C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Headlight motors keep running

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Old Sep 27, 2010 | 11:16 AM
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Default Headlight motors keep running

I haven't cycled my headlights for a few years and one opened halfway and then was "loose" and flopping around. I noticed that both motors keep running a while after they are closed or opened. Does this mean the Derlin gear is stripped?
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Old Sep 27, 2010 | 12:35 PM
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That's a typical symptom, yes. Check this link for replacement info.

http://www.corvettefever.com/howto/33098/index.html
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Old Sep 27, 2010 | 12:38 PM
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Most likely you just need to replace the factory "goo" that dried up and failed. Repair can be as simple are installed a set of bushings to replace the goo.

Make your own or order these (3 bushings per headlamp motor):

http://www.ecklers.com/corvette-head...1988-1996.html

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Old Sep 27, 2010 | 12:55 PM
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My driver side would open up but it kept running for a while till it stopped itself. Passenger side was fine. I decided not to go with the bushing fix and go with the replacement of the gear and bushing. I also replaced the other side. The driver side was dust and the passenger side was ok but the stuff they put there had already elongated in shape.

http://www.ecklers.com/corvette-head...Product_Upsell
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Old Sep 27, 2010 | 03:31 PM
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Thanks. I ordered new gears and bushings
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Old Sep 27, 2010 | 03:46 PM
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Originally Posted by 89vette
Thanks. I ordered new gears and bushings
The bushings will require some filing down to get it right. DON'T be tempted to file a huge bunch off. File a little off, insert it into the bronze gear and put the top piece on and make sure it fits. 2nd and 3rd one, do the same.
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