DOC AIRBUS | AMM A320FInstallation of the Additional Center Tank (ACT) Inward Pressure-Relief-Valve
TASK 28-12-56-400-003-A
Installation of the Additional Center Tank (ACT) Inward Pressure-Relief-Valve
Self explanatory
2. Job Set-up Information
A. Consumable Materials
B. Work Zones and Access Panels
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 28-12-56-860-057-C ** ON A/C NOT FOR ALL
Subtask 28-12-56-420-052-B ** ON A/C NOT FOR ALL
Subtask 28-12-56-410-052-C ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:17:13 UTC
Installation of the Additional Center Tank (ACT) Inward Pressure-Relief-Valve
WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03FAB1) | Mineral Oil base Grease-- Vaseline or Petrolatum - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 150 | AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT |
| 160 | BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 4 | FLAT SEALING | AIPC 28-11-27-22-100 |
| 7 | O-RING | AIPC 28-11-27-22-130 |
| 4 | FLAT SEALING | AIPC 28-12-84-12-220 |
| 7 | O-RING | AIPC 28-12-84-12-230 |
| REFERENCE | DESIGNATION |
|---|---|
| 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 |
| FOR [229QM1] (VALVE-INWARD PRESSURE RELIEF, ACT1) | |
| TASK 28-11-27-000-002-A | Removal of Additional Center Tank No.1 (ACT AFT1) |
| TASK 28-11-27-400-002-A | Installation of Additional Center Tank No.1 (ACT AFT1) |
| FOR [229QM2] (VALVE-INWARD PRESSURE RELIEF, ACT2) | |
| TASK 28-11-27-000-003-A | Removal of the Additional Center Tank No.2 (ACT AFT2) |
| TASK 28-11-27-400-003-A | Installation of the Additional Center Tank No.2 (ACT AFT2) |
ACT Inward Pressure-Relief-ValveSubtask 28-12-56-860-057-C ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Obey the fuel safety procedures (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 refuel/defuel control panels 801VU and 800VU, on fuel control panel 40VU and on ACT control panel 28VU:
(a) Make sure that the warning notices are in position to tell persons not to operate the refuel/defuel system.
(4) FOR [229QM1] (VALVE-INWARD PRESSURE RELIEF, ACT1)
(a) Make sure that ACT AFT1 is removed (Ref. AMM TASK 28-11-27-000-002).
(5) FOR [229QM2] (VALVE-INWARD PRESSURE RELIEF, ACT2)
(a) Make sure that ACT AFT2 is removed (Ref. AMM TASK 28-11-27-000-003).
Subtask 28-12-56-865-073-A ** ON A/C NOT FOR ALL (1) Obey the fuel safety procedures (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 refuel/defuel control panels 801VU and 800VU, on fuel control panel 40VU and on ACT control panel 28VU:
(a) Make sure that the warning notices are in position to tell persons not to operate the refuel/defuel system.
(4) FOR [229QM1] (VALVE-INWARD PRESSURE RELIEF, ACT1)
(a) Make sure that ACT AFT1 is removed (Ref. AMM TASK 28-11-27-000-002).
(5) FOR [229QM2] (VALVE-INWARD PRESSURE RELIEF, ACT2)
(a) Make sure that ACT AFT2 is removed (Ref. AMM TASK 28-11-27-000-003).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/ACT AIR SOV/MAN/SPLY | 64QH | J20 |
| 121VU | FUEL/ACT AIR SOV/AUTO/SPLY | 63QH | J19 |
| 121VU | FUEL/ACT XFR VLV/MOT2 | 66QH | J18 |
| 121VU | FUEL/ACT XFR VLV/MOT1 | 65QH | J17 |
| 121VU | FUEL/INLET VLV MOT2 AUTO SP AFT 2 | 44QH2 | K16 |
| 121VU | FUEL/INLET VLV MOT2 AUTO SP AFT 1 | 44QH1 | K15 |
| 121VU | FUEL/INLET VLV/MOT1/AFT 2 | 84QH | L29 |
| 121VU | FUEL/INLET VLV/MOT1/MAN SPLY/AFT 1 | 46QH | L28 |
| 121VU | FUEL/HI/LVL/SPLY | 1QJ | L24 |
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L23 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L22 |
| 121VU | FUEL/ACT VENT VLV/MAN/SPLY | 62QH | L21 |
| 121VU | FUEL/ACT VENT VLV/AUTO/SPLY | 61QH | L20 |
| 121VU | FUEL/INLET VLV MAN CTL SPLY AFT 2 | 81QH | L16 |
| 121VU | FUEL/INLET VLV MAN CTL SPLY AFT 1 | 45QH | L15 |
| 121VU | FUEL/ACT/FUEL PUMP/SPLY | 25QH | Q29 |
Subtask 28-12-56-420-052-B ** ON A/C NOT FOR ALL
A. Installation of the Inward Pressure Relief Valve
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Apply Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-12-84-12-230 O-RING (7) or the new AIPC 28-11-27-22-130 O-RING (7)
(4) Install the new O-ring (7) in the valve housing (8).
(a) Make sure that the O-ring (7) is correctly installed.
(5) Prepare equipment for electrical bonding (Ref. AMM TASK 20-28-00-912-802).
(6) Put the relief valve (6) in position on the flange (9) in the valve housing (8).
