Installation of Lavatory D

TASK 25-43-41-400-001-A
Installation of Lavatory D

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

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
FIN: 5051MM ** ON A/C NOT FOR ALL
FIN: 5102MM ** 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	AR	SAFETY BARRIER(S)
No specific	AR	SCRAPER - NON METALLIC
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.42 and 0.37 m.daN (37.17 and 32.74 lbf.in )
No specific	Torque wrench: range to between 0.46 and 0.38 m.daN (40.71 and 33.63 lbf.in )
No specific	Torque wrench: range to between 5.9 and 5.4 m.daN (43.51 and 39.82 lbf.ft )
No specific	Torque wrench: range to between 6.19 and 5.61 m.daN (45.65 and 41.37 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBB1)	Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.05NAH2)	Adhesive Transfer Tape-- Very High Temp. - Very High Adhesion -
(Material No.05RAC1)	Adhesive Film Tape-- Aluminium Foil - Sound damping -
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06BQD1)	Silicone Sealant-Non Textile Floor Jointing One part -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.08BBD1)	Non Aqueous Cleaner-- Isopropyl Alcohol -
(Material No.12ACC1)	Corrosion Preventive Compound-Heavy Duty Soft Film -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14RAD1)	Cord-- Synthetic fiber Dia: 2.5 mm -
(Material No.14SBA1)	Textile-Lint free Cotton -
No specific	CABLE TIES
No specific	packings NAS 1611-209

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE
251AX, 251BX, 251CX, 251JC, 261TW, 261UW, 261VW
161CW, 161DW
261BC
161JW

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	PACKINGS	AIPC 25-43-04-07-200
5	PACKINGS	AIPC 25-43-04-11-200
5	PACKINGS	AIPC 25-43-04-11-250
5	PACKINGS	AIPC 25-43-04-12-200

E. Referenced Information

REFERENCE	DESIGNATION
TASK 11-00-00-400-007-A	Installation of the ESSO (Scotchcal Labels)
TASK 12-24-38-680-001-A	Draining of the Potable Water System (with Electrical Power)
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 23-73-00-710-005-A	Operational Test of the Passenger Address (PA) system
TASK 23-73-00-710-007-A	Operational Test of the Passenger Call System
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 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 25-22-42-000-001-A	Removal of the Free-Standing Cabin Attendant Seat (CAS)
TASK 25-22-42-400-001-A	Installation of the Free-Standing Cabin Attendant Seat (CAS)
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 25-23-42-000-002-A	Removal of the Ceiling Panels - Aft Utility Area
TASK 25-23-42-400-002-A	Installation of the Ceiling Panels - Aft Utility Area
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 25-23-45-000-003-A	Removal of the Door Frame Linings from the Left Aft Passenger/Crew Door
TASK 25-23-45-400-008-A	Installation of the Door Frame Linings on the Left Aft Passenger/Crew Door
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 25-26-41-000-003-A	Removal of the Aft Curtain Rail
TASK 25-26-41-400-003-A	Installation of the Aft Curtain Rail
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 25-43-44-000-001-A	Removal of Lavatory H
TASK 25-43-44-400-001-A	Installation of Lavatory H
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 25-55-12-000-001-A	Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-000-003-A	Removal of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 25-55-12-400-001-A	Installation of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 26-17-00-710-001-A	Operational Test of the Lavatory Smoke-Detection System
TASK 30-71-53-000-001-A	Removal of the Waste-Water De-icing Heater Elements
TASK 30-73-53-000-001-A	Removal of the Potable-Water De-icing Heater Elements
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 38-10-00-614-002-A	Depressurization of the Potable Water System
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 38-31-00-710-009-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
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Floor Pan Assembly ** ON A/C NOT FOR ALL
Floor Pan Assembly ** ON A/C NOT FOR ALL
Disassembly/Assembly of the Lavatory ** ON A/C NOT FOR ALL
Disassembly/Assembly of the Lavatory ** ON A/C NOT FOR ALL
Lower Attachments ** ON A/C NOT FOR ALL
Lower Attachments ** ON A/C NOT FOR ALL
Lower Attachments ** ON A/C NOT FOR ALL
Lower Attachments ** ON A/C NOT FOR ALL
Upper Attachment(s)
Water Connections ** ON A/C NOT FOR ALL
Water Connections ** ON A/C NOT FOR ALL
Water Connections ** ON A/C NOT FOR ALL
Air Connections
Electrical Connections
Pelmets ** ON A/C NOT FOR ALL
Water Seal ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 25-43-41-860-053-A ** ON A/C NOT FOR ALL

Not to do the servicing of the potable water system.

