S 434-010
 (1)  
Do the steps to assemble the yoke connection bolt lubrication insert (3) for installation:

 (a)  
Examine the O-rings (4, 7) on the lubrication insert (3) for worn areas or damage and replace them if it is necessary.

 (b)  
Apply a large quantity of grease on the O-rings (4, 7), the lubrication insert (3), and the innner surface of the center brake rod bolt (6).

 (c)  
Put the O-rings (4, 7) on the lubrication insert (3) and lubricate them again if it is necessary.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-42-20
 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
 (d)  Put the lubrication insert (3) into the bolt (6) to form the yoke connection bolt assembly.
 S 424-011
 (2)  
Do the steps that follow to install the brake rod:

 (a)  
Butter lubricate the bolt (6), the nut (2) and the washer (1) with grease.

 CAUTION: INSTALL THE BRAKE RODS WITH THE LARGER CLEVIS CUTOUT
_______ POINTED UP. IF THE LARGER CUTOUT POINTS DOWN, THE BRAKE ROD AND YOKE CAN HIT AND CAUSE DAMAGE TO PARTS.
 (b)  
Align the brake rod (9) with the inner cylinder yoke.

 (c)  
Install the yoke connection bolt assembly in the brake rod and innner cylinder yoke. 1) Install the bolt with the bolt head on the side of the

 brake rods that is farthest from the truck beam.
 NOTE: The bolt head and the grease fitting must point out,
____ with relation to the truck beam.
 2)  Tighten the nut (2) to 144 - 720 pound-inches.
 3)  Loosen the nut, if it is necessary, to the nearest castellation and install a lockbolt (5), washer, and a self locking nut.
 (d)  Apply a layer of grease to the brake rod bolt (8), nut, and washer.
 CAUTION: MAKE SURE THE SERVICING STEPS TO THE SHOCK STRUT WERE DONE
_______ BEFORE YOU LIFT THE AIRPLANE ON JACKS. IF IT IS NOT, AN OVERLOAD CAN OCCUR AND CAUSE DAMAGE TO THE JACKS OR LANDING GEAR.
 (e)  
Align the brake rod (9) with the brake torque arm.

 (f)  
Install the brake rod bolt (8) in the rod and brake housing.

 1)  Install the bolt (8) with the bolt head on the side of the torque arm that is nearest to the truck beam.
 NOTE: The bolt head must point in, with relation to the
____
 truck beam.

 2)  Install the washer (12) on the bolt (8) with the tang of
 the washer in the slot of the bolt. 3) Tighten the nut (11) to 120 - 600 pound-inches. 4) Loosen the nut (11), if it is necessary, to align the
 nearest castellation and install a cotter pin (10).
 (g)  Connect the applicable electrical connector at the panel below the landing gear truck beam.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-42-20
 ALL  ú ú 01 Page 409 ú Oct 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 CONNECTORS__________
 Wheel No. 1 DT1575  Left Wing Gear TruckWheel No. 2 Wheel No. 3 DT1576 DT1577  Wheel No. 4DT1578
 Wheel No. 5 DT1579  Left Body Gear TruckWheel No. 6 Wheel No. 7 DT1580 DT1581  Wheel No. 8DT1582
 Wheel No. 9 DT1583  Right Body Gear TruckWheel No. 10 Wheel No. 11 DT1584 DT1585  Wheel No. 12DT1586
 Wheel No. 13 DT1587  Right Wing Gear TruckWheel No. 14 Wheel No. 15 DT1588 DT1589  Wheel No. 16DT1590
 (3)  S 864-022Remove the DO-NOT-CLOSE tag(s) and close these circuit breakers if open: (a) P180 DC Power Distribution Panel 1) 180J9 TORQUE LIMIT 1, 5, 9, 13 2) 180F9 TORQUE LIMIT 2, 6, 10, 14 3) 180J24 TORQUE LIMIT 3, 7, 11, 15 4) 180F24 TORQUE LIMIT 4, 8, 12, 16
 (4)  S 744-020Do the Brake System BITE Test procedure in the "Ground Tests - Brake Control System" task (AMM 32-42-00/501).
 (5)  S 714-021Do the Torque Sensor Zero Function procedure in the "Ground Tests -Brake Control System" task (AMM 32-42-00/501).
 (6)  S 094-018Do this task: "Removal of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 起落架 LANDING GEAR 7(100)