Installation of the Emergency Oxygen Containers

TASK 35-21-41-400-001-A
Installation of the Emergency Oxygen Containers

WARNING: MAKE SURE THAT YOU OBEY THE MANUFACTURER'S INSTRUCTIONS AND NATIONAL HAZARDOUS MATERIAL REGULATIONS WHEN YOU MOVE OR KEEP THIS EQUIPMENT IN STORAGE:

CHEMICAL OXYGEN GENERATORS
PROTECTIVE BREATHING EQUIPMENT
FIXED AND PORTABLE OXYGEN CYLINDERS.

SPECIAL PRECAUTIONS ARE NECESSARY FOR THIS EQUIPMENT.

WARNING: KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES HYDROCARBONS.

WARNING: CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT CONTAMINATION OF THE OXYGEN SYSTEM.

ZONE: 200
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1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	4	ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20
No specific	1	STEPLADDER 1.0 M (3.3 FT)
No specific	AR	WARNING NOTICE(S)
98A25207503000	2	PULLEY ASSEMBLY - SEALING CORD
995000-00	1	TOOL-MANUAL RELEASE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE
231JC, 261KW
261BC
221HW
251AC, 251KC
261VW
262BC
222HW, 262KW
221SW, 222SW
262VW
251JC

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
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 25-23-45-000-002-A	Removal of the Door Frame Linings from the Right Forward Passenger/Crew Door
TASK 25-23-45-000-003-A	Removal of the Door Frame Linings from the Left Aft Passenger/Crew Door
TASK 25-23-45-000-004-A	Removal of the Door Frame Linings from the Right Aft Passenger/Crew Door
TASK 25-23-45-000-005-A	Removal of the Door Frame Linings from the Left Forward Passenger/Crew Door
TASK 25-23-45-400-005-A	Installation of the Door Frame Linings on the Right Aft Passenger/Crew Door
TASK 25-23-45-400-006-A	Installation of the Door Frame Linings on the Left Forward Passenger/Crew Door
TASK 25-23-45-400-007-A	Installation of the Door Frame Linings on the Right Forward Passenger/Crew Door
TASK 25-23-45-400-008-A	Installation of the Door Frame Linings on the Left Aft Passenger/Crew Door
TASK 35-00-00-860-001-A	Special Precautions When Working on a Gaseous Oxygen System
TASK 35-23-00-710-001-A	Operational Check of Manual Mask Release
Installation Position of the Emergency Oxygen Container
Emergency Oxygen Containers - Removal of the Safety Ring
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL
Emergency Oxygen Containers ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 35-21-41-860-050-A ** ON A/C NOT FOR ALL

Subtask 35-21-41-860-050-L ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is(are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221HW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222HW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that door-frame lining panel 262KW is removed (Ref. AMM TASK 25-23-45-000-004).
(7) Make sure that ceiling panels 261BC and 262BC are removed (Ref. AMM TASK 25-23-42-000-002).

Subtask 35-21-41-860-050-Y ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is(are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221HW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222HW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that door-frame lining panel 261KW is removed (Ref. AMM TASK 25-23-45-000-003).
(7) Make sure that door-frame lining panel 262KW is removed (Ref. AMM TASK 25-23-45-000-004).
(8) Make sure that ceiling panels 251AC and 251KC are removed (Ref. AMM TASK 25-23-41-000-001).
(9) Make sure that ceiling panels 261BC and 262BC are removed (Ref. AMM TASK 25-23-42-000-002).

Subtask 35-21-41-860-050-Z ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is(are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221SW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222SW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that door-frame lining panel 262VW is removed (Ref. AMM TASK 25-23-45-000-004).
(7) Make sure that ceiling panels 251AC and 251KC are removed (Ref. AMM TASK 25-23-41-000-001).
(8) Make sure that ceiling panels 261BC and 262BC are removed (Ref. AMM TASK 25-23-42-000-002).

Subtask 35-21-41-860-050-AT ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is(are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221SW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222SW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that ceiling panel 261BC is removed (Ref. AMM TASK 25-23-42-000-002).
(7) Make sure that ceiling panel 251JC is removed (Ref. AMM TASK 25-23-41-000-001).

