Installation of Lavatory A

TASK 25-41-41-400-001-B
Installation of Lavatory A

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: 5070MM ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SCRAPER - NON METALLIC
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.28 and 0.22 m.daN (24.78 and 19.47 lbf.in )
No specific	Torque wrench: range to between 0.40 and 0.32 m.daN (35.40 and 28.32 lbf.in )
No specific	Torque wrench: range to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
No specific	Torque wrench: range to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
No specific	Torque wrench: range to between 5.90 and 5.40 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.06AEA1)	Polysulfide Sealant-Low Adhesion Brushable -
(Material No.06CED1)	Silicone Adhesive Sealant-Rubber & Plastic Bonding One part -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy
(Material No.06LCB1)	Non Hardening Jointing Putty-Medium Temp. Area Chromate Free -
(Material No.08BBD1)	Non Aqueous Cleaner-- Isopropyl Alcohol -
(Material No.08BBF1)	Non Aqueous Cleaner_- Methyl-Ethyl-Ketone -
(Material No.12ACB1)	Corrosion Preventive Compound-Heavy Duty Hard Film -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE
812

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
7	PACKINGS	AIPC 25-44-40-20-999
11	PACKING	AIPC 38-31-81-40-050

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 20-11-11-911-001-A	Safetying with Lockwire
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 23-73-00-710-017-A	Operational Test of the Cabin Signs
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 23-73-00-861-001-A	Energize the Cabin Intercommunication Data System (CIDS)
TASK 23-73-00-862-001-A	De-energize the Cabin Intercommunication Data System (CIDS)
TASK 23-73-12-000-007-A	Removal of the Flight Attendant Panel
TASK 23-73-12-400-007-A	Installation of the Flight Attendant Panel
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 25-22-41-000-001-A	Removal of the Wall-Mounted Cabin-Attendant Seats
TASK 25-22-41-400-001-A	Installation of the Wall-Mounted Cabin-Attendant Seats
TASK 25-23-42-000-001-A	Removal of the Ceiling Panels - Forward Utility Area
TASK 25-23-42-400-001-A	Installation of the Ceiling Panels - Forward Utility Area
TASK 25-23-45-000-005-A	Removal of the Door Frame Linings from the Left Forward Passenger/Crew Door
TASK 25-23-45-400-006-A	Installation of the Door Frame Linings on the Left Forward Passenger/Crew Door
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 25-45-19-000-001-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 26-17-15-000-802-A	Removal of the Smoke Detector of Lavatory A
TASK 26-17-15-400-802-A	Installation of the Smoke Detector of Lavatory A
TASK 30-71-53-000-003-A	Removal of the Waste-Water De-icing Heater Elements
TASK 30-71-53-400-003-A	Installation 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 30-73-53-400-001-A	Installation of the Potable-Water De-icing Heater Elements
TASK 30-73-54-000-002-A	Removal of the Inner Line Heater
TASK 30-73-54-400-002-A	Installation of the Inner Line Heater
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 33-27-00-710-001-A	Operational Test of the Cabin Attendant Work-Light
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 35-23-00-710-002-A	Operational Test of the Manual Release Mechanism for the Passenger Emergency Oxygen-System Masks
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 38-13-00-710-001-A	Operational Test of the Quantity Indicating System
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
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
TASK 52-51-00-710-002-A	Operational Test of the Cockpit-Door Locking System (CDLS)
TASK 52-51-00-710-003-A	Operational Test of the Emergency Access
TASK 52-51-11-000-001-A	Removal of the Cockpit Door
TASK 52-51-11-400-001-A	Installation of the Cockpit Door
CMM 254120
TASK 11-00-00-00	PLACARDS AND MARKINGS - DESCRIPTION AND OPERATION
TASK 25-41-00-00	FORWARD LAVATORIES - DESCRIPTION AND OPERATION
LOWER ATTACHMENTS
DOOR SILL
UPPER ATTACHMENTS
CEILING SUPPORTS
WATER CONNECTIONS
AIR CONNECTIONS
ELECTRICAL CONNECTIONS

