Installation of the Liquid Level Sensor

TASK 38-31-63-400-002-A
Installation of the Liquid Level Sensor

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).

FIN: 41MG

1. Reason for the Job
This is an alternative task to 383163 400 00100 but Airbus recommends to do the task 383163 400 00100 which includes the leak test.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 0.11 and 0.079 m.daN (9.73 and 6.99 lbf.in )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
161DW, 162DW

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
4	O-RING	AIPC 38-31-04-34-080
4	O-RING	AIPC 38-31-84-44-070

D. 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 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR65
TASK 38-31-00-680-001-A	Draining of the Toilet System
TASK 38-31-00-720-002-A	Functional Test of the Liquid Level Sensor and Transmitter
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Liquid Level Sensor 41MG ** ON A/C NOT FOR ALL
Liquid Level Sensor 41MG ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 38-31-63-860-051-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized from the external power (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).

Subtask 38-31-63-865-065-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-L	23MG	A05
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04

4. Procedure
Subtask 38-31-63-420-051-A ** ON A/C NOT FOR ALL

A. Installation of the liquid Level Sensor 41MG
(1) Put the new AIPC 38-31-04-34-080 O-RING (4) or AIPC 38-31-84-44-070 O-RING (4) in position.
(2) Put the liquid level sensor 41MG (3) in position.
(3) Make sure that the location pin is at the top.
(4) Install the washers (5) and the nuts (6).
(5) TORQUE the nuts (6) to between 0.11 and 0.079 m.daN (9.73 and 6.99 lbf.in )

.
(6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Connect the electrical connector 41MG-A (2).

Subtask 38-31-63-420-051-C ** ON A/C NOT FOR ALL

A. Installation of the liquid Level Sensor 41MG
(1) Put the new AIPC 38-31-04-34-080 O-RING (4) or AIPC 38-31-84-44-070 O-RING (4) in its installation position.
(2) Put the liquid level sensor 41MG (3) in its installation position.
(3) Make sure that the location pin is at the top.
(4) Install the washers (5) and the screws (6).
(5) TORQUE the screws (6) to between 0.11 and 0.079 m.daN (9.73 and 6.99 lbf.in )

.
(6) Remove the blanking cap and connect the electrical connector 41MG-A (2).

Subtask 38-31-63-865-066-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-L	23MG	A05
** ON A/C NOT FOR ALL
2001VU	VACU TOIL SYS-LAV PWR-M	34MG	A04

Subtask 38-31-63-720-051-A

C. Do the functional test of the liquid level sensor 41MG and transmitter 40MG (Ref. AMM TASK 38-31-00-720-002).

5. Close-up
Subtask 38-31-63-613-051-A

A. Do the servicing of the waste holding tank (Ref. AMM TASK 12-16-38-613-001).

Subtask 38-31-63-410-052-C

B. Close Access
(1) Install the insulation around the liquid level sensor.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close access panels 161DW 162DW (Ref. AMM TASK 25-55-12-400-001).
(4) Remove the access platform(s).
(5) Close the AFT cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).

Subtask 38-31-63-862-051-A

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

[Rev.10 from 2021] 2026.04.01 01:20:44 UTC