Equipment Compartment

 (2)  
Access Panels 1104 Forward Toilet Service-Panel 1201 Electronic-Equipment Compartment Door

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A
737-300/400/500MAINTENANCE MANUAL
 F. Procedure
 S 672-050
 (1)  
If there is a bad localized smell in the airplane, fully ventilate the area and try to stop the spread of contamination.

 S 012-005

 (2)  
Open the electronic-equipment compartment door for access
 (AMM 52-48-41/501) .

 S 012-006

 (3)  
Open the forward toilet service-panel.

 S 942-007

 (4)  
Position the maintenance stand under the electronic equipment compartment and install a strong light source inside the compartment.

 S 862-008

 (5)
Open and tag the applicable lavatory flush motor circuit breaker.

 S 682-051

 (6)  
Connect the service cart to the forward toilet service-panel and do the procedure to drain the toilet system. (AMM 12-17-00/301).

 NOTE:____Try to drain the system, only. Do not complete a full service of the toilet system.
 (a)  On the forward toilet service-panel do the applicable step that follows: 1) Make sure the drain plug is removed, on the service panels
 without levers for the flapper valve. 2) Make sure the OPEN lever is set so the flapper valve is open, on service panels with OPEN/CLOSE levers. 3) Make sure the PUSH-TO-OPEN lever is set so the flapper valve is open, on service panels with PUSH-TO -OPEN levers.
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