DOC AIRBUS | AMM A320FInstallation of the Selector Valve and Manifold-Assembly
TASK 32-51-23-400-001-A
Installation of the Selector Valve and Manifold-Assembly
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 32-51-23-860-051-A ** ON A/C NOT FOR ALL
Subtask 32-51-23-560-050-A ** ON A/C NOT FOR ALL
Subtask 32-51-23-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:51:38 UTC
Installation of the Selector Valve and Manifold-Assembly
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.
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.04SBA3) | Varnish Polyurethane-Low VOC - External Structure |
| (Material No.06AAA1) | Polysulfide Sealant_General Purpose Brushable - |
| (Material No.06LCG9) | Non Hardening Jointing Putty-Medium Temp. Area - - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 744 | MAIN DOOR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-12-29-611-001-A | Fill the Hydraulic Fluid Reservoir with a Hand Pump |
| TASK 20-23-22-910-001-A | Marking of the Unions after Application of Standard or Specific Tightening Torque |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 29-00-00-910-002-A | Safety Procedures of the Hydraulic System |
| TASK 29-10-00-864-002-A | Depressurize the Yellow 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 32-12-00-010-001-A | Open the Main Gear Doors for Access |
| TASK 32-12-00-410-001-A | Close the Main Gear Doors after Access |
| TASK 32-51-00-720-003-A | Functional Test of the Nose Wheel Steering with the Handwheel |
Selector Valve Manifold-AssemblySubtask 32-51-23-860-051-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Make sure that the RH MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position.
(4) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002).
(5) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(6) Make sure a WARNING NOTICE(S) is in position to tell persons not to pressurize the Yellow hydraulic system:
(8) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the selector valve manifold-assembly.
Subtask 32-51-23-865-051-A ** ON A/C NOT FOR ALL (1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Make sure that the RH MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position.
(4) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002).
(5) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
(6) Make sure a WARNING NOTICE(S) is in position to tell persons not to pressurize the Yellow hydraulic system:
- On the panel 40VU in the cockpit
- On the ground service panel of the Yellow hydraulic system.
(8) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the selector valve manifold-assembly.
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 | ABCU &/Y BRK/PRESS IND | 61GG | C10 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** 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/Y HYD/PUMP ENG2/MONG | 3700GD | Q37 |
| 121VU | HYDRAULIC/Y HYD/PUMP ENG2/CTL | 3701GD | Q36 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C NOT FOR ALL | |||
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
Subtask 32-51-23-560-050-A ** ON A/C NOT FOR ALL
A. Preparation of the Replacement Component
(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 PLUG-BLANKING from each disconnected line end.
(5) Remove the blanking plugs from the hydraulic pipe connectors (4), (6) and (8) of the selector valve manifold-assembly (10).
(6) Lubricate the threads of the hydraulic connectors as follows:
(a) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(b) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the hydraulic pipe connectors (3), (5) and (9).
(c) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the hydraulic connectors (4), (6) and (8) of the selector valve manifold-assembly (10).
(7) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the threads of the bolts (1).
(8) Apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) to the interface area of the selector valve manifold-assembly (10) and the structure (7).
Subtask 32-51-23-420-050-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 PLUG-BLANKING from each disconnected line end.
(5) Remove the blanking plugs from the hydraulic pipe connectors (4), (6) and (8) of the selector valve manifold-assembly (10).
(6) Lubricate the threads of the hydraulic connectors as follows:
(a) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(b) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the hydraulic pipe connectors (3), (5) and (9).
(c) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the threads of the hydraulic connectors (4), (6) and (8) of the selector valve manifold-assembly (10).
(7) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the threads of the bolts (1).
(8) Apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) to the interface area of the selector valve manifold-assembly (10) and the structure (7).
B. Installation of the Selector Valve Manifold-Assembly
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put the selector valve manifold-assembly (10) in its installation position.
(3) Install the washers (2) and the bolts (1).
(4) Install the bonding lead (14), the washer (15), the bolt (16) and the nut (12) to the structure (13) (Ref. AMM TASK 20-28-00-912-802).
