DOC AIRBUS | AMM A320FInstallation of the Brake Selector Valve
TASK 32-42-11-400-001-A
Installation of the Brake Selector Valve
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 32-42-11-860-051-A
Subtask 32-42-11-420-051-B
Subtask 32-42-11-410-050-A
[Rev.10 from 2021]
2026.04.01 07:56:37 UTC
Installation of the Brake Selector Valve
WARNING:
MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
WARNING:
OBEY THE HYDRAULIC SAFETY PROCEDURES.
WORK ON THE HYDRAULIC SYSTEMS CAN BE DANGEROUS.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
FIN: 23GG
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| (Material No.04JMD9) | Top Coat Polyurethane-- Decorative Furnishing |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| No specific | corrosion resistant steel lockwire 0.6 mm (0.024 in.) |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 6 | SEAL | AIPC 29-11-15-02-110 |
| 5 | RING | AIPC 29-11-15-02-120 |
| 3 | RING | AIPC 29-11-15-02-130 |
| 2 | PACKING | AIPC 29-11-15-02-140 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-12-29-611-001-A | Fill the Hydraulic Fluid Reservoir with a Hand Pump |
| TASK 20-23-21-911-001-A | Removal/Installation of the Bobbins from their Housings and Installation of O-rings, Square Seals, and Back-up Rings on the Bobbins |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| 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 29-00-00-910-002-A | Safety Procedures of the Hydraulic System |
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-14-00-614-001-A | Depressurization of the Hydraulic Reservoirs |
| 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 32-00-00-860-001-A | Flight Configuration Precautions with Electrical Power |
| TASK 32-00-00-860-001-A-01 | Flight Configuration Precautions without Electrical Power |
| TASK 32-12-00-410-001-A | Close the Main Gear Doors after Access |
| TASK 32-42-00-710-001-A | Operational Check of the Normal Braking System |
| TASK 32-42-00-870-001-A | Bleeding of the Normal Braking at the Brake Units |
| TASK 51-75-13-916-002-A | Repair to a layer of Corrosion Preventive Compound |
Brake Selector Valve 23GGSubtask 32-42-11-860-051-A
A. Aircraft Maintenance Configuration
(1) Make sure that the electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(3) Make sure that the flight configuration precautions are obeyed (Ref. AMM TASK 32-00-00-860-001).
(4) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(5) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
Subtask 32-42-11-865-051-A (1) Make sure that the electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(3) Make sure that the flight configuration precautions are obeyed (Ref. AMM TASK 32-00-00-860-001).
(4) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(5) Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 32-42-11-941-051-A | 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/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 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
C. Safety Precautions
(1) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Green hydraulic system:
Subtask 32-42-11-560-050-B (1) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Green hydraulic system:
- On the panel 40VU in the cockpit,
- On the ground service panel of the Green hydraulic system.
D. 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) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(5) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packings (2) and the new back-up rings (3).
(6) If removed apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new seals (6) and the new back-up rings (5).
4. Procedure(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) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(5) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new packings (2) and the new back-up rings (3).
(6) If removed apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new seals (6) and the new back-up rings (5).
Subtask 32-42-11-420-051-B
A. Installation of the Brake Selector Valve 23GG
(1) Remove the blanking plugs.
(2) If removed install the new AIPC 29-11-15-02-120 RING (5) and the new AIPC 29-11-15-02-110 SEAL (6) on the bobbins (4) (Ref. AMM TASK 20-23-21-911-001).
(3) If removed install the bobbins (4) with the back-up rings (5) and the seals (6) in the brake selector valve (11) (Ref. AMM TASK 20-23-21-911-001).
(4) Install the new AIPC 29-11-15-02-130 RING (3) and the new AIPC 29-11-15-02-140 PACKING (2) on the bobbins (4).
(5) Carefully install the brake selector valve (11) on the manifold assembly (1).
(6) Install the bonding strap (7), the washers (8) and the bolts (9). TORQUE the bolts (9) to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in ).
(8) Protect the bonding (Ref. AMM TASK 20-28-00-912-802).
(9) Mark the bolts with Top Coat Polyurethane-- Decorative Furnishing (Material No.04JMD9) .
(10) Remove the blanking caps.
(11) Make sure that all the electrical connections are clean and in the correct condition.
(12) Connect the electrical connector (10) to the brake selector valve (11).
Subtask 32-42-11-865-052-A (1) Remove the blanking plugs.
(2) If removed install the new AIPC 29-11-15-02-120 RING (5) and the new AIPC 29-11-15-02-110 SEAL (6) on the bobbins (4) (Ref. AMM TASK 20-23-21-911-001).
(3) If removed install the bobbins (4) with the back-up rings (5) and the seals (6) in the brake selector valve (11) (Ref. AMM TASK 20-23-21-911-001).
(4) Install the new AIPC 29-11-15-02-130 RING (3) and the new AIPC 29-11-15-02-140 PACKING (2) on the bobbins (4).
(5) Carefully install the brake selector valve (11) on the manifold assembly (1).
(6) Install the bonding strap (7), the washers (8) and the bolts (9). TORQUE the bolts (9) to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in )
. WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(7) Safety the bolts (9) with the corrosion resistant steel lockwire 0.6 mm (0.024 in.). (8) Protect the bonding (Ref. AMM TASK 20-28-00-912-802).
(9) Mark the bolts with Top Coat Polyurethane-- Decorative Furnishing (Material No.04JMD9) .
(10) Remove the blanking caps.
(11) Make sure that all the electrical connections are clean and in the correct condition.
(12) Connect the electrical connector (10) to the brake selector valve (11).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 32-42-11-860-052-A | 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/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 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/G HYD/PUMP ENG1/MONG | 1702GK | R33 |
C. Aircraft Maintenance Configuration
(1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
(2) Remove the container.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
Subtask 32-42-11-870-050-A (1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
(2) Remove the container.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
D. Bleed the Normal Braking System
(1) Bleed the normal braking at the brake units (Ref. AMM TASK 32-42-00-870-001).
Subtask 32-42-11-710-051-A (1) Bleed the normal braking at the brake units (Ref. AMM TASK 32-42-00-870-001).
E. Operational Check of the Normal Braking System
(1) Do the operational check of the normal braking system (Ref. AMM TASK 32-42-00-710-001).
5. Close-up(1) Do the operational check of the normal braking system (Ref. AMM TASK 32-42-00-710-001).
Subtask 32-42-11-410-050-A
A. Close Access
(1) Apply corrosion protection to the bolt head heads, pipe connectors and the adjacent areas (Ref. AMM TASK 51-75-13-916-002).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the applicable MLG door (Ref. AMM TASK 32-12-00-410-001).
(4) If necessary fill the reservoir of the Green hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Apply corrosion protection to the bolt head heads, pipe connectors and the adjacent areas (Ref. AMM TASK 51-75-13-916-002).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the applicable MLG door (Ref. AMM TASK 32-12-00-410-001).
(4) If necessary fill the reservoir of the Green hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.