W DOC AIRBUS | AMM A320F

Reactivation of the Vent Valve

TASK 28-28-00-440-006-A
Reactivation of the Vent Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
ZONE: 195
FIN: 234QM ** ON A/C NOT FOR ALL
1. Reason for the Job
MMEL 28-28-06C
ACT VENT VALVE
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 1M(3 FT)
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
195
HYDRAULIC COMPT AND FAIRINGS
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 28-28-62-000-001-A
Removal of the ACT Vent Valve
TASK 28-28-62-400-001-A
Installation of the ACT Vent Valve
TASK 28-28-72-400-001-A
Installation of the ACT Vent-Valve Actuator
F ACT Vent-Valve Actuator
3. Job Set-up
Subtask 28-28-00-860-118-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) When you do maintenance work on the fuel system you must obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
   (2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (3) On the APU section of overhead panel 25VU, make sure that the APU/MASTER SW pushbutton switch is released (the ON legend is off).
   (4) On the FUEL section of panel 40VU, make sure that all tank pump pushbutton switches are released (the OFF legends are on).
   (5) Put the WARNING NOTICE(S) in position:
  • On the APU section of overhead panel 25VU, to tell persons not to operate the APU/MASTER SW pushbutton switch,
  • On the FUEL section of panel 40VU, to tell persons not to operate the fuel system
  • On the ENG/APU FIRE panel located on the overhead panel 20VU, to tell persons not to operate the fire extinguishing system
  • On the Additional Center Tank (ACT) control section of panel 28VU, to tell persons not to operate the fuel system.
   (6) Put the WARNING NOTICE(S) in position to tell persons not to operate the main gear doors.
Subtask 28-28-00-865-091-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
121VUFUEL/ACT VENT VLV/MAN/SPLY62QHL21
121VUFUEL/ACT VENT VLV/AUTO/SPLY61QHL20
Subtask 28-28-00-010-069-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Put an ACCESS PLATFORM 1M(3 FT) in position at zone 195.
   (2) Open access panel 195BB.
4. Procedure
Subtask 28-28-00-440-055-B ** ON A/C NOT FOR ALL
A. Reactivation of the ACT vent valve
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (1) Cut and discard the lockwire from the screw (5).
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
   (2) Loosen the screw (5) and remove the V-clamp (1) from the shaft (7) of the vent valve.
   (3) Remove the T720456 TOOL - VALVE LOCKING from the flange of the vent valve.
   (4) Do an inspection of the component interfaces and the adjacent area.
   (5) Remove and discard the TIE WRAP(S) from the electrical connectors (3) and (4) and from the adjacent electrical harness.
   (6) Remove the CAP-BLANKING from each electrical connector and receptacle.
   (7) Remove the BRIDGE-WIRE (shunt) from the electrical connector (3).
   (8) If the ACT vent valve has a failure in the CLOSED position, replace the unserviceable ACT vent valve (Ref. AMM TASK 28-28-62-000-001) (Ref. AMM TASK 28-28-62-400-001).
   (9) If the actuator (2) of the ACT vent valve is unserviceable, install a new actuator (Ref. AMM TASK 28-28-72-400-001).
   (10) If you do not know the fault:
  • Install the removed actuator (2) (Ref. AMM TASK 28-28-72-400-001)
  • Do the troubleshooting procedure of the ACT vent valve and the actuator (2) and do the applicable repair procedure.
5. Close-up
Subtask 28-28-00-865-092-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUFUEL/ACT VENT VLV/MAN/SPLY62QHL21
121VUFUEL/ACT VENT VLV/AUTO/SPLY61QHL20
Subtask 28-28-00-860-119-A ** ON A/C NOT FOR ALL
B. Put the aircraft back to the serviceable condition.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the WARNING NOTICE(S).
   (3) Close access panel 195BB.
   (4) Remove the access platform(s).
   (5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:17:49 UTC
"WTRUIB" 2025