Subtask 35-21-41-860-050-AY ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you do work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized.
(Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is (are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221SW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222SW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that door-frame lining panel 261VW is removed (Ref. AMM TASK 25-23-45-000-003).
(7) Make sure that door-frame lining panel 262VW is removed (Ref. AMM TASK 25-23-45-000-004).

Subtask 35-21-41-860-050-AZ ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you do work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is(are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221SW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222SW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that door-frame lining panel 261VW is removed (Ref. AMM TASK 25-23-45-000-003).

Subtask 35-21-41-860-050-BK ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you do work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is(are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221SW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222SW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that door-frame lining panel 262VW is removed (Ref. AMM TASK 25-23-45-000-004).
(7) Make sure that ceiling panels 261BC and 262BC are removed (Ref. AMM TASK 25-23-42-000-002).
(8) Make sure that ceiling panel 251JC is removed (Ref. AMM TASK 25-23-41-000-001).

Subtask 35-21-41-860-050-BM ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is(are) in position in the cockpit to tell persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221SW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222SW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that ceiling panels 261BC and 262BC are removed (Ref. AMM TASK 25-23-42-000-002).
(7) Make sure that ceiling panel 251JC is removed (Ref. AMM TASK 25-23-41-000-001).

Subtask 35-21-41-860-050-DD ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Obey the special precautions when you do work on a gaseous oxygen system (Ref. AMM TASK 35-00-00-860-001).
(2) Make sure that the aircraft electrical circuits are energized.
(Ref. AMM TASK 24-41-00-861-002).
(3) Make sure that the WARNING NOTICE(S) is in position in the cockpit to tell the persons not to operate the emergency oxygen system.
(4) Make sure that door-frame lining panel 221SW is removed (Ref. AMM TASK 25-23-45-000-005).
(5) Make sure that door-frame lining panel 222SW is removed (Ref. AMM TASK 25-23-45-000-002).
(6) Make sure that door-frame lining panel 261VW is removed (Ref. AMM TASK 25-23-45-000-003).
(7) Make sure that door-frame lining panel 262VW is removed (Ref. AMM TASK 25-23-45-000-004).
(8) Make sure that ceiling panel 261BC is removed (Ref. AMM TASK 25-23-42-000-002).

Subtask 35-21-41-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
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

4. Procedure
Subtask 35-21-41-560-050-A

A. Preparation for Installation of the Emergency Oxygen Container(s)

Emergency Oxygen Containers - Removal of the Safety Ring

(1) If there is a yellow warning flag on the external side of the emergency oxygen container (1):

Remove the safety ring/pin before you install the emergency oxygen container (1) on the aircraft.

(2) For the emergency oxygen container (1) with a yellow warning flag:
(a) Put the emergency oxygen container (1) on a workbench with the door on top.
(b) Remove the securing tape of the warning flag.

NOTE: The door of the emergency oxygen container can be spring-loaded.

NOTE: You can use the alternate tool with part number 995000.

(3) For the emergency oxygen container (1) without a yellow warning flag:
(a) Put the emergency oxygen container (1) on a workbench with the door on top.

NOTE: The door of the emergency oxygen container can be spring-loaded.

(b) Open the door of the emergency oxygen container (1) with the 995000-00 TOOL-MANUAL RELEASE.

NOTE: You can use the alternate tool with part number 995000.

(c) Make sure that the safety ring/pin is installed on the generator.
(4) For all the emergency oxygen containers (1):
(a) Remove the safety ring/pin from the emergency oxygen container (1):
1 Put the generator (2) in position until you have access to the pull pin (3) and the safety ring/pin (4).
2 Remove the safety ring/pin (4).

WARNING: AFTER YOU INSTALL THE GENERATORS IN THE EMERGENCY OXYGEN CONTAINERS, REMOVE THE SAFETY RINGS OR SAFETY PINS FROM THE GENERATORS. IF YOU DO NOT REMOVE THEM, THE GENERATORS WILL NOT OPERATE.

