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Engineering/Technical Ask technical questions about cars. Do you know how a car engine works? |
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#1 | |
AF Enthusiast
Join Date: Jul 2006
Location: Otago
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Wiper rest position.
What exactly sets the resting position of a wiper motor?
Or to rephrase the question: If a wiper motor has decided that 1/4 of the way up the windscreen is a good place to stop, how can it be taught otherwise? |
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#2 | |
Master Connector
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Re: Wiper rest position.
Selling the Nissan and buying a Honda usually fixes it.
I know on the old designs (and I'm talking lucus from the 70s) they used a little switch in the motor housing on the crank. Chances are things have moved on now, and there is bound to be a microchip involved somewhere, especially if you have the variable speed intermittent mode popular now days.
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#3 | ||
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Re: Wiper rest position.
Quote:
![]() Though I did have to rebush a wiper pivot in one of them the other week. Bit of a hazard living in a place that gets over 3m of rain a year. It's japanese and dating from 1985, intermittent but one fixed speed. Guess I'll just have to rip in and see what's there. |
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#4 | |
SHO No Mo
![]() Join Date: Jun 2004
Location: Cedar Rapids, Iowa
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Re: Wiper rest position.
I've seen on a fair number of GM cars where the wiper arms slipped knurls on the motor shaft, likely after someone tried to use the wipers in place of ice scrapers. It appears ice affixing a wiper to smooth glass has a higher tensile strength than the wiper motor shaft has sheer strength.
-Rod |
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#5 | ||
AF Enthusiast
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Re: Wiper rest position.
Quote:
On this one the wiper range of motion remains correct so all the shafts and linkages are right where they should be. Just the "off" position has changed, it moves about 1/4 of it's arc up from the bottom of the swing before stopping. |
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