DOC AIRBUS | AMM A320FInstallation of the Drain Valve of the Green Hydraulic Reservoir
TASK 29-11-41-400-004-A
Installation of the Drain Valve of the Green Hydraulic Reservoir
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 29-11-41-860-062-A
Subtask 29-11-41-420-053-A
Subtask 29-11-41-860-063-A
[Rev.10 from 2021]
2026.04.01 07:53:16 UTC
Installation of the Drain Valve of the Green Hydraulic Reservoir
ZONE: 147
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 2 | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 1.50 and 1.40 m.daN (11.06 and 10.32 lbf.ft )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| No specific | lockwire,corrosion resistant steel dia. 0.8mm (0.032in.) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 147 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 61 | O-RING | AIPC 29-11-41-01-170 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-12-29-611-001-A | Fill the Hydraulic Fluid Reservoir with a Hand Pump |
| TASK 12-12-29-611-002-A | Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart |
| 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 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 29-23-00-860-001-A | Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) |
| TASK 29-23-00-860-002-A | Connection of the Isolation Coupling of the Power Transfer Unit (PTU) |
| TASK 32-12-00-010-001-A | Open the Main Gear Doors for Access |
| TASK 32-12-00-410-001-A | Close the Main Gear Doors after Access |
Drain ValveSubtask 29-11-41-860-062-A
A. Aircraft Maintenance Configuration
(2) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Green hydraulic system:
(Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
(5) Make sure that the main doors of the main gear are open (Ref. AMM TASK 32-12-00-010-001).
(6) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. AMM TASK 29-23-00-860-001).
Subtask 29-11-41-865-063-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 WARNING NOTICE(S) are in position to tell persons not to pressurize the Green hydraulic system:
- in the cockpit on the hydraulic section 40VU of the overhead panel,
- on the ground service panel of the Green hydraulic system.
(Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
(5) Make sure that the main doors of the main gear are open (Ref. AMM TASK 32-12-00-010-001).
(6) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. AMM TASK 29-23-00-860-001).
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 | 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/G HYD/PUMP ENG1/MONG | 1702GK | R34 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/LOW/LVL/IND | 1832GQ | N32 |
| 121VU | HYDRAULIC/HYD/QTY/IND | 1831GQ | P35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
Subtask 29-11-41-420-053-A
A. Installation of the Drain Valve
(1) Remove the blanking plug from the union (60).
(2) Remove the blanking plug or the blanking cap from the drain valve (62).
(3) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the union and to the new AIPC 29-11-41-01-170 O-RING (61).
(4) Put the O-ring (61) in position on the drain valve (62).
(5) Install the drain valve (62) in the union (60).
(6) Torque the drain valve (62) to between 1.50 and 1.40 m.daN (11.06 and 10.32 lbf.ft ).
(7) Safety the drain valve (62) with lockwire,corrosion resistant steel dia. 0.8mm (0.032in.).
Subtask 29-11-41-860-064-A (1) Remove the blanking plug from the union (60).
(2) Remove the blanking plug or the blanking cap from the drain valve (62).
(3) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the union and to the new AIPC 29-11-41-01-170 O-RING (61).
(4) Put the O-ring (61) in position on the drain valve (62).
(5) Install the drain valve (62) in the union (60).
(6) Torque the drain valve (62) to between 1.50 and 1.40 m.daN (11.06 and 10.32 lbf.ft )
. (7) Safety the drain valve (62) with lockwire,corrosion resistant steel dia. 0.8mm (0.032in.).
B. Preparation for the Test
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Fill the reservoir of the Green hydraulic system (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002) and make sure that the fluid level in the Green Hydraulic Reservoir is correct.
(3) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002).
Subtask 29-11-41-790-052-A (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Fill the reservoir of the Green hydraulic system (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002) and make sure that the fluid level in the Green Hydraulic Reservoir is correct.
(3) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002).
C. Leak Test of the Hydraulic Connections
(1) Examine the connection of the drain valve (62) and the union (60).
(2) Make sure that there are no leaks.
5. Close-up(1) Examine the connection of the drain valve (62) and the union (60).
(2) Make sure that there are no leaks.
Subtask 29-11-41-860-063-A
A. Put the aircraft back to the serviceable condition.
(1) Make sure that the level of fluid in the reservoir of the Green hydraulic system is correct. (Ref. AMM TASK 12-12-29-611-001) (Ref. AMM TASK 12-12-29-611-002)
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(3) Connect the isolation coupling of the power transfer unit (Ref. AMM TASK 29-23-00-860-002).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
(6) Make sure that the work area is clean and clear of tools and other items.
(7) Close the main doors of the main gear (Ref. AMM TASK 32-12-00-410-001).
Subtask 29-11-41-865-064-A (1) Make sure that the level of fluid in the reservoir of the Green hydraulic system is correct. (Ref. AMM TASK 12-12-29-611-001) (Ref. AMM TASK 12-12-29-611-002)
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(3) Connect the isolation coupling of the power transfer unit (Ref. AMM TASK 29-23-00-860-002).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
(6) Make sure that the work area is clean and clear of tools and other items.
(7) Close the main doors of the main gear (Ref. AMM TASK 32-12-00-410-001).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** 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/G HYD/PUMP ENG1/MONG | 1702GK | R34 |
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/LOW/LVL/IND | 1832GQ | N32 |
| 121VU | HYDRAULIC/HYD/QTY/IND | 1831GQ | P35 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |