757 AMM 飞机维护手册 燃油 CHAPTER 28 - FUEL 4(29)

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 B.  This procedure contains two tasks. The first task removes the APU fuel shutoff valve. The second task installs the APU fuel shutoff valve.
 TASK 28-25-02-004-001
 2.  Remove the APU Fuel Shutoff Valve (Fig. 401)_________________________________
 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 28-25-05/401, APU Fuel Line and Shroud

 (5)  
AMM 28-25-11/401, APU Fuel Shutoff Valve Actuator

 (6)  
AMM 28-26-00/201, Defueling

 B.  
Access

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

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

 C.  
Procedure

 S 034-002
 (1)  Remove the actuator of the APU fuel shutoff valve (2) (AMM 28-25-11/401).
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APU FUEL SHUTOFF VALVE
SEE A 2. ACTUATOR OF THE APU FUEL SHUTOFF VALVE
REAR SPAR
REAR SPAR
(WET SIDE) (DRY SIDE)

TO THE APU
2
3. SCREW
9. O-RING (4 LOCATIONS)4. WASHER(IN THE FLEXIBLE (4 LOCATIONS)
FULL COUPLING)
(2 LOCATIONS)

1. FLANGE
1
5. SEAL
6. FLEXIBLE 8. VALVE BODY FULL COUPLING (2 LOCATIONS)
7. APU FUEL LINE
FWD
TO THE APU DC FUEL PUMP
APU FUEL SHUTOFF VALVE
1
PREFERRED A
2

ALTERNATE
2. ACTUATOR OF THE APU FUEL SHUTOFF VALVE
APU Fuel Shutoff Valve Installation
Figure 401

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 (2)  S 654-005Defuel all the fuel tanks (AMM 28-26-00/201).
 (3)  S 654-006Drain and purge the fuel tanks (AMM 28-11-00/201).
 (4)  S 014-003Remove the center tank access door, 134AZ (AMM 28-11-02/401).
　
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