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28-25-00
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) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 燃油 CHAPTER 28 - FUEL 4(17)