(4) Make sure that the free-standing cabin attendant-seat is removed (Ref. AMM D/O 25-22-42-00).

Subtask 25-43-41-860-053-D ** 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 (are) in position to tell persons not to do the servicing of the potable water system.
(4) Make sure that the free-standing cabin-attendant seat is removed (Ref. AMM TASK 25-22-42-000-001).
(5) Make sure that the curtain(s) and the curtain rail(s) is (are) removed (Ref. AMM TASK 25-26-41-000-003).
(6) Make sure that lavatory H is removed (Ref. AMM TASK 25-43-44-000-001).

Subtask 25-43-41-860-053-W ** 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).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

(2) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(3) Make sure that the potable water system is drained (Ref. AMM TASK 12-24-38-680-001).
(4) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to do the servicing of the potable water system.
(5) Make sure that the free-standing Cabin Attendant Seat (CAS) is removed (Ref. AMM TASK 25-22-42-000-001).
(6) Make sure that the curtain(s) and the curtain rail(s) are removed (Ref. AMM TASK 25-26-41-000-003).
(7) If necessary, remove the passenger seat(s) adjacent to the lavatory (Ref. AMM TASK 25-21-41-000-001).

Subtask 25-43-41-860-054-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that ceiling panel 261BC and the trim panel in the aft utility area are removed (Ref. AMM TASK 25-23-42-000-002).
(2) Make sure that ceiling panel 251JC is removed (Ref. AMM TASK 25-23-41-000-001).
(3) Make sure that cove light panel 251CX is removed (Ref. AMM TASK 25-23-48-000-001).
(4) Make sure that upper sidewall panel 251BX is removed (Ref. AMM TASK 25-23-43-000-001).
(5) Make sure that lower sidewall panel 251AX is removed (Ref. AMM TASK 25-23-44-000-001).

Subtask 25-43-41-860-055-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Make sure that door frame lining-panels 261TW 261UW and 261VW are removed (Ref. AMM TASK 25-23-45-000-003).

Subtask 25-43-41-860-056-D ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration
(1) Make sure that the lavatory door is removed (Ref. AMM TASK 25-45-19-000-001).
(2) Make sure that emergency oxygen container [31WR] is removed (Ref. AMM TASK 35-21-41-000-001).
(3) In the lavatory:
(a) Make sure that the toilet shroud is removed (Ref. AMM TASK 25-45-22-000-001).
(b) Make sure that the toilet assembly is removed (Ref. AMM TASK 38-31-41-000-001).
(c) If necessary, remove the related waste-water pipe heaters and insulation (Ref. AMM TASK 30-71-53-000-003).
(d) If necessary, remove the related potable-water pipe heaters and insulation (Ref. AMM TASK 30-73-53-000-001).
(4) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(5) In the aft cargo compartment:
(a) Make sure that partition 161DW is removed (Ref. AMM TASK 25-55-12-000-001).
(b) Make sure that sidewall panel 161CW is removed (Ref. AMM TASK 25-55-12-000-003).

Subtask 25-43-41-860-054-C ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Make sure that the applicable ceiling panel and the trim panel in the aft utility area are removed (Ref. AMM TASK 25-23-42-000-002).
(2) Make sure that the applicable ceiling panel(s) is (are) removed (Ref. AMM TASK 25-23-41-000-001).
(3) Make sure that the applicable cove light panel(s) is (are) removed (Ref. AMM TASK 25-23-48-000-001).
(4) Make sure that the applicable upper sidewall panel(s) is (are) removed (Ref. AMM TASK 25-23-43-000-001).
(5) Make sure that the applicable lower sidewall panel(s) is (are) removed (Ref. AMM TASK 25-23-44-000-001).

Subtask 25-43-41-860-055-C ** ON A/C NOT FOR ALL

F. Aircraft Maintenance Configuration
(1) Make sure that the door-frame lining panels are removed (Ref. AMM TASK 25-23-45-000-003).

Subtask 25-43-41-860-056-A ** ON A/C NOT FOR ALL

G. Aircraft Maintenance Configuration
(1) Make sure that the lavatory door is removed (Ref. AMM TASK 25-45-19-000-001).
(2) Make sure that emergency oxygen container 31WR is removed (Ref. AMM TASK 35-21-41-000-001).
(3) In the lavatory:
(a) Make sure that the toilet shroud is removed (Ref. AMM TASK 25-45-22-000-001).
(b) Make sure that the toilet assembly is removed (Ref. AMM TASK 38-31-41-000-001).
(4) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(5) In the aft cargo compartment:
(a) Make sure that partition 161DW is removed (Ref. AMM TASK 25-55-12-000-001).
(b) Make sure that sidewall panel 161CW is removed (Ref. AMM TASK 25-55-12-000-003).