3. Job Set-up
Subtask 25-41-41-860-090-A ** 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) For the location of this component, refer to paragraph Component Location
(Ref. AMM D/O 25-41-00-00).
(6) Make sure that the Cabin Intercommunication Data System (CIDS) is de- energized
(Ref. AMM TASK 23-73-00-862-001).
(7) Make sure that lateral-avionics-compartment access-door 812 is open (Ref. AMM TASK 52-41-00-010-002).
(8) Make sure that each wall-mounted Cabin Attendant Seat (CAS) is removed (Ref. AMM TASK 25-22-41-000-001).
(9) Make sure that the Flight Attendant Panel (FAP) is removed (Ref. AMM TASK 23-73-12-000-007).
(10) Make sure that the cockpit door is removed (Ref. AMM TASK 52-51-11-000-001).
(11) Make sure that the forward utility-area ceiling-panels are removed (Ref. AMM TASK 25-23-42-000-001).
(12) Make sure that the forward passenger/crew door-frame-linings are removed (Ref. AMM TASK 25-23-45-000-005).
(13) Make sure that the lavatory smoke detector is removed (Ref. AMM TASK 26-17-15-000-001).
(14) Make sure that the lavatory door is removed (Ref. AMM TASK 25-45-19-000-001).
(15) Make sure that emergency oxygen container [29WR] is removed (Ref. AMM TASK 35-21-41-000-001).
(16) In the lavatory:
(a) Make sure that the toilet shroud and the seat are 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) Make sure that the toilet drain line behind the lavatory is removed (Ref. AMM TASK 38-30-00-010-002).
(d) If necessary, remove the related waste-water pipe heaters and insulation (Ref. AMM TASK 30-71-53-000-003) or (Ref. AMM D/O 30-71-53-00).
(e) If necessary, remove the related potable-water pipe heaters and insulation (Ref. AMM TASK 30-73-53-000-001) and/or (Ref. AMM TASK 30-73-54-000-002).
(17) 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 25-41-41-865-065-A ** ON A/C NOT FOR ALL

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
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-HOT WATER-A	1MB	F02
2000VU	LAV FWD & MID-OCCUPIED	1WJ	F01
2000VU	LIGHT-LAV	1LQ	J01
2001VU	WATER SYS-QUANT-IND	1MA	B06
2001VU	POT/WASTE WIP-HEATER-CTL	32DW	D02

4. Procedure
Subtask 25-41-41-210-056-A ** ON A/C NOT FOR ALL

A. Preparation for Installation
(1) If necessary, remove the safety barrier(s).
(2) Remove the remaining sealant as follows:
(a) Clean the component interfaces and the adjacent area.
(b) If necessary, remove the remaining sealant from the floor panel and the attached components with the SCRAPER - NON METALLIC.
(c) If necessary, use Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) , Non Aqueous Cleaner_- Methyl-Ethyl-Ketone - (Material No.08BBF1) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that the parts retained from the removed component are clean and in the correct condition.
(5) 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:

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

Subtask 25-41-41-420-126-A ** ON A/C NOT FOR ALL

B. Assembly of the Lavatory

WARNING: YOU MUST MAKE SURE THAT YOU CAN HOLD THE COMPONENT BEFORE YOU REMOVE/INSTALL IT. THE COMPONENT IS HEAVY. IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.

(1) For the assembly of the lavatory, refer to CMM 254120.

Subtask 25-41-41-420-127-A ** ON A/C NOT FOR ALL

C. Installation of the Lower Attachments

LOWER ATTACHMENTS ** 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 new AIPC 25-44-40-20-999 PACKINGS (7) and the bushes (8) in position.
(3) If the shim plates (6) are removed, install them as recorded during the removal procedure.

CAUTION: WHEN YOU MOVE A HEAVY COMPONENT, DO NOT PUSH IT ALONG THE CABIN FLOOR OR LET IT RUB AGAINST THE FLOOR. IF YOU DO, YOU CAN CAUSE DAMAGE TO THE CABIN FLOOR AND/OR THE COMPONENT.

