DOC AIRBUS | AMM A320FInstallation of the Outlet Non-Return Valve of the Reservoir Pressurization Unit
TASK 29-14-41-400-003-A
Installation of the Outlet Non-Return Valve of the Reservoir Pressurization Unit
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 29-14-41-860-061-A
Subtask 29-14-41-420-054-A
Subtask 29-14-41-860-062-A
[Rev.10 from 2021]
2026.04.01 00:24:52 UTC
Installation of the Outlet Non-Return Valve of the Reservoir Pressurization Unit
WARNING:
MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
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.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| (Material No.14CCB6) | Testing Medium-Leak Detection - Oxygen System |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 29-00-00-910-002-A | Safety Procedures of the Hydraulic System |
| TASK 29-14-00-614-001-A | Depressurization of the Hydraulic Reservoirs |
| TASK 29-14-00-614-002-A | Pressurization of the Hydraulic Reservoirs through the Ground Connector |
| TASK 29-14-00-614-002-A-01 | Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU) |
| TASK 36-12-00-710-001-A | Operational Test of the APU Bleed Air Supply and Crossbleed Systems |
| TASK 49-00-00-860-005-A | APU Start by External Power |
| TASK 49-00-00-860-005-A-01 | APU Start by Batteries |
| TASK 49-00-00-860-006-A | APU Shutdown by External Power |
| TASK 49-00-00-860-006-A-01 | APU Shutdown by Batteries |
| TASK 49-00-00-860-008-A | APU Start by External Power |
| TASK 49-00-00-860-008-A-01 | APU Start by Batteries |
| TASK 49-00-00-860-009-A | APU Shutdown by External Power (131-9(A)) |
| TASK 49-00-00-860-009-A-01 | APU Shutdown by Batteries (131-9(A)) |
Outlet Non-Return Valve of the Reservoir Pressurization UnitSubtask 29-14-41-860-061-A
A. Aircraft Maintenance Configuration
(2) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the reservoirs of the Green, Blue and Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-14-00-614-001).
(4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Green, Blue and Yellow hydraulic systems:
(6) Make sure that the CONTAINER 3 L(3/4 USGAL) is in position below the reservoir pressurization unit.
Subtask 29-14-41-865-060-A WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002). (2) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the reservoirs of the Green, Blue and Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-14-00-614-001).
(4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Green, Blue and Yellow hydraulic systems:
- in the cockpit on the hydraulic section 40VU of the overhead panel,
- on the ground service panel of the Green, Blue and Yellow hydraulic systems.
(6) Make sure that the CONTAINER 3 L(3/4 USGAL) is in position below the reservoir pressurization unit.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | HYD/HYD PWR/B WARN/& CTL | 2702GJ | C12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | R35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R34 |
| ** ON A/C ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
| ** ON A/C ALL | |||
| 123VU | B HYD/ELEC PUMP | 2701GJ | AB09 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
Subtask 29-14-41-420-054-A
A. Installation of the Outlet Non-Return Valve of the Reservoir Pressurization Unit (1360GM)
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plug from the port of the reservoir pressurization unit (3).
(4) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads and O-rings of the outlet non-return valve (2).
(5) Install the outlet non-return valve (2) in the reservoir pressurization unit (3).
(6) TORQUE the outlet non-return valve (2) to between 1.9 and 1.7 m.daN (14.01 and 12.54 lbf.ft )
.
(7) Remove the blanking plug from the line end (1).
(8) Make sure that the line end-fitting is serviceable.
(9) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the line end-fitting.
(10) Connect the line (1) to the outlet non-return valve (2).
(11) TORQUE the union nut of the line (1) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft ).
Subtask 29-14-41-865-061-A CAUTION:
USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.
(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 plug from the port of the reservoir pressurization unit (3).
(4) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads and O-rings of the outlet non-return valve (2).
(5) Install the outlet non-return valve (2) in the reservoir pressurization unit (3).
(6) TORQUE the outlet non-return valve (2) to between 1.9 and 1.7 m.daN (14.01 and 12.54 lbf.ft )
. (7) Remove the blanking plug from the line end (1).
(8) Make sure that the line end-fitting is serviceable.
(9) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the line end-fitting.
(10) Connect the line (1) to the outlet non-return valve (2).
(11) TORQUE the union nut of the line (1) to between 1.7 and 1.5 m.daN (12.54 and 11.06 lbf.ft )
. B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 29-14-41-790-055-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | HYD/HYD PWR/B WARN/& CTL | 2702GJ | C12 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | H12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/CTL | 1701GK | R35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R34 |
| ** ON A/C ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
| ** ON A/C ALL | |||
| 123VU | B HYD/ELEC PUMP | 2701GJ | AB09 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
C. Test of the Outlet Non-Return Valve
(Ref. AMM TASK 49-00-00-860-005) or
(Ref. AMM TASK 49-00-00-860-008).
(2) Make sure that the bleed air supply from the APU is set to supply the reservoir pressurizing system (Ref. AMM TASK 36-12-00-710-001).
(3) Apply Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to the these connections:
(5) Stop the operation of the aircraft APU (Ref. AMM D/O 49-00-00-86).
(Ref. AMM TASK 49-00-00-860-006) or
(Ref. AMM TASK 49-00-00-860-009).
(6) Pressurize the reservoirs of the Green, Blue and Yellow hydraulic systems (Ref. AMM TASK 29-14-00-614-002).
(7) Examine these connections and make sure that there is no leak:
5. Close-upNOTE: Do a leak test on the outlet non-return valve (2) with the air pressure supplied from both a ground supply and the low pressure air bleed. Do the test at the same time as the pressure is supplied.
(1) Start the aircraft APU (Ref. AMM D/O 49-00-00-86) or (Ref. AMM TASK 49-00-00-860-005) or
(Ref. AMM TASK 49-00-00-860-008).
(2) Make sure that the bleed air supply from the APU is set to supply the reservoir pressurizing system (Ref. AMM TASK 36-12-00-710-001).
(3) Apply Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to the these connections:
- The line (1) and the outlet non-return valve (2),
- the reservoir pressurization unit (3) and the outlet non-return valve (2).
(5) Stop the operation of the aircraft APU (Ref. AMM D/O 49-00-00-86).
(Ref. AMM TASK 49-00-00-860-006) or
(Ref. AMM TASK 49-00-00-860-009).
(6) Pressurize the reservoirs of the Green, Blue and Yellow hydraulic systems (Ref. AMM TASK 29-14-00-614-002).
(7) Examine these connections and make sure that there is no leak:
- The line (1) and the outlet non-return valve (2),
- the reservoir pressurization unit (3) and the outlet non-return valve (2).
Subtask 29-14-41-860-062-A
A. Put the aircraft back to the serviceable condition.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the container.
(3) Remove the warning notices from the cockpit and the ground service panels.
(4) Close the access panel 195BB.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the container.
(3) Remove the warning notices from the cockpit and the ground service panels.
(4) Close the access panel 195BB.