Removal of Lavatory H

TASK 25-42-41-000-001-A
Removal of Lavatory H

WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THIS EQUIPMENT. THIS EQUIPMENT IS HEAVY (MORE THAN 12 KG (26.5 lb)) AND CAN CAUSE INJURY AND/OR DAMAGE.

ZONE: 200

1. Reason for the Job
Self Explanatory

NOTE: More than one person is necessary for this procedure.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING
No specific	1	CONTAINER 1 L (1/4 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	SCRAPER - NON METALLIC
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-24-38-680-001-A	Draining of the Potable Water System (with Electrical Power)
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-21-41-000-001-A	Removal of the Passenger Seats
TASK 25-22-41-000-001-A	Removal of the Wall-Mounted Cabin-Attendant Seats
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-47-000-004-A	Removal of the Door Frame Linings of the LH FWD Emergency Exit Door, zone 231
TASK 25-45-19-000-001-A	Removal of the Lavatory Door
TASK 25-45-22-000-001-A	Removal of the Toilet Shroud and the Seat
TASK 35-21-41-000-001-A	Removal of the Emergency Oxygen Containers
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
TASK 38-30-00-010-002-A	Removal of the Toilet Drain Lines
TASK 38-31-41-000-001-A	Removal of a Toilet Assembly
Main Electrical and Hose Connections
Potable/Waste Water Tube Connections
Upper Attachments
Lower Attachment Points
Electrical Connections (Lavatory Disassembly)
Lavatory Module Disassembly/Assembly

3. Job Set-up
Subtask 25-42-41-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 25-42-41-680-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Depressurize the potable water system (Ref. AMM TASK 38-10-00-614-002).
(2) Drain the potable water system (Ref. AMM TASK 12-24-38-680-001).
(3) Put the WARNING NOTICE(S) in position to tell persons not to do the servicing of the potable water system.

Subtask 25-42-41-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/SDCU/CHAN1	11WQ	C06
49VU	COM/CIDS/DEU A ESS/LINE 2	155RH	G05
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	79WL	H07
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R MID	166RH	M13
121VU	COM NAV/CIDS/DEU A NORM/L MID	165RH	M12
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M11
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M10
** ON A/C NOT FOR ALL
122VU	AIR COND/SDCU/CHAN2	12WQ	T18
** ON A/C NOT FOR ALL
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/CTL	5HU	U21
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY	6HU	U19
2000VU	POT WIP-HEATER-LINE	1DW	A02
2000VU	POT WIP-HEATER-CTL	2DW	A01
2000VU	LAV FWD & MID-HOT WATER-A	1MB	F02
2000VU	LAV FWD & MID-OCCUPIED	1WJ	F01
2000VU	LIGHT-LAV	1LQ	J01
2001VU	WATER SYS-QUANT-IND	1MA	B06

Subtask 25-42-41-010-050-O ** ON A/C NOT FOR ALL

D. Get Access
(1) Remove the lavatory door (Ref. AMM TASK 25-45-19-000-001).
(2) Remove the ceiling panel (Ref. AMM TASK 25-23-41-000-001).
(3) Remove the door frame lining-panels (Ref. AMM TASK 25-23-47-000-004).
(4) Remove the wall-mounted cabin attendant seat (Ref. AMM TASK 25-22-41-000-001).
(5) Remove the passenger seat adjacent to the lavatory (Ref. AMM TASK 25-21-41-000-001).
(6) In the lavatory:
(a) Remove the toilet assembly (Ref. AMM TASK 38-31-41-000-001).
(b) Remove the toilet drain line behind the lavatory (Ref. AMM TASK 38-30-00-010-002).
(c) Remove the emergency oxygen container 31WR1 (Ref. AMM TASK 35-21-41-000-001).
(d) Remove the toilet shroud (Ref. AMM TASK 25-45-22-000-001).

4. Procedure
Subtask 25-42-41-020-050-C ** ON A/C NOT FOR ALL

A. Removal of the Upper Connections

Main Electrical and Hose Connections ** ON A/C NOT FOR ALL

(1) Disconnect electrical connector 7208VC-A (11) as follows:
(a) Disconnect the electrical connector (11).
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Disconnect the air extraction hose (3) as follows:
(a) Remove the clamps (2) and disconnect the air extraction hose (3).
(b) Put the PLUG-BLANKING in each disconnected line end.

Subtask 25-42-41-020-053-G ** ON A/C NOT FOR ALL

B. Removal of the Lower Connections

Potable/Waste Water Tube Connections ** ON A/C NOT FOR ALL

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: MAKE SURE THAT THE EQUIPMENT YOU USE FOR THIS PROCEDURE IS CLEAN AND APPROVED FOR THE POTABLE WATER SYSTEM. IF NOT IT CAN CAUSE CONTAMINATION OF THE POTABLE WATER SYSTEM.

