(8)  
Make sure the DEFUEL LH OPEN light comes on.

 S 215-013
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-26-00
 ALL  ú ú 01 Page 504 ú May 28/99

A

757
MAINTENANCE MANUAL

 S 215-021
 (9)  Make sure the manual override handle on the left defueling valve actuator moves to the OPEN position (View A).
 NOTE: Access to the left defueling valve actuator is through the
____
 left shock strut door for the main landing gear.

 S 865-014
 (10)
 Put the LH DEFUEL switch on the P28 panel to the CLOSED position.

 S 215-015

 (11)
 Make sure the LH DEFUEL OPEN light goes off (View B).

 S 215-016

 (12)
 Make sure the manual override handle on the left defueling valve actuator moves to the CLOSED position (View A).

 S 415-017

 (13)
 Close the fueling station door, 621GB (AMM 06-44-00/201).

 S 865-022
 WARNING: MAKE SURE NO PERSONS ARE IN THE SLAT AREA WHEN YOU DO THE
_______ ACTIVATION PROCEDURE FOR THE LEADING EDGE SLATS. IF PERSONS ARE IN THE SLAT AREA WHEN YOU DO THE ACTIVATION PROCEDURE, INJURY COULD OCCUR.
 (14)
 Do the activation procedure for the leading edge slat (AMM 27-81-00/201).

 (15)
 Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 865-018
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-26-00
 ALL  ú ú 01 Page 505 ú May 28/99

A

757 MAINTENANCE MANUAL
 DEFUELING VALVE - REMOVAL/INSTALLATION
______________________________________
 1.  General_______
 A.  A defueling valve is found on the rear spar in the center fuel tank. The defueling valve is inboard of each end rib in the center fuel tank. The defueling valve contains three parts: the adapter shaft, the valve body and the actuator. The adapter shaft connects the valve body to the actuator. The actuator is found out of the fuel tank on the rear spar.
 B.  This procedure contains five tasks. The first task removes the adapter shaft of the defueling valve. The second task installs the adapter shaft of the defueling valve. The third task aligns the adapter shaft. The fourth task removes the valve body of the defueling valve. The fifth task installs the valve body of the defueling valve.
　
中國航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機(jī)維護(hù)手冊(cè) 燃油 CHAPTER 28 - FUEL 4(76)