DOC AIRBUS | AMM A320FInstallation of the Center-Tank Fuel-Level Sensors
TASK 28-46-15-400-012-A
Installation of the Center-Tank Fuel-Level Sensors
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 28-46-15-941-070-A
Subtask 28-46-15-420-060-A
Subtask 28-46-15-410-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:18:16 UTC
Installation of the Center-Tank Fuel-Level Sensors
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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:
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
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.06HAA1) | Coating Sealant-Fuel Tank Brushable - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [20QJ] (SENSOR-HIGH LEVEL, CHANNEL A) | |
| FOR [21QJ] (SENSOR-LOW LVL, L CTR TK CHANNEL A) | |
| 147AZ | |
| FOR [20QJ] (SENSOR-HIGH LEVEL, CHANNEL A) | |
| FOR [21QJ] (SENSOR-LOW LVL, L CTR TK CHANNEL A) | |
| FOR [22QJ] (SENSOR-LOW LVL, R CTR TK CHANNEL B) | |
| 148AZ | |
| FOR [22QJ] (SENSOR-LOW LVL, R CTR TK CHANNEL B) | |
| 148AZ | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-11-28-650-003-A | Pressure Refuel with Automatic Control |
| TASK 28-10-00-910-001-A | Safety Procedures When You Do Work in a Fuel Tank |
| 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 28-25-00-869-001-A | Fuel Transfer |
| TASK 28-46-00-740-001-A | Functional (BITE) Test |
| 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-A | Removal of Access Cover 147AZ(148AZ) |
| 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-A | Installation of Access Cover 147AZ(148AZ) |
| TASK 57-17-11-400-001-B | Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door |
Sensor 20QJ, 21QJ, 22QJSubtask 28-46-15-941-070-A
A. Safety Precautions
(2) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank.
Subtask 28-46-15-860-051-A ** ON A/C NOT FOR ALL 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) Make sure that the SAFETY BARRIER(S) are in position. (2) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank.
B. Aircraft Maintenance Configuration
(1) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001) .
(2) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is below the applicable access panel 147AZ (148AZ).
(3) Make sure that the applicable access panel 147AZ (148AZ) is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-17-11-000-001).
(4) Make sure that the MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(5) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating-cylinder.
Subtask 28-46-15-860-051-C ** ON A/C NOT FOR ALL (1) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001) .
(2) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is below the applicable access panel 147AZ (148AZ).
(3) Make sure that the applicable access panel 147AZ (148AZ) is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-17-11-000-001).
(4) Make sure that the MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(5) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating-cylinder.
B. Aircraft Maintenance Configuration
(1) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001) .
(2) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is below the applicable access panel 148AZ.
(3) Make sure that the applicable access panel 148AZ is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-17-11-000-001).
(4) Make sure that the MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(5) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating-cylinder.
Subtask 28-46-15-865-071-A (1) Make sure that the applicable fuel tank is defueled (Ref. AMM TASK 28-25-00-650-001) .
(2) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is below the applicable access panel 148AZ.
(3) Make sure that the applicable access panel 148AZ is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-17-11-000-001).
(4) Make sure that the MLG door is open (Ref. AMM TASK 32-12-00-010-001).
(5) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating-cylinder.
C. 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 | |||
| FOR FIN: 20QJ (SENSORHIGH LEVEL, CHANNEL A) | |||
| 121VU | FUEL/HI/LVL/SPLY | 1QJ | L25 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/HI/LVL/SPLY | 1QJ | L24 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 21QJ (SENSORLOW LVL, L CTR TK CHANNEL A) | |||
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 32QA | R26 |
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 31QA | R25 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/AUTO/CTL | 3QL | R27 |
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 1QL | R25 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 22QJ (SENSORLOW LVL, R CTR TK CHANNEL B) | |||
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 32QA | R26 |
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 31QA | R25 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/AUTO/CTL | 3QL | R27 |
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 2QL | R26 |
Subtask 28-46-15-420-060-A
A. Preparation for Installation
(1) Clean the component interfaces and the adjacent areas with Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
Subtask 28-46-15-420-053-A (1) Clean the component interfaces and the adjacent areas with Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
B. Installation of the Center-Tank Fuel-Level Sensor
(1) Install the sensor (8) with the bolts (3) and (6) and the washers (2) and (7).
(2) TORQUE the bolt (3) to between .28 and .225 m.daN (24.78 and 19.91 lbf.in )
.