3 Turn the generator (2) until the eye end of the pull pin (3) points to the door of the emergency oxygen container (1).
4 Make sure that the routing of the lanyards (5) is correct.
5 Make sure that the lanyards (5) and the masks are not damaged.
(b) Close the door of the emergency oxygen container (1):

CAUTION: DO NOT USE TOO MUCH FORCE TO CLOSE THE EMERGENCY OXYGEN CONTAINER. IF YOU USE TOO MUCH FORCE, YOU CAN CAUSE DAMAGE TO THE LATCH MECHANISM. IF THE LATCH MECHANISM DOES NOT ENGAGE EASILY, MAKE SURE THAT THE EQUIPMENT IN THE EMERGENCY OXYGEN CONTAINER IS CORRECTLY INSTALLED.

1 Push the door of the emergency oxygen container (1) that is on the two sides of the test button with your hand to the closed position.
2 Make sure that the latch mechanism is engaged correctly and fully locked into the door assembly.

NOTE: You cannot close the door if the latch mechanism is not aligned with the door assembly.

3 Make sure that you hear a click when the door is fully closed.
4 Make sure that there is no space between the box assembly and the door assembly.

Subtask 35-21-41-420-050-A ** ON A/C NOT FOR ALL

B. Install the emergency oxygen containers in the passenger service channels and the service channel of the aft utility area.

NOTE: During installation, make sure that the hinge of the oxygen container is adjacent to the window side of the fuselage. For the emergency oxygen container in the AFT utility area make sure that the hinge is installed opposite to the attendant seat.

NOTE: The installation procedure is the same for all the emergency oxygen containers in the service channels.

(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Put the emergency oxygen container (3) in position.
(4) Engage one side of the emergency oxygen container (3) on the rail (2).
(5) Connection of the electrical connectors:

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

NOTE: Use the roller along the hose sections in both directions. Make sure that the joints of the hose sections do not align with the joints between the panels.

(8) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container door.

Subtask 35-21-41-420-050-D ** ON A/C NOT FOR ALL

B. Installation of the Emergency Oxygen Containers in the Passenger Service Channels

NOTE: The installation procedure is the same for all the emergency oxygen containers in the passenger service channels.

(1) Make sure that the emergency oxygen container to be installed has the correct part number.
(2) During installation, make sure that the hinge of the emergency oxygen container is adjacent to the outboard side of the fuselage.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) If removed, install the clamping block (8):

NOTE: The clamping block is installed only on the outboard rail.

(a) Temporarily engage the emergency oxygen container (3) into the rails (2).
(b) Adjust the emergency oxygen container (3) to its installation position.
(c) Mark installation position of the clamping block (8) on the rails (2).
(d) Remove the emergency oxygen container (3).
(e) Put the clamping block (8) in the marked position.
(f) Tighten the screw (9).
(6) Engage the outboard side of the emergency oxygen container (3) with the rails (2).
(7) Connect the electrical connector(s):
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(c) Connect the electrical connectors (4) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(8) Lift and engage the emergency oxygen container (3) with the rails (2).
(9) Install the hose sections (1) with the 98A25207503000 PULLEY ASSEMBLY - SEALING CORD tool.

NOTE: We recommend you to use the roller along the hose sections in two directions. It is important that the joints of the hose sections do not align with the joints between the panels.

(10) Make sure that the work area is clean and clear of tools and other items.
(11) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.

Subtask 35-21-41-420-051-A ** ON A/C NOT FOR ALL

C. Installation of the Emergency Oxygen Container(s) in the Passenger/Crew Door Frame(s)

NOTE: The installation procedure is the same for all the emergency oxygen containers installed in the door frames.

(1) Make sure that the emergency oxygen container to be installed has the correct P/N.
(2) During installation, make sure that the hinge of the emergency oxygen container is adjacent to the inboard from the passenger/crew door frames.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) Engage the emergency oxygen container (13) with the support assembly (14).
(6) Align the supports (12) in position with the emergency oxygen container (13) and install the washers (16) and the screws (17).
(7) Tighten the screws (18).
(8) Connect the electrical connector(s):

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

Subtask 35-21-41-420-051-D ** ON A/C NOT FOR ALL

C. Installation of the Emergency Oxygen Container(s) in the Passenger/Crew Door Frame(s)

NOTE: The installation procedure is the same for all the emergency oxygen containers installed in the door frames.

