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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (d)  If the clearance is not in the tolerance, adjust the clearance: 1) Loosen the bolts (9) that attach the preload pad. 2) Move the preload pad vertically to get the correct
 clearance.
 3) Tighten the bolts (9).

 S 864-048
 (27)
 Do this task: "Pressurize Hydraulic System B" (Ref 27-51-00/201).

 S 864-049

 (28)
 Put the flap control lever in the UP detent to retract the flaps.

 S 214-050

 (29)
 Make sure the seal on the lower trailing edge panel touches the midflap for the full span.

 (a)  
Adjust the seal if it does not touch the midflap for the full span: 1) Install a support to hold the outboard flap in its

 position. 2) Disconnect the torque tubes at each side of the inboard flap outboard transmission.
 3)  Use the flap drive adapter to turn the transmission input until the outboard end of the flap touches the seal. a) Make sure the angular clearance between the ball screw
 upstops is 170 to 190 degrees (1/2 turn |10 degrees). 4) Connect the torque tubes to the transmission. a) Install the lockwire on the screws. 5) Remove the support from the outboard flap.
 S 714-051
 (30)
 Extend and retract the flaps.

 (a)  
Make sure the there is a minimum of 0.25 inch clearance between the ballscrew and other components and structure.

 (b)  
Make sure the outboard ballscrew goes into the preload pad slightly before the flaps are in the full up position.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
737-300/400/500MAINTENANCE MANUAL
 (c)  Make sure that the two end fittings touch the preload pads tightly when the flaps are fully retracted.
 S 224-052
 (31)
 Make sure all the clearances on the flap are in the limits.

 S 864-053

 (32)
 Put the flap control lever in the 40-unit detent to extend the flaps.

 S 214-054

 (33)
 Make sure the linear clearance between the two ballscrew downstops is 1/4 turn or more.

 S 714-055

 (34)
 Put the flap control lever in the UP detent to retract the flaps.

 (a)  
Make sure the flaps move correctly.

 S 864-056
 (35)
 Do this task: "Depressurize Hydraulic System B" (Ref 27-51-00/201).

 S 224-057

 (36)
 Make sure the clearance between the ground spoiler and the top of the midflap is in the tolerance shown in Fig. 402.

 (a)  
If the clearance is not in the tolerance, do this task: "Speedbrake Control System Adjustment" (Ref 27-62-00/501).

 S 224-058
 (37)
 Make sure the bulb seal on the lower forward edge of the ground spoiler is compressed 0.10 to 0.20 inch.

 (a)  
If the seal is not compressed in the tolerance, adjust the seal retainer.

 S 224-059
 (38)
 Make sure the clearance between the trailing edge of the wing and the top of the midflap is in the tolerance shown in Fig. 402.

 (a)  
If the clearance is not in the tolerance, adjust the wing trailing edge panel: 1) Add or remove the shims at the attach points for the panel.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 2) Adjust the bracket on the outboard end to adjust the panel.
 S 864-060
 (39)
 Do this task: "Pressurize Hydraulic System B" (Ref 27-51-00/201).

 S 864-061

 (40)
 Extend the flaps to the 1-unit detent.

 (a)  
Make sure the aft bulb seal on the spoiler and the fixed upper panel touches the foreflap.
　
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