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 S 726-008
 (7)  Do a test of the minimum lockout torque: (a) Install the spline adapter on the input coupling of the right angle gearbox. (b) Attach the torque wrench to the adapter on the gearbox. (c) Slowly increase the torque applied to the adapter until the torque is at the limit.
 NOTE:____ It can be necessary to turn the input coupling 3/4 turn.
 1) 2)  The limit for transmissions 1, 3, 4, 5, 6 and 8 is 180 pound-inches.The limit for transmissions 2 and 7 is 210 pound-inches.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SEEA 1
2

3
UNIVERSAL JOINT
4
5
6
7
8

TRANSMISSION LOCATIONS
FWD
BALLSCREW
INBD
UNIVERSAL JOINT TRANSMISSION NO. 1 AND 8
FWD
INBD
BALLSCREW
TRANSMISSION NO. 2 AND 7
BALLSCREW
UNIVERSAL JOINT UNIVERSAL JOINT
BALLSCREW
FWD
INBD
INBD
FWD
TRANSMISSION NO. 4 AND 5  TRANSMISSION NO. 3 AND 6
Flap Transmission Check
Figure 601 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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

FLAP RIGHT TORQUE TUBE
ANGLE GEARBOX COUPLING SLEEVE
FWD
TORQUE TUBE
WHEEL WELL
AFT BULKHEAD

RIGHT GEARBOX SHOWN (LEFT GEARBOX EQUIVALENT)
A
TORQUE TUBE
SLEEVE
COUPLING
TORQUE TUBE COUPLING SLEEVE
B
Flap Transmission Check Figure 601 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (d)  Make a note of the indication on the torque wrench on the universal joint when the necessary input torque is applied (Fig. 602).
 NOTE:____This torque value is the minimum lockout torque. You should do the test of the lockout torque in the same direction as the flap movement during the lockout.
 S 726-009
 (8)  
Do the test of the minimum lockout for all applicable transmissions.

 G.
Put the Airplane Back to Its Usual Condition

 S 086-010
 (1)  
Remove the torque wrenches and adapters.

 S 036-011

 (2)  
Install the ballscrew yoke in the universal joint:

 (a)  
Put the ballscrew in its position.

 (b)  
Apply a layer of the BMS 3-24 grease to the bolt.

GEARBOX TRANSMISSION  (LB-IN.) TORQUE LOCKOUT MINIMUM 2  DIRECTION TO APPLY TORQUE TO THE RIGHT ANGLE GEARBOX 1 
FLAPS EXTEND  FLAPS RETRACT 
LEFT WING  RIGHT WING  LEFT WING  RIGHT WING 

NO. 1 & NO. 8  580  CLOCKWISE  COUNTERCLOCKWISE  COUNTERCLOCKWISE  CLOCKWISE 
NO. 2 & NO. 7  850  CLOCKWISE  COUNTERCLOCKWISE  COUNTERCLOCKWISE  CLOCKWISE 
NO. 3 & NO. 6  350  CLOCKWISE  COUNTERCLOCKWISE  COUNTERCLOCKWISE  CLOCKWISE 
NO. 4 & NO. 5  330  CLOCKWISE  COUNTERCLOCKWISE  COUNTERCLOCKWISE  CLOCKWISE 

LOOKING OUTBOARD AT RIGHT ANGLE GEARBOX INPUT SHAFT.
THESE VALUES ARE SLIGHTLY LOWER THAN THE VALUES LISTED FOR THE OVERHAUL FUNCTIONAL TEST WHEN USING THE FUNCTIONAL TEST RIG. THIS DIFFERENCE IS NECESSARY TO ACCOUNT FOR THE DIFFERENT METHOD OF TESTING.
Torque Brake Minimum Lockout Torques
Figure 602

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