C. Preconditions
S 865-007
(1) These conditions are necessary for this task:
(a)
Electrical power on (AMM 24-22-00/201).
(b)
Windshield wiper system is serviceable (AMM 30-42-00/501).
D. Procedure
S 865-002
(1)
Supply electrical power (AMM 24-22-00/201).
S 615-003
(2)
Look at the level of the windshield washer fluid in the windshield washer bottle.
(a) If the bottle is less than half full, fill the bottle (AMM 12-16-01/301).
S 715-004
(3) Do a test of the washer operation:
(a)
Push the applicable WASHER switch on the anti-ice/rain removal module (P5 panel) to ON.
(b)
Continue to operate the washer until there are no air bubbles in the fluid which comes out of the nozzle.
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MAINTENANCE MANUAL
(c)
Make sure that the washer fluid hits the left windshield 18 to 20 inches from the nozzle and 14 to 16 inches from the wiper blade trip stud (Fig. 501). 1) If the stream of fluid does not hit the correct area,
adjust the nozzle (AMM 30-43-00/201).
(d)
Make sure that the windshield washer system applies fluid continuously while you push the WASHER switch for 3 seconds.
(e)
Turn the applicable WIPER switch to LO.
(f)
Make sure that the fluid hits on the two sides of the wiper as the wiper scans.
(g)
Let the wiper operate until the windshield is almost dry.
S 865-005
(4) Remove electrical power (AMM 24-22-00/201).
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MAINTENANCE MANUAL
WINDSHIELD
(LEFT SIDE SHOWN, RIGHT SIDE OPPOSITE)
Washer Fluid Spray Pattern
Figure 501
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WINDSHIELD WASHER SOLENOID VALVE AND PUMP - REMOVAL/INSTALLATION
________________________________________________________________
1. General_______
A. There are four tasks in this subject. The first two tasks are the removal and the installation of the windshield washer system solenoid valve. In this procedure, you will get access to the valve, remove the valve, install a replacement, and make sure the valve operates. The procedure is the same for the left or the right valve.
B. The second two tasks are the removal and the installation of the windshield washer pump. In this procedure, you will get access to the pump, remove the pump, install the replacement pump, and make sure that the pump operates.
TASK 30-44-01-004-001
2. Windshield Washer Solenoid Removal (Fig. 401)__________________________________
A. References
(1)
AIPC 30-44-01, Fig. 1
(2)
SSM 30-42-01
(3)
SWPM 20-30-12
(4)
WDM 30-44-11
B. Access
(1) Location Zone 221 Control Cabin, LH - Windshield Washer Access Door
C. Procedure
S 864-045
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6, Main Power Distribution Panel
1) 6B32, WINDSHIELD WASH PUMP
(b)
P7, Overhead Circuit Breaker Panel
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本文链接地址：747-400 AMM 飞机维护手册 防冰和排雨 ICE AND RAIN PROTECTION(73)
