DOC AIRBUS | AMM A320FInstallation of the ACT Transfer-Thermal Relief-Valve
TASK 28-28-46-400-001-A
Installation of the ACT Transfer-Thermal Relief-Valve
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 28-28-46-860-050-A ** ON A/C NOT FOR ALL
Subtask 28-28-46-420-050-A ** ON A/C NOT FOR ALL
Subtask 28-28-46-942-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:17:59 UTC
Installation of the ACT Transfer-Thermal Relief-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
ZONE: 150
FIN: 169QM ** ON A/C NOT FOR ALL
FIN: 237QM ** ON A/C NOT FOR ALL
FIN: 238QM ** ON A/C NOT FOR ALL
1. Reason for the JobZONE: 150
FIN: 169QM ** ON A/C NOT FOR ALL
FIN: 237QM ** ON A/C NOT FOR ALL
FIN: 238QM ** ON A/C NOT FOR ALL
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.01ABA1) | Turbine Fuel-- Kerosene - |
| FOR [237QM] (VALVE-THERMAL RELIEF, FWD ACT TRANSFER) | |
| (Material No.01ABA1) | Turbine Fuel-- Kerosene - |
| FOR [238QM] (VALVE-THERMAL RELIEF, ACT TRANSFER) | |
| (Material No.01ABA1) | Turbine Fuel-- Kerosene - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 141 | WING CENTER BOX |
| 150 | AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT |
| 148AZ |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 2 | O-RING | AIPC 28-28-05-04-180 |
| 2 | O-RING | AIPC 28-28-85-20-180 |
| FOR [237QM] (VALVE-THERMAL RELIEF, FWD ACT TRANSFER) | ||
| 2 | O-RING | AIPC 28-28-85-31-270 |
| FOR [238QM] (VALVE-THERMAL RELIEF, ACT TRANSFER) | ||
| 2 | O-RING | AIPC 28-28-85-20-180 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-11-28-650-003-A | Pressure Refuel with Automatic Control |
| 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 28-25-00-710-007-A | Operational Test of the ACT Transfer-Thermal Relief-Valve |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| 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 |
ACT Transfer-Thermal Relief-ValveSubtask 28-28-46-860-050-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 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 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 overhead 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:
(7) Make sure that the fuel center 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 148AZ 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 relief valve.
Subtask 28-28-46-865-051-A ** ON A/C NOT FOR ALL (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) 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 overhead 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 overhead panel 40VU to tell persons not to operate the fuel system
- On the ENG/APU FIRE panel of overhead panel 20VU to tell persons not to operate the fire extinguishing system.
(7) Make sure that the fuel center 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 148AZ 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 relief valve.
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/RFL/DFL/SPLY | 2QU | L24 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L23 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L23 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L22 |
Subtask 28-28-46-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Relief Valve (169QM)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-28-05-04-180 O-RING (2).
(5) Install the new O-ring (2) on the relief valve (3).
(6) Install the relief valve (3).
(7) TORQUE the relief valve (3) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )
.
Subtask 28-28-46-420-050-B ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-28-05-04-180 O-RING (2).
(5) Install the new O-ring (2) on the relief valve (3).
(6) Install the relief valve (3).
(7) TORQUE the relief valve (3) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )
. A. Installation of the Relief Valve (237QM and 238QM)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) FOR [237QM] (VALVE-THERMAL RELIEF, FWD ACT TRANSFER)
Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to a new AIPC 28-28-85-31-270 O-RING (2).
(5) FOR [238QM] (VALVE-THERMAL RELIEF, ACT TRANSFER)
Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to a new AIPC 28-28-85-20-180 O-RING (2).
(6) Install a new O-ring (2) on the relief valve (3).
(7) Install the relief valve (3).
(8) TORQUE the relief valve (3) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in ).
Subtask 28-28-46-420-050-D ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) FOR [237QM] (VALVE-THERMAL RELIEF, FWD ACT TRANSFER)
Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to a new AIPC 28-28-85-31-270 O-RING (2).
(5) FOR [238QM] (VALVE-THERMAL RELIEF, ACT TRANSFER)
Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to a new AIPC 28-28-85-20-180 O-RING (2).
(6) Install a new O-ring (2) on the relief valve (3).
(7) Install the relief valve (3).
(8) TORQUE the relief valve (3) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )
. A. Installation of the ACT Transfer-Thermal Relief-Valve (238QM)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-28-85-20-180 O-RING (2).
(5) Install the new O-ring (2) on the relief valve (3).
(6) Install the relief valve (3).
(7) TORQUE the relief valve (3) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in ).
Subtask 28-28-46-410-051-A ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-28-85-20-180 O-RING (2).
(5) Install the new O-ring (2) on the relief valve (3).
(6) Install the relief valve (3).
(7) TORQUE the relief valve (3) to between 1.32 and 1.21 m.daN (116.81 and 107.08 lbf.in )
.B. Close Access
(1) Remove the container.
(2) Make sure that there are no unwanted objects and materials, tools or other equipment in the center tank.
(3) Install access cover 148AZ (Ref. AMM TASK 57-17-11-400-001).
Subtask 28-28-46-865-052-A ** ON A/C NOT FOR ALL (1) Remove the container.
(2) Make sure that there are no unwanted objects and materials, tools or other equipment in the center tank.
(3) Install access cover 148AZ (Ref. AMM TASK 57-17-11-400-001).
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-28-46-650-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L24 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L23 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L23 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L22 |
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 28-28-46-710-050-A ** ON A/C NOT FOR ALL (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).
E. Test
(1) If the ACT is installed:
(a) Do an operational test of the ACT transfer-thermal relief-valve (Ref. AMM TASK 28-25-00-710-007).
5. Close-up(1) If the ACT is installed:
(a) Do an operational test of the ACT transfer-thermal relief-valve (Ref. AMM TASK 28-25-00-710-007).
Subtask 28-28-46-942-050-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 access platform(s).
(3) Remove the WARNING NOTICE(S).
Subtask 28-28-46-410-050-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
B. Close Access
(1) Close the right 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).
(1) Close the right 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).