(1) Make sure that the emergency oxygen container to be installed has the correct P/N.
(2) During installation, make sure that the hinge of the oxygen container is adjacent to the top side of the fuselage.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) Put the oxygen container (6) in position.
(6) Engage the oxygen container (6) in the support assembly (7).
(7) Put the support (5) in position and install the washers (9) and the screws (10).
(8) Tighten the screws (11).
(9) Connection of the electrical connectors

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

Subtask 35-21-41-420-052-G ** ON A/C NOT FOR ALL

D. Installation of the Emergency Oxygen Container in the Lavatory.
(1) Make sure that the emergency oxygen container to be installed has the correct P/N.
(2) Position of the emergency oxygen container.
(a) In the lavatory A:

During installation, make sure that the hinge of the emergency oxygen container is at the lower side of the container.

(b) In all other lavatories:

During installation, make sure that the hinge of the emergency oxygen container is at the lavatory seat side.

NOTE: The installation procedure is the same for all the emergency oxygen containers installed in the lavatories.

(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) Put the emergency oxygen container (11) in position and install the washers (6) and the screws (5).
(6) Connect the electrical connectors:

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Connect the electrical connectors (7) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(7) For the lavatory A only:
(a) Put the O2-box cover color-panel (21) in its installing position.
(b) Install the screws (19) and the washers (20) at the O2-box cover color-panel (21).
(c) Make sure that the dowels (22) are in the correct position.
(8) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.

Subtask 35-21-41-420-052-H ** ON A/C NOT FOR ALL

D. Installation of the Emergency Oxygen Containers in the Lavatories
(1) In all lavatories but not in the lavatory A:
(a) During installation, make sure that the hinge of the emergency oxygen container is on the lavatory seat side.
(2) In the lavatory A:
(a) During installation, make sure that the hinge of the emergency oxygen container is on the lower side of the container.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) For lavatories D, E and H:
(a) Make sure that the STEPLADDER 1.0 M (3.3 FT) is in front of the lavatories.
(6) For all of the lavatories:
(a) Put the emergency oxygen container (11) in position and install the washers (6) and the screws (5).
(b) Connect the electrical connectors:

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

1 Remove the CAP-BLANKING from each electrical connector and receptacle.
2 Make sure that all the electrical connections are clean and in the correct condition.
3 Connect the electrical connectors (7) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(7) In lavatory A:
(a) Install the emergency-oxygen container-cover color-panel (21).
(b) Install the screws (19) and the washers (20) at the emergency-oxygen container-cover color-panel (21).
(c) Make sure that the dowels (22) are in the correct position.
(d) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.
(8) Make sure that the work area is clean and clear of tools and other items.

Subtask 35-21-41-420-052-I ** ON A/C NOT FOR ALL

D. Installation of the Emergency Oxygen Containers in the Lavatories
(1) In all lavatories but not in the lavatory A:
(a) During installation, make sure that the hinge of the emergency oxygen container is on the lavatory seat side.
(2) In the lavatory A:
(a) During installation, make sure that the hinge of the emergency oxygen container is on the lower side of the container.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) In all lavatories but not in the lavatory A:
(a) Put a STEPLADDER 1.0 M (3.3 FT) in front of the lavatories.
(6) Put the oxygen container (11) in installation position and install the washers (6) and the screws (5).
(7) Connect the electrical connector(s):

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Connect the electrical connectors (4) and/or (7) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(8) In the lavatory A only:
(a) Install the emergency-oxygen-container cover color-panel (21).
(b) Install the washers (20) and the screws (19) on the emergency-oxygen-container cover color-panel (21).
(c) Make sure that the dowels (22) are in the correct position.
(d) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.
(9) Make sure that the work area is clean and clear of tools and other items.

