(10)
Put blanking caps on the disconnected electrical connector (4) and electrical receptacle.
(11)
Remove the screws (3) and the washers (2) from the current transformer (1).
(12)
Remove the necessary cable ties to move the current transformer (1) along the cable bundles.
(13)
Remove the current transformer (1).
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Subtask 24-22-17-020-051-A
B. Removal of the AC Current Transformer
FOR 42XU1, 42XU2
(Ref. Fig. 403A/TASK 24-22-17-991-004-A)
(1)
Remove the screws (9) and the washers (8) from the studs of the module 29XN and 30XN1 (30XN2).
(2)
Disconnect the bars (7) from the studs of the modules 29XN and 30XN1 (30XN2).
(3)
Disconnect the electrical connector (4) from the current transformer (1).
(4)
Put blanking caps on the disconnected electrical connector (4) and electrical receptacle.
(5)
Remove the screws (3), the washers (2), the nuts (5) and the washers
(6) from the current transformer (1).
(6)
Remove the current transformer (1).
Subtask 24-22-17-020-052-A
C. Removal of the AC Current Transformer
FOR 42XU3, 42XU4
(Ref. Fig. 404A/TASK 24-22-17-991-003-A)
CAUTION : MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU
_______ DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
(1)
FOR 42XU3 In the rear panel 120VU, disconnect all the cables from the pin 2 of the circuit breakers connected to the AC BUS 1 busbar 1XP.
(2)
FOR 42XU4 In the rear panel 120VU, disconnect all the cables from the pin 2 of the circuit breakers connected to the AC BUS 2 busbar 2XP.
(3)
In the AC power center 123VU, disconnect all the cables from the pin 2 of the circuit breakers 11QA and 12QA.
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AC Current Transformer ( 42XU3 and 42XU4) Figure 404A/TASK 24-22-17-991-003-A
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(4)
Record the location and the color of the cables each bundle which
goes through the current transformer (1).
(5)
Remove the screws (12) and the washers (11) from the studs of the
module 30XN1 (30XN2).
(6)
Disconnect the cables (10) from the studs of the module 30XN1
(30XN2).
NOTE : You must identify (also with the indications on the current
____ transformer) and disconnect only the cables which go through the current transformer.
(7)
Remove the nuts (9) and the washers (8) from the studs of the module 30XN1 (30XN2).
(8)
Disconnect the cables (6) and (7) from the studs of the module 30XN1 (30XN2).
(9)
Disconnect the electrical connector (4) from the current transformer (1).
(10)
Put blanking caps on the disconnected electrical connector (4) and electrical receptacle.
(11)
Remove the screws (3) and the washers (2) from the current transformer (1).
(12)
Remove and discard the necessary cable ties to move the current transformer (1) along the cable bundles.
(13)
Remove the current transformer (1).
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R **ON A/C 401-499,
R TASK 24-22-17-000-001-A
R Removal of the AC Current Transformers (41XU1, 41XU2, 51XU1, 51XU2)
R WARNING : MAKE SURE THAT NO AC OR DC POWER IS CONNECTED TO THE AIRCRAFT_______
R ELECTRICAL CIRCUITS.
R THERE IS A RISK OF ELECTROCUTION IF THE AC OR DC POWER STAYS
R CONNECTED.
R 1. Reason for the Job__________________
R Self Explanatory
R 2. Job Set-up Information______________________
R A. Fixtures, Tools, Test and Support Equipment
R -------------------------------------------------------------------------------
R REFERENCE QTY DESIGNATION
R -------------------------------------------------------------------------------
R FOR FIN 41XU1, 41XU2
R No specific blanking caps
R No specific access platform 1.6 m (5 ft. 3 in.)
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