(c)
11K24, ELEC PUMP C2
S 865-138
(2) Open these circuit breakers on the P6 panel and attach DO-NOT-CLOSE tags:
(a)
6C1, FUEL COND CONT L
(b)
6C2, FUEL COND CONT R
S 865-139
(3)
Put the L HYD PUMPS ELEC switch, on the hydraulic control panel, in the ON position.
S 865-140
(4)
Make sure the ACMP in the left hydraulic system, in the left main wheel well, starts after 4 seconds.
S 215-141
(5)
Make sure the PRESS light for the left ACMP, on the hydraulic control panel, goes off in less than 2 seconds after the pump starts.
S 215-142
(6)
Make sure the SYS PRESS light for the left hydraulic system, on the hydraulic control panel, is off.
(7)
Make sure these EICAS messages do not show on the EICAS display:
S 215-143
NOTE: The EICAS computer will not show new EICAS messages until
____ three minutes after you open these circuit breakers on the P6 panel:
6C1, FUEL COND CONT L
6C2, FUEL COND CONT R
(a) L HYD SYS PRESS
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL
(b) L HYD ELEC PUMP.
(8) S 215-144Make sure the EICAS message, L HYD ENG PUMP, shows on the EICAS display.
(9) S 215-145Make sure the L HYD PRESS indication, on the EICAS display, is 2850 to 3150 psi.
S 735-146
(10) Do these steps to do a test of the time delay for the left ACMP indication:
(a)
Put the L HYD PUMPS ELEC switch, on the hydraulic control panel, in the OFF position.
(b)
Remove electrical power (AMM 24-22-00/201).
(c)
Install a jumper between the pins A and B on the time delay module, M10557, for the left ACMP indication, on the miscellaneous electrical power panel, P33.
(d)
Supply electrical power (AMM 24-22-00/201).
(e)
Put the L HYD PUMPS ELEC switch, on the hydraulic control panel, in the ON position.
(f)
When the pressure becomes stable, put the L HYD PUMPS ELEC switch, on the hydraulic control panel, in the OFF position and do these steps: 1) Make a record of the time until the PRESS light for the
left ACMP, on the hydraulic control panel, comes on. 2) Make sure the ACMP in the left hydraulic system, in the left wheel well, stops in less than one second. 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 液压 CHAPTER 29 - HYDRAULIC POWER 1(73)
