S 424-066

 (5)  
Hold the other washer (15) in place and put the spacer (17) into the hinge assembly.

 S 424-064
 S 424-065
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 55-17-51
 ALL  ú ú 01 Page 407 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (6)  S 424-067Install the outer pin (16) and the pivot pin screw (12) together into the hinge assembly.
 (7)  S 644-025Apply the grease to the threads in the nut (2).
 (8)  S 424-014Install and tighten the nut (2) until there is no clearance between the spacer (17) and the bearing (5).
 (9)  S 644-027Apply the grease to the inner pivot pin (14).
 S 424-028

 (10)
 Install the inner pivot pin (14).

 S 824-029

 (11)
 Adjust the pivot pin assembly as follows:

 NOTE: Prevent excessive loading of the hinge joints during
____ installation.
 (a)  On the right side, loosen the screw (12) and the nut (2).
 NOTE: This will let you adjust the pivot joint on the left
____ side.
 (b)  
Make sure you can turn the left-hand outer pivot pin (16) easily with your hand.

 (c)  
Adjust the screw (12) and the nut (2) until the horizontal stabilizer assembly is in the center position.

 NOTE: When you turn the screw (12), do not apply more torque
____ than the break-away torque plus 25 pound-inches.
 (d)  Tighten the nut (2) until there is no clearance between the bearing (5) and the spacer (17), and the screw (12) and the bearing (5).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 55-17-51
 ALL  ú ú 01 Page 408 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (e)  Make sure the clearance between the horizontal stabilizer and the outer face of the clevis fitting is equal within 0.030 on both sides.(View A-A, Fig. 401)
 S 434-068
 (12) Install the pivot pin assembly.
 NOTE: The instructions that follow are for the left side only.
____
 (a)  Make sure the horizontal stabilizer is in the center and the mating parts are correctly installed, and then do these steps: 1) Loosen the screw (12) approximately one quarter of a turn.
 Then, tighten the screw (12) to a torque that is equal to the break-away torque plus 25 pound-inches.
 NOTE: You can turn back the screw (12) a maximum
____ of 30 degrees to help you align the slots.
 2)  Loosen the nut (2) approximately one quarter of a turn. Then tighten the nut (2) to 25-30 pound-inches.
 NOTE: You can turn back the nut (2) a maximum
____ of 30 degrees to help you align the slots.
 (b)  
Apply a thin layer of BMS 3-27 to the threads of the trap fitting (18).

 (c)  
Apply grease to the trap fitting (18) and to the internal lock bolt (4).

 (d)  
With the trap fitting (18) internal lock bolt (4) and cotter pin (1) together, install this unit into the inner pivot pin.

 (e)  
Apply a torque of 500-700 pound-inches to the trap fitting (18)

 (f)  
Apply the grease to the anti-rotation plate (8).

 (g)  
Install the anti-rotation plate (8).

 (h)  
Install the washer (9) and the nut (10) to 220-410 pound-inches

 (i)  
Install the cotter pin (11).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 55-17-51
 ALL  ú ú 01 Page 409 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (j)  Measure the distance "G" between the inboard face of the pivot fitting at the same location as was done before (Fig. 401). Compare the before and after dimensions.
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 安定門 STABILIZERS(13)