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John Deere Tractors Discussion Forum
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Clutch on JD B

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Joe McGinnis

08-05-2003 17:40:04




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Want to rebuild the clutch and try as I might I cannot get the "drive disc" out. Any ideas or suggestions would be appreciated. The serial # is above 201 000. Thanks and God Bless ---JM




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Ellis Brasher

08-05-2003 18:18:52




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 Re: Clutch on JD B in reply to Joe McGinnis, 08-05-2003 17:40:04  
Joe, it seems I recall using the B tractor drawbar that had a couple of holes at the correct spacing and I never used anything but correct length cap screws with washers as needed. I strongly recommend a repair manual from TRACTOR SUPPLY.



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Ellis Brasher

08-05-2003 18:08:55




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 Re: Clutch on JD B in reply to Joe McGinnis, 08-05-2003 17:40:04  
Hi Joe and I wonder if you know that you must rig up a puller and use the two 1/2" threaded holes in the drive disc hub. Once you get good pressure on it you can hit it with a 2-3# hammer and it will usually come off. Be sure to line up the timing marks when you put it back. You may know that the inner bearing is one of the weaker points of this set-up in that there is no provision for regular lube on this roller bearing and on my 520 it runs directly on the crank. On mine I installed a thin steel plate on the outside adjusting plate and on the thin steel plate I installed a 5/8" I.D. sealed roller bearing in conjunction with the 5/8" bolt that holds the drive disc on.

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Joe M

08-06-2003 18:54:10




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 Re: Re: Clutch on JD B in reply to Ellis Brasher, 08-05-2003 18:08:55  
I rigged a puller for the drive disc. Applied equal tension to each side. Was just getting ready to use the big hammer and the darned thing fell out and just missed my foot. Thanks again to all of you and God Bless--JM



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RayP(MI)

08-05-2003 18:06:28




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 Re: Clutch on JD B in reply to Joe McGinnis, 08-05-2003 17:40:04  
Been there, done that! Almost destroyed the clutch! DO NOT try to use a conventional gear puller! (Even though the bolt in the center has a cone shaped hole in it. I assume you have the cover off, the three castellated nuts off the clutch bolts, and the bolt and washer off the middle of the clutch assy. This threads directly into the crankshaft. Find a suitable socket from your socket wrench set. Place it in the splined hole against the end of the crank. Find a heavy piece of steel plate. Drill two holes in it to match the spacing of the two threaded 1/2" holes in the clutch drive disk. Thread two pieces of threaded rods into these holes, through the plate and put nuts on the outside. What you have just created is a special purpose puller. Tightening the nuts will put pressure against the plate, and the socket, pushing against the crank. Also pulling the "drive disk" outward. (Be sure threaded rods are fully threaded in.) I tapped each nut a few strokes with an impact wrench, and the disk practically popped out. I had darn near broke the conventional gear puller, and did break a chip out of the plate before I tried this improvised puller. I&T manual isnt' much help on this. Also look back in the archives on this, I had a couple posts a couple weeks back when I went thru this. Some good suggestions were tended. No fun!

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gutpile

08-05-2003 18:06:00




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 Re: Clutch on JD B in reply to Joe McGinnis, 08-05-2003 17:40:04  
you have to make a puller to get the drive disc out, i made mine out of a piece of angle iron 8 inches long, drill 3 holes in it, one at each end, that will align with the threaded holes in the drive disc an find bolts to fit the threads, drill another hole in the center of your angle iron and weld a nut to the bottem side, thread a bolt into that nut and against the end of the crank, (i placed a couple of large flat washers against the end of the crank so i wouldnt damage the end of the crank) tighten the center bolt against the crank then tighten the outer bolts into the drive disc with even turns and the drive disc will slide right off...hope this helps.

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