WARNING: BEFORE YOU DO WORK ON THE POTABLE WATER SYSTEM, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION. (CONTAMINATION FROM TOILET WASTE IS DANGEROUS TO HEALTH).

(1) Put a CONTAINER 1 L (1/4 USGAL) in position below the water connections that you will disconnect.
(2) If necessary, push up the insulation (3).
(3) Disconnect the potable water connections:
(a) Remove the nut (5), the washer (6) and disconnect the bonding straps (4).
(b) Loosen the nut (1) and disconnect the potable water tube (2) from the fitting (7).
(c) Loosen the nuts (1) and remove the potable water hose (8).
(d) Put the PLUG-BLANKING in each disconnected line end.
(4) Disconnect the waste-water drain connection:

CAUTION: MAKE MATCH MARK ON THE WASTE WATER AND AIR OUTLET HOSES AND ON THEIR RELATED CONNECTIONS. IF YOU CONNECT ONE OF THESE HOSES TO THE CONNECTION OF THE OTHER HOSE, YOU CAN CAUSE DAMAGE TO EQUIPMENT.

(a) Remove the bolt (10), the washer(s) (11), the nut (13) and the clamp (12).
(b) Loosen the clamps (14) and (16) and disconnect sleeve (15) from the drain tube (9).
(c) Put the PLUG-BLANKING in each disconnected line end.

Subtask 25-42-41-020-054-A ** ON A/C NOT FOR ALL

C. Removal of the Upper Attachments

Upper Attachments ** ON A/C NOT FOR ALL

(1) Remove the access panel (1).

NOTE: Ball catches hold the access panel in position.

(2) Remove the quick release pins (2) and the tie-rod assembly (4).

Subtask 25-42-41-020-055-C ** ON A/C NOT FOR ALL

D. Removal of the Lower Attachments and the Lavatory Module

Lower Attachment Points ** ON A/C NOT FOR ALL

(1) Make match marks on the components that you disconnect/remove to record their connections/positions. This is important for the subsequent installation procedure.
(2) Remove the screws (10) and the door sill (9).
(3) Remove the lavatory module as follows:
(a) Remove the covers (4).
(b) Remove the bolts (8), washers (7) and bushes (6) and (5).
(c) Carefully lift the lavatory module away from the seat track fittings (3).
(d) Remove the screws (1), stop washers (2) and seat track fittings (3).

Subtask 25-42-41-020-056-B ** ON A/C NOT FOR ALL

E. Disassembly of the Lavatory Module
(1) Disconnect the electrical connections:

Electrical Connections (Lavatory Disassembly) ** ON A/C NOT FOR ALL

(a) Open the sanitary-cabinet access door (3).
(b) Disconnect the electrical connector (4).
(c) Remove and discard the cable ties (15) from the mounts (14).
(d) Remove and discard the cable ties (13) from the cable assemblies (12) and (8), if necessary.
(e) Remove the screws (6), the washers (7) and the bracket (5).
(f) Disconnect the electrical connectors from the flush switch (2).
(g) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(h) Remove and discard the cable ties (10) from the mounts (11).
(i) Temporarily attach the cable assembly (9) to the top of the ceiling panel (1).
(j) Close the sanitary-cabinet access door (3).
(2) Disconnect the lavatory ventilation hose:

Main Electrical and Hose Connections ** ON A/C NOT FOR ALL

(a) Loosen the clamp (8) and disconnect the ventilation hose (10).
(b) Loosen the clamp (8) and disconnect the ventilation hose (4).
(c) Remove the screw (6), the washer (7), the spacer (12) and the clamp (5).
(d) Put the PLUG-BLANKING in each disconnected line end.
(3) Disassemble the lavatory module:

Lavatory Module Disassembly/Assembly ** ON A/C NOT FOR ALL

(a) Remove the sealant from around the floor pan assembly (7).
(b) Remove the screws (3) and the washers (4).
(c) Remove the screws (6) and the washers (5).
(d) Lift and remove the lavatory assemblies (1) and (2) from the floor pan assembly (7).
(e) Remove the screws (14), (18) and (20) and the washers (17) and (19).
(f) Remove the screw (21).
(g) Remove the screws (15) and the washers (16).
(h) Remove the lavatory assemblies (1) and (2) from the aircraft.
(i) If installed, remove the screws (8) from the floor angle brackets (9).
(j) If installed, remove the rubber strips (10), (12) and (13) from the floor panel (11).
(k) Remove the floor pan assembly (7).
(l) Remove the floor panel (11).
(m) Remove the sealant (MAT. NO. 09-016) from around the floor pan assembly (7) with a SCRAPER - NON METALLIC.
(n) Put the safety barriers in position.

[Rev.10 from 2021] 2026.04.01 05:55:34 UTC