E. Prepare for the Removal
SUBTASK 24-21-51-860-002
(1) Make sure the APU master switch on the P5 forward overhead panel is OFF and install a
DO-NOT-OPERATE tag.
SUBTASK 24-21-51-860-003
(2) Open these circuit breakers and install safety tags:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 19 C01344 APU FIRE SW POWER
F/O Electrical System Panel, P6-4
Row Col Number Name
A 14 C00033 AUX POWER UNIT CONT
SUBTASK 24-21-51-860-001
(3) Do this task: Remove Electrical Power, TASK 24-22-00-860-812.
F. Procedure
SUBTASK 24-21-51-020-001
(1) Do these steps to remove the module [1]:
(a) Unlatch the P5 overhead panel and let the panel hinge down to the open position.
(b) Disconnect the electrical connectors from the module [1].
(c) Put protective covers on the electrical connectors.
(d) Loosen the quarter turn fasteners on the module [1].
NOTE: Hold the module when you loosen the quarter turn fasteners so that the module
does not fall.
(e) Carefully pull the module [1] out from the P5 overhead panel.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-21-51
Page 402
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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