S 865-073
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29-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 865-084
(25)
Increase the pressure in the center hydraulic system to 3000 psi.
S 865-075
(26)
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 215-076
(27)
Make sure the C HYD SYS MAINT message is not shown on EICAS.
S 865-077
(28)
Put back the engine shutdown inhibit in the EICAS computers (AMM 31-41-00/201).
S 865-078
(29)
Decrease the pressure in the center hydraulic system to zero.
S 095-079
(30)
Disconnect the hydraulic service cart from the ground power connections for the center system (AMM 29-11-00/201).
S 415-080
(31)
Close the access panel 197KL for the central hydraulic service center (AMM 06-41-00/201).
S 865-081
(32)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-082
(33)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11K15, ELEC PUMP C1
(b)
11K24, ELEC PUMP C2
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-31-00
ALL ú ú 01 Page 509 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
HYDRAULIC PRESSURE TRANSMITTER - REMOVAL/INSTALLATION
_____________________________________________________
1. General
_______
A. This procedure contains two tasks, one to remove and one to install the hydraulic pressure transmitters.
B. The pressure transmitter in each hydraulic system (left, right, and center) is equivalent.
TASK 29-31-01-024-001
2. Remove the Pressure Transmitter
_______________________________
A. References
(1)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(2)
AMM 32-00-15/201, Landing Gear Door Locks
B. Access
(1)
Location Zones
211/212 Control Cabin
143/144 MLG Wheel Well
(2)
Access Panels
731/741 Main Landing Gear
C. Prepare for the Removal
S 494-002
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO INSTALL THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Open the doors for the landing gear and install the door locks for access to the pressure transmitters (AMM 32-00-15/201).
S 864-003
(2)
Remove the pressure from the hydraulic system and reservoir that contains the pressure transmitter that you will remove (AMM 29-11-00/201).
S 864-004 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(158)
