747-400 AMM 飞机维护手册 起落架 LANDING GEAR 1(141)

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 (5)  S 824-031Align the lower end of the lower side strut with the spindle (27).
 (6)  S 644-073Apply sealant BMS 5-95 around the surfaces and edges of the bushing of the lower side strut spindle.
 NOTE:____ If you see the old sealant breaks and the bushing rotates.
 (7)  S 434-063Install each side plate (24) between the spindle (27) and the lower side strut (6).
 (8)  S 644-032Lubricate the shank of the spindle bolt (30), the washer (22), and the nut (21).

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 434-033
 (9)  
Install the spindle bolt (30) with the lubrication insert (29), the tang washer (22), and the nut (21).

 S 434-034

 (10)
 Assemble the truck lock components:

 (a)  
Align the link (25) with the holes in the side plates (24).

 (b)  
Put the two bolts with the washers in the side plates (24) to hold the link (25) and the pushrod end (26).

 (c)  
Align the roller (23) with the holes in the side plates (24).

 (d)  
Put the bolt with the washer through the side plates (24) to hold the roller.

 (e)  
Install the three washers on the ends of the bolts with the three nuts. 1) Tighten each nut 36 to 60 pound-inches. 2) Install the cotter pins.

 S 434-035
 (11)
 Install the nut (21) on the end of the spindle bolt (30):

 (a)  
Tighten the nut (21) 40 to 50 pound-feet.

 (b)  
Loosen the nut (21) to align the nearest castellation with the lockbolt hole in the spindle bolt (30).

 (c)  
Install the lockbolt (20) with the washer and the self-locking nut.

 S 824-064
 (12)
 Align the lockbolt hole in the lubrication insert (10) with the lockbolt holes in the apex bolt (13).

 S 434-065

 (13)
 Install the lockbolt (14) in the apex bolt (13) through the rotation stop.

 S 434-066

 (14)
 Install the washer with the self-locking nut.

 (a)  
Tighten the nut 10 to 20 pound-inches more than the torque which is necessary to turn the nut.

 S 094-037
 (15)
 Remove the bungee tool from the downlock bungee (2) (Ref 32-32-16/401).

 (16)
 Adjust the truck lock mechanism (AMM 32-11-23/501).

 S 434-040

 (17)
 Connect the lower end of the downlock actuator (4) to the lower side strut (6).

 S 224-038
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 ALL  ú ú 03 Page 409 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 434-067
 (18)
 Connect the hydraulic hoses (4) to the downlock actuator (4).

 S 864-041

 (19)
 Supply the power from hydraulic system 4 (Ref 29-11-00/201).

 S 214-042

 (20)
 Examine the hydraulic fittings for leaks.

 H.
Put the Airplane in Its Usual Condition

 S 864-043
 (1)  
Lower the airplane to the ground (AMM 07-11-01/201).

 (a)  
Remove the jacks.

 S 094-044
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO REMOVE
_______ THE DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  
Do this task: "Removal of the Door Locks from the Wing Landing Gear" (AMM 32-00-30/201).

 S 094-070

 (3)  
Do this task: "Removal of the Door Locks from the Body Landing Gear" (AMM 32-00-30/201).

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