DOC AIRBUS | AMM A320FInstallation of the Outflow Valve (From Outside)
TASK 21-31-51-400-006-A
Installation of the Outflow Valve (From Outside)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 21-31-51-860-060-A ** ON A/C NOT FOR ALL
Subtask 21-31-51-420-055-A ** ON A/C NOT FOR ALL
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Clean the component interfaces and the adjacent area.
(4) Make sure that the joining faces of the outflow valve (5) and the aircraft structure are dry and free from grease and sealant.
(5) Make sure that the gasket (6) is in a good condition. If necessary, replace the AIPC 21-31-04-08-020 GASKET (6).
(6) Carefully put the outflow valve (5) (outflow valve electronics first) through the hole in the aircraft skin.
(8) Remove the blanking caps from the electrical connector (2) 10HL-C and the manual motor (51) 10HL-5.
(9) Make sure that all the electrical connections are clean and in the correct condition.
(10) Connect the electrical connector (2) 10HL-C.
(11) Put the gasket (6) in position on the outflow-valve support structure and make sure that:
(13) Install the screws (7) as identified in the removal procedure and tighten them with your hand at this time.
Subtask 21-31-51-420-055-C ** ON A/C NOT FOR ALL
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Clean the component interfaces and the adjacent area.
(4) Make sure that the joining faces of the outflow valve (5) and the aircraft structure are dry and free from grease and sealant.
(5) Make sure that the gasket (6) is in a good condition. If necessary, replace the AIPC 21-31-04-08-020 GASKET (6).
(6) Loosen the nuts (20).
(9) Remove the blanking caps from the electrical connector (2) 10HL-C.
(10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connector (2) 10HL-C.
(12) Put the gasket (6) in position on the outflow-valve support structure and make sure that:
(14) Install the screws (7) as identified in the removal procedure and tighten them with your hand at this time.
Subtask 21-31-51-865-114-A ** ON A/C NOT FOR ALL
Subtask 21-31-51-865-070-A ** ON A/C NOT FOR ALL
(3) TORQUE in sequence (refer to sequence chart) the screws (7) to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in )
.
(4) Use a GAGE - FEELER and measure the gap between the support brackets (25) and the attachment-lugs of the gearbox assembly.
(5) Use as necessary a mixture of washer(s) (24) to close the gap.
(7) Tighten the bolts (22) (Ref. AMM TASK 20-28-00-912-802).
(8) Bonding strap installation:
(a) Put the bonding strap (4) in position on the outflow valve (5). Install the washers (28), the bolt (27) and the nut (29) (Ref. AMM TASK 20-28-00-912-802).
(10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connectors (1) 10HL-B, (3) 10HL-A, (23) 10HL-E, (26) 10HL-D and (2) 10HL-C in that order.
(12) Make sure that the work area is clean and clear of tools and other items.
Subtask 21-31-51-420-058-E ** ON A/C NOT FOR ALL
(3) TORQUE in sequence (refer to sequence chart) the screws (7) to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in ).
(4) Install the bolts (22) and the washers (21) in the support brackets (25).
(5) Tighten the bolts (22).
(6) Tighten the nuts (20).
(7) Bonding strap installation:
(a) Put the bonding strap (4) in position on the outflow valve (5). Install the washers (28), the bolt (27) and the nut (29) (Ref. AMM TASK 20-28-00-912-802).
(9) Make sure that all the electrical connections are clean and in the correct condition.
(10) Connect the electrical connectors (1) 10HL-B, (3) 10HL-A, (23) 10HL-E, (26) 10HL-D and (2) 10HL-C in that order.
(11) Make sure that the work area is clean and clear of tools and other items.