Subtask 25-43-41-860-052-A ** ON A/C NOT FOR ALL

H. 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 25-43-41-865-051-A ** ON A/C NOT FOR ALL

I. 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	AIR COND/SDCU/CHAN1	11WQ	C06
** 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 AFT	168RH	M14
121VU	COM NAV/CIDS/DEU A NORM/L AFT	167RH	M13
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R AFT	168RH	M12
121VU	COM NAV/CIDS/DEU A NORM/L AFT	167RH	M11
** 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
** ON A/C NOT FOR ALL
2000VU	POT/WASTE WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2000VU	LIGHT-LAV	1LQ	J01
** ON A/C NOT FOR ALL
2000VU	POT WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2001VU	LAVATORY AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04
** ON A/C NOT FOR ALL
2001VU	LAV SHAVER SOCKET	1MT	B01
** 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-D/L	2MB	B02

Subtask 25-43-41-210-054-A ** ON A/C NOT FOR ALL

J. Preparation for Installation
(1) If necessary, remove the SAFETY BARRIER(S).
(2) Clean the component interfaces and the adjacent area.
(3) Remove the sealant from the floor panel and the attached components with the SCRAPER - NON METALLIC.
(4) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and Textile-Lint free Cotton - (Material No.14SBA1) .
(5) Do an inspection of the component interfaces and the adjacent area.
(6) Make sure that the parts retained from the removed component are clean and in the correct condition.
(7) Make sure that the placards of the retained/new components are in the correct position and in good condition.
(a) If necessary, install the new placards:

(8) Prepare the bonding (Ref. AMM TASK 20-28-00-912-802).

4. Procedure
Subtask 25-43-41-420-074-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 (18), (19) and (21) from the floor panel (20) are removed, install them.
(2) If the screws (16) from the floor angle brackets (17) are removed, install them.

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

(3) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the floor pan inside the lavatory.
(4) Apply the special materials Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the screws (5).
(5) Put the door sill (6) in position and install the screws (5).
(6) TORQUE the screws (5) to between 0.42 and 0.37 m.daN (37.17 and 32.74 lbf.in )

.
(7) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the floor pan and the floor panel at the lavatory door opening.
(8) Cut the rubber strip (4) to length and put it in position.
(9) Put the rear partition panel (1) in position and install the washers (2) and the screws (3).
(10) Make sure that the work area is clean and clear of tools and other items.
(11) Put the floor pan (7) in position and install the washers (8) and the screws (9).
(12) Put the front-shroud panel (10) in position and install the washers (11) and the screws (12).

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

(13) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the floor pan and the floor panel at the lavatory door area.
(14) Make sure that the work area is clean and clear of tools and other items.
(15) Put the floor panel (13) in position and install the screws (22), the washers (14) and the screws (15).
(16) TORQUE the screws (22) to between 0.46 and 0.38 m.daN (40.71 and 33.63 lbf.in )

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

(17) Cut the new SYNTHETIC FIBRE CORD (NYLON) 2.5MM DIA to length and put the cord in the floor panel joints.

NOTE: Cut the synthetic fiber cord longer than the necessary length to make an overlap of approximately 200 mm (8.0 in.) at each end.

(18) After application of the sealant, turn the ends back to make a loop and press the loop into the sealant. This helps the next removal procedure.
(19) Fill the floor panel joints with Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) .
(20) When the sealant is dry, cut the Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) to length, and put it on the floor panel joints.

Subtask 25-43-41-420-074-E ** ON A/C NOT FOR ALL

A. Installation of the Floor Pan Assembly

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

(1) When you connect/install the components, refer to the match marks made during the removal procedure.
(2) Install the rubber strips (9), (10) and (11) on the floor panel (4).
(3) Install the screws (7) on the floor angle brackets (8).

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

(4) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the floor pan in the inner part lavatory.
(5) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the screws (3).
(6) Put the floor pan assembly (1) in position and install the door sill (2) and the screws (3).
(7) Tighten the screws (3).
(8) Apply Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to the floor pan and the floor panel at the lavatory door opening.
(9) 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.

