Removal of the Washbasin Drain Valve

TASK 38-32-42-000-002-A
Removal of the Washbasin Drain Valve

NOTE: The removal of a drain valve in a lavatory is given. The procedure is the same for all the lavatories.

ZONE: 260

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ALLEN KEY 1 INCH
No specific	1	CONTAINER 1 L (1/4 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
260	AFT CABIN UTILITY AREA

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 38-30-00-510-001-A	Decontamination of Components of the Waste/Water and Toilet System for Shipping and/or Installation
Shutoff Valve ** ON A/C NOT FOR ALL
Shutoff Valve ** ON A/C NOT FOR ALL
Washbasin Drain Valve ** ON A/C NOT FOR ALL
Washbasin Drain Valve ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 38-32-42-861-051-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 38-32-42-865-059-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	LAV FWD & MID-HOT WATER-A	1MB	F02
** ON A/C NOT FOR ALL
2000VU	LAV FWD-HOT WATER-A	1MB	F02
** ON A/C NOT FOR ALL
2001VU	LAVATORY AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-E	9MB	B03
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-G	9MB	B03
2001VU	LAV AFT-HOT WATER-D/F	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER	9MB	B03
2001VU	LAV AFT-HOT WATER	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-E/L	9MB	B03
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-L	9MB	C04
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-D/L	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAV AFT-HOT WATER-M	9MB	B03

Subtask 38-32-42-010-054-C ** ON A/C NOT FOR ALL

C. Get Access

Shutoff Valve ** ON A/C NOT FOR ALL

(1) Open the door of the related lavatory.
(2) Open the sanitary cabinet door.
(3) Close the potable-water shutoff valve (30).
(4) Put the CONTAINER 1 L (1/4 USGAL) below the washbasin to collect unwanted water.

Subtask 38-32-42-010-054-H ** ON A/C NOT FOR ALL

C. Get Access

Shutoff Valve ** ON A/C NOT FOR ALL

(1) Open the related lavatory door.
(2) Open the sanitary cabinet door.
(3) For the standard lavatory:
(a) Turn the control handle (2) to close the potable-water shutoff valve (1).
(4) For the space flex lavatory:
(a) Turn the control handle (4) to close the potable-water shutoff valve (3).
(5) For the smart lavatory:
(a) Turn the control handle (6) to close the potable-water shutoff valve (5).
(6) Put a CONTAINER 1 L (1/4 USGAL) below the washbasin to collect the unwanted material.

4. Procedure
Subtask 38-32-42-020-051-F ** ON A/C NOT FOR ALL

A. Removal of the Drain valve in the Washbasin

Washbasin Drain Valve ** ON A/C NOT FOR ALL

(1) Remove the clamps (12).
(2) Remove the hoses (13) and (11).
(3) Put an identification mark on the valve body (5) and the washbasin for the correct installation position.
(4) Remove the plug (1).
(5) Remove the locknut (10) and the nut (9).
(6) Remove the washer (8) and the spacer (7).
(7) Remove and discard the O-ring (6).
(8) Remove the bolt (2).
(9) Remove the collar (3).
(10) Remove the valve body (5) from the washbasin.
(11) Remove and discard the packing (4).
(12) If you will use the removed parts again, clean and disinfect them (Ref. AMM TASK 38-30-00-510-001).

Subtask 38-32-42-020-051-G ** ON A/C NOT FOR ALL

A. Removal of the Washbasin Drain Valve

Washbasin Drain Valve ** ON A/C NOT FOR ALL

(1) Make the match marks on the components that you disconnect/remove to record their connection/position.

NOTE: This is important for the subsequent installation procedure.

(2) Remove the clamp (9).
(3) Disconnect the hose (8) from the drain housing (7).
(4) Put the PLUG-BLANKING in each disconnected line end.
(5) Remove the stopper (10), if installed.
(6) Remove the sieve (1) from the flange (4).
(7) Remove and discard the packing (2).
(8) Remove the filter assembly (3).
(9) Hold the drain housing (7) and use an ALLEN KEY 1 INCH to remove the flange (4) from the drain housing (7).
(10) Remove the drain housing (7) and discard the gasket (6).
(11) If you use the removed parts again, use disinfectant to clean them (Ref. AMM TASK 38-30-00-510-001).

[Rev.10 from 2021] 2026.04.02 06:25:58 UTC