737-300 400 500 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(85)

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 b) Spring Scale Method:___________________Attach the Spring Scale to the trim wheel handle using the hook. Pull on the Spring Scale until the clutch disengages. The force necessary to disengage the clutch is 39-52 pounds.
 2)  Stop the handwheel.
 S 085-041
 (4)
Remove the pinion adapter or the pinion gear wrench assembly.

 (5)
Install the stabilizer trim electric actuator (AMM 27-41-71/401).

 S 415-042
 TASK 27-41-00-735-045
 6.  Stabilizer Trim Auxiliary Brake System Test___________________________________________
 A.  Access
 (1)  Location Zones
 101 Control Cabin, LH
 102 Control Cabin, RH
 702 Tail Compartment Access Door

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (2)  
Access Panels
 3701 Stabilizer Trim Access Door

 B.  
Procedure

 S 015-046
 (1)  
Open the access door 3701.

 S 735-044

 (2)  
Do a test of the stabilizer trim auxiliary brake (Fig. 504):

 (a)  
Turn the captain's stabilizer trim control wheel on the control stand approximately two turns clockwise.

 (b)  
Put a 500 pound-inches clockwise torque to the upstop of the jackscrew and hold. 1) Make sure you do not put the torque on the safety rod nut. 2) Make one line on the gearbox coverplate and the umbrella

 assembly.
 3) Release the torque.

 (c)  
Put a 500 pound-inches counterclockwise torque to the upstop of the jackscrew and hold. 1) Make a line on the umbrella assembly in line with the line

 on the coverplate.
 2) Release the torque.

 (d)  
At the outer edge of the umbrella assembly, use a flexible scale to measure the arc distance between the lines. 1) On 65-49970-13 thru -24 stabilizer trim actuators,

 make sure that the arc distance dimension is not more than
 0.52 inch (17.6 degrees).
 2)  On 65-49970-25 and subsequent stabilizer trim actuators, and 65-49970-13 thru -24 actuator with SB 27-1161, make sure that the arc distance dimension is not more than
 0.62 inch (21.0 degrees).
 (e)  
Turn the captain's stabilizer trim control wheel on the control stand approximately two turns counterclockwise.

 (f)  
Put a 500 pound-inches counterclockwise torque to the upstop of the jackscrew and hold. 1) Make sure you do not put the torque on the safety rod nut. 2) Make one line on the gearbox coverplate and the umbrella

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

Stabilizer Trim Auxiliary Brake System Test
Figure 504

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
B02261
 (g)

(h)

(i)

 

A
737-300/400/500MAINTENANCE MANUAL
 3) Release the torque.
Put a 500 pound-inches clockwise torque to the upstop of the
 jackscrew and hold.
 1) Make a line on the umbrella assembly in line with the line

 on the coverplate. 2) Release the torque.At the outer edge of the umbrella assembly, use a flexible scale to measure the arc distance between the lines. 1) On 65-49970-13 thru -24 stabilizer trim actuators,
 make sure that the arc distance dimension is not more than
 0.52 inch (17.6 degrees).
 2)  On 65-49970-25 and subsequent stabilizer trim actuators, and 65C34751 actuators (65-49970-13 thru -24 with SB 27-1161), make sure that the arc distance dimension is not more than
　
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