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Help from mechanical experts

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TexasWren

06-29-2006 19:52:59




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I'm a bit stumped. I'm trying to replace a bearing in a clutch shaft on a Case 830. There's an inside snap-ring which has nothing that any kind of snap-ring pliers can grab. It doesn't even have the kind of notch in the end that such a bearing retainer snap-ring normally has to let you pry it out with a screwdriver -- just a couple of bevelled ends. I've been working on this all night, and I can only barely get one end lifted slightly out, a long long way from popping it out. Can anybody suggest a way to get this out, or did Case do this deliberately to force you to destroy and replace the retaining ring?

Thanks,
Victor

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4435

06-30-2006 06:17:35




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 Re: Help from mechanical experts in reply to TexasWren, 06-29-2006 19:52:59  
Can you get to the lip that retains the snap ring? Use a cape chisel and cut a notch opposite of your gap so you can get under the back edge of the snap ring. IH did this on some of there combine bearings and it was frustrating until we learned this trick. HTH Tom



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texaswren

06-30-2006 15:55:55




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 Re: Help from mechanical experts in reply to 4435, 06-30-2006 06:17:35  
As appealing as chipping chunks of my bearing carrier out sounds, I thought there had to be a better way.

What I did is I ground the end of a piece of flat stock into the shape of a trapezoid, so that it would just barely fit between the beveled ends of the snap ring. By twisting the bar, I levered one end of the snap ring out of its groove JUST enough to slip a thin screwdriver behind it and pop it out. It was a breeze, relatively speaking. Since my homemade tool was mild steel, it got destroyed, but it lasted long enough to do the job. So now I've got the clutch shaft assembly rebuilt. Oh, how I love the feel of new bearings.

My tractor is finally starting to go back together! Just in time. The weeds are getting downright uppity.

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boston bean potty

07-03-2006 15:29:05




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 Re: Help from mechanical experts in reply to texaswren, 06-30-2006 15:55:55  
trapazoid????? ????? ????? ?????



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rongrong

06-29-2006 21:37:43




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 Re: Help from mechanical experts in reply to TexasWren, 06-29-2006 19:52:59  
you need a special snap ring plier its jaws are flat with a depression in to hook the ends of the snap ring..you can try to make one by using a needle nose pliers and grinding the sides of the tips flat until they fit snugly in the ends of the snap ring and then pull the handles apart and spread the ring this is a one shot deal, and its better to get the right tool..



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TexasWren

06-30-2006 05:11:20




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 Re: Help from mechanical experts in reply to rongrong, 06-29-2006 21:37:43  
I may be a bit dim, but how does spreading help remove an inside snap ring? That would just force it into the groove. Seems that pulling the ends together would be preferable. Alas, there's nothing on the ends to grab, and it's quite a strong ring. I've seen rings like this, and they have a little step in the end of the ring for getting a screwdriver behind, but Case was not so kind.

I have a variety of snap ring pliers, a good selection of ordinary pliers, screwdrivers, probes, and other gizmos, and about 40 years experience dismantling things. I had no trouble splitting my tractor, but this one ring is driving me nuts.

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