(10) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the floor pan and the floor panel at the lavatory door area.
(11) Make sure that the work area is clean and clear of tools and other items.
(12) Put the floor panel (4) in position and install the screws (12), washers (5) and screws (6).
(13) Tighten the screws (12) and (6).

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

(14) Cut a new cord 14RAD1Cord-- Synthetic fiber Dia: 2.5 mm - longer than the necessary length to make an overlap of approximately 200 mm (8.0 in.) at each end.
(15) Put the cord 14RAD1Cord-- Synthetic fiber Dia: 2.5 mm - in the floor panel joints.
(16) Fill the floor panel joints with Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) .
(17) After application of the sealant, turn the ends back to make a loop and press the loop into the sealant. This helps the next removal procedure.
(18) When the sealant is dry, cut the adhesive tape Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) to the necessary length and put it on the floor panel joints.

Subtask 25-43-41-420-073-A ** 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 in the center of the aft utility area.
(2) Put the forward side wall (14) and rear wall (11) in position and install the washers (13) and the screws (12).
(3) Install the washers (8), the screws (9) and the screws (2) in the ceiling panel (1).
(4) Put the angle section (3) in position and install the washers (6) and the screws (7).
(5) Install the screws (18).
(6) Put the T-section (17) and the L-section (16) in position and install the screws (15).
(7) Install the screws (10).

Subtask 25-43-41-420-073-B ** ON A/C NOT FOR ALL

B. Assembly of the Lavatory

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

(1) When you connect/install the components, refer to the match marks made during the removal procedure.
(2) Put the lavatory assemblies (1) and (2) in the center of the aircraft aisle.
(3) Put the lavatory assemblies (1) and (2) in position and install the washers (3) and (5) and the screws (4) and (6).
(4) Tighten the screws (4) and (6).
(5) Install the screw (7) on the door side frame.
(6) Tighten the screw (7).
(7) Install the washers (10) and the screws (9) and (8) on the lavatory assembly (2).
(8) Tighten the screws (9) and (8).
(9) Put the lavatory assemblies (1) and (2) in position on the floor pan assembly (11).
(10) Put the washers (15) in position and install the screws (14).
(11) Tighten the screws (14).
(12) Put the washers (13) in position and install the screws (12).
(13) Tighten the screws (12).
(14) Apply a bead of Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) around the floor pan assembly (11) in the inner part the lavatory assembly.

Subtask 25-43-41-420-072-A ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

(1) If necessary, install the shims (5).
(2) Install the washers (3) and the bolts (2) in the wall fittings (1).
(3) Cut the new synthetic cord to length and put the cord Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) (10) at the floor panel and component interfaces.
(4) Cut the synthetic fiber cord (10) longer than necessary to make an overlap of approximately 200/+4/mm at each end. After application of the sealant, turn the ends 200 mm (7.8740 in.) back to make a loop and press the loop into the sealant. This helps the next removal procedure.
(5) Apply the sealant.
(6) Apply the SEALANTS to the floor panel and component interfaces.
(7) Apply the SEALANTS to seal the bolts (2).
(8) Install the wall fitting covers (4).
(9) Install the screw (8) in the bracket (9).
(10) Install the screw (6) in the door locator (7).

Subtask 25-43-41-420-072-C ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

(1) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the bolts (2) and new packings NAS 1611-209 (3).
(2) Put the new packing (3) in position at the attachment point locations.
(3) Put the lavatory assembly in position and install the bolts (2) in the fittings (1).

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

(4) Apply Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the bolts (2).
(5) Install the wall fitting cover (4).

Subtask 25-43-41-420-072-E ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

(1) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the bushes (6), the new AIPC 25-43-04-11-250 PACKINGS (5) and the threads of the bolts (1).
(2) Put the packings (5) and the bushes (6) in position.
(3) Carefully put the lavatory assembly in position.
(4) Put the eccentric bushes (3) and (2) in position.
(a) If necessary, turn the eccentric bushes (3) and (2) until it is possible to install the bolts (1).
(5) Install the bolts (1).
(6) Tighten the bolts (1).
(7) Apply Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the heads of the bolts (1).
(8) Install the covers (4).
(9) Install the cover (7) and the screws (8).
(10) Install the cover plate (9) and the screws (10).

Subtask 25-43-41-420-072-F ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

(1) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the bushes (6), the new <IPC Ref TBD packings> (5) and the threads of the bolts (1).
(2) Put the packings (5) and the bushes (6) in position.
(3) Carefully put the lavatory assembly in position.
(4) Put the eccentric bushes (3) and (2) in position.
(a) If necessary, turn the eccentric bushes (3) and (2) until it is possible to install the bolts (1).
(5) Install the bolts (1).
(6) Tighten the bolts (1).
(7) Apply Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the heads of the bolts (1).
(8) Install the cover (4).

