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 1.  General_______
 A.  The engine fuel crossfeed valve(s) has (have) an actuator installed out of the fuel tank. The adapter shaft(s) and valve body(s) are installed in the fuel tank.
 B.  The engine fuel crossfeed valve actuator(s) is (are) installed on the rear spar of the center fuel tank. It is not necessary to defuel the center fuel tank to remove the actuator(s) (AMM 28-22-12/401). It is necessary to defuel the center fuel tank to remove the adapter shaft(s). It is necessary to defuel all the fuel tanks to remove the valve bodies.
 C.  This procedure removes and installs one engine fuel crossfeed valve, the other engine fuel crossfeed valve removal/installation is the same (if installed). This procedure contains six tasks. The first task removes the adapter shaft. The second task installs the adapter shaft. The third task aligns the adapter shaft. The fourth task removes the valve body. The fifth task installs the valve body. The sixth task does a test of the engine fuel crossfeed valve(s).
 D.  The procedure to remove and install the engine fuel crossfeed valve actuator(s) is in AMM 28-22-12/401.
 TASK 28-22-02-004-040
 2.  Remove the Engine Fuel Crossfeed Valve Adapter Shaft (Fig. 401, 401A)____________________________________________________
 A.  References
 (1)  
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels

 (2)  
AMM 28-11-00/201, Fuel Tanks

 (3)  
AMM 28-11-02/401, Center Tank Access Door

 (4)  
AMM 28-22-12/401, Engine Crossfeed Valve Actuator

 (5)  
AMM 28-26-00/201, Defueling

 B.  
Access

 (1)  
Location Zone
 134 Wing Center Section (Right)

 (2)  
Access Panels
 134AZ Center Tank Access Door
 134BZ Baffle Door
 134CZ Baffle Door
 134DZ Baffle Door

 C.  
Procedure

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

 (2)  
Remove the engine fuel crossfeed valve actuator (AMM 28-22-12/401).

 (3)
Remove the center tank access door, 134AZ (AMM 28-11-02/401).

 S 654-045
 S 034-002
 S 014-003
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 28-22-02
 ALL  ú ú 01 Page 401 ú Jan 28/01

A

757
MAINTENANCE MANUAL

ADAPTER PLATE
1. O-RING
ACTUATOR
MANUAL
10. SUPPORT OVERRIDE
　
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本文鏈接地址：757 AMM 飛機(jī)維護(hù)手冊(cè) 燃油 CHAPTER 28 - FUEL 3(29)