W DOC AIRBUS | AMM A320F

Installation of the Fuel Quantity Preselector

TASK 28-42-21-400-001-A
Installation of the Fuel Quantity Preselector

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.
WARNING: OBEY THE FUEL SAFETY PROCEDURES.
ZONE: 190
ZONE: 500
ZONE: 600
FIN: 5QT
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
SAFETY BARRIER(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
190
BELLY FAIR, AIR CONDITIONING & HYD COMPT
500
LEFT WING
600
RIGHT WING
622KB
192MB
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 28-42-00-710-001-A
Operational Test of the Fuel Quantity Indicating-System
TASK 28-42-00-740-001-A
Status Report (BITE)
ESPM 2033450
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
F Fuel Quantity Preselector 5QT ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 28-42-21-941-053-A
A. Safety Precautions
   (1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
   (2) Make sure that the SAFETY BARRIER(S) are in position.
Subtask 28-42-21-860-050-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) If applied, make sure that the access platform is below zone 192.
   (2) Make sure that access panel 192MB is open.
Subtask 28-42-21-860-050-B ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
   (1) Make sure that the access platform is below zone 622.
   (2) Make sure that access panel 622KB is open.
Subtask 28-42-21-865-051-A
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUFUEL/FQI/CHAN/11QTA13
** ON A/C NOT FOR ALL
121VUFUEL/FQI/CHANNEL/1 AND 28QTL26
** ON A/C ALL
121VUFUEL/FQI/CHAN/22QTM27
** ON A/C NOT FOR ALL
121VUFUEL/FQI/CHANNEL/1 AND 28QTL25
4. Procedure
Subtask 28-42-21-420-052-A
A. Preparation for Installation
   (1) 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) .
   (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 28-42-21-420-050-A
B. Installation of Fuel Quantity Preselector 5QT
   (1) Remove the blanking caps from the electrical connections.
CAUTION: DO NOT PULL THE PRESELECTOR TOO FAR AND DO NOT LET IT HANG ON THE ELECTRICAL CABLE. THIS WILL PREVENT DAMAGE TO THE ELECTRICAL CABLE.
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE COMPONENT DURING THE PROCEDURE. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO COMPONENT.
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.
   (2) Connect the electrical plug (1). If it is not possible to connect the electrical plug (1) adjust the position of the backshell as follows ESPM 2033450:
     (a) Loosen the backshell on the electrical plug (1).
     (b) Turn the backshell until the electrical plug (1) can be connected.
     (c) Tighten the backshell on the electrical plug (1).
   (3) Install the preselector (2) in the mounting frame back-plate. Make sure the spigot on the preselector (2) engages correctly in the mounting frame back-plate.
   (4) Tighten the two quick-release fasteners (3).
Subtask 28-42-21-865-052-A
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUFUEL/FQI/CHAN/11QTA13
** ON A/C NOT FOR ALL
121VUFUEL/FQI/CHANNEL/1 AND 28QTL26
** ON A/C ALL
121VUFUEL/FQI/CHAN/22QTM27
** ON A/C NOT FOR ALL
121VUFUEL/FQI/CHANNEL/1 AND 28QTL25
Subtask 28-42-21-710-050-A
D. Operational Test
   (1) Do an operational test of the fuel quantity preselector-lights (Ref. AMM TASK 28-42-00-710-001).
Subtask 28-42-21-740-050-A
E. BITE Test
   (1) Do a status report (BITE) of the fuel quantity indicating-system (Ref. AMM TASK 28-42-00-740-001).
5. Close-up
Subtask 28-42-21-410-050-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) Close access panel 192MB.
Subtask 28-42-21-410-050-B ** 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) Close access panel 622KB.
Subtask 28-42-21-942-050-A
B. Removal of Equipment
   (1) Remove the safety barriers.
   (2) Remove the access platform(s).
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 06:18:07 UTC
"WTRUIB" 2025