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747-400 MAINTENANCE MANUAL
UPLOAD ATTACHMENT LOAD CELL
BULKHEAD ENGINE MOUNT STRUT FORWARD NACELLE STRUT
POINT ATTACH STRUT (EXAMPLE) STRUT
LOAD CELL
DOWNLOAD ATTACHMENT
DIAGONAL BRACE UNLOAD SLING G54007
Nacelle Strut Removal/Installation
Overhead Mechanical Equipment
Figure 402 (Sheet 1)
C88580
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747-400
MAINTENANCE MANUAL
STRUT LIFT POINTS (USE APPROPRIATE HOLE
HOISTING SLING G54004
Nacelle Strut Removal/Installation
Overhead Mechanical Equipment
Figure 402 (Sheet 2)
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747-400 MAINTENANCE MANUAL
S 494-002
WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP
CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL
MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP
CONTROL LEVER. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO
EQUIPMENT.
(1)
Do this task: "Leading Edge Flap Retraction" (AMM 27-81-00/201).
S 014-003
(2)
Remove the engine (AMM 71-00-02/401).
S 014-004
(3)
Remove the thrust reverser halves (AMM 78-31-01/401).
S 864-005
(4)
Remove the electrical power from the nacelle strut (AMM 24-22-00/201).
S 864-006
(5)
Make sure that the external electrical power is disconnected.
S 864-106
(6)
Make sure that the airplane is grounded.
S 864-007
(7)
Make sure that the toggle switches of the fuel control on the engine start module are in the CUTOFF position.
S 864-008
(8)
Make sure that the hydraulic system is released of the pressure (AMM 29-11-00/201).
S 864-009
(9)
Make sure that the engine fuel and hydraulic supply shutoff valves are closed.
S 864-107
(10)
Make sure that the electrical plugs are disconnected from the valves.
S 684-010
(11)
Make sure that the fuel supply line and hydraulic fluid lines connected to the engine are drained.
(12)
Open the TE fairing doors (AMM 54-62-00/201).
S 014-011
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747-400
MAINTENANCE MANUAL
S 014-012
(13)
On inboard struts, remove the forward fixed fairing.
S 014-014
(14)
On inboard struts, remove 12 screws and washers that attach the lower section of the web to the fixed fairing support.
NOTE: This is found at Nac. Sta. 456 on the aft edge of the TE
____
fairing doors.
S 014-109
(15)
Remove the lower section of the web.
S 014-016
(16)
Open all the strut access and pressure relief doors (AMM 54-62-00/201).
S 014-017
(17)
On outboard struts, remove the forward fairing No. 4.
S 014-164
(18)
On outboard struts, remove the outboard strut bracket assembly (Fig. 401).
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