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747-400 MAINTENANCE MANUAL
 (b)  Put the drag brake (1) in its position and install the bolts (2), washers (6), and nuts (5).
 S 434-015
 (2)  
Connect the flap torque tube to the brake:

 (a)  
Move the spline coupling sleeve on and off of the torque tube spline.

 (b)  
If the sleeve moves freely, install the retaining screws. 1) Install a lockwire between the screws.

 (c)  
If the sleeve does not move freely, adjust the airseal. 1) Loosen the airseal fasteners. 2) Move the airseal until the spline coupling sleeve moves

 freely on the torque tube spline.
 NOTE: If it is necessary, remove the sealant above the
____ airseal to permit the airseal to move up.
 3) Tighten the airseal fasteners to 40-50 pound-inches (5-6 N-m). 4) If you removed the sealant above the airseal, apply sealant to the joint. 5) Install the retaining screws to connect the spline coupling sleeve to the torque tube. 6) Install a lockwire between the screws.
 S 094-016
 (3)  Remove the flap locks from the flap carriages (Fig. 401).
 S 094-017
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK 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 AND DAMAGE TO EQUIPMENT.
 (4)  Do this task: "Removal of the Door Locks from the Body Landing Gear" (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 864-018
 (5)  Do this task to pressurize hydraulic system No. 1: "Hydraulic System Pressurization" (AMM 29-11-00/201).
 S 864-022
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
 (6)  
Remove the DO-NOT-MOVE tag and put the flap control lever in the UP detent to retract the inboard flaps.

 S 864-020

 (7)  
Do this task to depressurize hydraulic system No. 1: "Hydraulic System Depressurization" (AMM 29-11-00/201).

 S 724-050

 (8)  
Test the inboard TE flap drive no-coast brake operation (AMM 27-51-00/501).

 TASK 27-51-42-404-037
 5. No-Coast Drag Brake Installation (Alternate Procedure)
______________________________________________________
 A. Parts
 ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ |402 | 1 |Brake Assy-Drive Sys No Coast Drag | 27-51-60 | 01 | 737 | | | 2 |Bolt | | | 728 | | | 3 |Strap - Safety | | | 716 | | | 4 |Support | | | 740 | | | 5 |Nut | | | 734 | | | 6 |Washer | | | 731 | | | 7 |Screw | 27-51-20 | 01 | 10 | 2......…........…...................................…..........….....….........1
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747-400
MAINTENANCE MANUAL

 B. References
 (1)  
AMM 27-51-00/501, Trailing Edge Flap System

 (2)  
AMM 27-51-20/401, Torque Tube

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AMM 32-00-30/201, Manual Control

 C.
Access

 (1)  
Location Zone
 137 Body Landing Gear Well, LH

 D.
Procedure

 S 424-038
　
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