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Clutch wear, how to fix?

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Pete

11-28-2000 06:50:46




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How is the wear in the holes that the pins for the over-center dogs fit into, dealt with? The holes are so close to the rim of the clutch, I don't see a way to drill them. How did they machine these to begin with? The clutch is on a 1934 "D".




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clooney

11-28-2000 07:11:06




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 Re: clutch wear, how to fix? in reply to Pete, 11-28-2000 06:50:46  
Pete, that is a good question. About the only thing you can do is find a right angle drill with a VERY small head on it & a short drill bit(like an old dentist drill). I have put bigger pins in only one D & it took a long time as I custom built the pins to fit each hole & even then they were only tight in one direction (I took a rat tail file & heated & bent it to work at the holes some but in the end just made the pins fit as tight as possible). On that clutch, it was done years ago & it still works good to this day. I don't know how they were built but it must have been some machine.

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Pete

11-30-2000 06:57:25




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 Re: Re: clutch wear, how to fix? in reply to clooney, 11-28-2000 07:11:06  
Thanks for all the sugestions. I think anything with an angle drive small enough to work in there would be fairly marginal for ability to do any serious work. Right now, my plan is to load up the holes with body putty, and just before it sets up, get those pins in there to "size" the holes. Since the pivoting action is with the over-center dogs, there shouldn't be as much wear on the holes of the clutch. What do you think? JBWeld as metal particles, so I feel it would be less of a choice than say, Bondo? Has anyone else tried anything like this with any success?

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clooney

11-30-2000 14:13:03




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 Re: Re: Re: clutch wear, how to fix? in reply to Pete, 11-30-2000 06:57:25  
Pete, Loc-Tite has a product called "Quick metal" that is made to do what you are trying to do. I have used it for keyway repair, bearing fit etc. it works good but probably won't hold up forever. There is more wear in that pin area than people think or they wouldn't all wear like they do.



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Pete

11-30-2000 15:21:32




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 Re: Re: Re: Re: clutch wear, how to fix? in reply to clooney, 11-30-2000 14:13:03  
This is my first John Deere clutch "restoration", how much play can a person get away with in those pin holes? Since the veteran is somewhat retired... I'd like to think it would last for a bit. Does the wear happen more when the clutch is engaged or disengaged? I'm also entertaining the idea of drilling and tapping holes, so a small set screw could be tightened up, and taking out the play in the holes, along with the "plastic weld". Will the clutch arm work right if there's slop in those holes? I'd like to hear how others have solved this problem.

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clooney

12-02-2000 05:28:42




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 Re: Re: Re: Re: Re: clutch wear, how to fix? in reply to Pete, 11-30-2000 15:21:32  
Pete, be very careful working around those pin bosses on the pulley as they break off very easy. I don't know about putting set screws in as that will weaken the top of the bosses & put a lot of load in only one area. The clutch will work with play in dog pins, the smaller the ammount of slop the crisper it will work. Putting the biggest pin in that will fit the existing holes is probably your best bet.

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dave g

11-28-2000 15:02:02




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 Re: Re: clutch wear, how to fix? in reply to clooney, 11-28-2000 07:11:06  
I think they make right angle die grinders, or something of the sort that might fit in, but it's just a guess.....check at a store that sells air tools....maybe there's a dremel tool attachment that'll do it (I don't know, but they make 150 some odd of them)....



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clooney

11-28-2000 16:41:44




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 Re: Re: Re: clutch wear, how to fix? in reply to dave g, 11-28-2000 15:02:02  
Dave, the die grinder would have to have a very, very small head on it. I have never seen a die grinder with a head that small on it but I am sure for the right ammount of money they are available. I have a super small right angle air drill (very small gear box on it) & it wouldn't fit in the D pulley even without the chuck on it. (I was going to weld a short drill bit to a nut & use it to drill the holes on the D pulley). you might be on to something on that dremel if they make a right angle attachment.

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