(7)  
Push up on the poppet of the APU sump drain valve.

 (8)  
Make sure the poppet opens.

 S 864-023
 S 214-024
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757
MAINTENANCE MANUAL

 S 864-025
 (9)
Release the poppet.

 S 214-026

 (10)
 Make sure the poppet closes.

 S 094-027
 WARNING:_______OBEY THE REMOVAL PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (11) Remove the door locks from the landing gear doors and close the doors (AMM 32-00-15/201).
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757 MAINTENANCE MANUAL
 APU FUEL SHUTOFF VALVE ACTUATOR - REMOVAL/INSTALLATION
______________________________________________________
 1.  General
_______
 A.  The actuator of the APU fuel shutoff valve is installed on the rear spar of the center fuel tank. The actuator is found approximately two feet to the left of the body centerline. It is not necessary to defuel the fuel tank to remove the actuator of the APU fuel shutoff valve.
 B.  This procedure contains two tasks. The first task removes the actuator of the APU fuel shutoff valve. The second task installs the actuator of the APU fuel shutoff valve.
 TASK 28-25-11-004-002
 2.  Remove the Actuator of the APU Fuel Shutoff Valve (Fig. 401)
_________________________________________________
 A.  References
 (1)  
AMM 32-00-15/201, Landing Gear Door Locks

 (2)  
AMM 32-00-20/201, Landing Gear Downlocks

 B.  
Access

 (1)  
Location Zones
 133 Wing Center Section (Left)
 134 Wing Center Section (Right)

 C.  
Procedure

 S 864-003
 (1)  
Open this circuit breaker on the main power distribution panel, P6, and attach a DO-NOT-CLOSE tag:

 (a)  
6E3, FUEL VALVES APU

 S 214-004
 (2)  Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
　
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本文鏈接地址：757 AMM 飛機維護手冊 燃油 CHAPTER 28 - FUEL 4(56)