Subtask 21-31-51-865-071-A ** ON A/C NOT FOR ALL
Subtask 21-31-51-410-066-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:11:15 UTC
Installation of the Outflow Valve (From Outside)
WARNING:
MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
FIN: 10HL ** ON A/C NOT FOR ALL
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 312AR, 824 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 6 | GASKET | AIPC 21-31-04-08-020 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 21-31-00-710-002-A | Operational Test of the Pressure Control and Monitoring |
| TASK 21-31-00-710-003-A | Operational Test of Manual Mode Selection and Manual Mode Pressure Control and Functional Test of Manual Mode Cabin Altitude/Outflow Valve Position Indication |
| TASK 23-44-00-700-001-A | Operational Test of the Service Interphone |
| 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 52-41-00-410-002-A | Close the Avionics Compartment Doors after Access |
Outflow Valve 10HLSubtask 21-31-51-860-060-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The ACCESS PLATFORM 1M(3 FT) is in position at the avionics compartment access-door 824 in zone 126.
(c) The avionics compartment access-door 824 is open.
(e) The ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position at the access panel 312AR.
(f) The access panel 312AR is removed.
(g) In the zone 312 the 600 ohm boomset is connected to the service interphone jack 13RJ.
(h) In the cockpit:
1 On the CAPT jack panel the 600 ohm headset is connected to the related connector,
2 On the overhead panel 50VU the ON legend on the SVCE INT OVRD pushbutton switch is off,
3 On the CABIN PRESS panel 25VU make sure that:
Subtask 21-31-51-865-096-A ** ON A/C NOT FOR ALL (1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The ACCESS PLATFORM 1M(3 FT) is in position at the avionics compartment access-door 824 in zone 126.
(c) The avionics compartment access-door 824 is open.
WARNING:
OPEN THE ACCESS DOOR AND MAKE SURE IT STAYS OPEN.
ATTACH A WARNING NOTICE TO THE ACCESS DOOR TO TELL PERSONS NOT TO CLOSE IT.
THIS IS TO PREVENT ACCIDENTAL PRESSURIZATION OF THE AIRCRAFT BY THE AIR CONDITIONING SYSTEM IF ALL THE OTHER CABIN OPENINGS ARE CLOSED.
PRESSURIZATION OF THE AIRCRAFT CAN BE DANGEROUS.
IT CAN CAUSE A DOOR TO OPEN WITH EXPLOSIVE FORCE WHICH CAN CAUSE INJURY AND/OR DAMAGE.
(d) The ACCESS PLATFORM 2M (6 FT) is in position below the outflow valve area in zone 172. (e) The ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position at the access panel 312AR.
(f) The access panel 312AR is removed.
(g) In the zone 312 the 600 ohm boomset is connected to the service interphone jack 13RJ.
(h) In the cockpit:
1 On the CAPT jack panel the 600 ohm headset is connected to the related connector,
2 On the overhead panel 50VU the ON legend on the SVCE INT OVRD pushbutton switch is off,
3 On the CABIN PRESS panel 25VU make sure that:
- the MODE SEL pushbutton switch is in the MAN position (the MAN legend is on) and,
- the MAN V/S CTL switch is at the DN position.
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 | AIR COND/CAB/PRESS/CTL1 | 1HL | D09 |
| 122VU | AIR COND/AFT CARGO VENT/FAN | 30HN | S22 |
| 122VU | AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY | 6HU | U19 |
| 122VU | AIR COND/CAB PRESS/CTL/MAN | 3HL | Y23 |
| 122VU | AIR COND/CAB PRESS/CTL/2 | 2HL | Y22 |
Subtask 21-31-51-420-055-A ** ON A/C NOT FOR ALL
WARNING:
SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.
A. To Position the Outflow Valve in the Aircraft NOTE: For this part of the procedure the outflow valve must be in the closed position.
(1) Make sure that there is no blanking plug installed in the static port of the outflow valve electronic boxes. (2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Clean the component interfaces and the adjacent area.
(4) Make sure that the joining faces of the outflow valve (5) and the aircraft structure are dry and free from grease and sealant.
(5) Make sure that the gasket (6) is in a good condition. If necessary, replace the AIPC 21-31-04-08-020 GASKET (6).
(6) Carefully put the outflow valve (5) (outflow valve electronics first) through the hole in the aircraft skin.
NOTE: The outflow valve weighs approx. 12.5 kg (27.5578 lb).
The actuator side of the outflow valve must point to the bottom of the aircraft.
