Subtask 33-48-36-710-050
B. Do an operational test of the upper beacon/strobe light 7LV (Ref. TASK 33-48-00-710-001).
5. Close-up
________ Subtask 33-48-36-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the center ceiling panel 241CC (Ref. TASK 25-23-41-400-001).
(3)
Remove the stepladder.
POWER SUPPLY UNIT - LOWER BEACON LIGHT (4LV) - REMOVAL/INSTALLATION
___________________________________________________________________
TASK 33-48-37-000-001 Removal of the Power Supply Unit 4LV
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
No specific circuit breaker(s) safety clip(s)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure 33-48-37-991-001 Fig. 401
3. Job Set-up
__________
WARNING : ISOLATE THE ELECTRICAL CIRCUITS FROM THE RELATED EQUIPMENT AND THE
_______
ENVIRONMENT.
Subtask 33-48-37-865-050
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
122VU LIGHTING/EXT LT/BEACON/LOWER 5LV U03
Subtask 33-48-37-860-050
B. Aircraft Maintenance Configuration
(1) Make sure that the switch 2LV BEACON ON-OFF on the overhead panel 25VU is in the OFF position.
Subtask 33-48-37-010-050
C. Get Access
(1) Remove the access panel 191HB at the belly fairing to get access to the power supply unit (1) (Ref. TASK 53-35-13-000-002).
4. Procedure
_________
(Ref. Fig. 401/TASK 33-48-37-991-001) Subtask 33-48-37-020-050
A. Removal of the Power Supply Unit
(1)
Remove and discard the lockwire from the electrical connector (5). WARNING : DO NOT DISCONNECT THE ELECTRICAL CONNECTIONS FOR AT LEAST 2
_______ MINUTES AFTER YOU DE-ENERGIZE THE ELECTRICAL CIRCUITS.
(2)
Disconnect the electrical connectors (2) and (5) from the power supply unit (1).
(3)
Put blanking caps on the disconnected electrical connectors.
(4)
Remove the screws (4) and the washers (3).
(5)
Remove the power supply unit (1) from the fuselage.
Power Supply Unit 4LV
Figure 401/TASK 33-48-37-991-001
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TASK 33-48-37-400-001
Installation of the Power Supply Unit 4LV
1. Reason for the Job__________________
Self Explanatory
2. Job Set-up Information______________________
A. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R No specific Material No. 16-003 lockwire - corrosion resistant steel 0.6mm (0.24 in.) dia. F ASNB70720 COATING (OBSOLETE USE 16-021) (Ref. 20-31-00)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R R R 20-28-00-912-004 33-48-12-700-001 53-35-13-400-002 33-48-37-991-001 Electrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not includes the tanks)-Test of the Lower Beacon/Strobe Light 6LVInstallation of the Quick-Release Access Panels on the Belly Fairing StructureFig. 401
3. Job Set-up__________
Subtask 33-48-37-860-051
A. Aircraft Maintenance Configuration
(1) Make sure that the switch 2LV BEACON ON-OFF on the overhead panel is in the OFF position.
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