Installation of the Toilet Bowl

TASK 38-31-42-400-001-A
Installation of the Toilet Bowl

WARNING: DO NOT DO WORK ON THE TOILET WASTE SYSTEM AND THE POTABLE WATER SYSTEM AT THE SAME TIME. THIS WILL PREVENT CONTAMINATION OF THE POTABLE WATER SYSTEM. SUCH CONTAMINATION CAN BE DANGEROUS TO HEALTH.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE TOILET WASTE SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (TOILET WASTE IS DANGEROUS FOR HEALTH).

NOTE: The procedure for the installation of all toilet bowls is the same.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 12-16-38-613-001-A	Servicing of the Toilet System
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 25-45-22-000-001-A	Removal of the Toilet Shroud and the Seat
TASK 25-45-22-000-802-A	Removal of the Toilet Shroud of the Space Flex Lavatory
TASK 25-45-22-400-001-A	Installation of the Toilet Shroud and the Seat
TASK 25-45-22-400-802-A	Installation of the Toilet Shroud of the Space Flex Lavatory
TASK 38-10-00-614-001-A	Pressurization of the Potable Water System from a Ground Air Supply
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
TASK 38-10-00-614-003-A	Pressurization of the Potable Water System with the Compressor
TASK 38-31-00-680-001-A	Draining of the Toilet System
TASK 38-31-00-710-009-A	Operational Test of the Toilet Unit
TASK 38-31-56-400-001-A	Installation of the Anti-Syphon Valve
TASK 38-31-66-400-801-A	Installation of the Flush Ring
Toilet Bowl ** ON A/C NOT FOR ALL
Toilet Bowl ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 38-31-42-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the toilet system is drained (Ref. AMM TASK 38-31-00-680-001).
(3) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(4) Make sure that you have access to the lavatory.
(5) Make sure that the sanitary cabinet door is open.
(6) Make sure that the potable-water shutoff valve is closed.
(7) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to open the potable-water shutoff valve.
(8) Make sure that the toilet shroud is removed (Ref. AMM TASK 25-45-22-000-001) (Ref. AMM TASK 25-45-22-000-802).

Subtask 38-31-42-865-057-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-SYS	35MG	A06
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-E	34MG	A04
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
** ON A/C ALL
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACU-GEN	33MG	A08
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-G	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-F	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-D	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04

4. Procedure
Subtask 38-31-42-420-050-B ** ON A/C NOT FOR ALL

A. Installation of the Toilet Bowl

Toilet Bowl ** ON A/C NOT FOR ALL

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Put the toilet bowl (1) in its installation position.
(4) Connect the inlet elbow (4) to the toilet bowl (1):
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Connect the inlet elbow (4).
(c) Push the cam levers (2) to the closed position.
(d) Make sure that the locking pins (3) are fully out.
(5) Install the Anti-syphon valve (Ref. AMM TASK 38-31-56-400-001).
(6) Install the flush ring (Ref. AMM TASK 38-31-66-400-801).

Subtask 38-31-42-865-058-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-SYS	35MG	A06
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-E	34MG	A04
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-D	39MG	A03
** ON A/C ALL
2001VU	VACU TOIL SYS-LAV PWR-A	32MG	A01
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-VACU-GEN	33MG	A08
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-G	34MG	A04
2001VU	VACU TOIL SYS-LAV PWR-F	39MG	A03
2001VU	VACU TOIL SYS-LAV PWR-D	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04

Subtask 38-31-42-613-050-A

C. Service the toilet system (Ref. AMM TASK 12-16-38-613-001).

Subtask 38-31-42-710-050-A

D. Operational Test
(1) Remove the WARNING NOTICE(S) related to the potable-water shutoff valve.
(2) Open the potable-water shutoff-valve.
(3) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001) (Ref. AMM TASK 38-10-00-614-003).
(4) Operate the toilet assembly and make sure that it flushes correctly (Ref. AMM TASK 38-31-00-710-009).

5. Close-up
Subtask 38-31-42-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the toilet shroud (Ref. AMM TASK 25-45-22-400-001) (Ref. AMM TASK 25-45-22-400-802).
(3) Close the sanitary cabinet door.
(4) Close the lavatory door.

Subtask 38-31-42-862-050-A

B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 01:20:28 UTC