Subtask 35-21-41-420-052-AE ** ON A/C NOT FOR ALL

D. Installation of the Emergency Oxygen Containers in the Lavatories
(1) Make sure that the emergency oxygen container to be installed has the correct P/N.
(2) In the lavatory A:
(a) During installation, make sure that the hinge of the emergency oxygen container is on the lower side of the container.
(3) In all the other lavatories:
(a) During installation, make sure that the hinge of the emergency oxygen container is on the lavatory seat side.
(b) Put a STEPLADDER 1.0 M (3.3 FT) in front of the lavatories.
(4) Make sure that the parts retained from the removed component are clean and in the correct condition.
(5) Do an inspection of the component interfaces and the adjacent area.
(6) For all of the lavatories:

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(a) Put the oxygen container (15) in position and install the washers (12) and the screws (13).
(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 (14) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(e) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.
(f) Make sure that the work area is clean and clear of tools and other items.
(7) In the lavatory A only:
(a) Install the emergency-oxygen container-cover color-panel (18).
(b) Install the screws (17) and the washers (16) on the emergency-oxygen container-cover color-panel (18).
(c) Make sure that the dowels (19) are in the correct position.
(d) Make sure that the work area is clean and clear of tools and other items.

Subtask 35-21-41-420-052-AF ** ON A/C NOT FOR ALL

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(c) Connect the electrical connectors (7) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(7) For the lavatory A:
(a) Make sure that the nut-clips (20) are in the correct position.
(b) Install the emergency-oxygen container-cover color-panel (21).
(c) Make sure that the dowels (22) are in the correct position.
(d) Install the screws (19) on the emergency-oxygen container-cover color-panel (21).
(e) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.
(f) Make sure that the work area is clean and clear of tools and other items.
(8) For other lavatories:
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Remove the STEPLADDER 1.0 M (3.3 FT).

Subtask 35-21-41-420-052-AK ** ON A/C NOT FOR ALL

D. Installation of the Emergency Oxygen Containers in the Lavatories
(1) For the lavatory A:
(a) During installation, make sure that the hinge of the emergency oxygen container is on the lower side of the container.
(2) For the smart lavatories DS, ES, FS, HS, DC, EC and LC:
(a) Make sure that the panel (40) is lowered.
(b) During installation, make sure that the hinge of the emergency oxygen container is on the lavatory seat side.
(3) For the smart lavatory GS:
(a) Make sure that the panel (40) is lowered.
(b) During installation, make sure that the hinge of the emergency oxygen container is on the mirror side.
(4) For other lavatories, if applicable:
(a) Make sure that the STEPLADDER 1.0 M (3.3 FT) is in front of the lavatory.
(b) During installation, make sure that the hinge of the emergency oxygen container is on the lavatory seat side.
(5) Make sure that the parts retained from the removed component are clean and in the correct condition.
(6) Do an inspection of the component interfaces and the adjacent area.
(7) Put the emergency oxygen container (11) in installation position and install the washers (6) and the screws (5).
(8) Connect the electrical connector(s):
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(c) Connect the electrical connectors (7) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(9) For the lavatory A:
(a) Make sure that the nut-clips (20) are in the correct position.
(b) Install the emergency-oxygen-container cover color-panel (21).
(c) Make sure that the dowels (22) are in the correct position.
(d) Install the screws (19) on the emergency-oxygen-container cover color-panel (21).
(e) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.
(10) For all the smart lavatories DS, ES, FS, GS, HS, DC, EC and LC:
(a) Close the panel (40) and install the washers (39) and the screws (38).
(b) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.
(11) For other lavatories, if applicable:
(a) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) at each side of the emergency oxygen container-door.
(b) Remove the STEPLADDER 1.0 M (3.3 FT).
(12) Make sure that the work area is clean and clear of tools and other items.

Subtask 35-21-41-420-059-A ** ON A/C NOT FOR ALL

E. Installation of the Emergency Oxygen Containers in the Service Channel of the Aft Utility Area

CAUTION: IF THE EMERGENCY OXYGEN CONTAINER IS INSTALLED NEAR A CURTAIN RAIL, MAKE SURE THAT THE EMERGENCY OXYGEN CONTAINER AND THE CURTAIN RAIL ARE INSTALLED CORRECTLY. IF THEY ARE NOT INSTALLED CORRECTLY, IT IS POSSIBLE THAT THE MASKS WILL NOT FALL OUT CORRECTLY IN AN EMERGENCY.

