DOC AIRBUS | AMM A320FInstallation of the Overflow Sensor
TASK 28-46-16-400-001-A
Installation of the Overflow Sensor
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 28-46-16-941-053-A
Subtask 28-46-16-420-051-A
Subtask 28-46-16-410-051-A
[Rev.10 from 2021]
2026.04.02 06:18:16 UTC
Installation of the Overflow Sensor
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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.
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 [28QJ1] (SENSOR-HIGH LVL, LEFT WING SURGE TK CHANNEL A) | |
| 550CB | |
| FOR [28QJ2] (SENSOR-HIGH LVL, RIGHT WING SURGE TK CHANNEL A) | |
| 650CB | |
| 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 28-12-45-000-001-A | Removal of the Panel Assembly |
| TASK 28-12-45-400-002-A | Installation of the Panel Assembly |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-650-003-A | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-650-003-A-01 | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| TASK 28-46-00-740-001-A | Functional (BITE) Test |
Overflow SensorSubtask 28-46-16-941-053-A
A. Safety Precautions
(2) Make sure that the SAFETY BARRIER(S) are in position.
Subtask 28-46-16-860-050-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) Make sure that the SAFETY BARRIER(S) are in position.
B. Aircraft Maintenance Configuration
(1) Make sure that the remaining fuel has been drained from the applicable vent surge tank (Ref. AMM TASK 28-25-00-650-003).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT) is below the applicable access panel 550CB (650CB).
(3) Make sure that the applicable access panel 550CB (650CB) is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 28-12-45-000-001).
Subtask 28-46-16-865-051-A (1) Make sure that the remaining fuel has been drained from the applicable vent surge tank (Ref. AMM TASK 28-25-00-650-003).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT) is below the applicable access panel 550CB (650CB).
(3) Make sure that the applicable access panel 550CB (650CB) is removed (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 28-12-45-000-001).
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 | |||
| 49VU | FUEL/XFR VALVE1/WING/R | 2QP | A11 |
| 49VU | FUEL/XFR VALVE1/WING/L | 1QP | A10 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/AFT LOW LVL/& OVFL/WING R | 44QJ | A11 |
| 49VU | FUEL/AFT LOW LVL/& OVFL/WING L | 43QJ | A10 |
Subtask 28-46-16-420-051-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 28-46-16-420-050-A ** ON A/C NOT FOR ALL (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 Overflow Sensor
(1) Install the sensor (3) with the bolts (1) and (7) and the washers (2) and (6).
(2) TORQUE the bolt (1) to between .56 and .45 m.daN (49.56 and 39.82 lbf.in )
.
(3) TORQUE the bolt (7) to between .28 and .225 m.daN (24.78 and 19.91 lbf.in ).
(4) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (1) and (7).
(5) Remove the blanking caps from the electrical connectors.
(6) Connect the electrical connectors of the cable (5) with the connector screws (8) and (9).
(7) TORQUE the connector screw (8) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in ).
(8) TORQUE the connector screw (9) to between 0.226 and 0.204 m.daN (20.00 and 18.05 lbf.in ).
(9) Install the cable (5) in the cable clamp with the cable clamp screw (4).
(10) TORQUE the cable clamp screw (4) to between 0.067 and 0.034 m.daN (5.93 and 3.01 lbf.in ).
Subtask 28-46-16-420-050-B ** ON A/C NOT FOR ALL (1) Install the sensor (3) with the bolts (1) and (7) and the washers (2) and (6).
(2) TORQUE the bolt (1) to between .56 and .45 m.daN (49.56 and 39.82 lbf.in )
. (3) TORQUE the bolt (7) to between .28 and .225 m.daN (24.78 and 19.91 lbf.in )
. (4) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (1) and (7).
(5) Remove the blanking caps from the electrical connectors.
(6) Connect the electrical connectors of the cable (5) with the connector screws (8) and (9).
(7) TORQUE the connector screw (8) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in )
. (8) TORQUE the connector screw (9) to between 0.226 and 0.204 m.daN (20.00 and 18.05 lbf.in )
. (9) Install the cable (5) in the cable clamp with the cable clamp screw (4).
(10) TORQUE the cable clamp screw (4) to between 0.067 and 0.034 m.daN (5.93 and 3.01 lbf.in )
. B. Installation of the Overflow Sensor
(1) Install the cover (4) and the sensor (3) on the support bracket.
(2) Install the bolts (1) and (8) and the washers (2) and (7).
(3) TORQUE the bolt (1) to between .56 and .45 m.daN (49.56 and 39.82 lbf.in ).
(4) TORQUE the bolt (8) to between .28 and .225 m.daN (24.78 and 19.91 lbf.in ).
(5) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (1) and (8).
(6) Remove the blanking caps from the electrical connectors.
(7) Connect the electrical connectors of the cable (6) with the connector screws (9) and (10).
(8) TORQUE the connector screw (9) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in ).
(9) TORQUE the connector screw (10) to between 0.226 and 0.204 m.daN (20.00 and 18.05 lbf.in ).
(10) Install the cable (6) in the cable clamp with the cable clamp screw (5).
(11) TORQUE the cable clamp screw (5) to between 0.067 and 0.034 m.daN (5.93 and 3.01 lbf.in ).
Subtask 28-46-16-865-052-A (1) Install the cover (4) and the sensor (3) on the support bracket.
(2) Install the bolts (1) and (8) and the washers (2) and (7).
(3) TORQUE the bolt (1) to between .56 and .45 m.daN (49.56 and 39.82 lbf.in )
. (4) TORQUE the bolt (8) to between .28 and .225 m.daN (24.78 and 19.91 lbf.in )
. (5) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the bolts (1) and (8).
(6) Remove the blanking caps from the electrical connectors.
(7) Connect the electrical connectors of the cable (6) with the connector screws (9) and (10).
(8) TORQUE the connector screw (9) to between 0.124 and 0.102 m.daN (10.97 and 9.03 lbf.in )
. (9) TORQUE the connector screw (10) to between 0.226 and 0.204 m.daN (20.00 and 18.05 lbf.in )
. (10) Install the cable (6) in the cable clamp with the cable clamp screw (5).
(11) TORQUE the cable clamp screw (5) 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 28-46-16-740-050-A 5. Close-up| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/XFR VALVE1/WING/R | 2QP | A11 |
| 49VU | FUEL/XFR VALVE1/WING/L | 1QP | A10 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FUEL/AFT LOW LVL/& OVFL/WING R | 44QJ | A11 |
| 49VU | FUEL/AFT LOW LVL/& OVFL/WING L | 43QJ | A10 |
Subtask 28-46-16-410-051-A
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 28-12-45-400-002):
(a) FOR [28QJ1] (SENSOR-HIGH LVL, LEFT WING SURGE TK CHANNEL A)
install 550CB
(b) FOR [28QJ2] (SENSOR-HIGH LVL, RIGHT WING SURGE TK CHANNEL A)
install 650CB.
Subtask 28-46-16-650-052-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 28-12-45-400-002):
(a) FOR [28QJ1] (SENSOR-HIGH LVL, LEFT WING SURGE TK CHANNEL A)
install 550CB
(b) FOR [28QJ2] (SENSOR-HIGH LVL, RIGHT WING SURGE TK CHANNEL A)
install 650CB.
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 28-46-16-942-051-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.
(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.