(10)
Make sure the EICAS message, L HYD ENG PUMP, does not show on the EICAS display.
S 215-244
(11)
Make sure the EICAS message, L HYD ELEC PUMP, shows on the EICAS display.
S 865-245
(12)
Open this circuit breaker on the P11 panel and attach a DO-NOT-CLOSE tag:
(a) 11D28, HYDRAULICS ENG PUMP SOV L or HYDRAULICS ENG PUMP SUPPLY LEFT
S 865-246
(13) Open these circuit breakers on the P6 panel and attach a DO-NOT-CLOSE tag:
(a)
6E1, FUEL VALVES L SPAR
(b)
6C1, FUEL COND CONT L
S 865-247
(14) Push the button behind the fire switch handle for the left engine, on the P8 panel, to release the fire switch handle.
S 865-248
CAUTION: AFTER YOU PULL THE FIRE SWITCH HANDLE, DO NOT TURN THE FIRE
_______ SWITCH HANDLE. THIS WILL RELEASE THE CONTENTS OF THE FIRE EXTINGUISHER BOTTLES WHICH ARE PRESSURIZED.
(15) Pull the fire switch handle for the left engine, on the P8 panel, to the emergency fire position.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL
S 215-249
(16) Make sure the L HYD PRESS indication, on the EICAS display, is less than 2500 psi after 60 seconds.
S 865-250
CAUTION: AFTER YOU PULL THE FIRE SWITCH HANDLE, DO NOT TURN THE FIRE
_______ SWITCH HANDLE. THIS WILL RELEASE THE CONTENTS OF THE FIRE EXTINGUISHER BOTTLES WHICH ARE PRESSURIZED.
(17)
Push the fire switch handle for the left engine, on the P8 panel, to the usual position.
S 215-251
(18)
Make sure the L HYD PRESS indication, on the EICAS display, is 2850 to 3150 psi.
S 865-252
(19)
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P11 panel:
(a) 11D28, HYDRAULICS ENG PUMP SOV L or
HYDRAULICS ENG PUMP SUPPLY LEFT
S 865-253
(20)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6 panel:
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本文鏈接地址：757 AMM 飛機維護手冊 液壓 CHAPTER 29 - HYDRAULIC POWER 1(84)
