(2)
Slide filter basket down and away from pump.
(3)
Find spacer in filter basket and stow for reinstallation.
F. On motor-pump-filter assemblies with rotating filter,
(1)
Remove retainer attaching screws and washers. Remove retainer.
(2)
Remove wiper blade attaching screws and washers. Remove wiper blade.
(3)
Remove filter basket. Remove and discard teflon seal.
4. Clean Toilet Filter
A. Steam clean inside the filter basket by directing steam through the discharge tube and filter screen.
B. Dry all surfaces with dry, compressed air.
565
Oct 20/86 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 38-32-22 Page 701
F92322
Toilet Motor-Pump Filter System 565
38-32-22 Figure 701 Feb 20/85
Page 702
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
5. Restore Airplane to Normal Configuration
A. On motor-filter-pump assemblies with fixed filter.
(1)
Place spacer on stud at bottom of pump housing.
(2)
Slide filter in place and fasten washer and nut.
(3)
Install motor-pump-filter assembly (Ref 38-32-21).
B. On motor-pump-filter assemblies with rotating filter,
(1)
Lubricate seal groove and teeth of filter basket with grease.
(2)
Place new teflon seal in groove of filter basket and install filter basket until it meshes with pinion.
(3)
Holding filter basket in place, install wiper blade, retainer, attaching screws and washers. Torque all screws from 3 to 5 inch-pounds.
C. Install motor-pump-filter assembly (Ref 38-32-21).
565
Oct 20/86 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 38-32-22 Page 703
TOILET DRAIN VALVE - REMOVAL/INSTALLATION
1. Remove Toilet Drain Valve (Fig. 401)
A. Drain and flush toilet waste tank (Ref 12-17-0).
B. Remove four toilet shroud attachment screws and remove shroud.
C. Disengage drain valve control cable at cable quick-disconnect.
D. Loosen drain valve mounting nuts, press down on top of the drain valve then remove mounting nuts and washers (8 places).
E. Remove drain valve and gasket.
CAUTION: WEAR GLOVES AND PROTECTIVE SLEEVES WHEN WORKING WITH PARTS INSIDE THE TANK.
2. Install Toilet Drain Valve (Fig. 401)
A. Clean drain valve seat.
NOTE: Ensure valve seat is smooth, free of debris and no scratches, dents, abrasions or other evidence of damage.
B. Place new gasket over mounting studs.
C. Place drain valve on toilet waste tank so control cable is in the engage position.
NOTE: Ensure flexible boot is free of breaks or holes and drain valve is installed spring loaded toward the close position.
D. Install mounting nuts and washers. Torque to 40-50 pound-inches.
E. Engage control cable at cable quick-disconnect.
NOTE: With drain valve closed check that there is a 1/2-inch cable movement, with a cable load of approximately 5 pounds, before the valve starts to open.
F. Service toilet waste tank (Ref 12-17-0).
G. Check drain valve for leakage and for proper operation.
H. Install toilet shroud.
Aug 15/80 38-32-31 Page 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
F92780
Toilet Drain Valve Installation 527
38-32-31Page 402 Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 15/72
TOILET DRAIN VALVE - INSPECTION/CHECK
1. Toilet Drain Valve Inspection
A. General
(1)
The toilet drain valve provides a positive seal within the toilet tank against varying atmospheric pressures during all altitude conditions. Should fluid leak through, a drain cap located in the service panel holds the fluid within the drain tube and prevents it from draining overboard. The drain cap seal should be checked when the cap is removed to ensure that the sealing capability is maintained.
(2)
In some airplanes a floor drain fitting is provided in the lavatory compartment to drain moisture condensation and seepage from the lavatory area to the toilet drain tube. Fluid in the toilet drain tube therefore, does not necessarily mean that the toilet drain valve is leaking. Before removing the drain valve because of leakage it should be determined that the fluid actually came from the toilet tank. Refer to 38-31-0, Waste Water System, for effectivity of the lavatory floor drain.
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