DOC AIRBUS | AMM A320FRemoval of the ACT Transfer-Thermal Relief-Valve
TASK 28-28-46-000-001-A
Removal of the ACT Transfer-Thermal Relief-Valve
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 28-28-46-941-050-A ** ON A/C NOT FOR ALL
Subtask 28-28-46-020-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:17:59 UTC
Removal 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.
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
| 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 | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 141 | WING CENTER BOX |
| 150 | AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT |
| 148AZ |
| 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 28-00-00-910-001-A | Fuel Safety Procedures |
| TASK 28-10-00-910-002-A | Access to the Fuel Tanks and the Work Areas |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 32-12-00-010-001-A | Open the Main Gear Doors for Access |
| TASK 57-17-11-000-001-B | Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door |
ACT Transfer-Thermal Relief-ValveSubtask 28-28-46-941-050-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the APU section of overhead panel 25VU, make sure that the APU/MASTER SW pushbutton switch is released (the ON legend is off).
(3) On the FUEL section of HYD/FUEL panel 40VU, make sure that all the L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).
(4) Put the WARNING NOTICE(S) in position:
(6) Put a WARNING NOTICE(S) in position to tell persons not to operate the Main Landing Gear (MLG) doors.
Subtask 28-28-46-650-051-A ** ON A/C NOT FOR ALL Subtask 28-28-46-865-050-A ** ON A/C NOT FOR ALL (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the APU section of overhead panel 25VU, make sure that the APU/MASTER SW pushbutton switch is released (the ON legend is off).
(3) On the FUEL section of HYD/FUEL panel 40VU, make sure that all the L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).
(4) 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 section of overhead panel 20VU, to tell persons not to operate the fire extinguishing system.
(6) Put a WARNING NOTICE(S) in position to tell persons not to operate the Main Landing Gear (MLG) doors.
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 28-28-46-010-050-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. Get Access
(1) Open the right MLG door (Ref. AMM TASK 32-12-00-010-001).
(2) Put an ACCESS PLATFORM 2M (6 FT) in position at the right MLG door.
(3) Get access to the fuel center tank (Ref. AMM TASK 28-10-00-910-002):
4. Procedure(1) Open the right MLG door (Ref. AMM TASK 32-12-00-010-001).
(2) Put an ACCESS PLATFORM 2M (6 FT) in position at the right MLG door.
(3) Get access to the fuel center tank (Ref. AMM TASK 28-10-00-910-002):
- Remove access cover 148AZ (Ref. AMM TASK 57-17-11-000-001).
Subtask 28-28-46-020-050-A ** ON A/C NOT FOR ALL
A. Removal of the Relief Valve (169QM)
(1) Put a CONTAINER 5 L (1.32 USGAL) below the relief valve (3).
(2) Remove the relief valve (3).
(3) Remove and discard the O-ring (2).
(4) Put the PLUG-BLANKING in each disconnected line end.
Subtask 28-28-46-020-050-C ** ON A/C NOT FOR ALL (1) Put a CONTAINER 5 L (1.32 USGAL) below the relief valve (3).
(2) Remove the relief valve (3).
(3) Remove and discard the O-ring (2).
(4) Put the PLUG-BLANKING in each disconnected line end.
A. Removal of the Relief Valve (237QM and 238QM)
(1) Put the CONTAINER 5 L (1.32 USGAL) below the relief valve (3).
(2) Remove the relief valve (3).
(3) Remove and discard the O-ring (2).
(4) Put the PLUG-BLANKING in each disconnected line end.
(1) Put the CONTAINER 5 L (1.32 USGAL) below the relief valve (3).
(2) Remove the relief valve (3).
(3) Remove and discard the O-ring (2).
(4) Put the PLUG-BLANKING in each disconnected line end.