W DOC AIRBUS | AMM A320F

Installation of the Alternate Braking Selector Valve

TASK 32-43-51-400-001-A
Installation of the Alternate Braking Selector Valve

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT)
No specific
1
CONTAINER 5 L (1.32 USGAL)
No specific
Torque wrench: range to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.02ABA1)
Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.06LCG9)
Non Hardening Jointing Putty-Medium Temp. Area - -
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
6
PACKINGS
AIPC 32-43-03-10-060
5
BACK-UP RINGS
AIPC 32-43-03-10-070
3
BACK-UP RINGS
AIPC 32-43-03-10-080
2
SEALS
AIPC 32-43-03-10-090
6
PACKINGS
AIPC 32-43-83-07-120
5
BACK-UP RINGS
AIPC 32-43-83-07-130
3
BACK-UP RINGS
AIPC 32-43-83-07-140
2
SEALS
AIPC 32-43-83-07-150
 D. Referenced Information
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 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 32-43-00-710-001-A
Operational Check of Alternate Braking System
TASK 32-43-00-870-002-A
Bleeding of the High Pressure Alternate Braking System
F Alternate Brake Selector Valve
3. Job Set-up
Subtask 32-43-51-860-051-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
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 right MLG door is open (Ref. AMM TASK 32-12-00-010-001).
   (3) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
   (4) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002).
   (5) Make sure that the reservoir of the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
   (6) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position.
   (7) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the manifold 3016GM.
   (8) Make sure the 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.
Subtask 32-43-51-865-051-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUABCU &/Y BRK/PRESS IND61GGC10
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN30
** ON A/C NOT FOR ALL
121VUHYDRAULIC/BRAKING AND STEERING/SYS2/SPLY4GGM36
121VUHYDRAULIC/BRAKING AND STEERING/SYS2/CTL3GGM35
121VUHYDRAULIC/BRAKING AND STEERING/SYS1/CTL1GGM34
121VUHYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY2GGM33
121VUHYDRAULIC/PARK BRK/CTL/STBY71GGN37
121VUHYDRAULIC/PARK BRK/CTL/NORM70GGN36
121VUHYDRAULIC/Y HYD/PUMP ENG2/MONG3700GDQ37
121VUHYDRAULIC/Y HYD/PUMP ENG2/CTL3701GDQ36
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN31
** ON A/C NOT FOR ALL
123VUY HYD/ELEC/PUMP3802GXAB06
123VUY HYD/ELEC/ELEC PUMP/NORM3801GXAB03
4. Procedure
Subtask 32-43-51-560-050-A ** ON A/C NOT FOR ALL
A. Preparation of the Replacement Component
   (1) Clean the component interfaces and the adjacent area.
   (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.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
   (4) Apply clean Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the new:
   (5) Put the back-up rings (5) in position on the sides of the bobbins (4) without the identification grooves (equipment side).
   (6) Put the packings (6) in position on the sides of the bobbins (4) without the identification grooves (equipment side).
   (7) Put the back-up rings (3) in position on the sides of the bobbins (4) with the identification grooves (manifold side).
   (8) Put the seals (2) in position on the sides of the bobbins (4) with the identification grooves (manifold side).
   (9) Install the bobbins (4) with the identification grooves in the ports of the manifold assembly (1) (Ref. AMM TASK 20-23-21-911-001).
Subtask 32-43-51-420-050-A ** ON A/C NOT FOR ALL
B. Installation of the Alternate Braking Selector Valve
   (1) Remove the blanking plugs.
   (2) Make sure that all the electrical connections are clean and in the correct condition.
   (3) Carefully install the alternate braking selector valve (12) on the manifold assembly (1).
   (4) Install the bonding lead (7), the washers (8), the bolts (9) and the bolt (11).
   (5) TORQUE the bolts (9) and the bolt (11) to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in ) T.
   (6) Connect the electrical connector (10).
Subtask 32-43-51-860-052-A ** ON A/C NOT FOR ALL
C. Preparation for Test
   (1) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002).
   (2) Bleed the alternate brake system (Ref. AMM TASK 32-43-00-870-002).
   (3) If necessary fill the reservoir of the Yellow hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
Subtask 32-43-51-865-052-A ** ON A/C NOT FOR ALL
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUABCU &/Y BRK/PRESS IND61GGC10
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN30
** ON A/C NOT FOR ALL
121VUHYDRAULIC/BRAKING AND STEERING/SYS2/SPLY4GGM36
121VUHYDRAULIC/BRAKING AND STEERING/SYS2/CTL3GGM35
121VUHYDRAULIC/BRAKING AND STEERING/SYS1/CTL1GGM34
121VUHYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY2GGM33
121VUHYDRAULIC/PARK BRK/CTL/STBY71GGN37
121VUHYDRAULIC/PARK BRK/CTL/NORM70GGN36
121VUHYDRAULIC/Y HYD/PUMP ENG2/MONG3700GDQ37
121VUHYDRAULIC/Y HYD/PUMP ENG2/CTL3701GDQ36
** ON A/C NOT FOR ALL
121VUHYDRAULIC/HYD POWER/Y3803GXN31
** ON A/C NOT FOR ALL
123VUY HYD/ELEC/PUMP3802GXAB06
123VUY HYD/ELEC/ELEC PUMP/NORM3801GXAB03
Subtask 32-43-51-710-050-A ** ON A/C NOT FOR ALL
E. Test
   (1) Do an operational test of the alternate braking with anti-skid (Ref. AMM TASK 32-43-00-710-001).
   (2) Make sure that there is no hydraulic fluid leakage from the alternate braking selector valve (12) and/or the manifold assembly (1).
NOTE: Leaks are not permitted.
5. Close-up
Subtask 32-43-51-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Do the electrical bonding of the bonding lead (7) (Ref. AMM TASK 20-28-00-912-802).
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
   (2) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the bolts (9) and the bolt (11).
   (3) Remove the container.
   (4) Remove the WARNING NOTICE(S).
   (5) Remove the access platform(s).
   (6) Make sure that the work area is clean and clear of tools and other items.
   (7) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).
   (8) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 00:49:20 UTC
"Aviabrain" 2025