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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (2)  S 034-012Disassemble the universal joint (Fig. 402, Sheet 1). (a) Remove the universal joint bolt, nut, and spacer. (b) Move the screw yoke apart from the transmission output shaft and remove the trunnion cross.
 (3)  S 024-013Remove the ballscrew, with the screw yoke and the gimbal, from the airplane.
 (4)  S 034-014Remove the gimbal from the ball nut. (a) On the bottom side of the gimbal, remove the two bolts, the flanged bushing and shims. (b) Make a record of the shim thickness. (c) On the top side of the gimbal, remove the two bolts, the flanged bushing, the cover, and shims. (d) Make a record of the shim thickness. (e) Remove the gimbal from the ball nut.
 (5)  S 034-015Remove the end fitting from the end of the ballscrew. 
COVER 

MIDFLAP FITTING
+0.004
INCH
-0.000

INBD
FLANGED BUSHING (2 LOCATIONS)
SHIM (EXAMPLE)
INCH
CLEARANCE (2 LOCATIONS)

OUTBOARD FLAP GIMBAL WHEN THE OPPOSITE
SURFACE TOUCHES
A-A
Ballscrew of the Outboard Flap Transmission
Figure 402 (Sheet 2)

A55713
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 024-016
 (6)
Remove the bolts that attach the screw to the screw yoke.

 S 024-017

 (7)  
Remove the screw yoke from the screw.

 F.
Remove the ballscrew of an inboard flap transmission (Fig. 403)

 S 034-018
 (1)  
Disconnect the ball nut from the gimbal at the midflap.

 (a)  
On the lower side of the gimbal, remove the two bolts and the bushing.

 (b)  
On the top side of the gimbal, remove the two bolts, and the bushing.

 (c)  
Hold the ball nut and screw to make sure they are not damaged or do not cause damage to parts during the removal.

 S 024-067
 (2)  
Disassemble the universal joint (Fig. 402).

 (a)  
Remove the universal joint bolt, nut, and spacer.

 (b)  
Move the screw yoke apart from the transmission output shaft and remove the trunnion cross.

 S 024-019
 (3)
Remove the ballscrew with the screw yoke from the airplane.

 S 034-020

 (4)  
Remove the end fitting from the end of the screw.

 S 024-021

 (5)
Remove the bolts that attach the screw to the screw yoke.

 (6)  
Remove the screw yoke from the screw.

 S 024-022
 TASK 27-51-73-404-023
 3.  Flap Ballscrew Installation___________________________
 A. Equipment
 (1) C27001-23 or -24, Ground Lock (for spoilers 0, 1, 8, and 9)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
TRANSMISSION OUTPUT SHAFT
UNIVERSAL JOINT BOLT AND CROSS PIN
AIRPLANE
SCREW YOKE STRUCTURE
BOLTS (2 LOCATIONS)
OIL
RESERVOIR
GIMBAL
BALL NUT
BOLTS
(4 LOCATIONS)
BUSHING (2 LOCATIONS)INBD SCREW
BALLSCREW OF THE NO. 3 TRANSMISSION 1
TRANSMISSION OUTPUT SHAFT
GIMBAL
BALL NUT
SCREW
FWD
SCREW YOKE 
UNIVERSAL JOINT 
BOLTS  BOLT  BOLT AND CROSS PIN 
1  BALLSCREW OF THE NO. 6  (4 LOCATIONS)  (2 LOCATIONS) 
TRANSMISSION IS ALMOST THE SAME 

BALLSCREW OF THE NO. 4 TRANSMISSION 2
BALLSCREW OF THE NO. 5 TRANSMISSION IS ALMOST THE SAME
Ballscrews of the Inboard Flap Transmissions Figure 403
A55317
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