S 834-185

 (9)
Remove the DO-NOT-CLOSE tag and close these circuit breakers:

 (a)  
On the main power distribution panel, P6: 1) 6E3, APU FUEL VALVE 2) 6H23, L FWD FUEL BOOST PUMP

 (b)  
On the overhead circuit breaker panel, P11: 1) 11C33, APU DC PUMP

 TASK 28-25-05-004-020
 6.  Remove the APU Fuel Line and Shroud Between the Center Fuel Tank and the________________________________________________________________________ APU Firewall____________
 A.  References
 (1)  
AMM 06-42-00/201, Empennage Access Doors and Panels

 (2)  
AMM 53-01-01/401, Floor Panels

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A

757
MAINTENANCE MANUAL

 B.  Equipment
 (1)  
Container - for use with fuel, commercialy available.

 C.  
Access

 (1)  
Location Zones 241 Passenger Cabin - Section 44 (Left) 242 Passenger Cabin - Section 44 (Right) 251 Passenger Cabin - Section 46 (Left) 252 Passenger Cabin - Section 46 (Right) 311 Area Aft of Pressure Bulkhead to BS 1787.45 (Left) 312 Area Aft of Pressure Bulkhead to BS 1787.45 (Right) 313 Stabilizer Center Section Compartment (Left) 314 Stabilizer Center Section Compartment (Right)

 (2)  
Access Panel
 311AL Access Door (Left)

 D.  
Remove the APU Fuel Line and Shroud between the Center Fuel Tank and the APU Firewall

 S 864-173
 (1)  
Make sure the APU fuel shutoff valve is closed.

 S 864-174

 (2)  
Make sure the APU master control switch on the overhead panel, P5, is in the OFF position and attach a DO-NOT-OPERATE tag.

 S 084-175

 (3)  
Remove the electrical power from the airplane.

 S 864-176

 (4)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
On the main power distribution panel, P6:
 1) 6E3, APU FUEL VALVE
 2) 6H23, L FWD FUEL BOOST PUMP

 (b)  
On the overhead circuit breaker panel, P11:
 1) 11C33, APU DC PUMP.

 S 014-021
 (5)  
To remove the APU fuel line and shroud between the center fuel tank and the aft pressure bulkhead, remove the applicable floor panel (AMM 53-01-01/401).

 S 014-022

 (6)  
To remove the APU fuel line and shroud between the aft pressure bulkhead and the APU firewall, open the access door 311AL (AMM 06-42-00/201).
　
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