DOC AIRBUS | AMM A320FTorque Test of the LP Fuel Valve
TASK 28-24-00-710-802-A
Torque Test of the LP Fuel Valve
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 28-24-00-941-063-A
Subtask 28-24-00-710-056-A
Subtask 28-24-00-861-058-A
[Rev.10 from 2021]
2026.04.02 06:17:34 UTC
Torque Test of the LP Fuel Valve
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
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.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | 1 | CONTAINER 10 L(2 1/2 USGAL) |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | 1 | WRENCH 0 TO 2 DAN (0 TO 150 LBF.IN) - TORQUE |
| 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 28-10-00-910-001-A | Safety Procedures When You Do Work in a Fuel Tank |
| TASK 28-24-00-710-002-A | Operational Test of the ENG 1(2) LP Fuel Valve |
| TASK 28-24-41-000-001-A | Removal of the LP Fuel Valve |
| TASK 28-24-41-400-001-A | Installation of the LP Fuel Valve |
| TASK 28-24-51-000-001-A | Removal of the LP Fuel Valve Actuator |
| TASK 28-24-51-400-001-A | Installation of the LP Fuel Valve Actuator |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| TASK 57-41-37-000-003-A | Removal of the Access Panel |
| TASK 57-41-37-400-003-A | Installation of the Access Panel |
Subtask 28-24-00-941-063-A
A. Safety Precautions
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 28-24-00-862-058-A WARNING:
BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
(1) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank. (2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 28-24-00-650-052-A (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
C. Fuel Configuration
(1) Make sure that there is not more than approximately 3500 kg (7716 lb) of fuel in the applicable tank. If necessary, move the fuel to the opposite tank (Ref. AMM TASK 28-25-00-869-001) or defuel (Ref. AMM TASK 28-25-00-650-001).
Subtask 28-24-00-010-058-A (1) Make sure that there is not more than approximately 3500 kg (7716 lb) of fuel in the applicable tank. If necessary, move the fuel to the opposite tank (Ref. AMM TASK 28-25-00-869-001) or defuel (Ref. AMM TASK 28-25-00-650-001).
D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable access panel 522AT(622AT).
(2) Remove the access panel 522AT(622AT) (Ref. AMM TASK 57-41-37-000-003).
Subtask 28-24-00-865-075-A (1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable access panel 522AT(622AT).
(2) Remove the access panel 522AT(622AT) (Ref. AMM TASK 57-41-37-000-003).
E. Open, safety and tag this(these) circuit breaker(s):
Subtask 28-24-00-210-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | FUEL/LP VALVE/MOT1/ENG2 | 2QG | A09 |
| 49VU | FUEL/LP VALVE/MOT1/ENG1 | 1QG | A08 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/PUMP2 SPLY | 30QA | P26 |
| 121VU | FUEL/CTR TK/PUMP1 SPLY | 29QA | P23 |
| ** ON A/C ALL | |||
| 121VU | FUEL/LP VALVE/MOT2/ENG2 | 4QG | M26 |
| 121VU | FUEL/LP VALVE/MOT2/ENG1 | 3QG | M25 |
| 121VU | FUEL/L WING TK/PUMP2 SPLY | 7QA | N26 |
| 121VU | FUEL/L WING TK/PUMP1 SPLY | 1QA | N23 |
| 121VU | FUEL/R WING TK/PUMP2 SPLY | 8QA | Q26 |
| 121VU | FUEL/R WING TK/PUMP1 SPLY | 2QA | Q23 |
F. General Check
(1) On the fuel control panel, 40VU:
Subtask 28-24-00-862-059-A (1) On the fuel control panel, 40VU:
- make sure that the ON and OPEN legends on the cross-feed valve pushbutton switch are off.
G. De-energize the Electrical Circuits
(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
4. Procedure(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
Subtask 28-24-00-710-056-A
A. Torque Test of the LP Fuel Valve
(1) Remove the LP valve actuator 9QG(10QG) (Ref. AMM TASK 28-24-51-000-001).
(2) Put a CONTAINER 10 L(2 1/2 USGAL) below the LP fuel valve.