Subtask 25-43-41-420-072-N ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

(1) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the bushes (6), the new AIPC 25-43-04-07-200 PACKINGS (5) and the threads of the bolts (1).
(2) Put the packings (5) and the bushes (6) in position.
(3) Carefully put the lavatory assembly in position.
(4) Put the eccentric bushes (3) and (2) in position.
(a) If necessary, turn the eccentric bushes (3) and (2) until it is possible to install the bolts (1).
(5) Install the bolts (1).
(6) Tighten the bolts (1).
(7) Apply Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the heads of the bolts (1).
(8) Install the cover (4).

Subtask 25-43-41-420-072-U ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

(1) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the bushes (6), the new

(2) Put the packings (5) and the bushes (6) in position.
(3) Carefully put the lavatory assembly in position.
(4) Put the eccentric bushes (3) and (2) in position.
(a) If necessary, turn the eccentric bushes (3) and (2) until it is possible to install the bolts (1).
(5) Install the bolts (1).
(6) Tighten the bolts (1).
(7) Apply Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the heads of the bolts (1).
(8) Install the covers (4).

Subtask 25-43-41-420-072-A0 ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

Lower Attachments ** ON A/C NOT FOR ALL

(1) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the bushes (6), the new AIPC 25-43-04-11-200 PACKINGS (5) and the threads of the bolts (1).
(2) Put the packings (5) and the bushes (6) in position.
(3) Carefully put the lavatory assembly in position.
(4) Put the eccentric bushes (3) and (2) in position.
(a) If necessary, turn the eccentric bushes (3) and (2) until it is possible to install the bolts (1).
(5) Install the bolts (1).
(6) Tighten the bolts (1).
(7) Apply Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) to the heads of the bolts (1).
(8) Install the cover (4).

Subtask 25-43-41-420-071-A ** ON A/C NOT FOR ALL

D. Installation of the Upper Attachment(s)

Upper Attachment(s) ** ON A/C NOT FOR ALL

(1) Put the tie-rod (1) in position.
(2) If necessary, adjust the tie-rod (1) as follows:

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) Cut and discard the lockwire and loosen the locknuts.
(b) Adjust the tie-rod end until you can install the quick-release pin (2).
(c) Make sure that the tie-rod end is safetied.
(d) Tighten each locknut and safety it with the new lockwire 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(3) If necessary, put the tie-rod (3) in position.
(4) If necessary, adjust the tie-rod (3) as follows:

(a) Cut and discard the lockwire and loosen the locknuts.
(b) Adjust the tie-rod end until you can install the quick-release pin (4).
(c) Make sure that the tie-rod end is safetied.
(d) Tighten each locknut and safety it with the new lockwire 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 25-43-41-930-051-A ** ON A/C NOT FOR ALL

E. Marking on the Ventilation Connections, the Potable Water Connections and the Waste-Water Drain Connections
(1) When you connect/install the components, refer to the match marks made during the removal procedure.

Subtask 25-43-41-420-070-A ** ON A/C NOT FOR ALL

F. 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 as follows:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the potable water tube (2) and the hose (7) in position and connect the nuts (1) to the fittings (6).
(c) TORQUE the nuts (1) to between 6.19 and 5.61 m.daN (45.65 and 41.37 lbf.ft )

.
(d) Make sure that the hose (7) is not twisted.
(e) Put the bonding straps (3) in position and install the washer (5) and the nut (4). Do the bonding (Ref. AMM TASK 20-28-00-912-802).
(f) Tighten the nut (4).
(2) Connect the waste-water drain connection as follows:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the drain tube (9) in position and install the clamp (8).
(c) Tighten the clamp (8).
(d) Make sure that the work area is clean and clear of tools and other items.

Subtask 25-43-41-420-070-D ** ON A/C NOT FOR ALL

F. Installation of the Water Connections

Water Connections ** ON A/C NOT FOR ALL

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 (2) and the potable water hose (8) in position and connect the nuts (1) to the fittings (7).
(c) TORQUE all the nuts (1) to between 5.9 and 5.4 m.daN (43.51 and 39.82 lbf.ft )

.
(d) Make sure that the potable water hose (7) 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 drain tube (10) in position and install the clamp (9).
(d) Tighten the clamp (9).
(3) If necessary, put the insulation (3) in its correct position.

