(a)  
Make sure the flowbar goes off.

 (b)  
Make sure the VALVE light comes on and then goes off.

 (7)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 864-039
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
757 MAINTENANCE MANUAL
 TASK 28-22-02-714-096
 8.  GUN 011-099, 105-999; Test of the Forward and Aft Engine Fuel Crossfeed Valves Operation__________________________________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Electrical Power Control

 B.  
Access

 (1)  
Location Zones
 211 Control Cabin - Section 41 (Left)
 212 Control Cabin - Section 41 (Right)

 C.  
Procedure

 S 864-056
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 864-057

 (2)  
Close these circuit breakers:

 (a)  
Overhead circuit breaker panel, P11:
 1) 11A19, FWD FUEL CROSSFEED
 2) 11A20, AFT FUEL CROSSFEED
 3) 11D36, FUEL XFEED IND

 S 864-058
 (3)  
Push the FWD and AFT CROSSFEED VALVE switch-lights, on the overhead panel, P5, to the open position.

 S 214-059

 (4)  
Make sure the FWD and AFT flowbars come on.

 S 214-060

 (5)
Make sure the FWD and AFT VALVE lights come on and then go off.

 S 214-061

 (6)  
Do a check on each manual override handle position to make sure the forward and aft engine fuel crossfeed valves are open.

 NOTE: Access to the forward and aft engine fuel crossfeed valve
____ actuators is in the right and left wheel wells repectively.
 The forward engine fuel crossfeed valve is found approximately 4 inches to the right of the middle of the body on the center tank rear spar. The aft engine fuel crossfeed valve is installed approximately 12 inches to the left of the middle of the body on the rear spar.
 S 864-062
 (7)  Push the FWD and AFT FUEL CROSSFEED VALVE switch-lights on the P5 panel to the closed positions.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-22-02
　
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