(3) Use a WRENCH 0 TO 2 DAN (0 TO 150 LBF.IN) - TORQUE to measure the torque necessary to operate the LP fuel valve from the:
(5) Do an operational test of the LP fuel valve (Ref. AMM TASK 28-24-00-710-002).
(6) If the test result is unsatisfactory, replace the LP fuel valve actuator (Ref. AMM TASK 28-24-51-000-001) (Ref. AMM TASK 28-24-51-400-001).
(7) If the necessary torque is less than 0.226 m.daN (20.00 lbf.in) or the LP fuel valve is not to be replaced:
5. Close-up(1) Remove the LP valve actuator 9QG(10QG) (Ref. AMM TASK 28-24-51-000-001).
(2) Put a CONTAINER 10 L(2 1/2 USGAL) below the LP fuel valve.
(3) Use a WRENCH 0 TO 2 DAN (0 TO 150 LBF.IN) - TORQUE to measure the torque necessary to operate the LP fuel valve from the:
- CLOSED position to the OPEN position
or - OPEN position to the CLOSED position.
The torque value must not be more than 0.226 m.daN (20.00 lbf.in).
(5) Do an operational test of the LP fuel valve (Ref. AMM TASK 28-24-00-710-002).
(6) If the test result is unsatisfactory, replace the LP fuel valve actuator (Ref. AMM TASK 28-24-51-000-001) (Ref. AMM TASK 28-24-51-400-001).
(7) If the necessary torque is less than 0.226 m.daN (20.00 lbf.in) or the LP fuel valve is not to be replaced:
- replace the LP fuel valve actuator (Ref. AMM TASK 28-24-51-000-001) (Ref. AMM TASK 28-24-51-400-001).
Subtask 28-24-00-861-058-A
A. Energize the Electrical Circuits
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 28-24-00-865-076-A (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-24-00-650-053-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | FUEL/LP VALVE/MOT1/ENG2 | 2QG | A09 |
| 49VU | FUEL/LP VALVE/MOT1/ENG1 | 1QG | A08 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/PUMP2 SPLY | 30QA | P26 |
| 121VU | FUEL/CTR TK/PUMP1 SPLY | 29QA | P23 |
| ** ON A/C ALL | |||
| 121VU | FUEL/LP VALVE/MOT2/ENG2 | 4QG | M26 |
| 121VU | FUEL/LP VALVE/MOT2/ENG1 | 3QG | M25 |
| 121VU | FUEL/L WING TK/PUMP2 SPLY | 7QA | N26 |
| 121VU | FUEL/L WING TK/PUMP1 SPLY | 1QA | N23 |
| 121VU | FUEL/R WING TK/PUMP2 SPLY | 8QA | Q26 |
| 121VU | FUEL/R WING TK/PUMP1 SPLY | 2QA | Q23 |
C. Aircraft Maintenance Configuration
(1) Refuel the applicable tank as necessary (Ref. AMM TASK 12-11-28-650-003).
(2) On Panel 40VU:
Subtask 28-24-00-710-057-A (1) Refuel the applicable tank as necessary (Ref. AMM TASK 12-11-28-650-003).
(2) On Panel 40VU:
- for the left wing, push (in) the L TK PUMPS 1 and 2 pushbutton switches
- for the right wing, push (in) the R TK PUMPS 1 and 2 pushbutton switches.
D. Test
(1) Do an operational test of the LP fuel valve (Ref. AMM TASK 28-24-00-710-002).
Subtask 28-24-00-410-059-A Subtask 28-24-00-942-062-A (1) Do an operational test of the LP fuel valve (Ref. AMM TASK 28-24-00-710-002).
NOTE: Let the LP fuel valve stay open for 10 minutes (to let the fuel get through the LP fuel valve for the leak check).
(2) Examine these areas for leaks: - the LP fuel-valve to mounting-plate interface
- after 10 Minutes, the pylon drain hole.
- for the left wing, release (out) the L TK PUMPS 1 and 2 pushbutton switches
- for the right wing, release (out) the R TK PUMPS 1 and 2 pushbutton switches.
F. Removal of equipment
(1) Remove the safety barriers
(2) Remove the warning notice(s)
(3) Remove the access platform(s)
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers
(2) Remove the warning notice(s)
(3) Remove the access platform(s)
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.