Installation of Lavatory H (Design Lav. M)

TASK 25-43-44-400-003-A
Installation of Lavatory H (Design Lav. M)

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.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 200
FIN: 5054MM42 ** ON A/C NOT FOR ALL

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	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 5.9 and 5.4 m.daN (43.51 and 39.82 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03FBB1)	Mineral Oil base Grease-General Purpose Medium Temp. -
(Material No.03GBB1)	Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.12ACB1)	Corrosion Preventive Compound-Heavy Duty Hard Film -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-24-38-680-001-A	Draining of the Potable Water System (with Electrical Power)
TASK 12-33-21-618-001-A	Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Available)
TASK 12-33-21-618-001-A-01	Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02	Pre-conditioning with the APU
TASK 12-33-21-618-001-A-03	Pre-conditioning through the LP Ground Connection (Aircraft Electrical Power Not Available)
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 21-21-00-710-002-A	Operational Test of the Individual Air Outlet
TASK 21-23-00-720-002-A	Functional Test of an Air Extraction Point
TASK 23-73-00-710-022-A	Operational Test of the Passenger Address (PA) system
TASK 23-73-00-710-024-A	Operational Test of the Passenger Call System
TASK 23-73-00-740-005-B	Interface and Power-Up Test of the Cabin Intercommunication Data System (CIDS) through the CFDS
TASK 23-73-00-862-001-A	De-energize the Cabin Intercommunication Data System (CIDS)
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 25-20-00-350-003-A	Repair of the Non-Textile Floor Covering (NTF)
TASK 25-21-41-000-001-A	Removal of the Passenger Seats
TASK 25-21-41-400-001-A	Installation of the Passenger Seats
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
TASK 25-23-41-400-001-A	Installation of the Ceiling Panels
TASK 25-23-43-000-001-A	Removal of the Upper Sidewall Panel
TASK 25-23-43-400-001-A	Installation of the Upper Sidewall Panel
TASK 25-23-44-000-001-A	Removal of the Lower Sidewall Panels (Dado Panels)
TASK 25-23-44-400-001-A	Installation of the Lower Sidewall Panels (Dado Panels)
TASK 25-23-48-000-001-A	Removal of the Cove Light Panel
TASK 25-23-48-400-001-A	Installation of the Cove Light Panel
TASK 25-28-42-000-001-A	Removal of the Non-Textile Floor Covering (NTF)
TASK 25-28-42-400-001-A	Installation of the Non-Textile Floor Covering (NTF)
TASK 25-33-42-000-001-A	Removal of the Aft Galley Unit
TASK 25-33-42-400-001-A	Installation of the Aft Galley Unit
TASK 25-45-19-000-001-A	Removal of the Lavatory Door
TASK 25-45-19-400-001-A	Installation of the Lavatory Door
TASK 25-45-22-000-001-A	Removal of the Toilet Shroud and the Seat
TASK 25-45-22-400-001-A	Installation of the Toilet Shroud and the Seat
TASK 26-17-00-710-001-A	Operational Test of the Lavatory Smoke-Detection System
TASK 33-24-00-710-001-A	Operational Test of the Lavatory Lighting LQ
TASK 33-26-00-710-001-A	Operational Test of the Lavatory Lighted Signs WJ
TASK 33-51-00-710-007-A	Operational Test of the Emergency Lighting in the Cabin with the 'LIGHT EMER' Pushbutton Switch
TASK 35-21-41-000-001-A	Removal of the Emergency Oxygen Containers
TASK 35-21-41-400-001-A	Installation of the Emergency Oxygen Containers
TASK 35-23-00-710-001-A	Operational Check of Manual Mask Release
TASK 38-12-00-710-002-A	Operational Test of the Potable Water-Distribution System (with a Ground Air-Supply Cart)
TASK 38-12-00-710-004-A	Operational Test of a Potable Water Heater
TASK 38-30-00-010-002-A	Removal of the Toilet Drain Lines
TASK 38-30-00-410-002-A	Installation of the Toilet Drain Lines
TASK 38-31-00-710-009-A	Operational Test of the Toilet Unit
TASK 38-31-41-000-001-A	Removal of a Toilet Assembly
TASK 38-31-41-400-001-A	Installation of a Toilet Assembly
TASK 38-32-00-710-002-A	Operational Test of the Waste/Water Drain System
Floor Pan Assembly
Disassembly/Assembly of the Lavatory
Lower Attachments
Upper Attachments
Water Connections
Air Connections
Electrical Connections
Pelmet