(5) Make sure that the connectors of the hydraulic pipes (3), (5) and (9) are clean and in the correct condition.
(6) Connect the hydraulic pipes (3), (5) and (9) to the selector valve manifold-assembly (10).
(7) TORQUE the connector of the hydraulic pipe (3) to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )
.
(8) TORQUE the connectors of the hydraulic pipes (5) and (9) to between 5.9 and 5.4 m.daN (43.51 and 39.82 lbf.ft ).
(9) Paint a red line across the connectors of the hydraulic pipes (3), (5) and (9) (Ref. AMM TASK 20-23-22-910-001).
(10) Remove the CAP-BLANKING from each electrical connector and receptacle.
(11) Make sure that all the electrical connections are clean and in the correct condition.
(12) Connect the electrical connector (11) to the selector valve manifold-assembly (10).
Subtask 32-51-23-860-052-A ** ON A/C NOT FOR ALL (1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put the selector valve manifold-assembly (10) in its installation position.
(3) Install the washers (2) and the bolts (1).
(4) Install the bonding lead (14), the washer (15), the bolt (16) and the nut (12) to the structure (13) (Ref. AMM TASK 20-28-00-912-802).
(5) Make sure that the connectors of the hydraulic pipes (3), (5) and (9) are clean and in the correct condition.
(6) Connect the hydraulic pipes (3), (5) and (9) to the selector valve manifold-assembly (10).
(7) TORQUE the connector of the hydraulic pipe (3) to between 3.2 and 2.9 m.daN (23.60 and 21.39 lbf.ft )
. (8) TORQUE the connectors of the hydraulic pipes (5) and (9) to between 5.9 and 5.4 m.daN (43.51 and 39.82 lbf.ft )
. (9) Paint a red line across the connectors of the hydraulic pipes (3), (5) and (9) (Ref. AMM TASK 20-23-22-910-001).
(10) Remove the CAP-BLANKING from each electrical connector and receptacle.
(11) Make sure that all the electrical connections are clean and in the correct condition.
(12) Connect the electrical connector (11) to the selector valve manifold-assembly (10).
C. Preparation for Test
(1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
(2) If necessary, fill the reservoir of the Yellow hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
Subtask 32-51-23-865-052-A ** ON A/C NOT FOR ALL (1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
(2) If necessary, fill the reservoir of the Yellow hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 32-51-23-710-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | ABCU &/Y BRK/PRESS IND | 61GG | C10 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N30 |
| ** 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/Y HYD/PUMP ENG2/MONG | 3700GD | Q37 |
| 121VU | HYDRAULIC/Y HYD/PUMP ENG2/CTL | 3701GD | Q36 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | HYDRAULIC/HYD POWER/Y | 3803GX | N31 |
| ** ON A/C NOT FOR ALL | |||
| 123VU | Y HYD/ELEC/PUMP | 3802GX | AB06 |
| 123VU | Y HYD/ELEC/ELEC PUMP/NORM | 3801GX | AB03 |
E. Test
(1) Do the functional test of the nose wheel steering (Ref. AMM TASK 32-51-00-720-003).
(2) Make sure that there is no hydraulic fluid leakage from the selector valve manifold-assembly (10).
5. Close-up(1) Do the functional test of the nose wheel steering (Ref. AMM TASK 32-51-00-720-003).
(2) Make sure that there is no hydraulic fluid leakage from the selector valve manifold-assembly (10).
NOTE: Leaks are not permitted.
Subtask 32-51-23-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Apply Varnish Polyurethane-Low VOC - External Structure (Material No.04SBA3) to the interface area of the selector valve manifold-assembly (10) and the structure (7).
(2) Remove the container.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Make sure that the work area is clean and clear of tools and other items.
(6) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).
(7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Apply Varnish Polyurethane-Low VOC - External Structure (Material No.04SBA3) to the interface area of the selector valve manifold-assembly (10) and the structure (7).
(2) Remove the container.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Make sure that the work area is clean and clear of tools and other items.
(6) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).
(7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.