S 014-003
(2) Get access to the transformer as follows:
(a) The two transformers are installed in the forward cargo compartment on the main deck floor beams.
S 024-007
(3) Remove the ceiling lining adjacent to the transformer (AMM 25-52-01/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
33-41-01
ALL ú ú 01 Page 401 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
INBD
Wing Illumination Light Transformer Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
33-41-01
ALL ú ú 01 Page 402 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 034-008
(4)
Remove the four transformer mounting screws.
S 034-009
(5)
Look at the position of the electrical wires to make sure you install the replacement transformer correctly.
NOTE: Hold the loose transformer to make sure you do not do damage
____
to the electrical wires.
S 024-045
(6)
Remove the covers from the two terminal boards of the transformer.
S 034-046
(7)
Disconnect the electrical wires from the transformer.
S 024-044
(8)
Remove the transformer.
TASK 33-41-01-404-010
3. Transformer Installation (Fig. 401)
________________________
A. References
(1)
AIPC 33-41-10
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 25-52-01/401, Containerized Cargo Compartment Ceiling and Sidewall Linings
(4)
SSM 33-41-10
B. Access
(1) Location Zone
100 Forward Cargo Compartment Overhead
C. Procedure
S 434-011
(1)
Remove the terminal board covers on the replacement transformer.
S 434-012
(2)
Connect the electrical wires to the terminals in the sequence that they were removed.
NOTE: Hold the transformer to make sure you do not do damage to the
____
electrical wires.
S 424-013
(3) Replace the covers on the transformer terminal boards.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
33-41-01
ALL ú ú 01 Page 403 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 434-014
(4)
Put the transformer in its position on the mounting bracket and install the four screws.
S 864-017
(5)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:
(a) P6 Main Power Distribution Panel
1) 6L33, WING ILLUM LTS
S 714-047
(6) Do a test of the lights:
(a)
Supply electrical power (AMM 24-22-00/201).
(b)
Put the WING switch on the P5 panel to ON.
(c)
Make sure the lights are on.
(d)
Put the WING switch on the P5 panel to OFF.
(e)
Make sure the lights are off.
(f)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
D. Put the airplane back to its usual condition.
S 414-015
(1) Install the ceiling lining (AMM 25-52-01/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:747-400 AMM 飞机维护手册 灯 LIGHTS(80)