W DOC AIRBUS | AMM A320F

Installation of the Selector Valve

TASK 32-51-23-400-002-A
Installation of the 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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
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.
ZONE: 744
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
2
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.03PBC1)
Lubricant-Anti Seize MoS2 and Petrolatum -
(Material No.06LDG2)
Non Hardening Jointing Putty-High Temp. Area - Structure
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
744
MAIN DOOR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
5
O-RINGS
AIPC 32-51-23-01-060
6
BACK-UP RINGS
AIPC 32-51-23-01-070
9
O-RINGS
AIPC 32-51-23-01-080
8
BACK-UP RINGS
AIPC 32-51-23-01-090
 E. 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 32-51-00-720-003-A
Functional Test of the Nose Wheel Steering with the Handwheel
F Selector Valve Assembly
3. Job Set-up
Subtask 32-51-23-010-053-A ** ON A/C NOT FOR ALL
A. Get Access
   (1) Make sure that the right MLG door is open (Ref. AMM TASK 32-12-00-010-001).
   (2) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position.
Subtask 32-51-23-860-056-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
   (2) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002).
   (3) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001).
   (4) Make sure that WARNING NOTICE(S) are 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.
   (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 CONTAINER 5 L (1.32 USGAL) is in position below the selector valve (2).
Subtask 32-51-23-865-056-A ** ON A/C NOT FOR ALL
C. 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 32-51-23-560-052-A ** ON A/C NOT FOR ALL
A. Preparation of the Replacement Selector Valve
   (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) Prepare the bobbins (7) (Ref. AMM TASK 20-23-21-911-001) as follows:
     (a) Install the new AIPC 32-51-23-01-070 BACK-UP RINGS (6) and the new AIPC 32-51-23-01-090 BACK-UP RINGS (8) on the bobbins (7).
     (b) Install the new AIPC 32-51-23-01-060 O-RINGS (5) and the new AIPC 32-51-23-01-080 O-RINGS (9) on the bobbins (7).
   (5) Apply Non Hardening Jointing Putty-High Temp. Area - Structure (Material No.06LDG2) to the threads of the bolts (3).
   (6) Remove the blanking plugs from the ports of the new selector valve (2) and the manifold (10).
Subtask 32-51-23-420-052-A ** ON A/C NOT FOR ALL
B. Installation of the Selector Valve
   (1) Install the bobbins (7) in the manifold (10) (Ref. AMM TASK 20-23-21-911-001).
   (2) Apply a layer of Lubricant-Anti Seize MoS2 and Petrolatum - (Material No.03PBC1) to the mating surfaces of the selector valve (2) and the manifold (10).
   (3) Put the selector valve (2) in position and install the washers (4) and the bolts (3).
   (4) Put the bonding strap (11) in position and install the washer (12) and the bolt (13) (Ref. AMM TASK 20-28-00-912-802).
   (5) TORQUE the bolts (3) and (13) to to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in ) T.
   (6) Remove the CAP-BLANKING from each electrical connector and receptacle.
   (7) Make sure that all the electrical connections are clean and in the correct condition.
   (8) Connect the electrical connector (1) to the selector valve (2).
Subtask 32-51-23-860-057-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) If necessary, fill the reservoir of the Yellow hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
Subtask 32-51-23-865-057-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 32-51-23-710-052-A ** ON A/C NOT FOR ALL
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 (2) and/or the manifold (10).
NOTE: Leaks are not permitted.
5. Close-up
Subtask 32-51-23-410-052-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Remove the container.
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the access platform(s).
   (5) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).
   (6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 00:51:41 UTC
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