3. Job Set-up
Subtask 25-43-44-860-051-K ** ON A/C NOT FOR ALL

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 potable water system is drained (Ref. AMM TASK 12-24-38-680-001).
(3) Make sure that the WARNING NOTICE(S) is in position to tell persons not to do the servicing of the water system.
(4) Make sure that the passenger seat adjacent to the lavatory is removed (Ref. AMM TASK 25-21-41-000-001).
(5) Make sure that the galley is removed (Ref. AMM TASK 25-33-42-000-001).
(6) Make sure that the ceiling panels are removed (Ref. AMM TASK 25-23-41-000-001).
(7) Make sure that the cove light panel are removed (Ref. AMM TASK 25-23-48-000-001).
(8) Make sure that the upper sidewall panel are removed (Ref. AMM TASK 25-23-43-000-001).
(9) Make sure that the lower sidewall panel is removed (Ref. AMM TASK 25-23-44-000-001).
(10) Make sure that the lavatory door is removed (Ref. AMM TASK 25-45-19-000-001).
(11) Make sure that the toilet assembly is removed (Ref. AMM TASK 38-31-41-000-001).
(12) Make sure that the toilet shroud is removed (Ref. AMM TASK 25-45-22-000-001).
(13) Make sure that the toilet drain line is removed (Ref. AMM TASK 38-30-00-010-002).
(14) Make sure that the emergency oxygen container 34WR1 is removed (Ref. AMM TASK 35-21-41-000-001).
(15) Make sure that the Cabin Intercommunication Data System (CIDS) is de-energized (Ref. AMM TASK 23-73-00-862-001).

Subtask 25-43-44-860-053-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) If necessary, examine the Non-Textile Floor covering (NTF) as follows:
(a) If the condition of the NTF is not satisfactory, repair it (Ref. AMM TASK 25-20-00-350-003).
(b) If you cannot repair the NTF, replace it (Ref. AMM TASK 25-28-42-000-001) and (Ref. AMM TASK 25-28-42-400-001).

Subtask 25-43-44-865-066-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	79WL	H07
49VU	OXYGEN/PASSENGER/ACTUATION	7WR	HA08
49VU	OXYGEN/PASSENGER/ACTUATION	6WR	HA07
49VU	OXYGEN/PASSENGER/ACTUATION	5WR	HA06
49VU	OXYGEN/PASSENGER/ACTUATION	4WR	HA05
49VU	OXYGEN/PASSENGER/CTL AND WARN	3WR	HA04
49VU	OXYGEN/PASSENGER/CTL AND WARN	2WR	HA03
49VU	OXYGEN/PASSENGER/CTL AND WARN	1WR	HA02
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M11
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M10
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-CTL	2DW	A01
2000VU	LIGHT-LAV	1LQ	J01
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
2001VU	WATER SYS-QUANT-IND	1MA	B06
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04
2001VU	LAV AFT-HOT WATER-D/L	2MB	B02

Subtask 25-43-44-865-071-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	POT WIP-HEATER-CTL	2DW	A01
2000VU	LIGHT-LAV	1LQ	J01
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
2001VU	WATER SYS-QUANT-IND	1MA	B06
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04
2001VU	LAV AFT-HOT WATER-D/L	2MB	B02

4. Procedure
Subtask 25-43-44-420-061-B ** ON A/C NOT FOR ALL

A. Installation of the Floor Pan Assembly

Floor Pan Assembly ** ON A/C NOT FOR ALL

(1) If the rubber strips (9), (8) and (6) from the floor panel (7) are removed, install them.
(2) If the screws (4) from the floor angle brackets (5) are removed, install them.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(3) Apply the Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the floor pan inside the lavatory.
(4) Apply the Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the screws (3).
(5) Put the floor pan assembly (1) in position and install door sill (2) and the screws (3).
(6) Tighten the screws (3).
(7) Make sure that the work area is clean and clear of tools and other items.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(8) Apply the Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the floor pan and the floor panel at the lavatory door area.

Subtask 25-43-44-420-062-B ** ON A/C NOT FOR ALL

B. Assembly of the Lavatory

Disassembly/Assembly of the Lavatory ** ON A/C NOT FOR ALL

(1) Put the lavatory assemblies (12) and (11) in the center of the aircraft aisle.
(2) Put the lavatory assemblies (12) and (11) in position and install the washers (15) and (14) and the screws (16) and (13).
(3) Install the screw (10) in the door side frame.
(4) Install the washers (8) and the screws (9) and (7) in the ceiling panel (6).
(5) Put the lavatory assemblies (12) and (11) in position on the floor pan assembly (1).
(6) Put the washers (3) in position and install the screws (2).
(7) Put the washers (5) in position and install the screws (4).
(8) Apply a bead of sealants around the floor pan assembly (1) inside of the lavatory assembly.