Subtask 25-43-41-420-070-AJ ** ON A/C NOT FOR ALL

F. Installation of the Water Connections

Water Connections ** ON A/C NOT FOR ALL

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 (2) and the potable water hose (7) in position and connect the nuts (1) to the fittings (6).
(c) TORQUE all the nuts (1) to between 5.9 and 5.4 m.daN (43.51 and 39.82 lbf.ft )

.
(d) Make sure that the potable water hose (7) is not twisted.
(e) Put the bonding straps (3) in position and install the washer (5) and the nut (4) (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 drain tube (9) and the clamps (8) in position on the drain tube (10).
(d) Tighten the clamps (8).
(e) Make sure that the end of the sleeve (9) is aligned with the painted mark on the drain tube (10).

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

(f) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the mating surface of the sleeve (9).

Subtask 25-43-41-420-069-A ** ON A/C NOT FOR ALL

G. 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 (7) and (12) as follows:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the clamp (9) in position and connect the ventilation hose (7) to the fitting (10).
(c) Tighten the clamp (9).
(d) Put the clamp (6) in position on the ventilation hose (7) and install the spacer (8), washers (4) and screw (5).
(e) Tighten the screw (5).
(f) Put the clamp (11) in position and connect the ventilation hose (12) to the fitting (10).
(g) Tighten the clamp (11).
(3) Connect the air-extraction hose (1) as follows:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the clamp (2) in position and connect the air-extraction hose (1) to the fitting (3).
(c) Tighten the clamp (2).
(d) Put the clamps (13) in position and connect the bellow (14) to the air-extraction line.
(e) Tighten the clamps (13).

Subtask 25-43-41-420-068-A ** ON A/C NOT FOR ALL

H. Installation of the Electrical Connections

Electrical Connections ** ON A/C NOT FOR ALL

(1) When you connect/install the components, refer to the match marks made during the removal procedure.
(2) If removed, install the cable assembly (9) as follows:
(a) Remove the temporary attachment from the cable assembly (9).
(b) Put the cable assembly (9) in position on the mounts (11) and install the new CABLE TIES (10).
(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 (9) to the flush switch (2).
(6) Open the sanitary-cabinet access door (3).
(7) Put the bracket (5) in position and install the washers (7) and the screws (6).
(8) Tighten the screws (6).
(9) Connect the electrical connector (4).
(10) If necessary, attach the cable assembly (12) to the cable assembly (8) with the new CABLE TIES (13).
(11) Put the cable assemblies (8) and (12) in position on the mounts (14) and install the new CABLE TIES (15).
(12) On the lavatory ceiling, connect electrical connector 7202VC-A (16).
(13) Close the sanitary-cabinet access door (3).

Subtask 25-43-41-410-072-A ** ON A/C NOT FOR ALL

I. Installation of the Miscellaneous 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 emergency oxygen container [31WR] (Ref. AMM TASK 35-21-41-400-001).
(4) Install the lavatory door (Ref. AMM TASK 25-45-19-400-001).

Subtask 25-43-41-869-054-A ** ON A/C NOT FOR ALL

J. Preparation for Test
(1) On panel 25VU:
(a) Make sure that NO SMOKING switch 190RH is in the OFF position.
(b) Make sure that EMER EXIT LT switch 4WL is in the OFF position and OFF light 5WL is on.

Subtask 25-43-41-865-052-A ** ON A/C NOT FOR ALL

K. 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	AIR COND/SDCU/CHAN1	11WQ	C06
** 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 AFT	168RH	M14
121VU	COM NAV/CIDS/DEU A NORM/L AFT	167RH	M13
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/R AFT	168RH	M12
121VU	COM NAV/CIDS/DEU A NORM/L AFT	167RH	M11
** 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
** ON A/C NOT FOR ALL
2000VU	POT/WASTE WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2000VU	LIGHT-LAV	1LQ	J01
** ON A/C NOT FOR ALL
2000VU	POT WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2001VU	LAVATORY AFT-HOT WATER-D	2MB	B02
** ON A/C NOT FOR ALL
2001VU	LAVATORY AFT-OCCUPIED	11WJ	B04
** ON A/C NOT FOR ALL
2001VU	LAV SHAVER SOCKET	1MT	B01
** 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-D/L	2MB	B02

Subtask 25-43-41-710-057-B ** ON A/C NOT FOR ALL

L. Operational Test of the Lavatory Systems
(1) Do the test of these water/waste systems:

The potable water system (Ref. AMM TASK 38-12-00-710-002)
The waste-water drain system (Ref. AMM TASK 38-32-00-710-002)
The toilet system (Ref. AMM TASK 38-31-00-710-009).