(4) Put the lavatory module in position.
(5) Install the bushes (5) and (4).
(6) If necessary, turn the bushes (5) and (4) clockwise or counterclockwise until it is possible to install the bolts (1).
(7) If the washers (3) and (2) are removed, install them.
(8) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the threads of the bolts (1).
(9) Install the bolts (1).
(10) TORQUE the bolts (1) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )

.
(11) Apply Corrosion Preventive Compound-Heavy Duty Hard Film - (Material No.12ACB1) to the heads of the bolts (1).
(12) In lateral avionics-compartment LH at FR16, if the washer (9) is removed, put and hold it in position.
(13) Apply Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the thread of the bolt (11).
(14) Install the washer (10) and the bolt (11).
(15) TORQUE the bolt (11) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )

.
(16) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the inner part of the angle plate (14).
(17) Put the angle plate (14) in position and install the washers (13) and the screws (12).
(18) Tighten the screws (12).
(19) Apply a bead of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) around the edges of the angle plate (14) and the heads of the screws (12).

Subtask 25-41-41-420-128-A ** ON A/C NOT FOR ALL

D. Installation of the Door Sill

DOOR SILL ** ON A/C NOT FOR ALL

(1) If the spacer (3) is removed, install it.
(2) Apply Non Hardening Jointing Putty-Medium Temp. Area Chromate Free - (Material No.06LCB1) to the threads of the screws (1).
(3) Put the door sill (2) in position and install the screws (1).
(4) TORQUE the screws (1) to between 0.40 and 0.32 m.daN (35.40 and 28.32 lbf.in )

.
(5) Apply Polysulfide Sealant-Low Adhesion Brushable - (Material No.06AEA1) to the floor pan in the inner part of the lavatory around the door sill (2).
(6) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the door sill (2).

Subtask 25-41-41-420-129-A ** ON A/C NOT FOR ALL

E. Installation of the Upper Attachments

UPPER ATTACHMENTS ** 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 tie-rods (1) in position on the aircraft structure and install the quick-release pins (2).

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.

(3) If necessary, adjust the tie-rods (1) as follows:

NOTE: The tie-rod is adjustable in the range of +/- 12.7 mm (0.50 in.).

(a) Cut and discard the lockwire.
(b) Loosen the locknuts (5).
(c) Turn the tie-rods (1) clockwise or counterclockwise until you can install the quick-release pins (3).
(d) Tighten the locknuts (5) and safety them with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - (Ref. AMM TASK 20-11-11-911-001).
(4) Put the tie-rod ends (4) in position on the lavatory and install the quick-release pins (3).
(5) Make sure that the tie-rod ends (4) are safetied.

Subtask 25-41-41-420-130-A ** ON A/C NOT FOR ALL

F. Installation of the Ceiling Supports (if removed)

CEILING SUPPORTS ** 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 support (4) in position and install the washers (10) and the bolts (9).
(3) Tighten the bolts (9).
(4) Put the supports (5) and (3) in position and install the bolts (1) and the nuts (2).
(5) Tighten the nuts (2).
(6) Carefully put the plate (6) in position and install the washers (8) and the screws (7).
(7) Tighten the screws (7).

Subtask 25-41-41-420-131-C ** ON A/C NOT FOR ALL

G. Installation of the Water Connections

WATER CONNECTIONS ** ON A/C NOT FOR ALL

WARNING: DO NOT DO WORK ON THE WASTE WATER 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.

(1) When you connect/install the components, refer to the match marks made during the removal procedure.
Connect the potable water connection as follows:

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

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).

(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Make sure that the line end-fittings (4) are serviceable.
(c) Put the hose (1) in position.
(d) Put the potable water hose (2) in position and connect the nut (5) to the end fitting of the tube (6).
(e) Make sure that the potable water hose (2) is not twisted.
(f) TORQUE the nut (5) to between 5.90 and 5.40 m.daN (43.51 and 39.82 lbf.ft )

.
(2) Connect the waste-water drain connection as follows:

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

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

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

(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the clamp (8) in position on the waste-water drain hose (7).
(c) Connect the waste-water drain hose (7) to the waste-water drain tube (9).
(d) Move the clamp (8) along the waste-water drain hose (7) and measure dimension A. Dimension A must be 5 mm (0.1969 in.) from the end of the waste-water drain hose (7).
(e) TORQUE the clamp (8) to between 0.28 and 0.22 m.daN (24.78 and 19.47 lbf.in )

.
(3) Install the vacuum waste connection as follows:

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).

