(d)  
After you repair the leak, do the applicable leak test again.

 S 362-321
 (4)  If you do not collect the correct amount of water and cannot find leaks, do these steps:
 (a)  
Do the task to clear the applicable strut drain.

 (b)  
If you cannot remove the blockage with air, use a thin wire to clear the applicable drain tube.

 (c)  
Continue to remove the blockage in the tube and do the leak test until you collect the correct amount of water.

 S 162-322
 (5)  Make sure there are no unwanted materials on the upper spar surfaces, upper spar drain inlets, closure spar surfaces, and the closure spar drain inlet.
 G.  If you will not do more leak checks at this time, put the airplane back to its usual condition.
 S 162-323
 CAUTION:_______MAKE SURE YOU KEEP THE STRUT AREA CLEAN. TOOLS, LOOSE AND UNWANTED MATERIALS IN THE STRUT COMPARTMENTS CAN BLOCK THE REMOVAL OF THE FLUIDS THROUGH THE STRUT DRAINS. IF YOU DO NOT REMOVE THE UNWANTED MATERIALS, YOU CAN CAUSE DAMAGE TO THE STRUT.
 (1)  
Make sure you remove all unwanted materials from the strut cavities.

 (2)  
Install the strut No. 3 forward fairing.

 S 412-325
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 54-53-00
 ALL  ú ú 01N Page 254 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 412-326
 (3)  Install access panel 462AL/472AL on the left side of the strut at NSTA 164 (AMM 54-62-00/201).
 S 442-327
 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.
 (4)  Do this task: "Safety Locks Removal and Extended Leading Edge Flaps Activation" (AMM 27-81-00/201).
 S 412-329
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
 (5)
Close the left and right thrust reversers (AMM 78-31-00/201).

 S 412-371

 (6)
Close the left and right core cowl panels (AMM 71-11-06/201).

 S 412-330

 (7)
Close the left and right fan cowl panels (AMM 71-11-04/201).

 S 442-372

 (8)  
Do the activation procedure for the thrust reverser
 (AMM 78-31-00/201).

 TASK 54-53-00-702-231
 12. Inboard Strut, Upper Spar Inlet - Leak Check (S3)
_________________________________________________
 A. General
 (1)  This task gives instuctions on how to do a leak check (S3) of the upper spar inlet structure on the inboard strut.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 54-53-00
 ALL  ú ú 01N Page 255 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 B. Equipment
 (1)  
Water source - low pressure, can spray up to 2 quarts (1.9 liters) per minute

 (2)  
Container - 5 gallon (19 liter) capacity, can collect and measure water to within 1 fluid ounce (30 ml) (measure can be done in smaller containers)

 (3)  
Funnel - long necked

 C. References
 (1)  
AMM 08-00-00/201, Leveling and Weighing

 (2)  
AMM 27-81-00/201, Leading Edge Flaps

 (3)  
AMM 51-31-01/201, Seals and Sealing

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

 (5)  
AMM 71-11-04/201, Fan Cowl Panels

 (6)  
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 NACELLES/PYLONS(77)