30-44-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
WASHER SEE A
ON
L-WINDSHIELD-R
PILOT'S OVERHEAD PANEL
SEE C
A SEE B
ASSEMBLY NOZZLE (SINGLE HOLE) WASHER JET
SCREWS ADJUSTMENT VALVE SOLENOID LEFT
THREADS RETAINING NOZZLE 0-RINGS
PLATE
AIRPLANE SKIN VALVE RIGHT SOLENOID
WASHER FLUID FITTING NOZZLE CHECK VALVE PUMP DRIP TRAY WASHER CONTAINER FLUID
B C
Figure 1 Windshield Washer System Component Location
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30-44-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
DRAIN
WASHER FLUID RIGHT
LINE
CONTAINER SOLENOID VALVE
FLUID FLOW SCHEMATIC
M7321 ANTI-ICE-RAIN REMOVAL MODULE (P5)
VALVE (RIGHT)
ELECTRICAL SCHEMATIC
Windshield Washer System Schematics Figure 2
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ú 01 Page 3
ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL
(1) Washer fluid is applied to either No. 1 window by pressing the left or right WASHER switch on the anti-ice-rain removal module M7321 on the P5 pilots' overhead panel. This switches 115-volt 3-phase power to the pump motor. At the same time, 28 volts dc is applied to the solenoid valve for the selected window. The pump pumps the washer fluid out of the container, through the solenoid valve, to the spray nozzle. The liquid is applied to the selected window through the upper hole in the spray nozzle. The windshield wiper must be used with the windshield washer system to thoroughly clean the required area.
B. Control
CAUTION: DO NOT OPERATE WINDSHIELD WIPERS ON A DRY WINDSHIELD AS
_______
WINDSHIELD MAY BE DAMAGED.
(1) To operate the windshield washer, push the left or right WASHER switch on the anti-ice-rain removal module (P5 panel) to the ON position. Hold the switch for approximately 2 seconds. This applies about 20cc of washer fluid on the windshield. Set the WIPER switch to LO and press the WASHER switch for 2 more seconds. Allow the windshield wiper to operate until wiped area is nearly dry. Repeat this procedure as required until windshield is clean.
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30-44-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WINDSHIELD WASHER SYSTEM - ADJUSTMENT/TEST
__________________________________________
1. General_______
A. This task is an operational test of the windshield washer system. In this procedure, you will make sure that the left and right windshield washers give a spray of fluid correctly onto the windshield.
B. The left and right windshield washer systems operate independently from the same source of washer fluid. You can do a test of each system separately or together.
C. When you do this test, the outside ambient air temperature must be 38° to 120° F.
TASK 30-44-00-715-001
2. Operational Test - Windshield Washer System___________________________________________
A. References
(1)
AMM 12-16-01/301, Windshield Washer System
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 30-43-00/201, Windshield Rain Repellent System
(4)
SSM 30-42-01
(5)
WDM 30-44-11
B. Access
(1) Location Zone
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航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 防冰和排雨 ICE AND RAIN PROTECTION(72)
