W DOC AIRBUS | AMM A320F

Removal of the Center-Tank Fuel-Level Sensors

TASK 28-46-15-000-004-A
Removal of the Center-Tank Fuel-Level Sensors

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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
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.
FIN: 20QJ
FIN: 21QJ
FIN: 22QJ
1. Reason for the Job
Self Explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
CAP - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
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
 C. Referenced Information
REFERENCE
DESIGNATION
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 28-25-00-650-003-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 32-12-00-010-001-A
Open the Main Gear Doors for 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
F Sensor 20QJ, 21QJ, 22QJ
F Sensor 20QJ, 21QJ, 22QJ
3. Job Set-up
Subtask 28-46-15-941-068-A
A. Safety Precautions
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) Put the SAFETY BARRIER(S) 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.
Subtask 28-46-15-865-056-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 20QJ (SENSORHIGH LEVEL, CHANNEL A)
121VUFUEL/HI/LVL/SPLY1QJL25
** ON A/C NOT FOR ALL
121VUFUEL/HI/LVL/SPLY1QJL24
** ON A/C NOT FOR ALL
FOR FIN: 21QJ (SENSORLOW LVL, L CTR TK CHANNEL A)
121VUFUEL/CTR TK/PUMPS1 AND 2/CTL AND IND32QAR26
121VUFUEL/CTR TK/PUMPS1 AND 2/CTL AND IND31QAR25
** ON A/C NOT FOR ALL
121VUFUEL/CTR TK/AUTO/CTL3QLR27
121VUFUEL/CTR TK/L&R XFR/CTL & IND1QLR25
** ON A/C NOT FOR ALL
FOR FIN: 22QJ (SENSORLOW LVL, R CTR TK CHANNEL B)
121VUFUEL/CTR TK/PUMPS1 AND 2/CTL AND IND32QAR26
121VUFUEL/CTR TK/PUMPS1 AND 2/CTL AND IND31QAR25
** ON A/C NOT FOR ALL
121VUFUEL/CTR TK/AUTO/CTL3QLR27
121VUFUEL/CTR TK/L&R XFR/CTL & IND2QLR26
Subtask 28-46-15-650-068-A
C. Fuel Configuration
   (1) Defuel the applicable tank (Ref. AMM TASK 28-25-00-650-001).
   (2) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).
Subtask 28-46-15-010-053-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Open the MLG main-door (Ref. AMM TASK 32-12-00-010-001).
   (2) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating-cylinder.
   (3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable access panel 147AZ (148AZ).
   (4) Remove the applicable access panel (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-17-11-000-001):
     (a) FOR [20QJ] (SENSOR-HIGH LEVEL, CHANNEL A), [21QJ] (SENSOR-LOW LVL, L CTR TK CHANNEL A)
remove 147AZ

     (b) FOR [22QJ] (SENSOR-LOW LVL, R CTR TK CHANNEL B)
remove 148AZ.
Subtask 28-46-15-010-053-C ** ON A/C NOT FOR ALL
D. Get Access
   (1) Open the MLG main-door (Ref. AMM TASK 32-12-00-010-001).
   (2) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating-cylinder.
   (3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable access panel 148AZ.
   (4) Remove the applicable access panel (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-17-11-000-001):
     (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)
remove 148AZ
4. Procedure
Subtask 28-46-15-020-053-A
A. Removal of the Center-Tank Fuel-Level Sensors
   (1) Loosen the cable clamp screw (9) and release the cable (1).
   (2) Loosen the electrical connector screws (4) and (5) and remove the cable (1),
   (3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (4) Remove the bolts (3) and (6) and the washers (2) and (7). Remove the sensor (8).
[Rev.10 from 2021] 2026.04.02 06:18:16 UTC
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