Subtask 25-43-44-420-063-D ** ON A/C NOT FOR ALL

C. Install the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(1) Apply Mineral Oil base Grease-General Purpose Medium Temp. - (Material No.03FBB1) to the fittings (2), the stoppers (3), the pins (1), the screws (4), the bolts (9) and the bushes (6) and (7).
(2) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the seat tracks in the area of the lavatory.
(3) Put the fittings (2) in position in the seat tracks and install the stoppers (3) and the screws (4).
(4) Tighten the screws (4).
(5) Carefully lift the lavatory assembly in position on the pins (1) and the fittings (2).
(6) Tighten the pins (1).
(7) Install the bushes (6) and (7), the washers (8) and the bolts (9).
(8) Tighten the bolts (9).
(9) Apply Corrosion Preventive Compound-Heavy Duty Hard Film - (Material No.12ACB1) to the head of the bolts (9).
(10) Install the covers (5).

Subtask 25-43-44-420-064-B ** ON A/C NOT FOR ALL

D. Installation of the Upper Attachments

Upper Attachments ** ON A/C NOT FOR ALL

(1) Connect the tie rod (5) to the aircraft structure and install the quick-release pin (2).
(2) If necessary adjust the tie rod:

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(a) Remove and discard the lockwire and loosen the locknut (4).
(b) Adjust the tie rod until you can install the quick-release pin (2).
(c) Make sure that the rod end (3) is in safety.
(d) Tighten the locknut (4) and safety them with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(3) Install the panel (1).

Subtask 25-43-44-420-065-B ** ON A/C NOT FOR ALL

E. Installation of the Water Connections

Water 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) Connect the potable water connections:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the potable water tube (3) and the potable water hose (8) in position and connect the nuts (2) to the fittings (7).
(c) TORQUE the nuts (2) to between 5.9 and 5.4 m.daN (43.51 and 39.82 lbf.ft )

.
(d) Make sure that the potable water hose (8) is not twisted.
(e) Put the bonding straps (4) in position and install the washer (6) and the nut (5) (Ref. AMM TASK 20-28-00-912-802).
(2) Connect the waste-water drain connection:
(a) When you connect/install the components, refer to the match marks made during the removal procedure.
(b) Remove the PLUG-BLANKING from each disconnected line end.
(c) Put the clamp (12) and the drain tube (11) in position and install the nut (13), the washer(s) (14) and the screw (15).
(d) Put the sleeve (10) and the clamps (9) in position on the drain tube (11).
(e) Tighten the clamps (9).
(f) Make sure that the end of the sleeve (10) is aligned with the painted mark on the drain tube (11).

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(g) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the mating surface of the sleeve (10).
(3) Close the sanitary-cabinet access door (1).

Subtask 25-43-44-420-066-B ** ON A/C NOT FOR ALL

F. Installation of the Air Connections

Air Connections ** ON A/C NOT FOR ALL

(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Connect the ventilation hoses:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the clamps (6) in position on the ventilation hose (8) and install the spacers (7), washers (5) and screws (4).
(c) Put the clamps (10) and (12) and the ventilation hoses (9) and (8) in position on the ventilation tube (11).
(d) Tighten the clamps (10) and (12).
(3) Connect the extraction hose:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the air extraction hose (1) and the clamp (2) in position on the tube assembly (3).
(c) Tighten the clamp (2).

Subtask 25-43-44-420-067-A ** ON A/C NOT FOR ALL

G. Installation of the Electrical Connections

Electrical Connections ** ON A/C NOT FOR ALL

(1) Open the sanitary-cabinet access door (3).
(2) Put the cable assembies (4) and (2) in position on the mounts (5) and install the new cable ties (6).
(3) Remove the CAP-BLANKING from each electrical connector and receptacle.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Connect the cable assembly (2) to the flush switch (1).
(6) Put the bracket (14) in position and install the washers (13) and the screws (12).
(7) Connect the electrical connectors (7), (8), (9) and (11).
(8) On the lavatory ceiling, connect the electrical connector (10).
(9) Close the sanitary-cabinet access door (3).

Subtask 25-43-44-410-067-B ** ON A/C NOT FOR ALL

H. Installation of the Lavatory Equipment
(1) Install the toilet assembly (Ref. AMM TASK 38-31-41-400-001).
(2) Do not install the toilet shroud at this time.
(3) Install the emergency oxygen container [34WR1] (Ref. AMM TASK 35-21-41-400-001).
(4) Install the lavatory door (Ref. AMM TASK 25-45-19-400-001).