(3) TORQUE the bolt (6) to between .56 and .45 m.daN (49.56 and 39.82 lbf.in ).
(4) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (3) and (6).
(5) Remove the blanking caps from the electrical connectors.
(6) Connect the electrical connectors of the cable (1) with the connector screws (4) and (5).
(7) TORQUE the connector screw (4) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in ).
(8) TORQUE the connector screw (5) to between 0.226 and 0.204 m.daN (20.00 and 18.05 lbf.in ).
(9) Install the cable (1) in the cable clamp with the cable clamp screw (9).
(10) TORQUE the cable clamp screw (9) to between 0.067 and 0.034 m.daN (5.93 and 3.01 lbf.in ).
Subtask 28-46-15-865-073-A (1) Install the sensor (8) with the bolts (3) and (6) and the washers (2) and (7).
(2) TORQUE the bolt (3) to between .28 and .225 m.daN (24.78 and 19.91 lbf.in )
. (3) TORQUE the bolt (6) to between .56 and .45 m.daN (49.56 and 39.82 lbf.in )
. (4) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (3) and (6).
(5) Remove the blanking caps from the electrical connectors.
(6) Connect the electrical connectors of the cable (1) with the connector screws (4) and (5).
(7) TORQUE the connector screw (4) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in )
. (8) TORQUE the connector screw (5) to between 0.226 and 0.204 m.daN (20.00 and 18.05 lbf.in )
. (9) Install the cable (1) in the cable clamp with the cable clamp screw (9).
(10) TORQUE the cable clamp screw (9) to between 0.067 and 0.034 m.daN (5.93 and 3.01 lbf.in )
. C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-46-15-740-056-A 5. Close-up| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 20QJ (SENSORHIGH LEVEL, CHANNEL A) | |||
| 121VU | FUEL/HI/LVL/SPLY | 1QJ | L25 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/HI/LVL/SPLY | 1QJ | L24 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 21QJ (SENSORLOW LVL, L CTR TK CHANNEL A) | |||
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 32QA | R26 |
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 31QA | R25 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/AUTO/CTL | 3QL | R27 |
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 1QL | R25 |
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 22QJ (SENSORLOW LVL, R CTR TK CHANNEL B) | |||
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 32QA | R26 |
| 121VU | FUEL/CTR TK/PUMPS1 AND 2/CTL AND IND | 31QA | R25 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/AUTO/CTL | 3QL | R27 |
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 2QL | R26 |
Subtask 28-46-15-410-053-A ** 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) Install the applicable access panel (Ref. AMM TASK 57-17-11-400-001):
(a) FOR [20QJ] (SENSOR-HIGH LEVEL, CHANNEL A), [21QJ] (SENSOR-LOW LVL, L CTR TK CHANNEL A)
install 147AZ
(b) FOR [22QJ] (SENSOR-LOW LVL, R CTR TK CHANNEL B)
install 148AZ.
Subtask 28-46-15-410-053-C ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel (Ref. AMM TASK 57-17-11-400-001):
(a) FOR [20QJ] (SENSOR-HIGH LEVEL, CHANNEL A), [21QJ] (SENSOR-LOW LVL, L CTR TK CHANNEL A)
install 147AZ
(b) FOR [22QJ] (SENSOR-LOW LVL, R CTR TK CHANNEL B)
install 148AZ.
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel (Ref. AMM TASK 57-17-11-400-001):
(a) FOR [20QJ] (SENSOR-HIGH LEVEL, CHANNEL A), [21QJ] (SENSOR-LOW LVL, L CTR TK CHANNEL A), [22QJ] (SENSOR-LOW LVL, R CTR TK CHANNEL B)
install 148AZ
Subtask 28-46-15-650-070-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel (Ref. AMM TASK 57-17-11-400-001):
(a) FOR [20QJ] (SENSOR-HIGH LEVEL, CHANNEL A), [21QJ] (SENSOR-LOW LVL, L CTR TK CHANNEL A), [22QJ] (SENSOR-LOW LVL, R CTR TK CHANNEL B)
install 148AZ
B. 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 28-46-15-942-069-A (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).
C. 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.
(5) Close the applicable MLG main-door (Ref. AMM TASK 32-12-00-410-001).
(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.
(5) Close the applicable MLG main-door (Ref. AMM TASK 32-12-00-410-001).