11) If you increased the thickness of the shims, remove the preload pad (Fig. 505). 12) Make sure the deflection of the leaf spring is in the
limits.
13) Adjust the flap track fairing (AMM 27-51-52/501).
14) Do the adjustment of the trailing edge of the aftflap
again.
S 865-010
(10)
Do this task to pressurize hydraulic system B: "Supply Hydraulic Power" (AMM 27-51-00/201).
S 865-011
(11)
Move the flap control lever to the 40-unit detent to extend the flaps.
S 865-044
(12)
Do this task to depressurize hydraulic system B: "Remove Hydraulic Power" (AMM 27-51-00/201).
S 435-042
(13)
At the outboard end of the midflap, install the ramp on the midflap.
S 085-043
(14)
At the inboard end of the midflap, remove the clamp from the roller shaft (Fig. 501).
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A
737-300/400/500
MAINTENANCE MANUAL
GIMBAL BUSHING BALLSCREW DOWNSTOP
FLAP
INBD
Flap Transmission Assembly Adjustment Figure 504
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A 737-300/400/500MAINTENANCE MANUAL
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737-300/400/500MAINTENANCE MANUAL
S 865-036
(15)
Do this task to pressurize hydraulic system B: "Supply Hydraulic Power" (AMM 27-51-00/201).
S 865-038
(16)
Move the flap control lever to the UP postion to retract the flaps.
S 865-037
(17)
Do this task to depressurize hydraulic system B: "Remove Hydraulic Power" (AMM 27-51-00/201).
S 225-039
(18)
At the outboard end of the midflap, examine the adjustment of the ramp and the roller:
(a)
Make sure the outboard part of the roller does not extend more than 0.05 inch beyond the outboard part of the ramp.
PRELOAD PAD
INBD
DIMENSION "C" MUST BE THE SAME AS DIMENSION "A"
PLUS 0.04 TO 0.08 INCH (1.02 TO 2.03 mm)
(SEE VIEW B FOR MEASUREMENT OF DIMENSION "A")
SHIMSDIMENSION "C" MUST BE THE SAME AS DIMENSION "A" MINUS 0.52 TO 0.56 INCH (13.21 TO 14.22 mm)
AIRPLANES WITHOUT HORIZONTALLY ADJUSTABLE PRELOAD PAD PRELOAD PAD
AIRPLANES WITH HORIZONTALLY ADJUSTABLE PRELOAD PAD
YOU CAN INSTALL THE PAD IN THE OPPOSITE DIRECTION IF IT IS NECESSARY
PRELOAD PAD
MOUNTING HOLES
PRELOAD PAD
Flap Drive Ballscrew Preload Pad Adjustment
Figure 505 (Sheet 2)
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737-300/400/500MAINTENANCE MANUAL
(b)
If the roller and the ramp do not align in the limit, adjust the thickness of the shims below the ramp. The maximum thickness of the shims is 0.15 inch.
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