(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Put the sleeves (13) in position on the vacuum waste hose (14).
(c) Apply Mineral Oil base Grease-General Purpose Medium Temp. - (Material No.03FBB1) to the new AIPC 38-31-81-40-050 PACKING (11).
(d) Put the O-rings (11) in position on the vacuum waste hose (14) and the vacuum waste tubes (10) and (15).
(e) Put the vacuum waste hose (14) in position on the vacuum waste tubes (10) and (15).
(f) Move the sleeves (13) to the center position between the vacuum waste hose (14) and the vacuum waste tubes (10) and (15).
(g) Install the clamps (12).
(4) Connect the bonding strap (18) as follows:
(a) Release the bonding strap (18) from the lavatory structure.
(b) Connect the bonding strap (18) and install the washer(s) (17) and the screw (16).
(c) If the nut (19) is removed, install it.
(d) Do the bonding (Ref. AMM TASK 20-28-00-912-802).
(e) Torque the screw (16) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )

Subtask 25-41-41-420-132-B ** ON A/C NOT FOR ALL

H. Installation of the Air Connections

AIR 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) Connect the air-extraction hose (1) as follows:
(a) If the tube (3) is safetied to the aircraft structure, release it.
(b) If the air-extraction hose (1) is safetied to the lavatory structure, release it.
(c) Remove the PLUG-BLANKING from each disconnected line end.
(d) Make sure that the line ends are clean and clear.
(e) Put the clamp (2) in position on the air-extraction hose (1).
(f) Connect the air-extraction hose (1) to the tube (3).
(g) Move the air-extraction hose (1) along the tube (3) and measure dimension D. Dimension D must be 28 mm (1.1024 in.).
(h) Move the clamp (2) along the air-extraction hose (1) and measure dimension A. Dimension A must be 5 mm (0.1969 in.) from the end of the air-extraction hose (1).
(i) TORQUE the clamp (2) to between 0.28 and 0.22 m.daN (24.78 and 19.47 lbf.in )

.
(3) Connect the ventilation hose (4) as follows:
(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Make sure that the line ends are clean and clear.
(c) Put the clamp (5) in position on the ventilation hose (4).
(d) Connect the ventilation hose (4) to the tube (6).
(e) TORQUE the clamp (5) to between 0.28 and 0.22 m.daN (24.78 and 19.47 lbf.in )

Subtask 25-41-41-420-133-A ** ON A/C NOT FOR ALL

I. Installation of the Electrical Connections

ELECTRICAL CONNECTIONS ** ON A/C NOT FOR ALL

(1) On the lavatory wall, connect electrical connector 2791VC-A (5) as follows:
(a) Release the electrical connector (5) from the aircraft structure.
(b) Remove the CAP-BLANKING from each electrical connector and receptacle.
(c) Make sure that all the electrical connections are clean and in the correct condition.
(d) Connect the electrical connector (5).
(2) On the lavatory ceiling, connect electrical connector 2733VC-A (6) as follows:
(a) Release the receptacle of the electrical connector (6) from the lavatory structure.
(b) Release the electrical connector (6) from the aircraft structure.
(c) Remove the CAP-BLANKING from each electrical connector and receptacle.
(d) Make sure that all the electrical connections are clean and in the correct condition.
(e) Connect the electrical connector (6).
(3) On the lavatory outboard wall (1), connect electrical connector 7200VC-A (7) as follows:
(a) Release the electrical connector (7) from the aircraft structure.
(b) Remove the CAP-BLANKING from each electrical connector and receptacle.
(c) Make sure that all the electrical connections are clean and in the correct condition.
(d) Connect the electrical connector (7).
(e) Engage the spring clips (3) into the catches (4) to install the access panel (2).

NOTE: The spring clips hold the access panel in position.

Subtask 25-41-41-420-134-A ** ON A/C NOT FOR ALL

J. Installation of the Cockpit Door and the Lavatory Equipment
(1) In the lavatory:
(a) Install the toilet drain line behind the lavatory (Ref. AMM TASK 38-30-00-410-002).
(b) Install the toilet assembly (Ref. AMM TASK 38-31-41-400-001).
(c) Do not install the toilet shroud at this time.
(2) Install the lavatory door (Ref. AMM TASK 25-45-19-400-001).
(3) Install emergency oxygen container [29WR] (Ref. AMM TASK 35-21-41-400-001).
(4) Install the lavatory smoke detector (Ref. AMM TASK 26-17-15-400-001).
(5) Install the cockpit door (Ref. AMM TASK 52-51-11-400-001).

