DOC AIRBUS | AMM A320FInstallation of the ACT Fuel-Transfer-Pump Pressure-Switch
TASK 28-28-11-400-001-A
Installation of the ACT Fuel-Transfer-Pump Pressure-Switch
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 28-28-11-860-050-A ** ON A/C NOT FOR ALL
Subtask 28-28-11-420-050-A ** ON A/C NOT FOR ALL
Subtask 28-28-11-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 07:27:38 UTC
Installation of the ACT Fuel-Transfer-Pump Pressure-Switch
WARNING:
BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES.
IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER.
IF NECESSARY, GET MEDICAL HELP.
AIRCRAFT FUEL IS POISONOUS.
WARNING:
DO NOT GET YOUR CLOTHES SOAKED WITH FUEL.
WARNING:
MAKE SURE THAT YOU HAVE THE CORRECT FIRE FIGHTING EQUIPMENT AVAILABLE.
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.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.01ABA1) | Turbine Fuel-- Kerosene - |
| (Material No.03FAB1) | Mineral Oil base Grease-- Vaseline or Petrolatum - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14QFB1) | Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 147 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 150 | AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 2 | O-RING | AIPC 28-28-03-04-090 |
| 5 | O-RING | AIPC 28-28-03-04-090 |
| 3 | O-RING | AIPC 28-28-83-04-090 |
| 6 | O-RING | AIPC 28-28-83-04-090 |
| 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 28-25-00-869-001-A | Fuel Transfer |
| TASK 28-28-00-710-003-A | Operational Test of the ACT Fuel Transfer-Pump Pressure Switch |
| 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 57-17-11-000-003-A | Removal of the Protective Cover of the ACT-Equipment Support Door |
| TASK 57-17-11-400-003-A | Installation of the Protective Cover of the ACT-Equipment Support Door |
ACT Fuel Transfer-Pump Pressure-SwitchSubtask 28-28-11-860-050-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 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 on the APU section of overhead panel 25VU, to tell persons not to operate the APU/MASTER SW pushbutton switch.
(6) Make sure that the WARNING NOTICE(S) is on the FUEL section of panel 40VU, to tell persons not to operate the fuel system.
(7) Make sure that WARNING NOTICE(S) is on the ENG/APU FIRE panel located on overhead panel 20VU, to tell persons not to operate the fire extinguishing system.
(8) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the Main Landing Gear (MLG) doors.
(9) Make sure that the left MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(10) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at the left MLG door.
(11) Make sure that the protective cover of the ACT-equipment support door is removed (Ref. AMM TASK 57-17-11-000-003).
(12) Make sure that the CONTAINER 1 L (1/4 USGAL) is in position below the pressure switch.
Subtask 28-28-11-865-051-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 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 on the APU section of overhead panel 25VU, to tell persons not to operate the APU/MASTER SW pushbutton switch.
(6) Make sure that the WARNING NOTICE(S) is on the FUEL section of panel 40VU, to tell persons not to operate the fuel system.
(7) Make sure that WARNING NOTICE(S) is on the ENG/APU FIRE panel located on overhead panel 20VU, to tell persons not to operate the fire extinguishing system.
(8) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the Main Landing Gear (MLG) doors.
(9) Make sure that the left MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(10) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at the left MLG door.
(11) Make sure that the protective cover of the ACT-equipment support door is removed (Ref. AMM TASK 57-17-11-000-003).
(12) Make sure that the CONTAINER 1 L (1/4 USGAL) is in position below the pressure switch.
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 |
| 121VU | ACT PUMP SUPPLY | 25QH | Q29 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L23 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L22 |
| 121VU | FUEL/ACT/FUEL PUMP/SPLY | 25QH | Q29 |
Subtask 28-28-11-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Pressure Switch
(1) Preparation for installation
(a) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the parts retained from the removed component are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(d) Lubricate the new O-rings (2) and (5) with Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(2) Install the ACT fuel-transfer-pump pressure-switch
(a) Remove the blanking caps from the sealing valve (1) and the pressure switch (3).
(b) Install the new AIPC 28-28-03-04-090 O-RING (2) and the new AIPC 28-28-03-04-090 O-RING (5) in the grooves of the pressure switch (3).
(c) Install the pressure switch (3) on the sealing valve (1) and install the plug (6).
14QFB1 Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(e) Remove the blanking caps and connect the electrical connector (4) to the pressure switch (3).
