W DOC AIRBUS | AMM A320F

Removal of the Normal Brake Safety-Valve

TASK 32-42-36-000-001-A
Removal of the Normal Brake Safety-Valve

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: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
FIN: 2616GM
FIN: 2617GM
FIN: 2618GM
FIN: 2619GM
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 3M (10 FT)
No specific
1
BAG - PLASTIC
No specific
AR
CAP - BLANKING
No specific
1
CONTAINER 1 L (1/4 USGAL)
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
F Normal Brake Safety-Valve
3. Job Set-up
Subtask 32-42-36-941-054-A
A. Safety Precautions
   (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (2) Make sure that the ground safety locks are on the landing gear (Ref. AMM TASK 32-00-00-481-001).
   (3) On the panel 400VU:
  • make sure that the landing-gear control-lever 6GA is in the DOWN position
  • put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
   (4) Put WARNING NOTICE(S) in position to tell persons not to:
  • operate the landing gear doors
  • pressurize the Green and Yellow hydraulic systems
  • pressurize the Green and Yellow hydraulic system reservoirs.
Subtask 32-42-36-860-055-A
B. Aircraft Maintenance Configuration
   (1) Depressurize the Green and Yellow hydraulic system reservoirs (Ref. AMM TASK 29-14-00-614-001).
   (2) Make sure that the Green and the Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-00-00-864-001).
Subtask 32-42-36-865-050-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C 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
Subtask 32-42-36-010-051-A
D. Get Access
   (1) Put an ACCESS PLATFORM 3M (10 FT) in position at the applicable main landing gear, at zone 731(741).
4. Procedure
Subtask 32-42-36-020-050-A
A. Removal of the Normal Brake Safety-Valve

F Normal Brake Safety-Valve
   (1) Put a CONTAINER 1 L (1/4 USGAL) below the applicable normal brake safety-valve (1).
   (2) Remove the bolts (10) and the normal brake safety-valve (1).
   (3) Remove the bobbin (4) from the normal brake manifold.
   (4) Remove and discard the packings (2) and the back-up rings (3) from the bobbin (4).
   (5) Remove the filter (5) from the normal brake manifold.
   (6) Remove and discard the packings (6) and (9), the retainer (7) and the back-up ring (8) from the filter (5).
   (7) Put the filter (5) and the bobbin (4) in a sealed BAG - PLASTIC
   (8) Attach the sealed BAG - PLASTIC to the normal brake safety-valve (1).
   (9) Install a CAP - BLANKING in the normal brake manifold and the normal brake safety-valve (1).
   (10) Prevent damage to the component interfaces and the adjacent area.
[Rev.10 from 2021] 2026.04.01 12:31:52 UTC
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