[AT] JD 620 clutch cover keeps working loose

[Dean Vinson]

Oh, well that would explain it…  so much for my natural mechanical intuition.   :)

 

Thanks!

 

Dean Vinson

Saint Paris, OH

 

From: AT [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Brian VanDragt
Sent: Wednesday, April 22, 2020 8:34 PM
To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
Subject: Re: [AT] JD 620 clutch cover keeps working loose

 

The flat spots on the cover are clearance for the adjusting nuts. The flat springs should snap over the curled edge.

Brian

 

-------- Original message --------

From: Dean Vinson <dean at vinsonfarm.net <mailto:dean at vinsonfarm.net> > 

Date: 4/22/20 8:25 PM (GMT-05:00) 

To: 'Antique Tractor Email Discussion Group' <at at lists.antique-tractor.com <mailto:at at lists.antique-tractor.com> > 

Subject: [AT] JD 620 clutch cover keeps working loose 

 

Hello, all.  Any pro tips on how to keep the clutch cover in place on a 620?

 

It's just a press-fit situation.   The cover has a lip around the edge, mostly curled over but with three "flat spots" 120 degrees apart.   They align with three spring clips attached to the inside of the pulley.   Everything looks good and uniformly shaped and not beat up or broken or weak.   But two or three times over the past couple years I've had to carefully reinstall it, tapping gradually with a rubber mallet to get it to seat fully all the way around.  Looks fine for a while but then it always slowly works loose again.

 

I had the tractor out this evening for some rear-blade work on a little lane I'm trying to fix up, and it worked and sounded and looked great as usual... but you can see that missing clutch cover.  

 

Dean Vinson

Saint Paris, Ohio

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