DOC AIRBUS | AMM A320FInstallation of the Alternate-Brake Servovalve Manifold
TASK 32-43-31-400-001-A
Installation of the Alternate-Brake Servovalve Manifold
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 32-43-31-941-052-A ** ON A/C NOT FOR ALL
Subtask 32-43-31-420-051-A ** ON A/C NOT FOR ALL
Subtask 32-43-31-942-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:49:07 UTC
Installation of the Alternate-Brake Servovalve Manifold
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 3M (10 FT) |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-21-11-911-001-A | Tightening Torques for Standard Threaded Fasteners |
| TASK 20-23-11-917-001-A | Tightening Practices for Hydraulic Connections |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| 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 32-00-00-481-001-A | Installation of the Safety Devices on the Landing Gears |
| TASK 32-43-00-710-001-A | Operational Check of Alternate Braking System |
| TASK 32-43-00-870-002-A | Bleeding of the High Pressure Alternate Braking System |
Subtask 32-43-31-941-052-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:
Subtask 32-43-31-860-050-A ** ON A/C NOT FOR ALL (1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:
- make sure that the landing-gear control-lever 6GA is in the DOWN position
- make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the landing gear.
B. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 3M (10 FT) is below the applicable false spar at the alternate-brake servovalve manifold.
(2) Make sure that the Yellow hydraulic system has been depressurized (Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the pressure in the brake accumulator of the Yellow hydraulic system is at zero.
(4) Make sure that the isolation coupling of the PTU is disconnected (Ref. AMM TASK 29-23-00-860-001).
Subtask 32-43-31-865-051-A ** ON A/C NOT FOR ALL (1) Make sure that the ACCESS PLATFORM 3M (10 FT) is below the applicable false spar at the alternate-brake servovalve manifold.
(2) Make sure that the Yellow hydraulic system has been depressurized (Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the pressure in the brake accumulator of the Yellow hydraulic system is at zero.
(4) Make sure that the isolation coupling of the PTU is disconnected (Ref. AMM TASK 29-23-00-860-001).
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 | |||
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY | 4GG | M36 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/CTL | 3GG | M35 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/CTL | 1GG | M34 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY | 2GG | M33 |
| 121VU | HYDRAULIC/PARK BRK/CTL/STBY | 71GG | N37 |
| 121VU | HYDRAULIC/PARK BRK/CTL/NORM | 70GG | N36 |
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
Subtask 32-43-31-420-051-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Remove the CAP - BLANKING from the hydraulic and the electrical connectors.
(5) Make sure that the hydraulic line end-fittings are serviceable.
Subtask 32-43-31-420-050-A ** ON A/C NOT FOR ALL (1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Remove the CAP - BLANKING from the hydraulic and the electrical connectors.
(5) Make sure that the hydraulic line end-fittings are serviceable.
B. Installation of the Alternate-Brake Servovalve Manifold
(1) Install the manifold (2) with the four bolts (4).
(2) Tighten the four bolts (4) (Ref. AMM TASK 20-21-11-911-001).
(3) Connect the hydraulic connectors (3) and (5) (Ref. AMM TASK 20-23-11-917-001).
(4) Connect the electrical connectors (1).
(5) Make sure that the work area is clean and clear of tools and other items.
Subtask 32-43-31-865-052-A ** ON A/C NOT FOR ALL (1) Install the manifold (2) with the four bolts (4).
(2) Tighten the four bolts (4) (Ref. AMM TASK 20-21-11-911-001).
(3) Connect the hydraulic connectors (3) and (5) (Ref. AMM TASK 20-23-11-917-001).
(4) Connect the electrical connectors (1).
(5) Make sure that the work area is clean and clear of tools and other items.
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 32-43-31-860-052-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY | 4GG | M36 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/CTL | 3GG | M35 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/CTL | 1GG | M34 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY | 2GG | M33 |
| 121VU | HYDRAULIC/PARK BRK/CTL/STBY | 71GG | N37 |
| 121VU | HYDRAULIC/PARK BRK/CTL/NORM | 70GG | N36 |
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
D. Aircraft Configuration
(1) Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002).
Subtask 32-43-31-870-050-A ** ON A/C NOT FOR ALL Subtask 32-43-31-710-050-A ** ON A/C NOT FOR ALL (1) Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002).
F. Test
(1) Do an operational test of the alternate brake system (Ref. AMM TASK 32-43-00-710-001).
(2) Make sure that there are no hydraulic leaks at the hydraulic connectors (3) and (5).
5. Close-up(1) Do an operational test of the alternate brake system (Ref. AMM TASK 32-43-00-710-001).
(2) Make sure that there are no hydraulic leaks at the hydraulic connectors (3) and (5).
Subtask 32-43-31-942-050-A ** ON A/C NOT FOR ALL
A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.