S 714-032
 (4)  
Set the applicable boost pump switch on the fuel management control module on the P5 pilots' overhead panel to ON.

 (5)  
Make sure the applicable boost pump operates.

 S 214-050

 (6)  
Make sure the applicable PRESS light on the boost pump switch goes off.

 S 714-049
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 S 714-033
 (7)  
Set the boost pump switch to OFF.

 S 714-051

 (8)  
Make sure the applicable boost pump stops.

 S 214-052

 (9)  
Make sure the applicable PRESS light on the boost pump switch comes on.

 C.
Put the Airplane Back to Its Usual Condition

 S 414-034
 (1)  Install the boost pump access doors, if removed.
 S 094-035
 WARNING:_______DO THE PROCEDURE IN AMM 27-81-00/201 TO REMOVE THE LOCKS. THE FLAPS MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Remove the leading edge flap safety locks, if installed
 (AMM 27-81-00/201).

 S 864-040
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING
_______ EDGE AND TRAILING EDGE 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.
 (3) Retract the leading edge flaps, if extended (AMM 27-81-00/201).
 S 094-037
 WARNING: DO THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE LOCKS.
_______ DOORS. MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
Remove the wing and body gear door locks (AMM 32-00-30/201).

 (5)
Remove electrical power, if it is not necessary (AMM 24-22-00/201).

 S 864-038
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A
747-400 MAINTENANCE MANUAL
 FUEL FLOW LIMITING VALVE - REMOVAL/INSTALLATION
_______________________________________________
 1.  General
_______
 A.  This procedure contains instructions to remove and install the fuel flow limiting valve. The fuel flow limiting valve is referred to as the valve body in this procedure.
 B.  The valve body is installed on the rear spar in the center wing tank (right side).
 C.  Access to the valve body is through the center wing tank access door and the spanwise beam access doors.
 TASK 28-22-04-024-002
 2.  Fuel Flow Limiting Valve Removal (Fig. 401)
________________________________
 A.  References
 (1)
AMM 28-11-00/201, Fuel Tanks

 (2)
AMM 28-11-09/401, Spanwise Beam Access Door

 (3)
AMM 28-26-00/201, Defueling

 (4)
AIPC 28-22-53 Fig. 1

 B.  
Access

 (1)  
Location Zones
 131 Center Section Wing Box, Left
 132 Center Section Wing Box, Right

 (2)  
Access Panels
 131AZ Spanwise Beam Access Door
 131BZ Spanwise Beam Access Door
 132AZ Spanwise Beam Access Door
 132BZ Spanwise Beam Access Door

 C.  
Procedure

 (1)
Defuel the center wing fuel tank (AMM 28-26-00/201).

 (2)
Purge and go into the center wing fuel tank (AMM 28-11-00/201).

 S 654-001
 S 014-003
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 ALL  ú ú 01 Page 401 ú Jun 18/99
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