G. Prepare for removal.
SUBTASK 24-21-21-860-001
WARNING
REMOVE ELECTRICAL POWER BEFORE YOU REMOVE OR INSTALL
COMPONENTS IN THE POWER DISTRIBUTION PANELS. THERE ARE HIGH
VOLTAGES THAT CAN CAUSE INJURIES TO PERSONNEL AND DAMAGE TO
EQUIPMENT.
(1) Do this task: Remove Electrical Power, TASK 24-22-00-860-812.
(a) Make sure that all of the power warning lights on the power distribution panel are off.
SUBTASK 24-21-21-010-001
(2) Open this access panel to get access to the main equipment center.
Number Name/Location
117A Electronic Equipment Access Door
H. Procedure
SUBTASK 24-21-21-010-002
(1) Get access to the forward cargo area and do the steps that follow:
(a) Remove the applicable forward bulkhead liner to get access to the rear of the power
distribution panel.
SUBTASK 24-21-21-020-001
(2) Remove the power feeders from the power distribution panel, do the steps that follow:
(a) Install identification tags on the power feeders before removal.
(b) Remove the nuts [6] and washers [7] from each terminal stud.
(c) Remove the power feeders from the terminal studs.
SUBTASK 24-21-21-020-002
(3) Remove the cooling duct from the power distribution panel per the steps that follow:
(a) Remove the four screws [8] and washers [9] that hold the cooling duct to the power
distribution panel.
(b) Pull the duct away from the panel and remove the gasket [10].
SUBTASK 24-21-21-020-003
(4) Remove the electrical connectors from the power distribution panels.
SUBTASK 24-21-21-020-004
(5) Remove the two ground straps from the power distribution panel per the steps that follow:
(a) Remove the two nuts [2] and washers [3] from the ground studs on the power distribution
panel.
NOTE: Do not remove the other end of the ground strap attached to the airplane
structure.
(b) Remove the ground strap from the ground stud on the power distribution panel.
NOTE: Move the strap or use tape to hold the strap so that it does not interfere with the
panel when it is removed.
SUBTASK 24-21-21-020-005
(6) Remove the Power Distribution Panel [1], do the steps that follow:
(a) Remove the four bolts [5] and washers [4] located at the corners of the power distribution
panel.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-21-21
Page 405
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
To Next Page
Loading...
