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 ALL  ú ú 01 Page 203 ú May 28/99

A

757
MAINTENANCE MANUAL

 S 862-016
 (14)
 Remove the DO-NOT-OPERATE tag from the APU master control switch on the P5 panel.

 S 862-017

 (15)
 Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:

 (a)
6H23, L FWD FUEL BOOST PUMP

 S 862-018
 (16)
 Remove electrical power (AMM 24-22-00/201).

 S 712-019

 (17)
 Operate the APU (AMM 49-11-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-25-00
 ALL  ú ú 01 Page 204 ú May 28/99

A

757 MAINTENANCE MANUAL
 APU FUEL FEED SYSTEM - ADJUSTMENT TEST
______________________________________
 1.  General_______
 A.  This procedure gives an operational test for the APU fuel feed system and a leakage test for the APU fuel line shroud and drain tubing.
 TASK 28-25-00-715-001
 2.  Operational Test - APU Fuel Feed System________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Electric Power - Control

 (2)  
AMM 32-00-15/201, Landing Gear Door Locks

 (3)  
AMM 32-00-20/201, Landing Gear Downlocks

 B.  
Access

 (1)  
Location Zones
 133 Wing center section (Left)

 C.  
Prepare for Test

 S 865-002
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-003

 (2)  
Put the APU FIRE switch on the pilots aft control stand, P8, to the NORMAL position.

 S 865-004

 (3)  
Put the APU master control switch on the overhead panel, P5, to the OFF position (View A, Fig. 501).

 S 865-005

 (4)  
Open these circuit breakers on the power distribution panel, P6, and attach DO-NOT-CLOSE tags:

 (a)  
6E3, FUEL VALVES APU

 (b)  
6G1, FIRE EXT APU

 S 865-006
 (5)  
Open this circuit breaker on the overhead circuit breaker panel, P11, and attach a DO-NOT-CLOSE tag:

 (a)  
　
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本文鏈接地址：757 AMM 飛機維護手冊 燃油 CHAPTER 28 - FUEL 4(17)