(7) Install the washers (5) and (10) and the bolts (11) in the relief valve (6).
(8) Apply surface protection on bonding bolts (11) (Ref. AMM TASK 20-28-00-912-802).
(9) Apply Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-12-84-12-220 FLAT SEALING (4) or the new AIPC 28-11-27-22-100 FLAT SEALING (4)
(10) Install the flat sealing (4) on the valve housing (8).
(a) Make sure that the flat sealing (4) is correctly installed.
(11) Put the cover (3) on the valve housing (8).
(12) Install the bolts (1), the washers (2) and (12) in sequence opposite to one another in the cover (3) of the valve housing (8) and hand tighten only.
(13) When all the bolts (1) are installed, then fully tighten them in sequence opposite to one another.
(14) Apply surface protection on bonding bolts (1) (Ref. AMM TASK 20-28-00-912-802).
Subtask 28-12-56-865-074-A ** ON A/C NOT FOR ALL NOTE: The installation procedure for each inward pressure relief valve is the same.
(1) Clean the component interfaces and the adjacent area.(2) Do an inspection of the component interfaces and the adjacent area.
(3) Apply Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-12-84-12-230 O-RING (7) or the new AIPC 28-11-27-22-130 O-RING (7)
(4) Install the new O-ring (7) in the valve housing (8).
(a) Make sure that the O-ring (7) is correctly installed.
(5) Prepare equipment for electrical bonding (Ref. AMM TASK 20-28-00-912-802).
(6) Put the relief valve (6) in position on the flange (9) in the valve housing (8).
(7) Install the washers (5) and (10) and the bolts (11) in the relief valve (6).
(8) Apply surface protection on bonding bolts (11) (Ref. AMM TASK 20-28-00-912-802).
(9) Apply Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-12-84-12-220 FLAT SEALING (4) or the new AIPC 28-11-27-22-100 FLAT SEALING (4)
(10) Install the flat sealing (4) on the valve housing (8).
(a) Make sure that the flat sealing (4) is correctly installed.
(11) Put the cover (3) on the valve housing (8).
(12) Install the bolts (1), the washers (2) and (12) in sequence opposite to one another in the cover (3) of the valve housing (8) and hand tighten only.
(13) When all the bolts (1) are installed, then fully tighten them in sequence opposite to one another.
(14) Apply surface protection on bonding bolts (1) (Ref. AMM TASK 20-28-00-912-802).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-12-56-710-052-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/ACT AIR SOV/MAN/SPLY | 64QH | J20 |
| 121VU | FUEL/ACT AIR SOV/AUTO/SPLY | 63QH | J19 |
| 121VU | FUEL/ACT XFR VLV/MOT2 | 66QH | J18 |
| 121VU | FUEL/ACT XFR VLV/MOT1 | 65QH | J17 |
| 121VU | FUEL/INLET VLV MOT2 AUTO SP AFT 2 | 44QH2 | K16 |
| 121VU | FUEL/INLET VLV MOT2 AUTO SP AFT 1 | 44QH1 | K15 |
| 121VU | FUEL/INLET VLV/MOT1/AFT 2 | 84QH | L29 |
| 121VU | FUEL/INLET VLV/MOT1/MAN SPLY/AFT 1 | 46QH | L28 |
| 121VU | FUEL/HI/LVL/SPLY | 1QJ | L24 |
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L23 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L22 |
| 121VU | FUEL/ACT VENT VLV/MAN/SPLY | 62QH | L21 |
| 121VU | FUEL/ACT VENT VLV/AUTO/SPLY | 61QH | L20 |
| 121VU | FUEL/INLET VLV MAN CTL SPLY AFT 2 | 81QH | L16 |
| 121VU | FUEL/INLET VLV MAN CTL SPLY AFT 1 | 45QH | L15 |
| 121VU | FUEL/ACT/FUEL PUMP/SPLY | 25QH | Q29 |
C. Test(s)
(1) Do the operational test of the ACT inward pressure-relief-valve (Ref. AMM D/O 28-28-00-71).
5. Close-up(1) Do the operational test of the ACT inward pressure-relief-valve (Ref. AMM D/O 28-28-00-71).
Subtask 28-12-56-410-052-C ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) FOR [229QM1] (VALVE-INWARD PRESSURE RELIEF, ACT1)
(a) Install ACT AFT1 (Ref. AMM TASK 28-11-27-400-002).
(3) FOR [229QM2] (VALVE-INWARD PRESSURE RELIEF, ACT2)
(a) Install ACT AFT2 (Ref. AMM TASK 28-11-27-400-003).
Subtask 28-12-56-860-058-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) FOR [229QM1] (VALVE-INWARD PRESSURE RELIEF, ACT1)
(a) Install ACT AFT1 (Ref. AMM TASK 28-11-27-400-002).
(3) FOR [229QM2] (VALVE-INWARD PRESSURE RELIEF, ACT2)
(a) Install ACT AFT2 (Ref. AMM TASK 28-11-27-400-003).
B. Put the aircraft back to the serviceable condition.
(1) From refuel/defuel control panels 801VU and 800VU, fuel control panel 40VU and ACT control panel 28VU:
(a) Remove the WARNING NOTICE(S).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) From refuel/defuel control panels 801VU and 800VU, fuel control panel 40VU and ACT control panel 28VU:
(a) Remove the WARNING NOTICE(S).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).