(1) Make sure that the emergency oxygen container with the correct part number is installed.
(2) Clean the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) During installation, make sure that the hinge of emergency oxygen container 30WR is installed on the left side of the aircraft.
(6) During installation, make sure that the hinge of emergency oxygen container 33WR is installed on the right side of the aircraft.
(7) Put the emergency oxygen container (35) in position on the panel (36) and install the washers (34) and (31) and the screws (32).
(8) Engage one side of the panel (36) in the rail (30).
(9) Connect the electrical connectors as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(b) Connect the electrical connectors (37) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(10) Lift and engage the panel (36) in the rail (30).
(11) Use the 98A25207503000 PULLEY ASSEMBLY - SEALING CORD and install the hose sections (33).

NOTE: We recommend that you use the roller along the hose sections in the two directions. The joints of the hose sections cannot align with the joints between the panels.

(12) Make sure that the work area is clean and clear of tools and other items.
(13) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) on each side of the emergency oxygen-container door.

Subtask 35-21-41-420-059-C ** ON A/C NOT FOR ALL

E. Installation of the Emergency Oxygen Containers in the Service Channel of the Aft Utility Area

(1) Make sure that the emergency oxygen container with the correct part number is installed.
(2) Clean the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) During installation, make sure that the hinge of emergency oxygen container 30WR is installed on the left side of the aircraft.
(6) During installation, make sure that the hinge of emergency oxygen container 33WR is installed on the right side of the aircraft.
(7) Put the emergency oxygen container (25) in position and install the washers (24) and (22) and the screws (23).
(8) Engage one side of the panel (26) in the rail (20).
(9) Connect the electrical connectors as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(b) Connect the electrical connectors (27) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(10) Make sure that the work area is clean and clear of tools and other items.
(11) Lift and engage the panel (26) in the rail (20).
(12) Use the 98A25207503000 PULLEY ASSEMBLY - SEALING CORD and install the hose sections (21).

NOTE: We recommend that you use the roller along the hose sections in the two directions. The joints of the hose sections cannot align with the joints between the panels.

(13) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) on each side of the emergency oxygen-container door.

Subtask 35-21-41-420-059-D ** ON A/C NOT FOR ALL

E. Installation of the Emergency Oxygen Containers in the Service Channel of the Aft Utility Area
(1) Make sure that the emergency oxygen container with the correct part number is installed.
(2) Clean the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.

(5) During installation, make sure that the hinge of emergency oxygen container 33WR is installed on the right side of the aircraft.
(6) Put the emergency oxygen container (35) in position on the panel (36) and install the washers (34) and (31) and the screws (32).
(7) Engage one side of the panel (36) in the rail (30).
(8) Connect the electrical connectors as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(b) Connect the electrical connectors (37) with the ELEC CONTACTS INSERTION EXTRACTION TOOL M15570-20.
(9) Lift and engage the panel (36) in the rail (30).
(10) Use the 98A25207503000 PULLEY ASSEMBLY - SEALING CORD and install the hose sections (33).

NOTE: We recommend that you use the roller along the hose sections in the two directions. The joints of the hose sections cannot align with the joints between the panels.

(11) Make sure that the work area is clean and clear of tools and other items.
(12) Make sure that there is a minimum clearance of 2.0 +0.0 mm or -0.5 mm (0.0787 +0.0000 in. or -0.0197 in.) on each side of the emergency oxygen-container door.

Subtask 35-21-41-865-053-A

F. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
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

Subtask 35-21-41-710-050-A

G. Operational Test
(1) Do an operational test of the emergency oxygen system (Ref. AMM TASK 35-23-00-710-001).

5. Close-up
Subtask 35-21-41-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install door-frame lining panel 221HW (Ref. AMM TASK 25-23-45-400-006).

Subtask 35-21-41-410-050-E ** ON A/C NOT FOR ALL

A. Close Access
(1) Install door-frame lining panel 221HW (Ref. AMM TASK 25-23-45-400-006).
(2) Install door-frame lining panel 222HW (Ref. AMM TASK 25-23-45-400-007).
(3) Install door-frame lining panel 262KW (Ref. AMM TASK 25-23-45-400-005).

