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 28-22-07
 ALL  ú ú 01B Page 430 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 4) 6F02 IGN 1 ENG 2
 5) 6G20 STBY IGN ENG 2
 6) 6K20 IGN 2 ENG 2
 7) 6F03 IGN 1 ENG 3
 8) 6G21 STBY IGN ENG 3
 9) 6K21 IGN 2 ENG 3
 10) 6F04 IGN 1 ENG 4
 11) 6G22 STBY IGN ENG 4
 12) 6K22 IGN 2 ENG 4

 S 864-059
 (4)  
FOR THE APPLICABLE ENGINE; Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6 Main Power Distribution Panel
 1) 6G01 FUEL SHUTOFF VALVE ENG 1
 2) 6L10 FUEL CONT VALVE ENG 1
 3) 6G02 FUEL SHUTOFF VALVE ENG 2
 4) 6L11 FUEL CONT VALVE ENG 2
 5) 6G03 FUEL SHUTOFF VALVE ENG 3
 6) 6L12 FUEL CONT VALVE ENG 3
 7) 6G04 FUEL SHUTOFF VALVE ENG 4
 8) 6L13 FUEL CONT VALVE ENG 4

 S 864-060
 (5)  Supply the electrical power if it is necessary (AMM 24-22-00/201).
 S 094-061
 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. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCK. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT DO THE STEPS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (6)  Do this task: Leading Edge Flap Retraction (AMM 27-81-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-22-07
 ALL  ú ú 01B Page 431 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 I.  Do a Dry Engine Motoring Test to Check for Fuel Line Leaks in the Strut Area
 S 654-062
 (1)  
Refuel the fuel tanks with the necessary fuel quantity to do the engine motoring procedure (AMM 71-00-00/201).

 S 714-063

 (2)
Do this task: No. 2 - Engine Motoring (AMM 71-00-00/501).

 NOTE: The dry engine motoring test puts the fuel condition
____ lever in the run position (with the applicable FUEL CONT VALVE ENG circuit breaker in the open position). This will pressurize the fuel line to the engine fuel pump.
 TASK 28-22-07-404-064
 6.  Fuel Line in the Engine Strut - Coupling O-Ring Removal_______________________________________________________
 A.  General
 (1)  
This task is for digital task card requirements.

 (2)  
This task removes the coupling O-rings and retaining rings from the fuel line in the engine strut area.

 (3)  
This task can be done with or without fuel in the fuel tanks. If there is fuel in the fuel tanks, the engine spar valve must be closed and the fuel drained from the fuel line.

 B.  
Equipment

 (1)  
Container - 5 gallon (20 liter) capacity, suitable for the collection of fuel.

 C.  
Consumable Materials

 (1)  
D00128 Petrolatum, VV-P-236

 D.  
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 28-22-07/601, Engine Fuel Feed lines and Couplings

 (3)  
AMM 27-81-00/201, Leading Edge Flaps

 (4)  
AMM 54-62-00/201, Nacelle Strut Access Panels (Opening and Closing)

 (5)  
AMM 71-00-02/401, Power Plant - Removal/Installation

 (6)  
AMM 71-11-06/201, Core Cowl Panels

 (7)  
AMM 78-31-00/201, Thrust Reverser System

 (8)  
AIPC 28-22-07 FIG. 1

 (9)  
AIPC 28-22-07 FIG. 2

 (10)
 AIPC 28-22-07 FIG. 15

 (11)
 AIPC 28-22-07 FIG. 16

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
　
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