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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 424-056
(7) Carefully start to install the E/E box into the tray.
NOTE: For easier installation of the E/E box, lift the front of the
____ E/E box approximately 1/8 inch above the tray surface.
S 424-057
(8) Continue to move the E/E box into the tray and engage the electrical connector.
NOTE: The E/E box will engage with the electrical connector easier
____ if you shake the front of the E/E box from right to left for approximately 1/8 inch. While you shake the box, apply a light horizontal force to the front of the E/E box.
S 824-058
(9)
Turn the keeper to put the deep slot near to and aligned with the T-hook.
S 434-059
(10)
Put the extractor on the T-hook and turn the keeper 180 degrees.
S 434-060
(11)
To tighten the front hold-down extractor, turn the knob clockwise until the clutch engages fully.
NOTE: You will feel clicks while you turn the knob.
____
S 214-061
(12)
Shake the E/E box to make sure of a tight fit. Tighten the extractor.
(13)
Make sure the electrical connector is engaged.
S 214-062
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 434-063
(14)
Install the connections to the front of the E/E box, if applicable.
S 864-064
(15)
Close all applicable circuit breakers.
C.
AIRPLANES WITH HOLLINGSEAD EXTRACTOR; Install the E/E Box
S 914-065
CAUTION: DO NOT TOUCH THE E/E BOXES BEFORE YOU DO THE PROCEDURE FOR
_______ DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE (AMM 20-41-01/201). SOME E/E BOXES ARE ELECTROSTATIC SENSITIVE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO DEVICES IN THE E/E BOX.
(1) Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
S 214-109
CAUTION: MAKE SURE THE ELECTRICAL PINS ON THE E/E BOX CONNECTOR AND TRAY
_______ CONNECTOR ARE NOT BENT OR DAMAGED. INSTALLATION OF E/E BOX WITH DAMAGED PINS CAN CAUSE DAMAGE TO THE E/E BOX, TRAY ELECTRICAL CONNECTOR, OR SYSTEM COMPONENTS.
(2)
Make sure the rubber plugs are installed in the metering tray at the correct locations. Compare the orifice configuration of the metering tray with that shown on decal.
S 344-067
(3)
Remove the dust caps from the electrical connectors.
S 214-069
(4)
Make sure the tray gasket and restrictor plugs (variable number) are in the correct positions. Install if necessary.
(5)
Carefully start to install the box into the tray.
S 424-070
NOTE: For easier installation of the E/E box, lift the front of the
____ E/E box approximately about 1/8 inch above the tray surface.
S 424-071
(6) Continue to move the box into the tray and engage the electrical connector.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú 01 Page 410 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 824-072
(7)
Align the front hold-down extractor with the T-hook. Put the extractor on the T-hook and turn the latch clockwise.
S 434-073
(8)
Turn the knob on the front hold-down extractor clockwise until you cannot see the red band and the clutch engages.
