SUBTASK 24-21-22-010-001
(2) Open this access panel to get access to the main equipment center:
Number Name/Location
117A Electronic Equipment Access Door
F. Procedure
SUBTASK 24-21-22-020-001
(1) To remove the rigid bus assembly from the Power Distribution Panel 1, P91, do the steps that
follow:
NOTE: These steps are done at the front of the power distribution panel, in the electronic
equipment area.
(a) Remove the breakers listed below. To remove these breakers, do this task: Breaker
Removal, TASK 24-21-41-000-801.
1) These are the circuit breakers:
Power Distribution Panel Number 1, P91
Row Col Number Name
--- --- C00803 AUXILIARY POWER BREAKER
--- --- C00804 BUS TIE BREAKER 1
--- --- C00801 GENERATOR BREAKER 1
(b) Loosen the screws that hold the electrical connectors to the rigid bus assembly.
(c) Remove the two electrical connectors from the rigid bus assembly.
(d) Remove the three nuts [9], lockwashers [10]and washers [11] that hold the bus bars to
the rigid bus assembly.
SUBTASK 24-21-22-020-002
(2) To remove the rigid bus assembly from the Power Distribution Panel 2, P92, do the steps that
follow:
NOTE: These steps are done at the front of the power distribution panel, in the electronic
equipment area.
(a) Remove the breakers listed below. To remove these breakers, do this task: Breaker
Removal, TASK 24-21-41-000-801.
1) These are the circuit breakers:
Power Distribution Panel Number 2, P92
Row Col Number Name
--- --- C00805 BUS TIE BREAKER 2
--- --- C00802 GENERATOR BREAKER 2
(b) Do this task: External Power Contactor Removal, TASK 24-41-12-000-801.
(c) Loosen the screws that hold the electrical connectors to the rigid bus assembly.
(d) Remove the two electrical connectors from the rigid bus assembly.
(e) Remove the three nuts [9], lockwashers [10] and washers [11] that hold the bus bars to
the rigid bus assembly.
(f) Remove the three bolts [12] and washers [13] that hold the wires to the terminal posts on
the rigid bus assembly.
NOTE: Install identification tags on wires before removing these wires.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-21-22
Page 402
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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