(10) If you extended the leading edge flaps, do these safety procedures to retract them:
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO
_______ REMOVE THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT REMOVE THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(a) Remove the safety locks from the leading edge flaps (AMM 27-81-00/201).
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747-400
MAINTENANCE MANUAL
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.
(b)
Retract the leading edge flaps (AMM 27-81-00/201). S 865-038
(11)
Remove the electrical power, if it is not necessary for other tasks (AMM 24-22-00/201).
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747-400 MAINTENANCE MANUAL
PRESSURE FUELING SYSTEM - INSPECTION/CHECK
__________________________________________
1. General
_______
A. This procedure contains instructions to do a check of the refuel receptacle adapter.
B. If there is fuel leakage or damage at the refuel receptacle adapter, it must be replaced.
TASK 28-21-00-756-001
2. Refuel Receptacle Adapter Check (Fig. 601)
_______________________________
A. Parts
(1)
Wear Gauge, part number 61657-7 (recommended), JC Carter Company, Inc., 671 W. 17th Street, Costa Mesa, California 92627
B.
References
(1)
AIPC 28-21-01, Fig. 50
(2)
AMM 28-21-14/401, Fueling Receptacle Adapter
C.
Access
(1)
Location Zones
521 Leading Edge to Front Spar, Left
621 Leading Edge to Front Spar, Right
(2)
Access Panels
521BB Fueling Receptacle Access Door
621BB Receptacle Access Door
D.
Procedure
S 016-002
(1)
Open the applicable pressure refuel station access door, 521BB or 621BB.
(2)
Remove the refuel receptacle cap(s).
(3)
Make sure the flange of the adapter is in these limits:
S 016-003
S 756-004
NOTE: Use of the wear gauge is recommended to measure these limits
____
(View C).
(a) The thickness of the three lugs of the flange is more than
0.224 inch (View D).
(b) The width of the three lugs of the flange is more than 0.425 inch (View D).
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