(a) Turn the lavatory drain valve to the OFF position.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

Washbasin Faucet Assembly
Figure 201 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A61629
A 737-300/400/500MAINTENANCE MANUAL
ADJUSTING SCREW 
(2 LOCATIONS) 
SHOULDER SCREW 
(2 LOCATIONS) 
O-RINGS 
CARTRIDGE 
VALVE 
ASSEMBLIES 
DRAIN BUTTON
DECORATIVE COVER 

Washbasin Faucet Assembly
Figure 201 (Sheet 2)

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 LAVATORIES  ú
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A53008
A
737-300/400/500MAINTENANCE MANUAL
 (b)  
Remove the decorative cover. Remove the attach screw and the reducer found on the bottom of the decorative cover.

 (c)  
Remove the shoulder screw and move the push button assembly from the faucet.

 (d)  
Put an applicable wrench on the valve to remove the cartridge valve from the faucet.

 (e)  
Examine the cartridge valve and replace the O ring if required.

 NOTE: If the cartridge valve surface that seals is not
____ smooth or is damaged replace the cartridge valve.
 S 402-037
 (3)  AIRPLANES WITH WEBER LAVATORY FAUCETS; Do these steps to install the cartridge:
 (a)  
Install the cartridge valve in the body assembly, and tighten with a wrench.

 (b)  
Lower the faucet handle to the usual position.

 S 402-040
 (4)  AIRPLANES WITH RUMBOLD OR YRC LAVATORY FAUCETS; Do these steps to install the cartridge:
 (a)  
Install the cartridge valve in the faucet body assembly and tighten with a wrench.

 (b)  
Install the push button assembly and install the shoulder screw through the push button assembly to the faucet body.

 NOTE: Be sure to install the compression spring between
____ the faucet body and the push button assembly.
 (c)  
Install the decorative cover.

 (d)  
Turn the lavatory drain valve to the ON position.

 (e)  
Make sure the water flows correctly from the faucet.

 (f)  
Examine for water leakage from the faucet.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
 TASK 38-11-81-822-032
 3. Faucet Water Flow Time Adjustment - Rumbold or YRC Lavatories
_____________________________________________________________
 A. Access
 (1)  Location Zones
 103 Forward Lavatory
 113/114 Aft Lavatory
 118 Lavatory (if installed)

 B. Procedure to Adjust the Water Flow Time
 S 032-027
 (1)  
Remove the decorative cover. Remove the attach screw and the reducer found on the bottom of the faucet cover.
　
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