DOC AIRBUS | AMM A320FInstallation of the Oxygen-System Test Port
TASK 35-13-41-400-801-A
Installation of the Oxygen-System Test Port
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 35-13-41-860-051-A ** ON A/C NOT FOR ALL
Subtask 35-13-41-420-050-A ** ON A/C NOT FOR ALL
Subtask 35-13-41-080-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:04:41 UTC
Installation of the Oxygen-System Test Port
WARNING:
CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT CONTAMINATION OF THE OXYGEN SYSTEM.
WARNING:
KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES HYDROCARBONS.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.14CCB6) | Testing Medium-Leak Detection - Oxygen System |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 125 | LATERAL AVIONIC COMPARTMENT |
| 812 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 6 | FILTER | AIPC 35-13-41-01-030 |
| 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 35-00-00-860-001-A | Special Precautions When Working on a Gaseous Oxygen System |
Oxygen-System Test PortSubtask 35-13-41-860-051-A ** 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 ACCESS PLATFORM 2M (6 FT) is in position at access door 812.
(3) Make sure that access door 812 is open.
(4) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(5) Make sure that the WARNING NOTICE(S) is in position in the cockpit to tell persons not to operate the crew oxygen system.
(6) Make sure that the valve of the oxygen storage cylinder (5750HM) is closed.
(7) Make sure that the WARNING NOTICE(S) is in position to tell persons not to open the valve of the oxygen storage cylinder (5750HM).
Subtask 35-13-41-865-051-A ** ON A/C NOT FOR ALL (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 ACCESS PLATFORM 2M (6 FT) is in position at access door 812.
(3) Make sure that access door 812 is open.
(4) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(5) Make sure that the WARNING NOTICE(S) is in position in the cockpit to tell persons not to operate the crew oxygen system.
(6) Make sure that the valve of the oxygen storage cylinder (5750HM) is closed.
(7) Make sure that the WARNING NOTICE(S) is in position to tell persons not to open the valve of the oxygen storage cylinder (5750HM).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | OXYGEN/CREW/OXY/SPLY | 1HT | HA01 |
Subtask 35-13-41-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Oxygen-System Test Port
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Install a new AIPC 35-13-41-01-030 FILTER (6) in the fitting (5) with a PUNCH - CENTER.
(3) From the second thread of the coupling (7), wind between one and one and a half layers of TAPE- TEFLON.
(4) Install the coupling (7) in the fitting (5).
(5) TORQUE the coupling (7) to between 2 and 1.4 m.daN (14.75 and 10.32 lbf.ft )
.
(6) Put the fitting (5) and coupling (7) in position.
(7) Install the screws (1) and nuts (2) and tighten them.
(8) Make sure that the line end-fitting is serviceable.
(9) Remove the PLUG - BLANKING, APPROVED FOR USE WITH OXYGEN and the BAG - VINYL from the disconnected line end(s).
(10) Put the pipe (3) in position.
(11) TORQUE the nut (4) to between 2 and 1.5 m.daN (14.75 and 11.06 lbf.ft ).
Subtask 35-13-41-790-050-A ** 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) Install a new AIPC 35-13-41-01-030 FILTER (6) in the fitting (5) with a PUNCH - CENTER.
(3) From the second thread of the coupling (7), wind between one and one and a half layers of TAPE- TEFLON.
(4) Install the coupling (7) in the fitting (5).
(5) TORQUE the coupling (7) to between 2 and 1.4 m.daN (14.75 and 10.32 lbf.ft )
. (6) Put the fitting (5) and coupling (7) in position.
(7) Install the screws (1) and nuts (2) and tighten them.
(8) Make sure that the line end-fitting is serviceable.
(9) Remove the PLUG - BLANKING, APPROVED FOR USE WITH OXYGEN and the BAG - VINYL from the disconnected line end(s).
(10) Put the pipe (3) in position.
(11) TORQUE the nut (4) to between 2 and 1.5 m.daN (14.75 and 11.06 lbf.ft )
. B. Leak Test of the Connections in the Test Line
(1) Apply oxygen leak detector Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to all the connections that were disconnected or loosened.
(2) Slowly and fully open the valve of the oxygen storage cylinder (5750HM).
(3) In the cockpit, on the overhead control and indicator panel 21VU, push the OXYGEN/CREW SUPPLY pushbutton switch (the OFF legend goes off).
(4) Examine the connections to make sure that there are no leaks.
(5) Fully close the valve of the oxygen storage cylinder (5750HM).
(6) Bleed the crew oxygen system:
(a) On an oxygen-mask stowage box, push and hold the PRESS TO TEST AND RESET control button and at the same time, push and hold the PRESS TO TEST/EMERGENCY knob on the mask regulator until the system is empty.
(b) On the overhead control and indicator panel 21VU, release the OXYGEN/CREW SUPPLY pushbutton switch (the OFF legend comes on).
(c) On the overhead control and indicator panel 21VU, put a WARNING NOTICE(S) in position to tell persons not to push the OXYGEN/CREWSUPPLY pushbutton switch.
(7) Remove the oxygen leak detector Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) from the connections with a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) .
5. Close-up(1) Apply oxygen leak detector Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to all the connections that were disconnected or loosened.
(2) Slowly and fully open the valve of the oxygen storage cylinder (5750HM).
(3) In the cockpit, on the overhead control and indicator panel 21VU, push the OXYGEN/CREW SUPPLY pushbutton switch (the OFF legend goes off).
(4) Examine the connections to make sure that there are no leaks.
(5) Fully close the valve of the oxygen storage cylinder (5750HM).
(6) Bleed the crew oxygen system:
(a) On an oxygen-mask stowage box, push and hold the PRESS TO TEST AND RESET control button and at the same time, push and hold the PRESS TO TEST/EMERGENCY knob on the mask regulator until the system is empty.
(b) On the overhead control and indicator panel 21VU, release the OXYGEN/CREW SUPPLY pushbutton switch (the OFF legend comes on).
(c) On the overhead control and indicator panel 21VU, put a WARNING NOTICE(S) in position to tell persons not to push the OXYGEN/CREWSUPPLY pushbutton switch.
(7) Remove the oxygen leak detector Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) from the connections with a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) .
Subtask 35-13-41-080-050-A ** ON A/C NOT FOR ALL
A. Installation of the cap
(1) Install the cap on the coupling (7).
Subtask 35-13-41-865-052-A ** ON A/C NOT FOR ALL (1) Install the cap on the coupling (7).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 35-13-41-410-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | OXYGEN/CREW/OXY/SPLY | 1HT | HA01 |
C. Close Access
(1) Open the valve of the oxygen storage cylinder (5750HM).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close access door 812.
(4) Remove the access platform(s).
Subtask 35-13-41-860-052-A ** ON A/C NOT FOR ALL (1) Open the valve of the oxygen storage cylinder (5750HM).
CAUTION:
TURN THE HANDVALVES ON ALL OXYGEN BOTTLES UNTIL THEY ARE FULLY OPEN. IF THE HANDVALVES ARE NOT FULLY OPEN BEFORE FLIGHT, IT IS POSSIBLE THAT THE OXYGEN PRESSURE DATA ON THE ECAM DOOR/OXY PAGE WILL NOT BE CORRECT.
(a) Slowly and fully open the valve of the oxygen storage cylinder (5750HM). (2) Make sure that the work area is clean and clear of tools and other items.
(3) Close access door 812.
(4) Remove the access platform(s).
D. Put the aircraft back to its initial configuration.
(1) Remove the WARNING NOTICE(S).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) Remove the WARNING NOTICE(S).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).