wiper drive arm removal - Defender Source
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  #1  
Old November 18th, 2010, 01:20 PM
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wiper drive arm removal

is there a trick to it? My wipers aren't lined up correctly, and i need to take one off and reposition it. I would assume you would typically just lift up the drive arm until it locks into position and pull, but it doesnt seem to come off and i don't want to break anything.
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  #2  
Old November 18th, 2010, 01:42 PM
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There is a set screw. Pretty sure it is an allen head.
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  #3  
Old November 18th, 2010, 01:51 PM
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Thanks ron. Im pretty sure you can remove them without removing the set screw, as the set screw actually holds the splined piece in place and the drive arm slides over it. I've had them off before, but i didn't have a windscreen at the time so i just knocked them out with a rubber mallet. with the windscreen on it seems pretty difficult
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  #4  
Old November 18th, 2010, 01:55 PM
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Tony Lawson
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the set screw is on the drum adapter (d-shaped shaft on the ID and a spline on the OD). The set screw usually strips, BTW. The spline interfaces with the wiper arm. This spline allows more fine adjustment of the arm angle when parked, etc. There is a little tab that has to be depressd to get the arm off of the drum adapter...but the splines are usually half rusted together. A little penetrating oil can help. Rocking motion. Then the cursing will begin....

the Rovers North catalog page shows the drum adapter, FWIW
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  #5  
Old November 18th, 2010, 01:59 PM
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Thanks Tony. Ill figure out how to push down the tab and get them to come off. While the splines arent rusted, im staying away from the allen bolt as im pretty sure i tried to drill out the rusted bolt a few years ago and it still wouldn't come off. As i don't have a grinder, im just glad its all rusted together so i don't have to grind off and replace Just need to straighten these damned things
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Old November 18th, 2010, 02:00 PM
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Tony Lawson
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BTW - it's sometimes easier to see the little tab from inside the cab looking at the back of the wiper arm where it goes on the drum adapter. I said 'depressed' but I can't actually remember if it needs to be pushed toward the shaft or pried away from it.

I ended up getting new drum adapters - and had to drill out the set screws to get the old ons off. Basically, the set screw got worn where it pushed on the shaft flat, but I couldn't tighten it because it had frozen and the socket stripped. So if your wipers home position is changing (rotational slop), that could be the issue.
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Old November 18th, 2010, 02:02 PM
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Ill keep that in mind. Thanks again, Tony
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  #8  
Old November 18th, 2010, 04:56 PM
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Charles Galpin
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I think you pry the tab away from the splined part. But I find if you lift the wiper arm and take the spring tension off it (perhaps even pushing back inward slightly at the point of the arm pivot as you pull on the other side), it should pull right out with a little pressure.
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  #9  
Old November 18th, 2010, 05:26 PM
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Eric Williamson
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A long time bodge for worn splines is a dab of Loctite. Could be why you are having difficulty.
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