W DOC AIRBUS | AMM A320F

Installation of the Safety Valve

TASK 32-51-21-400-001-A
Installation of the Safety 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.
FIN: 2900GM ** ON A/C NOT FOR ALL
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 0.8 and 0.7 m.daN (70.80 and 61.95 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 - -
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
2
DRUM-EQUIPPED ASSEMBLIES
AIPC 32-51-03-05-120
2
DRUM-EQUIPPED ASSEMBLIES
AIPC 32-51-83-05-080
 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 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 Safety Valve
3. Job Set-up
Subtask 32-51-21-860-051-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 right MLG door is open (Ref. AMM TASK 32-12-00-010-001).
   (3) Make sure 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 that 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.
   (7) Make sure that the reservoir of the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-14-00-614-001).
   (8) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the safety valve (6).
Subtask 32-51-21-865-051-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 32-51-21-560-050-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) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
   (6) Apply the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the seals of the drum-equipped assemblies (2).
   (7) Apply the Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the threads of the bolts (4) and (5).
Subtask 32-51-21-420-050-A ** ON A/C NOT FOR ALL
B. Installation of the Safety Valve
   (1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
   (2) Install the new AIPC 32-51-03-05-120 DRUM-EQUIPPED ASSEMBLIES (2) or AIPC 32-51-83-05-080 DRUM-EQUIPPED ASSEMBLIES (2) in the safety valve (6) (Ref. AMM TASK 20-23-21-911-001).
   (3) Carefully install the safety valve (6) on the manifold (1).
   (4) Install the washers (3) and bolts (4) and (5).
   (5) TORQUE the bolts (4) and (5) to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in ) T.
Subtask 32-51-21-860-052-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) If necessary, fill the reservoir of the Yellow hydraulic system to the correct level (Ref. AMM TASK 12-12-29-611-001).
Subtask 32-51-21-865-052-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 32-51-21-710-050-A ** ON A/C NOT FOR ALL
E. Test
   (1) Do an 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 safety valve (6).
NOTE: Leaks are not permitted.
5. Close-up
Subtask 32-51-21-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Remove the CONTAINER 5 L (1.32 USGAL).
   (2) Remove the WARNING NOTICE(S).
   (3) Remove the access platform(s).
   (4) Make sure that the work area is clean and clear of tools and other items.
   (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 00:51:31 UTC
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