(2)
If the hydraulic system pressure decreases below 1,200 psi, the SYS FAULT light will go on. It will also cause a caution message to come into view. HYD PRESS SYS 1,2,3, or 4 will be shown on the auxiliary EICAS display.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-31-00
ALL ú ú 01 Page 1 ú Oct 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
HYDRAULIC TUBE
SEE B PRESSURE TRANSMITTER
HYDRAULIC TUBE
SEE A
SEE B
SYSTEM 1 AND SYSTEM 4 INSTALLATION
A
PRESSURE TRANSMITTER
HYDRAULIC TUBE
SYSTEM 2 AND SYSTEM 3 INSTALLATION B
Pressure Transmitter Location Figure 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-31-00
ALL ú ú 01 Page 2 ú Dec 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
P5 OVERHEAD PANEL
SEE A
SEE B
SYSTEM FAULT LIGHT
SYS FAULT SYS FAULT HYD SYS FAULT FAULT SYS OFF EDP OFF EDP OFF EDP OFF EDP
PRESS PRESS PUMPS PRESS PRESS OFF DEM AUX DEM OFF DEM DEMOFF AUX
OFF AUTO ON AUTO OFF ON AUTO OFF ON AUTO OFF ON SOV SOV SOV SOV
RSVR DEMAND
PRESS
AUX AUX 12 34
0.75 0.75 QTY 0.10RF 1.35
ON ON ON ON
3250 3250 PRESS 0 3250
ENGINE
50 50 TEMP 10 50 1 234
PRESS PRESS PRESS PRESS
HYDRAULIC CONTROL MODULE
EICAS HYD PAGE
A
(AUXILIARY EICAS DISPLAY) B
Hydraulic Pressure Indication Figure 2
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-31-00
ALL ú ú 02 Page 3 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Hydraulic Pressure Indicating System Simplified Schematic
Figure 3
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-31-00
ALL ú ú 02 Page 4 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
HYDRAULIC PRESSURE INDICATION SYSTEM - ADJUSTMENT/TEST
______________________________________________________
1. General_______
A. This procedure has two tasks. The first task is an operational test of the low pressure lights for the hydraulic demand pumps. The second task is a system test of the indicating system for the hydraulic pressure.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:747-400 AMM 飞机维护手册 液压 HYDRAULIC 2(107)