Subtask 28-28-11-420-050-C ** ON A/C NOT FOR ALL (1) Preparation for installation
(a) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the parts retained from the removed component are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(d) Lubricate the new O-rings (2) and (5) with Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) .
(2) Install the ACT fuel-transfer-pump pressure-switch
(a) Remove the blanking caps from the sealing valve (1) and the pressure switch (3).
(b) Install the new AIPC 28-28-03-04-090 O-RING (2) and the new AIPC 28-28-03-04-090 O-RING (5) in the grooves of the pressure switch (3).
(c) Install the pressure switch (3) on the sealing valve (1) and install the plug (6).
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(d) Safety the plug (6) to the sealing valve (1) with lockwire (7) (e) Remove the blanking caps and connect the electrical connector (4) to the pressure switch (3).
A. Installation of the ACT Fuel-Transfer-Pump Pressure-Switch
(1) Preparation for installation:
(a) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the parts retained from the removed component are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(2) Install the ACT fuel-transfer-pump pressure-switch
(a) Remove the PLUG - BLANKING from the safety valve (7) and the fuel transfer-pump pressure-switch (4).
(b) Install the new AIPC 28-28-83-04-090 O-RING (3) and the new AIPC 28-28-83-04-090 O-RING (6) in the grooves of the fuel transfer-pump pressure-switch (4).
(c) Install the fuel transfer-pump pressure-switch (4) on the safety valve (7) and install the plug (1).
(d) Tighten the plug (1).
14QFB1 Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
Subtask 28-28-11-865-052-A ** ON A/C NOT FOR ALL (1) Preparation for installation:
(a) Clean the component interfaces and the adjacent areas with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the parts retained from the removed component are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(2) Install the ACT fuel-transfer-pump pressure-switch
(a) Remove the PLUG - BLANKING from the safety valve (7) and the fuel transfer-pump pressure-switch (4).
(b) Install the new AIPC 28-28-83-04-090 O-RING (3) and the new AIPC 28-28-83-04-090 O-RING (6) in the grooves of the fuel transfer-pump pressure-switch (4).
(c) Install the fuel transfer-pump pressure-switch (4) on the safety valve (7) and install the plug (1).
(d) Tighten the plug (1).
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(e) Safety the plug (1) to the safety valve (7) with lockwire (2) CAUTION:
MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
(f) Remove the CAP - BLANKING and connect the electrical connector (5) to the fuel transfer-pump pressure-switch (4). B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-28-11-650-050-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 |
| 121VU | ACT PUMP SUPPLY | 25QH | Q29 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L23 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L22 |
| 121VU | FUEL/ACT/FUEL PUMP/SPLY | 25QH | Q29 |
C. 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 28-28-11-710-050-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).
D. Test(s)
(1) If the ACT is installed:
(a) Do an operational test of the ACT fuel-transfer-pump pressure-switch (2QH) (Ref. AMM TASK 28-28-00-710-003).
(b) Examine the fuel transfer-pump pressure-switch (2QH) for fuel leaks. No fuel leakage is permitted.
5. Close-up(1) If the ACT is installed:
(a) Do an operational test of the ACT fuel-transfer-pump pressure-switch (2QH) (Ref. AMM TASK 28-28-00-710-003).
(b) Examine the fuel transfer-pump pressure-switch (2QH) for fuel leaks. No fuel leakage is permitted.
Subtask 28-28-11-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Remove the CONTAINER 1 L (1/4 USGAL).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the protective cover of the ACT-equipment support door (Ref. AMM TASK 57-17-11-400-003).
(4) Remove the access platform(s).
(5) Close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
(6) On the FUEL section of panel 40VU, the APU section of overhead panel 25VU and the ENG/APU FIRE panel located on overhead panel 20VU:
(a) Remove the WARNING NOTICE(S).
(7) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) Remove the CONTAINER 1 L (1/4 USGAL).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the protective cover of the ACT-equipment support door (Ref. AMM TASK 57-17-11-400-003).
(4) Remove the access platform(s).
(5) Close the left MLG door (Ref. AMM TASK 32-12-00-410-001).
(6) On the FUEL section of panel 40VU, the APU section of overhead panel 25VU and the ENG/APU FIRE panel located on overhead panel 20VU:
(a) Remove the WARNING NOTICE(S).
(7) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).