1) Hold the rigging bar against the lower surface of the wing at the location shown.
NOTE: Hold the rigging bar only at the HAND HOLD areas.
____
2) The two nylon blocks must touch the lower surface of the wing at a point along the center line of the front spar and the rear spar.
3) The scale at the end of the rigging bar must lightly touch ú the trailing edge of the aft flap. 4) Use the lower surface of the aft flap to read the position on the scale.
(b) Install the rigging bar for the inboard end of the inboard flap by the instructions that follow (Fig. 506):
NOTE: One person is necessary to hold the rigging bar in
____
position.
1) Hang the rigging bar on the main landing gear beam below
the wing and install the pins at the locations shown. 2) Hold the rigging bar only at the HAND HOLD area. 3) The scale at the end of the rigging bar must lightly touch
ú the inboard trailing edge of the main flap.
4) The nylon block on the forward end of the rigging bar must touch the side of the airplane body at the centerline of the rear spar.
5) Use the lower surface of the aft flap to read the position on the scale.
(c)
Read the scale to make sure that the flap trailing edge is in the limits (Views A-A and B-B, Fig. 504).
(d)
Do these steps to adjust the angle of the inboard flap if you cannot get the above condition to agree (Fig. 504): 1) Loosen the bolts attached to the aft roller support and the
carriage at the inboard flap track. 2) Add or remove shims as necessary to get the correct angular dimensions.
NOTE: A 0.05 inch (1.27 mm) change in shim thickness will
____ give an approximate angle change of 0.13 degree.
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27-51-02
ALL ú ú 01.1 Page 521 ú Sep 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
3) Tighten the bolts for the aft roller support after you corrected the flap position.
S 225-052
(19)
Do a check on the inboard flap fit and fair with the steps that follow (Fig. 505):
(a)
Make sure the trailing edge of the inboard flap agrees with the trailing edge of the outboard flap to |0.10 inch (2.54 mm) in the vertical direction. If fuel is added to the airplane, or the engines are installed, the mismatch can be as much as 0.30 inch (7.62 mm). 1) Adjust the inboard flap as necessary to get this condition.
(b)
Make sure that the clearance between the fixed upper panel for the inboard flap agrees with the upper surface of the inboard flap. 1) Adjust the rod assemblies on the fixed upper panel as
necessary to get the surfaces to agree. 2) Install the lockwire on the jam nuts as necessary.
(c)
Make sure that the surface alignment of the lower TE panel agrees with the lower surface of the main flap. 1) Adjust the rod assembly and the serrated plates as
necessary to get the trailing edge surfaces to agree.
(d)
Make sure that the leading edge of the main flap touches the seal on the lower TE panel along the entire length of the flap. 1) Add or remove shims as necessary to make the correct seal
deflection.
(e)
Make sure that the seal on the inboard end of the main flap is within the specified tolerances from the body fairing. 1) Loosen the adjustment screws to adjust the seal as
necessary.
S 215-030
(20)
Make sure that rig pins TE2 and TE3 are installed (Fig. 501) and that the inboard flap is in the correct rigging position.
S 435-005
(21)
Adjust the length of the lower pushrods for the aft flap and connect it to the bellcranks (Fig. 501).
(a)
Tighten the nut to attach the lower pushrod for the outboard linkage to 130-170 inch-pounds (14.7-19.2 newton-meters).
(b)
Tighten the nut to attach the lower pushrod for the inboard linkage to 370-450 inch-pounds (41.8-50.8 Nm).
(22)
Remove rig pins TE2 and TE3.
(23)
Install the aft fairing for the flap track (Ref 27-51-30).
(24)
Install the trunnion fairing door for the MLG (Ref 32-12-10).
S 095-031
S 425-032
S 425-033
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