H.
Put the Airplane Back to Its Usual Condition
S 434-092
(1) Install the wing leading edge cover.
S 414-093
CAUTION: MAKE SURE ALL TOOLS, AND UNWANTED MATERIALS, ARE REMOVED FROM
_______ THE STRUT CAVITIES BEFORE YOU INSTALL THE STRUT ACCESS DOORS. THE STRUT DRAINS CAN BE BLOCKED WITH UNWANTED MATERIALS WHICH CAN CAUSE DAMAGE TO THE STRUT AREA.
(2)
Do this Task: Replace the Access Door (AMM 54-62-00/201).
S 864-094
(3)
FOR THE APPLICABLE ENGINE; Remove the DO-NOT CLOSE tags and close these circuit breakers:
(a)
On the main power distribution panel, P6:
1) 6F01 IGN 1 ENG 1
2) 6G19 STBY IGN ENG 1
3) 6K19 IGN 2 ENG 1
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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 864-095
(4)
FOR THE APPLICABLE ENGINE; Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
On the main power distribution panel, P6:
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 864-096
(5) Supply the electrical power if it is necessary (AMM 24-22-00/201).
S 094-097
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).
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747-400
MAINTENANCE MANUAL
I. Do a Dry Engine Motoring Test to Check for Fuel Line Leaks in the Strut Area
S 654-098
(1)
Refuel the fuel tanks with the necessary fuel quantity to do the engine motoring procedure (AMM 71-00-00/201).
S 714-099
(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.
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747-400 MAINTENANCE MANUAL
ENGINE FUEL FEED SYSTEM FUEL LINE - INSPECTION/CHECK
____________________________________________________
1. General_______
A. This procedure contains these four tasks:
(1)
Fuel Tube Dent Criteria and Coupling Damage and Wear Limits
(2)
Engine Fuel-Feed Manifold Air Pressure Leak Check
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