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valves
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Posted by Dan W [Email] (more from Dan W) on Mon, 2 Jul 2001 21:06:25 Share Post by Email
In Reply to: Re: Windshield washer tubing parts??, bazil burns, Mon, 2 Jul 2001 18:49:24
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the "disc" located at the elbow of each fitting is a one-way diaphragm valve that prevents backflow. The idea is, when you hit the wiper/washer lever the fluid is 90% of the way to the nozzle already. Without the valve, the fluid tends to drain back and therefore needs to be pumped all the way back the length of the tubing - takes longer. No biggie, just convenience :o) However, I've heard it said that the extra time of wipers running across dry glass leads to more scratching, but who knows.

Part is ~$4 each at the dealer - after years of looking for a cheap replacement, I just gave in and bought 'em (they had a whole bin full of them!)

'85 900S 181k

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