(f)  
Install the nut. 1) Tighten the nut to 10-15 pound-inches (1.1-1.7 N-m).

 (g)  
Reconnect the torque tubes to the flap power package.

 (h)  
If you removed the Inboard PDU Alt Motor, install it
 (AMM 27-51-17/401).

 (i)  
Install the protective cover (nut). 1) Tighten the nut to 250-500 pound-inches (28-56 N-m).

 (j)  
Install the cotter pin.

 S 718-007
 (3)  Do the flap power package adjustment (AMM 27-51-09/501).
 S 098-008
 WARNING:  CAREFULLY DO THE SPECIFIED TASK 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)  Remove the door locks from the doors for the body landing gear (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-09
 ALL  ú ú 01 Page 805 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 FLAP CONTROL MODULE - MAINTENANCE PRACTICES
___________________________________________
 1.  General_______
 A.  There are 11 tasks in this procedure. There are tasks for the removal and the installation of the flap control module components. The components include the flap control module, bypass valve, bypass valve motor, check valve and the priority valve flow control cartridge. There is also a task for the operational test of the priority valve.
 B.  The flap control module on each flap power package is installed in the body gear wheel well. The control module gets and controls the hydraulic fluid flow to the hydraulic motor. The control module includes a check valve, a control valve and a motor-operated bypass valve. The bypass valve can be replaced with the fittings connected. The check valve can be removed only after the hydraulic return lines are disconnected. You must remove the flap control module before you remove the control valve.
 TASK 27-51-10-002-001
 2.  Flap Control Module Removal___________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (3)  
AMM 32-00-30/201, Landing Gear Door Locks

 (4)  
AIPC 27-51-09, Fig. 1 and 3

 B.  
Access

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

 C.  
Prepare for the Removal

 (1)
Make sure that the landing gear ground locks are installed.

 S 862-002
 S 492-003
 WARNING: CAREFULLY DO THE SPECIFIED TASK TO INSTALL THE DOOR LOCKS ON
_______ THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  Install the door locks on the doors for the body landing gear (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-10
 ALL  ú ú 01 Page 201 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-004
 (3)  
Release the pressure in hydraulic systems No. 1 and No. 4
 (AMM 29-11-00/201).

 S 862-005

 (4)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6, Main Power Distribution Panel
 1) 6L20, TE FLAP ELEC CONT INBD
 2) 6L19, TE FLAP ELEC CONT OTBD

 D.
Remove the Flap Control Module

 S 032-077
 (1)
Disconnect the electrical connectors (3) from the bypass valve.

 (a)  
DV138 (Inboard Flap By-Pass Valve)

 (b)  
DV139 (Outboard Flap By-Pass Valve)

 S 032-078
 (2)  
Remove the bonding jumper (2) from the bypass valve and the flap lever and quadrant assembly.

 S 032-079

 (3)  
　
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