(a) Make sure that there are no leaks.

NOTE: Leaks are not permitted.

(2) Do the functional test of the air-extraction point (Ref. AMM TASK 21-23-00-720-002).
(3) Do the operational test of the individual-air outlet system (Ref. AMM TASK 21-21-00-710-002).
(4) Do the operational test of these electrical systems:

The lavatory lighting (Ref. AMM TASK 33-24-00-710-001)
The lavatory emergency lighting (Ref. AMM TASK 33-51-00-710-007)
The lavatory lighted signs (Ref. AMM TASK 33-26-00-710-001)
The potable water heater (Ref. AMM TASK 38-12-00-710-004)
The lavatory smoke-detection system (Ref. AMM TASK 26-17-00-710-001)
The Passenger Address (PA) system (Ref. AMM TASK 23-73-00-710-005)
The passenger call system (Ref. AMM TASK 23-73-00-710-007)
The passenger emergency-oxygen system (Ref. AMM TASK 35-23-00-710-001).

(5) Make sure that the lavatory auxiliary light is on.

Subtask 25-43-41-710-057-C ** ON A/C NOT FOR ALL

L. Operational Test of the Lavatory Systems
(1) Do a test of these water/waste systems:

The potable water system (Ref. AMM TASK 38-12-00-710-002)
The waste-water drain system (Ref. AMM TASK 38-32-00-710-002)
The toilet system (Ref. AMM TASK 38-31-00-710-009).

(a) Make sure that there are no leaks.

NOTE: Leaks are not permitted.

(2) Do a functional test of an air extraction point (Ref. AMM TASK 21-23-00-720-002).
(3) Do the operational test of the individual air outlet system (Ref. AMM TASK 21-21-00-710-002).
(4) Do an operational test of these electrical systems:

The lavatory lighting (Ref. AMM TASK 33-24-00-710-001)
The lavatory emergency lighting (Ref. AMM TASK 33-51-00-710-007)
The lavatory lighted signs (Ref. AMM TASK 33-26-00-710-001)
The potable water heater (Ref. AMM TASK 38-12-00-710-004)
The lavatory smoke detection (Ref. AMM TASK 26-17-00-710-001)
The passenger address system (Ref. AMM TASK 23-73-00-710-022)
The passenger call system (Ref. AMM TASK 23-73-00-710-024)
The passenger emergency-oxygen system (Ref. AMM TASK 35-23-00-710-001).

(5) Make sure that the lavatory auxiliary light is on.

Subtask 25-43-41-420-067-A ** ON A/C NOT FOR ALL

M. Installation of the Pelmets

(1) Make sure that the work area is clean and clear of tools and other items.
(2) Put the pelmet (9) in position and install the washers (8) and the screws (7).
(3) Put the pelmet (6) in position and install the screws (10).
(4) Install the trim panel in the aft utility area (Ref. AMM TASK 25-23-42-400-002).

Subtask 25-43-41-420-067-C ** ON A/C NOT FOR ALL

M. Installation of the Pelmets

Pelmets ** 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) Put the pelmet (3) in position and install the washers (2) and the screws (4).

NOTE: Make sure that the washers (2) are correctly positioned on the pelmet before tightening the screws.

(2) Put the top pelmet (5) in position and install the washers (2) and the screws (1).

Subtask 25-43-41-420-067-F ** ON A/C NOT FOR ALL

M. Installation of the Pelmet

Pelmets ** ON A/C NOT FOR ALL

(1) When you connect/install the components, refer to the match marks made during the removal procedure.
(2) Put the pelmet (18) in position and install the washer (19) and the screws (20).
(3) Make sure that the washer (19) is in correct position on the pelmet (18) before you tighten the screws (20).
(4) Tighten the screws (20).

5. Close-up
Subtask 25-43-41-410-074-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the toilet shroud (Ref. AMM TASK 25-45-22-400-001).
(2) Install ceiling panel 261BC and the trim panel in the aft utility area (Ref. AMM TASK 25-23-42-400-002).
(3) Install ceiling panel 251JC (Ref. AMM TASK 25-23-41-400-001).
(4) Install cove light panel 251CX (Ref. AMM TASK 25-23-48-400-001).
(5) Install upper sidewall panel 251BX (Ref. AMM TASK 25-23-43-400-001).
(6) Install lower sidewall panel 251AX (Ref. AMM TASK 25-23-44-400-001).