Subtask 25-41-41-865-066-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
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-HOT WATER-A	1MB	F02
2000VU	LAV FWD & MID-OCCUPIED	1WJ	F01
2000VU	LIGHT-LAV	1LQ	J01
2001VU	WATER SYS-QUANT-IND	1MA	B06
2001VU	POT/WASTE WIP-HEATER-CTL	32DW	D02

Subtask 25-41-41-861-064-A ** ON A/C NOT FOR ALL

L. Energize the CIDS (Ref. AMM TASK 23-73-00-861-001).

Subtask 25-41-41-942-062-A ** ON A/C NOT FOR ALL

M. Safety Precautions
(1) Remove the WARNING NOTICE(S).

Subtask 25-41-41-710-071-A ** ON A/C NOT FOR ALL

N. Operational Test
(1) Do the operational test of these potable water/waste-water systems/units:

Potable water-distribution system (Ref. AMM TASK 38-12-00-710-002)
Potable-water quantity indicating-system (Ref. AMM TASK 38-13-00-710-001)
Potable water heater (Ref. AMM TASK 38-12-00-710-004)
Waste-water drain system (Ref. AMM TASK 38-32-00-710-002)
Vacuum toilet unit (Ref. AMM TASK 38-31-00-710-009).

Make sure that there are no leaks.
(2) Do the functional test of the lavatory air-extraction system (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/units:

CIDS (Ref. AMM TASK 23-73-00-740-005)
Cabin and flight crew interphone-system (Ref. AMM D/O 23-73-00-71)
Passenger call system (Ref. AMM TASK 23-73-00-710-024)
Passenger Address (PA) system (Ref. AMM TASK 23-73-00-710-022)
Lavatory smoke-detection system (Ref. AMM TASK 26-17-00-710-001)
Lavatory lighting (Ref. AMM TASK 33-24-00-710-001)
Cabin emergency lighting (Ref. AMM TASK 33-51-00-710-007)
Lavatory lighted signs (Ref. AMM TASK 33-26-00-710-001)
Cabin attendant work-lights (Ref. AMM TASK 33-27-00-710-001)
Return-to-Seat (RTS) sign (Ref. AMM TASK 23-73-00-710-017)
Passenger emergency-oxygen system (Ref. AMM TASK 35-23-00-710-002).

(5) Do the operational test of the Cockpit Door Locking System (CDLS) (Ref. AMM TASK 52-51-00-710-002).
(6) Do the operational test of the emergency access to make sure that the keypad operates correctly (Ref. AMM TASK 52-51-00-710-003).

Subtask 25-41-41-420-135-A ** ON A/C NOT FOR ALL

O. Installation of the Components after the Test Procedure
(1) Install the water-pipe leak protection as follows:

WATER CONNECTIONS ** ON A/C NOT FOR ALL

(a) Put the clamps (3) in position on the hose (1).
(b) Apply Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) to the mating surfaces.
(c) Connect the hose (1) to the line end-fittings (4).
(d) Move the clamps (3) along the hose (1) and measure dimension A. Dimension A must be 5 mm (0.1969 in.) from the end of the hose (1).
(e) Tighten the clamps (3).

5. Close-up
Subtask 25-41-41-410-088-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the forward utility-area ceiling-panels (Ref. AMM TASK 25-23-42-400-001).
(2) Install the forward passenger/crew door-frame-linings (Ref. AMM TASK 25-23-45-400-006).
(3) If the related potable-water pipe heaters and insulation are removed, install them (Ref. AMM TASK 30-73-53-400-001) and/or (Ref. AMM TASK 30-73-54-400-002).
(4) If the related waste-water pipe heaters and insulation are removed, install them (Ref. AMM TASK 30-71-53-400-003) or (Ref. AMM D/O 30-71-53-40).
(5) Install the toilet shroud and the seat (Ref. AMM TASK 25-45-22-400-001).
(6) Install the FAP (Ref. AMM TASK 23-73-12-400-007).
(7) Install each wall-mounted CAS (Ref. AMM TASK 25-22-41-400-001).
(8) Make sure that the work area is clean and clear of tools and other items.
(9) Close lateral-avionics-compartment access-door 812 (Ref. AMM TASK 52-41-00-410-002).
(10) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(11) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001)

[Rev.10 from 2021] 2026.03.31 23:35:14 UTC