757 AMM 飞机维护手册 燃油 CHAPTER 28 - FUEL 4(77)

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 C.  The procedure to remove and install the defueling valve actuator is in AMM 28-26-02/401.
 TASK 28-26-01-004-029
 2.  Remove the Adapter Shaft of the Defueling Valve (Fig. 401)_______________________________________________
 A.  References
 (1)
AMM 28-11-00/201, Fuel Tanks

 (2)
AMM 28-11-02/401, Center Tank Access Door

 (3)
AMM 28-26-00/201, Defueling

 (4)
AMM 28-26-02/401, Defueling Valve Actuator

 B.  
Access

 (1)  
Location Zones
 531 Center Wing Tank (Left)
 631 Center Wing Tank (Right)

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

 C.  
Procedure

 (1)
Defuel the center fuel tank (AMM 28-26-00/201).

 S 654-030
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MAINTENANCE MANUAL

13. INDEX 4. INDEX PLATE SCREW 3. ADAPTER PLATE 2. SUPPORT BRACKET 
1. ADAPTER SHAFT 
ASEE DEFUELING VALVE  ACTUATOR VALVE 5. DEFUELING 
10. VALVE BODY  REAR SPAR 
6. WASHER 7. ADAPTER BOLT 8. VALVE BOLT 9. WASHER  12. O-RING 
13. INDEX 2. SUPPORT BRACKET 3. ADAPTER PLATE 4. INDEX PLATE SCREW  DEFUELING VALVE A 2 
1. ADAPTER SHAFT  5. DEFUELING ACTUATOR VALVE 
12. O-RING 
6. WASHER 
10. VALVE BODY  BOLT 7. ADAPTER 8. VALVE BOLT 9. WASHER  REAR SPAR 
2 1  ALTERNATE PREFERRED  DEFUELING VALVE A 1 
Defueling Valve Installation Figure 401 

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MAINTENANCE MANUAL

ALIGNMENT 
REAR  TOOL 
SPAR  SEE  B 
DEFUELING 
VALVE 
SEE  A 
ADAPTER 
PLATE 
INDEX 
PLATE 
BOTTOM 
INDEX 
ALIGN  SCREW 
SCREW 
(2 LOCATIONS) 
SCALE 
FWD 
DEFUELING VALVE 
LOCKSCREW 
A 
　
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