3.  Toilet Tank Cleaning
A.  General
(1)  The recommended method to clean the toilet tank is to rinse the tank for one to two minutes each time the waste tank is drained during servicing. A regular rinse of the toilet tank will keep the unscheduled maintenance to a minimum.
B.  Consumable Materials
(1)  
B00051 Disinfectant - Deodorizer Lysol Spray and Concentrated Deodorizer Lysol

(2)  
B00000 Honey Bee 76, MC Gean-Rohco, Downey, CA

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C.  Reference
(1)  AMM 12-17-0, Toilet Servicing
D.  Access
(1) 
 Location Zones
100 Upper Half of Fuselage
200 Lower Half of Fuselage

(2) 
 Access Panels
1104 Forward Toilet Panel
1502 Toilet Service Door

E.  Prepare to Clean the Toilet Tank
(1)  
Drain and flush the toilet tank (AMM 12-17-0).

(2)  
Allow the toilet tank to drain fully.

NOTE:  Do not add the precharge for the toilet tank.

(3)  
Push the drain valve handle to close the drain valve.

(4)  
Remove the toilet shroud.

(5)  
Use a vacuum cleaner to remove loose dirt from the lavatory.

NOTE:  Make sure you clean the toilet tank vent, water separator, the inner part of the muffler (for the sink drain), and the bowl vent inlet if it is necessary.
F.  Clean the Toilet Tank (Internal Surfaces) and Bowl.
(1)  
Fill the toilet tank to 5 inches below top of toilet bowl with a mixture of water and liquid Lysol-type products (Optional Honey Bee 76 or per Manufacturer's Recommendation).

(2)  
Let the liquid stand overnight or longer.

(3)  
Activate flush motor several times each hour while the mixture is in the toilet tank.

(4)  
Use the mixture and a soft-bristle brush to clean the toilet bowl separator, ring, and baffle.

G.  Clean the Areas on and Adjacent to the Toilet Tank.
(1)  
Remove the lint from the gap between the toilet bowl and shroud.

(2)  
Use an approved disinfectant spray, a soft bristle brush and/or shop rag to clean these parts:

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CAUTION:  USE ONLY APPROVED MATERIALS ON THE FLOOR PAN, LIGHT LENSES, GASPER AIR FIXTURE, MUFFLER, TOILET TANK VENT, WATER SEPARATOR, HOSES, AND ELECTRICAL WIRES. OTHER MATERIALS CAN CAUSE DAMAGE TO THESE PARTS.
(a)  
The top and side surfaces of the toilet tank.

(b)  
The external surfaces of the toilet bowl, flush motor and drain valve.

(c)  
The toilet tank vent.

(d)  
The toilet bowl vent.

(e)  
The supports for the toilet shroud.

(f)  
All cracks and corners of the walls and floor.

(g)  
The floor pan.

(h)  
The light lenses.

(i)  
The gasper air fixture.

(j) 
 The muffler.

(k)  
The water separator.

(3)  
Remove the toilet shroud from the airplane and clean it with a soft bristle brush and disinfectant spray.

(4)  
Install the toilet shroud.

(5)  
Do the steps to service the toilet tank (AMM 12-17-0).

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TOILET TIMER - REMOVAL/INSTALLATION
1.  Remove Toilet Timer (Fig. 401)
A.  Open applicable LAV FLUSH MOTOR circuit breaker on panel P18.
B.  Obtain access to timer.
(1)  
In forward lavatory, remove fasteners and remove access panel below timer handle.

(2)  
In aft lavatory, remove screws and disengage toilet back shroud from spring clip. Remove shroud enough to access electrical connectors.

C.  Disconnect electrical connectors from timer.
D.  Remove timer handle attachment screw and remove handle.
E.  Remove timer mounting nuts (4 places).
F.  Remove timer.
2.  Install Toilet Timer (Fig. 401)
A.  Position timer on timer panel.
B.  Install timer mounting nuts.
C.  Position timer handle on timer shaft and install handle attachment screw.
D.  Connect electrical connectors.
E.  Replace access panel or toilet back shroud.
(1)  
In forward lavatory, replace access panel and fasteners.
　
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