W DOC AIRBUS | AMM A320F

Installation of the ACT Isolation Valve

TASK 28-28-61-400-001-A
Installation of the ACT Isolation 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: OBEY THE FUEL SAFETY PROCEDURES.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 141
FIN: 236QM ** 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
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.17 and 0.13 m.daN (15.04 and 11.50 lbf.in ) T
No specific
Torque wrench: range to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.03JBA1)
Silicone base Grease-General Purpose - -
(Material No.06ABA1)
Polysulfide Sealant-Fuel Tank Brushable -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
141
WING CENTER BOX
148AZ
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
5
O-RING
AIPC 28-28-85-15-020
15
O-RING
AIPC 28-28-85-31-060
2
O-RING
AIPC 28-28-85-31-060
7
RETAINING RING
AIPC 28-28-85-31-150
14
RETAINING RING
AIPC 28-28-85-31-260
 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 28-28-71-000-001-A
Removal of the ACT Isolation-Valve Actuator
TASK 28-28-71-400-001-A
Installation of the ACT Isolation-Valve Actuator
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 ACT Isolation Valve
3. Job Set-up
Subtask 28-28-61-860-050-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 precautions (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) is (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 the ENG/APU FIRE panel 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 in position to tell persons not to operate the MLG doors.
   (7) Make sure that the fuel center tank is defueled (Ref. AMM TASK 28-25-00-650-001).
   (8) Make sure that the left MLG door is open (Ref. AMM TASK 32-12-00-010-001).
   (9) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position at the left MLG door.
   (10) Make sure that the ACT isolation-valve actuator is removed (Ref. AMM TASK 28-28-71-000-001).
   (11) Make sure that access cover 148AZ or/and the ACT equipment support-door is removed (Ref. AMM TASK 57-17-11-000-001).
   (12) Make sure that the CONTAINER 5 L (1.32 USGAL) is in position below the isolation valve.
4. Procedure
Subtask 28-28-61-420-050-B ** ON A/C NOT FOR ALL
A. Installation of the ACT Isolation Valve
   (1) Put the nuts (8) and (13) in position on the ACT isolation valve (9).
   (2) Install the new AIPC 28-28-85-31-150 RETAINING RING (7) and the new AIPC 28-28-85-31-260 RETAINING RING (14) in the ACT isolation valve (9).
   (3) Apply Silicone base Grease-General Purpose - - (Material No.03JBA1) on the new AIPC 28-28-85-31-060 O-RING (2), the new AIPC 28-28-85-31-060 O-RING (15) and the new AIPC 28-28-85-15-020 O-RING (5).
   (4) Install the new AIPC 28-28-85-31-060 O-RING (2) and the new AIPC 28-28-85-31-060 O-RING (15) on the ACT isolation valve (9).
   (5) Apply Silicone base Grease-General Purpose - - (Material No.03JBA1) on the shaft end of the ACT isolation valve (9).
   (6) Apply Polysulfide Sealant-Fuel Tank Brushable - (Material No.06ABA1) on the heads of the screws (1).
   (7) Install the half coupling (3) on the ACT isolation valve (9).
   (8) Install the ACT isolation valve (9) on the lines (4) and (16). Make sure that the ACT isolation valve (9) is in the close position.
NOTE: The play at the connections between the lines (4) and (16) will help you to connect the line to the ACT isolation valve (9).
   (9) Remove the PLUG-BLANKING from each disconnected line end.
   (10) Install a new AIPC 28-28-85-15-020 O-RING (5) in the groove of the ACT isolation valve (9).
   (11) Install the screws (1).
   (12) TORQUE the screws (1) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ) T.
   (13) Tighten the nuts (8) and (13).
   (14) Connect the bonding strap (6) and install the bolt (10), the washer (11) and the nut (12).
   (15) TORQUE the nut (12) to between 0.17 and 0.13 m.daN (15.04 and 11.50 lbf.in ) T.
   (16) Do a check of the electrical bonding (Ref. AMM TASK 20-28-00-912-802).
Subtask 28-28-61-420-051-A ** ON A/C NOT FOR ALL
B. Install the ACT Isolation-Valve Actuator (Ref. AMM TASK 28-28-71-400-001).
Subtask 28-28-61-410-050-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 148AZ (Ref. AMM TASK 57-17-11-400-001).
Subtask 28-28-61-650-051-A ** ON A/C NOT FOR ALL
D. Fuel Configuration
   (1) Refuel, defuel or transfer the 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 28-28-61-710-050-B ** ON A/C NOT FOR ALL
E. Leak Test
   (1) Make sure that there is no leakage at the ACT isolation valve (9) and at the connections between the lines (4) and (16).
5. Close-up
Subtask 28-28-61-942-050-A ** ON A/C NOT FOR ALL
A. Removal of Equipment
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the container.
   (3) Remove the access platform(s).
   (4) Remove the WARNING NOTICE(S).
Subtask 28-28-61-410-051-A ** ON A/C NOT FOR ALL
B. Close Access
   (1) Close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
   (2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:18:01 UTC
"WTRUIB" 2025