Subtask 25-43-44-865-068-A ** ON A/C NOT FOR ALL

I. 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
49VU	LIGHTING/EMER LT/CABIN	79WL	H07
49VU	OXYGEN/PASSENGER/ACTUATION	7WR	HA08
49VU	OXYGEN/PASSENGER/ACTUATION	6WR	HA07
49VU	OXYGEN/PASSENGER/ACTUATION	5WR	HA06
49VU	OXYGEN/PASSENGER/ACTUATION	4WR	HA05
49VU	OXYGEN/PASSENGER/CTL AND WARN	3WR	HA04
49VU	OXYGEN/PASSENGER/CTL AND WARN	2WR	HA03
49VU	OXYGEN/PASSENGER/CTL AND WARN	1WR	HA02
121VU	COM NAV/CIDS/DEU A NORM/R FWD	164RH	M11
121VU	COM NAV/CIDS/DEU A NORM/L FWD	163RH	M10
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-CTL	2DW	A01
2000VU	LIGHT-LAV	1LQ	J01
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
2001VU	WATER SYS-QUANT-IND	1MA	B06
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04
2001VU	LAV AFT-HOT WATER-D/L	2MB	B02

Subtask 25-43-44-865-072-A ** ON A/C NOT FOR ALL

J. 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
2000VU	POT WIP-HEATER-CTL	2DW	A01
2000VU	LIGHT-LAV	1LQ	J01
2001VU	VACU TOIL SYS-VACUUM-GEN	33MG	A08
2001VU	VACU TOIL SYS-VACU-SYS	35MG	A06
2001VU	VACU TOIL SYS-LAV PWR-L	45MG	A02
2001VU	WATER SYS-QUANT-IND	1MA	B06
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04
2001VU	LAV AFT-HOT WATER-D/L	2MB	B02

Subtask 25-43-44-710-055-C ** ON A/C NOT FOR ALL

K. Operational Test of the Lavatory Systems
(1) Do the operational test of these potable water/waste-water systems:

Potable water system (Ref. AMM TASK 38-12-00-710-002)
Waste-water drain system (Ref. AMM TASK 38-32-00-710-002),
Vacuum toilet system (Ref. AMM TASK 38-31-00-710-009).

Make sure that there are no leaks.
(2) Operate the lavatory ventilation system (Ref. AMM TASK 12-33-21-618-001).
(a) Examine the ventilation hoses for leaks.
Make sure that there are no leaks.
(3) Do the functional test of the air-extraction point (Ref. AMM TASK 21-23-00-720-002).
(4) Do the operational test of the individual-air outlet system (Ref. AMM TASK 21-21-00-710-002).
(5) Do the operational test of these electrical systems/units:

CIDS (Ref. AMM TASK 23-73-00-740-005).
Lavatory lighting (Ref. AMM TASK 33-24-00-710-001),
Passenger call system (Ref. AMM TASK 23-73-00-710-024).
Lavatory emergency lighting (Ref. AMM TASK 33-51-00-710-007),
Lavatory lighted signs (Ref. AMM TASK 33-26-00-710-001),
Potable water heater (Ref. AMM TASK 38-12-00-710-004),
Lavatory smoke-detection system (Ref. AMM TASK 26-17-00-710-001),
Passenger Address (PA) system (Ref. AMM TASK 23-73-00-710-022),
Passenger oxygen system (Ref. AMM TASK 35-23-00-710-001),
Lavatory emergency lighting (Ref. AMM TASK 33-51-00-710-007).

Subtask 25-43-44-420-068-B ** ON A/C NOT FOR ALL

L. Installation of the Pelmet

Pelmet ** ON A/C NOT FOR ALL

(1) Put the pelmet (1) in position and install the washers (2) and the screws (3).

NOTE: Make sure that the washer (2) is correctly positioned on the pelmet before tightening the screws (3).

5. Close-up
Subtask 25-43-44-410-065-K ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the toilet shroud (Ref. AMM TASK 25-45-22-400-001).
(2) Install the toilet drain line (Ref. AMM TASK 38-30-00-410-002).
(3) Install the ceiling panels (Ref. AMM TASK 25-23-41-400-001).
(4) Install the lower sidewall panel (Ref. AMM TASK 25-23-44-400-001)
(5) Install the upper sidewall panel (Ref. AMM TASK 25-23-43-400-001).
(6) Install the cove light panel (Ref. AMM TASK 25-23-48-400-001).
(7) Install the galley (Ref. AMM TASK 25-33-42-400-001).
(8) Install the passenger seat adjacent to the lavatory (Ref. AMM TASK 25-21-41-400-001).
(9) Make sure that the work area is clean and clear of tools and other items.

Subtask 25-43-44-862-051-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.03.31 23:35:30 UTC