W DOC AIRBUS | AMM A320F

Installation of the FWD ACT Vent Check-Valve

TASK 28-28-63-400-002-A
Installation of the FWD ACT Vent Check-Valve

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.
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 141
ZONE: 142
FIN: 240QM ** 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
AR
ACCESS PLATFORM 2M (6 FT)
No specific
AR
CONTAINER 5 L (1.32 USGAL)
No specific
AR
PLUG - BLANKING
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ) T
No specific
Torque wrench: range to between 3.22 and 2.69 m.daN (23.75 and 19.84 lbf.ft ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.12AGC2)
Corrosion Preventive Compound-- Soft Film System
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
141
WING CENTER BOX
142
WING CENTER BOX
147AZ
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
10
O-RING
AIPC 28-28-85-44-090
2
O-RING
AIPC 28-28-85-44-090
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 12-11-28-650-003-A
Pressure Refuel with Automatic Control
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
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 28-25-00-650-001-A
Pressure Defuel
TASK 28-25-00-869-001-A
Fuel Transfer
TASK 28-28-00-710-005-A
Operational Test of the Additional Center Tank (ACT) Automatic Transfer System
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 57-17-11-000-001-B
Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-400-001-B
Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door
F FWD ACT Vent-Check-Valve (240QM)
3. Job Set-up
Subtask 28-28-63-860-051-B ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
F FWD ACT Vent-Check-Valve (240QM) ** ON A/C NOT FOR ALL
   (1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
   (2) Make sure that the aircraft electrical circuits are energized.
(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 the L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).
   (5) Make sure that the WARNING NOTICE(S) are 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 ENG/APU FIRE panel 1WD installed on overhead panel 20VU to tell persons not to operate the fire extinguishing system
  • On the Additional Center Tank (ACT) section of control panel 28VU to tell persons not to operate the fuel system.
   (6) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate the MLG doors.
   (7) Make sure that the center fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001).
   (8) Make sure that the right MLG door is open (Ref. AMM TASK 32-12-00-010-001).
   (9) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at the right MLG door.
   (10) Make sure that access cover 147AZ is removed (Ref. AMM TASK 57-17-11-000-001).
   (11) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the FWD ACT vent-check-valve (11).
Subtask 28-28-63-865-054-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
4. Procedure
Subtask 28-28-63-420-051-B ** ON A/C NOT FOR ALL
A. Installation of the FWD ACT Vent-Check-Valve
   (1) Remove the PLUG - BLANKING from the disconnected line ends.
   (2) Install the nut (7) and the retaining ring (8) on the pipe assembly (6).
   (3) Install a new AIPC 28-28-85-44-090 O-RING (10).
   (4) Install the coupling (9) on the FWD ACT vent-check-valve (11) and tighten it.
   (5) Install a new AIPC 28-28-85-44-090 O-RING (2).
   (6) Put the FWD ACT vent-check-valve (11) in position between the machined tee (1) and the pipe assembly (6).
   (7) Apply Corrosion Preventive Compound-- Soft Film System (Material No.12AGC2) to the bolts (5) and (12).
   (8) Install the bonding lead (4), the bolt (5) and the nut (3).
   (9) TORQUE the nut (3) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ) T.
   (10) Install the bolts (12) and the nuts (13).
   (11) TORQUE the nuts (13) to between 3.22 and 2.69 m.daN (23.75 and 19.84 lbf.ft ) T.
   (12) Install the coupling (9) on the nut (7) and tighten it.
   (13) Do a check of the electrical bonding (Ref. AMM TASK 20-28-00-912-802).
Subtask 28-28-63-865-055-A ** ON A/C NOT FOR ALL
B. 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 28-28-63-410-052-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Make sure that there are no unwanted objects and materials, tools or other equipment in the ACT.
   (2) Install access cover 147AZ (Ref. AMM TASK 57-17-11-400-001).
Subtask 28-28-63-650-053-A ** ON A/C NOT FOR ALL
D. Fuel Configuration
   (1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).
Subtask 28-28-63-710-051-A ** ON A/C NOT FOR ALL
E. Do the operational test of the ACT automatic transfer-system (Ref. AMM TASK 28-28-00-710-005).
5. Close-up
Subtask 28-28-63-942-051-A ** ON A/C NOT FOR ALL
A. Removal of Equipment
   (1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Remove the container.
   (4) Remove the access platform(s).
   (5) Remove the WARNING NOTICE(S).
Subtask 28-28-63-410-053-A ** ON A/C NOT FOR ALL
B. Close Access
   (1) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001).
[Rev.10 from 2021] 2026.04.02 06:18:01 UTC
"WTRUIB" 2025