DOC AIRBUS | AMM A320FInstallation of the Check Valve
TASK 26-23-21-400-002-A
Installation of the Check Valve
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 26-23-21-860-051-A ** ON A/C NOT FOR ALL
Subtask 26-23-21-420-051-A ** ON A/C NOT FOR ALL
Subtask 26-23-21-865-055-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 06:45:01 UTC
Installation of the Check Valve
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
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | Torque wrench: range to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )  | |
| No specific | Torque wrench: range to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft ) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03FAB1) | Mineral Oil base Grease-- Vaseline or Petrolatum - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 150 | AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT |
| 160 | BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT |
| 170 | AFT CAB U/FLOOR COMPT AFT BHD OF BULK |
| 161DW, 811, 826 |
| REFERENCE | DESIGNATION |
|---|---|
| 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 25-55-12-000-001-A | Removal of the Aft Cargo-Compartment Partition at FR65 |
| TASK 25-55-12-400-001-A | Installation of the Aft Cargo-Compartment Partition at FR65 |
| TASK 26-23-00-200-003-A | Remove the Pressure Reducer for in-shop Functional Check Including Check of Fire Extinguishing Lines for Leakage and Obstruction |
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-30-00-860-002-A | Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-41-00-410-002-A | Close the Avionics Compartment Doors after Access |
Check Valve (5046WM, 5047WM)Subtask 26-23-21-860-051-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).
Subtask 26-23-21-010-054-C ** ON A/C NOT FOR ALL (1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
B. Get Access
(1) Make sure that the access door 811 is open.
(2) Make sure that the aft cargo-compartment door 826 is open (Ref. AMM TASK 52-30-00-860-001).
(3) Make sure that the CARGO COMPT LIGHT switch 8LU is in the ON position.
(4) Make sure that the partition panel 161DW is removed (Ref. AMM TASK 25-55-12-000-001).
Subtask 26-23-21-865-054-A ** ON A/C NOT FOR ALL (1) Make sure that the access door 811 is open.
(2) Make sure that the aft cargo-compartment door 826 is open (Ref. AMM TASK 52-30-00-860-001).
(3) Make sure that the CARGO COMPT LIGHT switch 8LU is in the ON position.
(4) Make sure that the partition panel 161DW is removed (Ref. AMM TASK 25-55-12-000-001).
C. 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/CARGO FIRE/EXTIG/BTL2 | 8WX | C04 |
| 49VU | AIR COND/CARGO FIRE/EXTIG/BTL1 | 1WX | C03 |
Subtask 26-23-21-420-051-A ** ON A/C NOT FOR ALL
A. Installation of the Check Valve
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the disconnected line ends.
(4) Remove the blanking plugs from the check valve (3).
(5) Apply grease:
(6) Put the check valve (3) in its installation position.
(7) Connect the pipe (1) to the check valve (3).
(8) TORQUE the nut (2) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft ).
(9) Connect the pipe (5) to the check valve (3).
(10) TORQUE the nut (4) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in ).
Subtask 26-23-21-210-052-A ** ON A/C NOT FOR ALL NOTE: The installation procedure is the same for the check valves 5046WM and 5047WM.
(1) Clean the component interfaces and the adjacent area.(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the disconnected line ends.
(4) Remove the blanking plugs from the check valve (3).
(5) Apply grease:
CAUTION:
APPLY A SMALL QUANTITY OF THE CORRECT GREASE TO THE MALE THREADS OF THE CONNECTIONS. THIS WILL PREVENT DAMAGE TO THE THREADS.
MAKE SURE THAT GREASE DOES NOT GO INTO THE PIPES. GREASE IN THE PIPES CAN CAUSE A MALFUNCTION OF THE SYSTEM.
(a) Apply a small quantity of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the male threads of the check valve (3). (6) Put the check valve (3) in its installation position.
(7) Connect the pipe (1) to the check valve (3).
(8) TORQUE the nut (2) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )
. (9) Connect the pipe (5) to the check valve (3).
(10) TORQUE the nut (4) to between 1.3 and 1.2 m.daN (115.04 and 106.19 lbf.in )
. B. Functional check
(1) Do a check of the pressure reducer in the flow metering device and check of the cargo-compartment fire-extinguishing distribution-piping for leakage and blockages (Ref. AMM TASK 26-23-00-200-003).
5. Close-up(1) Do a check of the pressure reducer in the flow metering device and check of the cargo-compartment fire-extinguishing distribution-piping for leakage and blockages (Ref. AMM TASK 26-23-00-200-003).
Subtask 26-23-21-865-055-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 26-23-21-410-051-C ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR COND/CARGO FIRE/EXTIG/BTL2 | 8WX | C04 |
| 49VU | AIR COND/CARGO FIRE/EXTIG/BTL1 | 1WX | C03 |
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the partition panel 161DW (Ref. AMM TASK 25-55-12-400-001).
(3) Set the CARGO COMPT LIGHT switch 8LU to the OFF position.
(4) Close the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).
(5) Close the access door 811 (Ref. AMM TASK 52-41-00-410-002).
Subtask 26-23-21-862-050-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the partition panel 161DW (Ref. AMM TASK 25-55-12-400-001).
(3) Set the CARGO COMPT LIGHT switch 8LU to the OFF position.
(4) Close the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).
(5) Close the access door 811 (Ref. AMM TASK 52-41-00-410-002).
C. Put the aircraft back to its initial configuration.
(1) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(1) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).