Flap Jackscrew Preload Pad Adjustment
Figure 403 (Sheet 2)

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 3) Remove the bushings until you can remove the shims. 4) Adjust the shim laminations until the clearance is in the tolerance.
 NOTE: Make sure you keep the 0.006 to 0.010 inch clearance
____ between one bushing and the ballscrew nut with contact at the opposite side.
 5) Install the bolts for the vertical gimbal busings.
 (h)  
Put the flap control lever in the UP detent to retract the flaps.

 (i)  
During the retraction, make sure the ballscrew does not touch the linkage or the structure.

 (j)  
Measure dimension A: 1) With the flaps retracted, apply a force up on the aftflap. 2) Measure the dimension A.

 (k)  
Put the flap control lever in the 1-unit position to extend the flaps.

 (l)  
Install the preload pad for the flap ballscrew: 1) Install the preload pad with the shims. 2) On airplanes with the horizontally adjustable preload pads

 for the No. 2 and 7 ballscrews, Make sure the preload pad is centered below the ballscrew. 3) Make sure the dimension C for the No. 1 and 8 ballscrews is the same as the dimension A minus 0.52 to 0.56 inch. 4) Make sure the dimension C for the No. 2 and 7 ballscrews is the same as the dimension A plus 0.04 to 0.08 inch.
 5)  If the dimension C is larger than the permitted dimension, adjust the vertical clearance between the ballscrew and the aftflap.
 (m)  
Put the flap control lever in the UP detent.

 (n)  
Make sure the end fitting on the ballscrew goes into the preload pad before the flap is fully retracted.

 (o)  
Make sure the end fitting on the ballscrew touches the preload pad tightly when the flaps are fully retracted.

 (p)  
Install the aft fairing.

 (q)  
Make sure the aftflap moves freely and does not touch the structure.

 S 214-024
 (14)
 Make sure the aftflap moves smoothly and does not touch the
 structure.

 G.  
Put the Airplane Back to Its Usual Condition

 (1)  
Pressurize the hydraulic system B (Ref 27-51-00/201).

 (2)
Put the flap control lever in the UP detent to retract the flaps.

 S 864-027
 S 864-025
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 S 864-026
 (3) Release the pressure from hydraulic system B (Ref 27-51-00/201).
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 OUTBOARD AFTFLAP - INSPECTION/CHECK
___________________________________
 1.  General_______
 A.  There is one task in this procedure, an inspection of the outboard aftflap. To do this check you measure the diameters of the bushing and the bolt that attaches the bottom flight rollers.
 B.  You usually do this procedure before you install an aftflap.
 TASK 27-51-39-226-001
 2.  Outboard Aftflap Inspection___________________________
 A.  Standard Tools and Equipment
 (1)  
Micrometer - 0 to 1 inch

 B.  
References

 (1)  
27-51-39/401, Outboard Aftflap

 C.  
Access

 (1)  
Location Zone 307, 407 Wing Trailing Edge Outboard Flap and Spoilers
　
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