(g)
If the change in dimension A is not in the tolerance, adjust the leaf springs as follows: 1) Remove the access panels from the top surface of the
midflap. 2) Remove the five fasteners that attach the leaf spring. 3) Change or move the tapered fillers until the deflection is
in the tolerance.
NOTE: You can install the tapered fillers independantly
____ or at each track location. You can put the thick end forward or aft. It is not necessary for the thick end of the tapered fillers to be in the same location.
4) Attach the leaf spring with the bolt at the forward attach point. 5) Attach the retainer and the radius filler:
a) Install the shims between the retainer and the midflap to keep a 0.005 to 0.015 inch clearance between the leaf spring and the retainer.
NOTE: If you change the shims below the carriage
____ bearing support, change the thickness of the shims at the leaf springs (i.e. if you add a
0.01 inch shim below the carriage bearing support, remove a 0.01 inch shim below the leaf spring retainer).
b) Install the four washers and nuts.
c) Tighten the 1/4 inch nuts to 50-70 pound-inches.
d) Tighten the 5/16 inch nuts to 100-140 pound-inches.
e) Install the cotter pins in the nuts.
S 435-030
(4) Install the flap track fairing (AMM 27-51-52/401).
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A 737-300/400/500MAINTENANCE MANUAL
(5) S 825-031Do the flap track fairing adjustment (AMM 27-51-52/501).
NOTE:____ Do not install the aft fairing at this time.
(6) S 865-032Do this task to pressurize hydraulic system B: Power" (AMM 27-51-00/201). "Supply Hydraulic
(7) S 865-033Move the flap control lever to the UP position to retract the flaps.
(8) S 865-034Do this task to depressurize hydraulic system B: Power" (AMM 27-51-00/201). "Remove Hydraulic
(9) S 225-008Make sure the flap aligns with the wing chord plane (WCP) (Fig. 501):
NOTE:____ If you cannot find the thickness of the shims that you removed, you must adjust the two outboard flaps. It is necessary to use the outboard flap rigging beam in this procedure.
(a) Install the outboard flap rigging beam on the black stripes at WBL 228.5 on the front and rear spar.
NOTE:____ Use tool drawing F80209 to make sure the black stripes are in the correct location on the lower surface of the wing.
(b) (c) (d) (e) Make sure the aftflap is in the retracted position: 1) Apply a maximum of a 30-pound force up against a 4.0 x 6.0 inch aluminum plate near the aftflap track roller. 2) The aftflap is in the retracted position when the clearance between the trailing edge of the midflap and the leading edge of the aftflap is 0.01 to 0.20 inch for the full length of the aftflap.Make sure the aftflap flight rollers touch the aftflap track.Make sure a minimum of three flap carriage flight rollers touch the flap track.With the rigging beam, measure the position of the trailing edge of the aftflap.
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A
737-300/400/500
MAINTENANCE MANUAL
A SEE A
A SHIM
INBD
SEE B
RAMP ROLLER FWD
MIDFLAP A
FRONT SPAR 0.06 MINIMUM 0.03 INCH WING PANEL FIXED REAR SPAR +0.06 -0.03 INCH 1 PLANE (WCP) WING CHORD
RIGGING BEAM OUTBOARD FLAP A-A FOREFLAP MIDFLAP AFTFLAP
0.04 0.20 INCH MIDFLAP PLATE LOCKING B PLATE LOCKING BOLT MIDFLAP
SHAFT ROLLER
ROLLER NUT
FAIRING TRACK WASHER B
1 AT EACH END OF THE FLAP MEASURE THIS CLEARANCE B B-B
Figure 501 (Sheet 1) Outboard Trailing Edge Flap Positioning
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