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JD B Clutch Always Engaged

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Bob Esker

04-16-2002 07:07:07




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I posted this issue before but I didn't have time to take any action, so I beg everyone's patience going through it again.
I rebuilt the clutch after finding the clutch drive disc splines rounded out. I got a replacement drive disc with good splines & a new rivot along with installing new toggles, springs, discs etc. I tighten the nut to the drive disc until I can get a cotter pin in. At that point, the drive disc is tight against the inner disc plate causing the clutch to be engaged. It appears the drive disc is traveling to far onto the crankshaft. The spline on the crankshaft after flat point where the drive disc spline rivot aligns is chipped and may be the cause by allowing the drive disc to travel to far onto the crankshaft. Any suggestions on repair? shim/weld? Thanks a bunch in advance to all.

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Clooney

04-16-2002 14:55:48




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 Re: JD B Clutch Always Engaged in reply to Bob Esker, 04-16-2002 07:07:07  
Bob, how far does the drive disk go on the crank? (how far out past the flat end of the crankshaft is it after tightening the nut then removing the nut to look).
~If it there is a 3/16"+ overhang from the crank end I would suspect the pulley gear is working it's way off the pulley snout. Can you push the pulley on until it contacts the dust shield, if not look for something holding the pulley out.
~Is there a chance the fork isn't in the groove & is holding the collar & pulley out ? ~It wouldn't hurt to pull the fork & bearing assembly & look in behind the pulley to see if it is hitting the R/H main bearing assembly or for other reasons it is not moving to the left enough.
~If that part doesn't seem too bad it could be the L/H main bearing thrust surface is getting worn & allowing the crank to move to the left & pulling the drive disk in with it ( does the crank stick through the flywheel very far?)

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Deere Puller

04-16-2002 09:42:22




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 Re: JD B Clutch Always Engaged in reply to Bob Esker, 04-16-2002 07:07:07  
The crank is worn such that, just as you mentioned, the disk is bottoming out and causing a engaged condition. Your best bet is to either try a taper-fit drive disc (Dengler's? ad in Gr$$n Magazine) or replace the crank with one that is not worn. You can try to weld up/grind down, but unless you're a very skilled operator, the results will be less than desirable. Since there are so many "B" cranks available, perhaps this is a good route if you already have a new 'non-taper' drive disk.

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Bob Esker

04-16-2002 10:39:06




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 Re: Re: JD B Clutch Always Engaged in reply to Deere Puller, 04-16-2002 09:42:22  
Can you provide more information about Dengler's? I'm not familiar with the name or Gr$$n Magazine.
Thanks



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Deere Puller

04-16-2002 12:45:06




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 Re: Re: Re: JD B Clutch Always Engaged in reply to Bob Esker, 04-16-2002 10:39:06  
They are a parts outlet that carries several aftermarket Deere items (Some of which are fairly pricey). Here is a link - Link It gives phone numbers, etc.



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