(7) Put the outflow valve (5) to one side so that you can get access to the electrical connector (2) 10HL-C. The actuator side of the outflow valve must point to the bottom of the aircraft.
(8) Remove the blanking caps from the electrical connector (2) 10HL-C and the manual motor (51) 10HL-5.
(9) Make sure that all the electrical connections are clean and in the correct condition.
(10) Connect the electrical connector (2) 10HL-C.
(11) Put the gasket (6) in position on the outflow-valve support structure and make sure that:
- The gasket location tab is on the forward, actuator side of the outflow valve.
- You do not move the gasket (6).
- The location pins (8) are in the correct position in the outflow-valve support structure.
(13) Install the screws (7) as identified in the removal procedure and tighten them with your hand at this time.
WARNING:
SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.
A. To Position the Outflow Valve in the Aircraft NOTE: For this part of the procedure the outflow valve must be in the closed position.
(1) Make sure that there is no blanking plug installed in the static port of the outflow valve electronic boxes. (2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Clean the component interfaces and the adjacent area.
(4) Make sure that the joining faces of the outflow valve (5) and the aircraft structure are dry and free from grease and sealant.
(5) Make sure that the gasket (6) is in a good condition. If necessary, replace the AIPC 21-31-04-08-020 GASKET (6).
(6) Loosen the nuts (20).
NOTE: Only loosen the nuts sufficiently to allow the support brackets (25) to move up or down.
(7) Carefully put the outflow valve (5) (outflow valve electronics first) through the hole in the aircraft skin. NOTE: The outflow valve weighs approx. 12.5 kg (27.5578 lb).
The actuator side of the outflow valve must point to the bottom of the aircraft.
(8) Put the outflow valve (5) to one side so that you can get access to the electrical connector (2) 10HL-C. The actuator side of the outflow valve must point to the bottom of the aircraft.
(9) Remove the blanking caps from the electrical connector (2) 10HL-C.
(10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connector (2) 10HL-C.
(12) Put the gasket (6) in position on the outflow-valve support structure and make sure that:
- The gasket location tab is on the forward, actuator side of the outflow valve.
- You do not move the gasket (6).
- The location pins (8) are in the correct position in the outflow-valve support structure.
(14) Install the screws (7) as identified in the removal procedure and tighten them with your hand at this time.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-31-51-860-051-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/CAB PRESS/CTL/MAN | 3HL | Y23 |
WARNING:
MAKE SURE THAT THE TRAVEL RANGES OF THE OUTFLOW VALVES ARE CLEAR. MOVEMENT OF THE OUTFLOW VALVES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
C. Open the Outflow Valve from the Cockpit NOTE: For this procedure we recommend that a minimum of two persons are in constant contact with each other through the service interphone system. One person must operate the outflow valve from the cockpit, the other must be at the outflow valve.
(1) On the CABIN PRESS panel 25VU: - make sure that the MODE SEL pushbutton switch is in the MAN position (the MAN legend is on) and,
- put the MAN V/S CTL switch to the UP position to open the outflow valve.
D. Open, safety and tag this(these) circuit breaker(s):
Subtask 21-31-51-420-058-D ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR COND/CAB PRESS/CTL/MAN | 3HL | Y23 |
WARNING:
SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.
E. Installation of the Outflow Valve NOTE: The outflow valve must be in the open position for this part of the procedure.
(1) Get access through the open outlet valve and disconnect the electrical connector (2) 10HL-C. NOTE: This step is done to make sure that the outflow valve does not accidentally close.
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.(3) TORQUE in sequence (refer to sequence chart) the screws (7) to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in )
. (4) Use a GAGE - FEELER and measure the gap between the support brackets (25) and the attachment-lugs of the gearbox assembly.
(5) Use as necessary a mixture of washer(s) (24) to close the gap.
NOTE: The maximum gap limit is 0.00 +0.35 mm or -0.35 mm (0.0000 +0.0138 in. or -0.0138 in.).
(6) Install the bolts (22) and the washers (21) in the support brackets (25). (7) Tighten the bolts (22) (Ref. AMM TASK 20-28-00-912-802).
