(2)  
Access Panels
 531CB Center Tank Access Door (Left)
 631CB Center Tank Access Door (Right)

 C.  
Procedure

 (1)  
Defuel the applicable fuel tanks (AMM 28-26-00/201).

 (2)
Drain and purge the applicable fuel tank (AMM 28-11-00/201).

 S 014-034

 (3)  
Remove the center tank access door, 531CB or 631CB
 (AMM 28-11-02/401).

 S 654-002
 S 654-003
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-13-01
 ALL  ú ú 01 Page 401 ú May 28/99

A
757 MAINTENANCE MANUAL
FLOAT-ACTUATED VENT VALVE
SEE A
FUEL VENT FLOAT VALVE
SEE C
1. SCREW
2. WASHER FLOAT-ACTUATED VENT VALVE
3. FLOAT-ACTUATED SEE A
VENT VALVE
4. GASKET SEAL FUEL VENT FLOAT VALVE
SEE  C  TUBING FLANGE 
FLOAT  2. WASHER 
5. NUT 
TUBING FLANGE 
VALVE FLAPPER  (4 LOCATIONS) 
1. SCREW  B 
3. FLOAT-ACTUATED 
VENT VALVE 
TUBING FLANGE 
SEE  B 

5. NUT
VENT STRINGERVENT TUBE 6. BOLT
7. WASHERFLOAT-ACTUATED VENT VALVE
8. NUT
(4 LOCATIONS)
A
FLOAT
10. FUEL VENT FLOAT VALVE
9. O-RING
FUEL VENT FLOAT VALVE
C
Float Valve - Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-13-01
 ALL  ú ú 01 Page 402 ú May 28/99

A
757 MAINTENANCE MANUAL
 S 944-010
 WARNING: OBEY THE FUEL TANK ENTRY PRECAUTIONS (AMM 28-11-00/201).
_______ FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
Obey the fuel tank entry precautions (AMM 28-11-00/201).

 S 014-004

 (5)  
Go into the fuel tank and find the float-actuated vent valve (3).

 S 034-005

 (6)
Remove the screws (1), washers (2), and nuts (5) from the float-actuated vent valve (3) and the tubing flange.

 S 024-006

 (7)  
Remove the float-actuated vent valve (3).

 S 034-007

 (8)  
Remove the gasket seal (4).

 S 494-008

 (9)  
　
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 燃油 CHAPTER 28 - FUEL 2(24)