W DOC AIRBUS | AMM A320F

Reactivation of the Reservoir Air Pressure Switches of the Green and Yellow Hydraulic System

TASK 29-34-00-440-001-A
Reactivation of the Reservoir Air Pressure Switches of the Green and Yellow Hydraulic System

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: 1384GH
FIN: 3384GH
1. Reason for the Job
MMEL 29-09-04A
HYD G(B)(Y) RSVR LO AIR PR ALERT
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
196BB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 29-14-00-614-002-A
Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01
Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
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
F Reservoir Air Pressure Switches of the Green and Yellow Hydraulic System
3. Job Set-up
Subtask 29-34-00-865-052-A
A. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1384GH (AIR PRESSURE SWITCH)
121VUHYDRAULIC/G HYD/PUMP ENG1/MONG1702GKR34
** ON A/C NOT FOR ALL
121VUHYDRAULIC/G HYD/PUMP ENG1/MONG1702GKR33
** ON A/C ALL
FOR FIN: 3384GH (AIR PRESSURE SWITCH)
121VUHYDRAULIC/Y HYD/PUMP ENG2/MONG3700GDQ37
Subtask 29-34-00-010-051-A
B. Get Access
   (1) Open the applicable access door for the pressure switch:
NOTE: Access is better from the Right Hand (RH) side.
   (2) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position to be satisfactory for the Green reservoir.
4. Procedure
Subtask 29-34-00-440-050-A
A. Reactivation of the Reservoir Air Pressure-Switches
F Reservoir Air Pressure Switches of the Green and Yellow Hydraulic System
   (1) Cut and discard the tie-wrap which attaches the cable of the pressure switch 1384GH or 3384GH to the structure.
   (2) Clean the component interfaces and the adjacent area.
   (3) Do an inspection of the component interfaces and the adjacent area.
   (4) Remove the protective caps from the connector (1) and the receptacle.
   (5) Make sure that all the electrical connections are clean and in the correct condition.
   (6) Connect the applicable electrical connector (1) 1384GH-A or 3384GH-A to the related pressure switch.
   (7) Do the troubleshooting of the air pressure indication-system and do the applicable corrective procedure.
   (8) Make sure that the reservoir is pressurized with air to the correct pressure (Ref. AMM TASK 29-14-00-614-002).
5. Close-up
Subtask 29-34-00-410-051-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
   (3) Close the access door(s) as applicable:
   (4) Remove the warning notice from the flight compartment.
Subtask 29-34-00-865-053-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1384GH (AIR PRESSURE SWITCH)
121VUHYDRAULIC/G HYD/PUMP ENG1/MONG1702GKR34
** ON A/C NOT FOR ALL
121VUHYDRAULIC/G HYD/PUMP ENG1/MONG1702GKR33
** ON A/C ALL
FOR FIN: 3384GH (AIR PRESSURE SWITCH)
121VUHYDRAULIC/Y HYD/PUMP ENG2/MONG3700GDQ37
[Rev.10 from 2021] 2026.04.01 00:28:00 UTC
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