S 865-055
(5)
Remove the engine shutdown inhibit in the EICAS computers
(AMM 31-41-00/201).
S 215-056
(6)
Make sure the C SYS PRESS, C ELEC 1 PRESS and C ELEC 2 PRESS lights on the hydraulic control panel are on.
(7)
Make sure the C HYD SYS PRESS message is shown on EICAS.
S 215-057
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-31-00
ALL ú ú 01 Page 506 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 015-058
(8) Make sure the C HYD ELEC 1 and C HYD ELEC 2 messages are not shown on EICAS.
NOTE: The C HYD SYS PRESS message stops the display of the C HYD
____
ELEC 1 and C HYD ELEC 2 messages on EICAS.
S 015-059
(9)
Open the access panel 197KL for the central hydraulic service center (AMM 06-41-00/201).
S 495-060
(10)
Connect the hydraulic service cart to the ground power connections for the center hydraulic system (AMM 29-11-00/201).
S 865-061
(11)
Slowly pressurize the center hydraulic system with the service cart.
S 215-062
(12)
Make sure the C SYS PRESS light on the hydraulic control panel goes off at a pressure between 1300 and 1800 psi.
NOTE: The C ELEC 1 PRESS and C ELEC 2 PRESS warning lights will
____ stay on during this test. They stay on because the center system electric pumps are not in operation.
S 215-063
(13)
Make sure the C HYD SYS PRESS message is not shown on EICAS.
S 215-064
(14)
Make sure the C HYD ELEC 1 and C HYD ELEC 2 messages are shown on EICAS.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-31-00
ALL ú ú 01 Page 507 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 215-065
(15)
Make sure the hydraulic pressure indication is the same as the service cart pressure (+/- 150 psi).
S 865-066
(16)
Slowly decrease the pressure in the center hydraulic system to 1200 psi.
S 215-067
(17)
Make sure the C SYS PRESS light on the hydraulic control panel is on.
S 215-068
(18)
Make sure the C HYD SYS PRESS message is shown on EICAS.
S 215-069
(19)
Make sure the C HYD ELEC 1 and C HYD ELEC 2 messages are not shown on EICAS.
S 865-070
(20)
Increase the pressure in the center hydraulic system to 3000 psi.
S 865-071
(21)
Push the ELEC/HYD and then the AUTO-EVENT READ switches on the EICAS maintenance panel on the P61 panel. Push and hold the ERASE switch for approximately three seconds.
S 215-072
(22)
Make sure the C HYD SYS MAINT message is not shown on EICAS.
(23)
Decrease the pressure in the center hydraulic system to 2750 psi.
S 215-074
(24)
Make sure the C HYD SYS MAINT message is shown on EICAS after approximately 60 seconds.
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 2(157)
