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757
MAINTENANCE MANUAL
Trailing Edge Flaps Sling
Figure 406 (Sheet 2)
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MAINTENANCE MANUAL
GIMBAL CONNECTION
SEE
A-A
GIMBAL CONNECTION
Dimension X Measurement for the Transmission Ball Screw
Figure 407
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MAINTENANCE MANUAL
B27074
BALLSCREW HARNESS ASSEMBLY
Harness Assembly for the Transmission Ballscrew
Figure 408
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757 MAINTENANCE MANUAL
E. Remove the Inboard TE Flap (Fig. 401)
S 024-020
(1)
Do these steps to remove the TE flap:
(a)
Disconnect the lower pushrods for the aft flap at the carriage bellcrank (remove fasteners 2 thru 7, and 8 thru 14).
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM THE DISCONNECTED
_______ LOWER PUSHRODS FOR THE AFT FLAP WHEN YOU EXTEND THE TE FLAPS. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN THE FLAPS MOVE.
(b)
Turn the torque tube for the flap drive manually (or with an air motor) to extend the flaps until the carriages are approximately 3 inches (76.2 mm) from the carriage stops.
(c)
Disconnect the torque tube between the inboard angle gearbox and the inboard tee gearbox (for the inboard flap), at the tee gearbox.
(d)
Disconnect the torque tube between the outboard tee gearbox (for the inboard flap) and the outboard angle gearbox, at the angle gearbox.
(e)
Attach the inboard TE flap sling to the flap (Fig. 406).
WARNING: MAKE SURE THAT THE ANGLE BETWEEN THE CENTERLINES OF THE
_______ TRANSMISSION AND THE BALLSCREW IS NOT TOO LARGE. THIS IS TO PREVENT DAMAGE TO THE TRANSMISSION UNIVERSAL JOINT.
(f) Use a harness to hold each transmission ballscrew (Fig. 408).
NOTE: A manual turn of the torque tubes will be necessary
____ to disconnect the carriages from the ballscrew gimbals.
(g)
Disconnect the carriages from the ballscrew gimbals.
(h)
Remove the carriage stops.
(i)
Remove the fasteners (66 thru 70) from each end of the floating link (65), and remove the floating link.
(j)
Remove the fasteners (44 thru 51) and the eye bolt (43) to disconnect the flap track from the aft link (42).
(k)
Remove the fasteners that connect the aft link to the aft support for the flap track (52 thru 61), and remove the aft link (42).
(l)
Turn the flap in the aft direction and lift it off the flap tracks.
(m)
When the flap is free of the flap tracks, lower the inboard flap track carefully until it touches the adjacent structure.
NOTE: All of the inboard track supports other than the
____ forward support were removed. Thus, the track will turn about the forward connection.
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