W DOC AIRBUS | AMM A320F

Removal of the Overpressure Protector

TASK 28-12-41-000-001-A
Removal of the Overpressure Protector

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.
FIN: 46QM
FIN: 47QM
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 4M (13 FT)
No specific
AR
SAFETY BARRIER(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [46QM] (PROTECTOR-OVERPRESSURE, L VENT SURGE TK)
550CB
FOR [47QM] (PROTECTOR-OVERPRESSURE, R VENT SURGE TK)
650CB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 28-10-00-910-001-A
Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A
Access to the Fuel Tanks and the Work Areas
TASK 28-12-45-000-001-A
Removal of the Panel Assembly
TASK 28-25-00-650-003-A
To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01
To Drain Remaining Fuel from the Wing Tanks and the Center Tank
F Overpressure Protector - Vent Surge Tank. ** ON A/C NOT FOR ALL
F Overpressure Protector - Vent Surge Tank. ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 28-12-41-941-064-A
A. Safety Precautions
WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
   (1) You must obey the fuel safety procedures when you do work in the fuel tank (Ref. AMM TASK 28-10-00-910-001).
   (2) Put the SAFETY BARRIER(S) in position.
Subtask 28-12-41-680-050-A
B. Drain the Fuel
   (1) Drain the remaining fuel from the applicable surge tank (Ref. AMM TASK 28-25-00-650-003).
Subtask 28-12-41-010-054-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Put the ACCESS PLATFORM 4M (13 FT) in position below the applicable zone 550 or 650.
   (2) Remove the applicable access panel (Ref. AMM TASK 28-12-45-000-001) and (Ref. AMM TASK 28-10-00-910-002):

     (a) FOR [46QM] (PROTECTOR-OVERPRESSURE, L VENT SURGE TK)
     (b) FOR [47QM] (PROTECTOR-OVERPRESSURE, R VENT SURGE TK)
Subtask 28-12-41-010-054-B ** ON A/C NOT FOR ALL
C. Get Access
CAUTION: WHEN YOU PUT THE ACCESS PLATFORM IN POSITION, BE CAREFUL NOT TO CAUSE DAMAGE TO THE VORTEX GENERATOR.
   (1) Put the ACCESS PLATFORM 4M (13 FT) in position below the applicable zone 550 or 650.
   (2) Remove the applicable access panel (Ref. AMM TASK 28-12-45-000-001) and (Ref. AMM TASK 28-10-00-910-002):

     (a) FOR [46QM] (PROTECTOR-OVERPRESSURE, L VENT SURGE TK)
     (b) FOR [47QM] (PROTECTOR-OVERPRESSURE, R VENT SURGE TK)
4. Procedure
Subtask 28-12-41-020-050-A ** ON A/C NOT FOR ALL
A. Removal of the Overpressure Protector 46QM (47QM)
   (1) Remove the nuts (7) and the bolts (4).
   (2) Remove the overpressure protector (1) from the access panel (3).
   (3) Remove and discard the O-rings (2) and (6).
Subtask 28-12-41-020-050-B ** ON A/C NOT FOR ALL
A. Removal of the Overpressure Protector 46QM (47QM)
   (1) Remove the nuts (2) and the bolts (5) and (6).
   (2) Remove the overpressure protector (1) and the vortex generator (7) from the access panel (4).
   (3) Remove and discard the O-rings (3) and (9).
[Rev.10 from 2021] 2026.04.02 07:02:05 UTC
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