W DOC AIRBUS | AMM A320F

Removal of the Power Supply Unit - Sharklet

TASK 33-48-38-000-802-A
Removal of the Power Supply Unit - Sharklet

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.
ZONE: 534
ZONE: 634
FIN: 14LV ** ON A/C NOT FOR ALL
FIN: 15LV ** ON A/C NOT FOR ALL
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 4M (13 FT)
No specific
AR
CAP - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
2
SCRAPER - NON METALLIC
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
534
WING TIP
634
WING TIP
FOR [14LV] (PSU)
634CB
FOR [15LV] (PSU)
534CB
 C. Referenced Information
REFERENCE
DESIGNATION
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)
F Strobe Light PSU - Sharklet - Access ** ON A/C NOT FOR ALL
F Strobe Light PSU - Sharklet - Location and Detail ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 33-48-38-941-054-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) Put the SAFETY BARRIER(S) in position.
   (2) Put a WARNING NOTICE(S) in position on panel 25VU to tell persons not to operate the strobe lights or the navigation lights.
Subtask 33-48-38-865-055-A ** ON A/C NOT FOR ALL
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
122VULIGHTING/EXT LT/NAV2/AND LOGO/LT2LAT02
122VULIGHTING/WING/STROBE10LVV05
** ON A/C NOT FOR ALL
122VULIGHT/EXT LT NAV1/AND LOGO/LT1LAT03
** ON A/C NOT FOR ALL
122VULIGHTING/EXT LT/NAV1/AND LOGO/LT1LAT03
Subtask 33-48-38-860-052-A ** ON A/C NOT FOR ALL
C. Aircraft Maintenance Configuration
   (1) Make sure that the aircraft electrical circuits are de-energized
(Ref. AMM TASK 24-41-00-862-002).
Subtask 33-48-38-010-051-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Put the ACCESS PLATFORM 4M (13 FT) in position below the zone 534(634).
   (2) Remove the access panel (1):
     (a) FOR [15LV] (PSU)
     (b) FOR [14LV] (PSU)
     (c) Use a SCRAPER - NON METALLIC to remove the sealant from the space between the sharklet and the access panel (1).
     (d) Hold the access panel (1) and remove the screws (2). Identify the positions of each screw (2) with a label for the subsequent installation procedure. Each screw (2) can be a different length.
     (e) Remove the access panel (1).
4. Procedure
Subtask 33-48-38-020-051-A ** ON A/C NOT FOR ALL
A. Removal of the Power Supply Unit
WARNING: DO NOT DISCONNECT THE ELECTRICAL CONNECTIONS FOR AT LEAST 2 MINUTES AFTER YOU DE-ENERGIZE THE ELECTRICAL CIRCUITS.
   (1) Identify the electrical connectors (1) and the electrical connectors of the power supply unit (2) with a label. This is for the subsequent installation procedure.
   (2) Disconnect the electrical connectors (1) from the power supply unit (2).
   (3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
   (4) Use a SCRAPER - NON METALLIC to remove the sealant from the bolts (4) and (6) and the washers (3) and (5).
   (5) Remove the bolts (4) and (6) and the washers (3) and (5).
   (6) Carefully remove the power supply unit (2).
[Rev.10 from 2021] 2026.04.01 12:52:53 UTC
"Aviabrain" 2025