Subtask 25-43-41-410-074-B ** 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 applicable ceiling panel and the trim panel in the aft utility area (Ref. AMM TASK 25-23-42-400-002).
(3) Install the applicable ceiling panel (Ref. AMM TASK 25-23-41-400-001).
(4) Install the applicable cove light panel (Ref. AMM TASK 25-23-48-400-001).
(5) Install the applicable upper sidewall panel (Ref. AMM TASK 25-23-43-400-001).
(6) Install the applicable lower sidewall panel (Ref. AMM TASK 25-23-44-400-001).

Subtask 25-43-41-410-074-D ** 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 ceiling panel 261BC in the aft utility area (Ref. AMM TASK 25-23-42-400-002).

Subtask 25-43-41-410-075-N ** ON A/C NOT FOR ALL

B. Close Access
(1) Install the adjacent lavatory (Ref. AMM TASK 25-43-44-400-001).
(2) Install the door frame lining-panels (Ref. AMM TASK 25-23-45-400-008).
(3) Install the free-standing CAS (Ref. AMM TASK 25-22-42-400-001).
(4) Install the curtain rail(s) and the curtain(s) (Ref. AMM TASK 25-26-41-400-003).

Subtask 25-43-41-410-075-O ** ON A/C NOT FOR ALL

B. Close Access
(1) Install door-frame lining panels 261TW 261UW and 261VW (Ref. AMM TASK 25-23-45-400-008).
(2) Install the curtain rail(s) and the curtain(s) (Ref. AMM TASK 25-26-41-400-003).
(3) Install the aft cargo compartment door (Ref. AMM TASK 52-30-00-860-001).
(4) In the aft cargo compartment, install partition 161JW (Ref. AMM TASK 25-55-12-400-001).
(5) In the aft cargo compartment, install sidewall panel 161CW (Ref. AMM TASK 25-55-12-400-003).
(6) Install the free-standing cabin-attendent seat (Ref. AMM D/O 25-22-42-40).
(7) Install the passenger seat adjacent to the lavatory (Ref. AMM TASK 25-21-41-400-001).

Subtask 25-43-41-410-075-AA ** ON A/C NOT FOR ALL

B. Close Access
(1) Install the door frame lining-panels (Ref. AMM TASK 25-23-45-400-008).
(2) Install the free-standing CAS (Ref. AMM TASK 25-22-42-400-001).
(3) Install the curtain rail(s) and the curtain(s) (Ref. AMM TASK 25-26-41-400-003).
(4) If the passenger seat(s) adjacent to the lavatory is (are) removed, install it (them) (Ref. AMM TASK 25-21-41-400-001).

Subtask 25-43-41-410-075-AB ** ON A/C NOT FOR ALL

B. Close Access
(1) Install door-frame lining panels 261TW 261UW and 261VW (Ref. AMM TASK 25-23-45-400-008).
(2) Install the free-standing cabin-attendant seat (Ref. AMM TASK 25-22-42-400-001).
(3) Install the curtain rail(s) and the curtain(s) (Ref. AMM TASK 25-26-41-400-003).
(4) Install the passenger seat(s) adjacent to the lavatory (Ref. AMM TASK 25-21-41-400-001).

Subtask 25-43-41-410-076-A ** ON A/C NOT FOR ALL

C. Close Access
(1) In the aft cargo compartment:
(a) Install partition 161DW (Ref. AMM TASK 25-55-12-400-001).
(b) Install sidewall panel 161CW (Ref. AMM TASK 25-55-12-400-003).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(4) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).

Subtask 25-43-41-410-076-D ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).

Subtask 25-43-41-390-051-A ** ON A/C NOT FOR ALL

D. Repair of the Water Seal

Water Seal ** ON A/C NOT FOR ALL

(1) Do a visual inspection of the seal (part of the lavatory).
(2) If necessary, remove the damaged seal.
(3) Clean the component interfaces and the adjacent area.
(4) Install the new seal as follows:
(a) Cut the silicone section to the correct length and attach it with Adhesive Transfer Tape-- Very High Temp. - Very High Adhesion - (Material No.05NAH2) to the cabin floor.
(b) Make sure that the seal touches the lavatory and the lower sidewall panel.
(c) If necessary, seal the space between the lavatory and the lower sidewall panel with Silicone Sealant-Non Textile Floor Jointing One part - (Material No.06BQD1) .

Subtask 25-43-41-862-050-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.03.31 23:35:19 UTC