Subtask 35-21-41-410-050-H ** ON A/C NOT FOR ALL

A. Close Access
(1) Install door-frame lining panel 221SW (Ref. AMM TASK 25-23-45-400-006).
(2) Install door-frame lining panel 222SW (Ref. AMM TASK 25-23-45-400-007).
(3) Install ceiling panels 251AC and 251KC (Ref. AMM TASK 25-23-41-400-001).
(4) Install door-frame lining panel 262VW (Ref. AMM TASK 25-23-45-400-005).

Subtask 35-21-41-410-050-P ** ON A/C NOT FOR ALL

Subtask 35-21-41-410-050-R ** ON A/C NOT FOR ALL

A. Close Access
(1) Install door-frame lining panel 221SW (Ref. AMM TASK 25-23-45-400-006).
(2) Install door-frame lining panel 222SW (Ref. AMM TASK 25-23-45-400-007).
(3) Install door-frame lining panel 261VW (Ref. AMM TASK 25-23-45-400-008).
(4) Install door-frame lining panel 262VW (Ref. AMM TASK 25-23-45-400-005).

Subtask 35-21-41-410-050-T ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install door-frame lining panel 221SW (Ref. AMM TASK 25-23-45-400-006).
(3) Install door-frame lining panel 222SW (Ref. AMM TASK 25-23-45-400-007).
(4) Install ceiling panel 261BC (Ref. AMM TASK 25-23-42-400-002).
(5) Install ceiling panel 251JC (Ref. AMM TASK 25-23-41-400-001).

Subtask 35-21-41-410-050-X ** ON A/C NOT FOR ALL

Subtask 35-21-41-410-050-AH ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install door-frame lining panel 221SW (Ref. AMM TASK 25-23-45-400-006).
(3) Install door-frame lining panel 222SW (Ref. AMM TASK 25-23-45-400-007).
(4) Install door-frame lining panel 262VW (Ref. AMM TASK 25-23-45-400-005).
(5) Install ceiling panels 261BC and 262BC (Ref. AMM TASK 25-23-42-400-002).
(6) Install ceiling panel 251JC (Ref. AMM TASK 25-23-41-400-001).

Subtask 35-21-41-410-050-AN ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install door-frame lining panel 221SW (Ref. AMM TASK 25-23-45-400-006).
(3) Install door-frame lining panel 222SW (Ref. AMM TASK 25-23-45-400-007).
(4) Install ceiling panels 261BC and 262BC (Ref. AMM TASK 25-23-42-400-002).
(5) Install ceiling panel 251JC (Ref. AMM TASK 25-23-41-400-001).

Subtask 35-21-41-410-050-CG ** ON A/C NOT FOR ALL

A. Close Access
(1) Install door-frame lining panel 221SW (Ref. AMM TASK 25-23-45-400-006).
(2) Install door-frame lining panel 222SW (Ref. AMM TASK 25-23-45-400-007).
(3) Install door-frame lining panel 261VW (Ref. AMM TASK 25-23-45-400-008).
(4) Install door-frame lining panel 262VW (Ref. AMM TASK 25-23-45-400-005).
(5) Install ceiling panel 261BC (Ref. AMM TASK 25-23-42-400-002).

Subtask 35-21-41-410-051-E ** ON A/C NOT FOR ALL

B. Close Access
(1) Install ceiling panels 261BC and 262BC (Ref. AMM TASK 25-23-42-400-002).

Subtask 35-21-41-410-051-H ** ON A/C NOT FOR ALL

B. Close Access
(1) Install ceiling panel 231JC (Ref. AMM TASK 25-23-42-400-002).
(2) Install ceiling panels 261BC and 262BC (Ref. AMM TASK 25-23-42-400-002).

Subtask 35-21-41-862-050-A

C. Put the aircraft back to its initial configuration.
(1) In the cockpit, on the OXYGEN section of overhead panel 21VU:
(a) Remove the WARNING NOTICE(S).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 06:04:07 UTC