_______
PANEL OR RETAINING PLATES IN ITS POSITION. TAPE OR ADHESIVES CAN CAUSE THE PANEL NOT TO OPERATE AND CAUSE DAMAGE TO THE AIRPLANE.
(e)
Hold the panel and the forward retaining plate at the bottom in their position.
(f)
From the inner part of the wing, align the 2 shims and the top retaining plate with the bottom retaining plate.
(g)
Apply BMS3-28 lubricant to the fasteners prior to installation (AMM 20-51-01/201).
NOTE: The BMS 3-28 will prevent corrosion on the threads of
____ the fasteners and make them easier to remove.
(h) First put in only two screws at the ends of the retaining plate to align the shims together with the retaining plates.
NOTE: This will prevent movement of the shims and the
____
retaining plates.
(i)
Make sure that you install the panel in the center of the cutout in the wing.
(j)
Adjust the position of the panel to permit an equal space around the forward and aft edges of the panel (Fig 401, View A-A).
(k)
Install the remaining screws.
(l)
Keep the screws sufficiently loose to permit panel adjustment.
(m)
Tighten all of the screws.
(n)
Close access panel 611 FB.
S 394-005
(2) Seal the panel.
(a)
Use the recommended solvent to clean the areas that follow (See Fig 401): 1) The space between the 2 panels (See side (A)). 2) The space between the panel and the skin (See sides (B)). 3) The space between the skin and the forward retaining plate
at the bottom (See side (C)).
(b)
Dry the areas that you cleaned with compressed air.
NOTE: The air must be clean and dry.
____
(c)
For the last step, rub the area with a clean cloth, moist with solvent.
(d)
Use a clean cloth to dry the area.
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747-400 MAINTENANCE MANUAL
(e) Apply sealant between the spaces in the skin (Sides (A), (B)
(C) and the aft edge of the retaining plate.)
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ATTACH FITTINGS - DESCRIPTION AND OPERATION
___________________________________________
1. General_______
A. Attach fittings fasten major components to main wing structure, splice main wing structural components to each other, and attach the wing to the fuselage.
2. Wing Attach/Splice Fittings___________________________
A. Wing splice fittings are made from aluminum forgings and are used to join the outboard wing spars to the center wing spar and wing-to-body ribs and wing extension join rib (Ref 57-41-00).
3. Flight Control Attach Fittings______________________________
A. Flight control attach fittings are used to attach flaps, ailerons, spoilers, and actuation mechanisms to the wing (Ref 57-42-00).
4. Landing Gear Attach Fittings____________________________
A. Landing gear attach fittings anchor the wing landing gear to the wing. The fittings which attach the wing landing gear doors to the wing are part of the landing gear attach fittings (Ref 57-43-00).
5. Nacelle Strut Attach Fittings_____________________________
A. Inboard and outboard nacelle strut attach fittings support the engine and transmit the thrust developed by the engine into the wing.
B. There are fittings installed on the left wing which can be used to carry a spare engine (AMM 57-44-00).
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