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 CAUTION:_______ REMOVE THE PRELOAD PAD ON THE FLAP BALLSCREW IF YOU
 INCREASED THE THICKNESS OF THE SHIMS BELOW THE
 CARRIAGE BEARING SUPPORT.  A CHANGE IN THE SHIM
 THICKNESS WILL CHANGE THE ADJUSTMENT OF THE PRELOAD
 PAD.  AN INCORRECT ADJUSTMENT CAN CAUSE DAMAGE TO THE
 PRELOAD PAD.

 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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL

GIMBAL BUSHING BALLSCREW DOWNSTOP
FLAP

INBD

Flap Transmission Assembly Adjustment Figure 504
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
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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A
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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