(8) Bonding strap installation:
(a) Put the bonding strap (4) in position on the outflow valve (5). Install the washers (28), the bolt (27) and the nut (29) (Ref. AMM TASK 20-28-00-912-802).
NOTE: This step is only applicable for outflow valves P/N 9023-15703-81 and previous.
(b) Put the bonding strap (4) in position on the outflow valve (5). Install the washer (28) and the bolt (27) (Ref. AMM TASK 20-28-00-912-802). NOTE: This step is only applicable for outflow valve P/N 20790-01AA and subsequent.
(9) Remove the blanking caps from the disconnected electrical connectors. (10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connectors (1) 10HL-B, (3) 10HL-A, (23) 10HL-E, (26) 10HL-D and (2) 10HL-C in that order.
(12) Make sure that the work area is clean and clear of tools and other items.
WARNING:
SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.
E. Installation of the Outflow Valve NOTE: The outflow valve must be in the open position for this part of the procedure.
(1) Get access through the open outlet valve and disconnect the electrical connector (2) 10HL-C. NOTE: This step is done to make sure that the outflow valve does not accidentally close.
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.(3) TORQUE in sequence (refer to sequence chart) the screws (7) to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in )
. (4) Install the bolts (22) and the washers (21) in the support brackets (25).
(5) Tighten the bolts (22).
(6) Tighten the nuts (20).
(7) Bonding strap installation:
(a) Put the bonding strap (4) in position on the outflow valve (5). Install the washers (28), the bolt (27) and the nut (29) (Ref. AMM TASK 20-28-00-912-802).
NOTE: This step is only applicable for outflow valves P/N 9023-15703-81 and previous.
(b) Put the bonding strap (4) in position on the outflow valve (5). Install the washer (28) and the bolt (27) (Ref. AMM TASK 20-28-00-912-802). NOTE: This step is only applicable for outflow valve P/N 20790-01AA and subsequent.
(8) Remove the blanking caps from the disconnected electrical connectors. (9) Make sure that all the electrical connections are clean and in the correct condition.
(10) Connect the electrical connectors (1) 10HL-B, (3) 10HL-A, (23) 10HL-E, (26) 10HL-D and (2) 10HL-C in that order.
(11) Make sure that the work area is clean and clear of tools and other items.
F. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-31-51-710-055-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR COND/CAB/PRESS/CTL1 | 1HL | D09 |
| 122VU | AIR COND/AFT CARGO VENT/FAN | 30HN | S22 |
| 122VU | AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY | 6HU | U19 |
| 122VU | AIR COND/CAB PRESS/CTL/MAN | 3HL | Y23 |
| 122VU | AIR COND/CAB PRESS/CTL/2 | 2HL | Y22 |
G. Pressure Control and Monitoring System Tests
(2) Do the operational test of the manual pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-003).
5. Close-upNOTE: The Operational Test of the Pressure Control and Monitoring System must be performed on both system channels. Ensure that TEST OK or a failure message is displayed. If the test is interrupted it must be restarted until TEST OK or failure message is displayed.
(1) Do the operational test of the pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-002). (2) Do the operational test of the manual pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-003).
Subtask 21-31-51-410-066-A ** ON A/C NOT FOR ALL
A. Close Access
(1) In the zone 312 disconnect and remove the 600 ohm boomset from the service interphone jack 13RJ.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the access panel 312AR.
(4) Remove the warning notice and close the avionics compartment access-door 824 (Ref. AMM TASK 52-41-00-410-002).
(5) Remove the access platform(s).
(6) In the cockpit on the CAPT jack panel, disconnect and remove the 600 ohm headset.
Subtask 21-31-51-862-050-A ** ON A/C NOT FOR ALL (1) In the zone 312 disconnect and remove the 600 ohm boomset from the service interphone jack 13RJ.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the access panel 312AR.
(4) Remove the warning notice and close the avionics compartment access-door 824 (Ref. AMM TASK 52-41-00-410-002).
(5) Remove the access platform(s).
(6) In the cockpit on the CAPT jack panel, disconnect and remove the 600 ohm headset.