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John Deere Tractors Discussion Forum

1958 John Deere 720 Rollamatic

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Beanie

03-08-2006 16:14:21

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I have a John Deere 720 with rollamatic front end. The wheel on the front of my tractor on the flywheel side sets in at the top about an inch further than the one on the pulley side. What would I have to look for to solve this problem? I have identical 1274 rims that are straight and not bent. The spindle is not bent either. So, what would I look for?

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Mike M

03-09-2006 06:58:46

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Re: 1958 John Deere 720 Rollamatic in reply to Beanie, 03-08-2006 16:14:21

I would say you are looking at a bent or twisted rolomatic arm and/or the bushings could be gone or even the post for the bushings bent or broken.

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F-I-T

03-08-2006 20:26:23

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Re: 1958 John Deere 720 Rollamatic in reply to Beanie, 03-08-2006 16:14:21

Does it actually sit off of the ground by an inch? The thing about a Roll-A-Matic is that it is an equalizing action, so if one wheel goes up a 6" rise, the other wheel is forced down 3", so you have the up wheel really rising 3" and the down wheel lowering 3" for a total of 6". If you have one wheel actually sitting 1" high, I would jack the front end up and lift up and then push down one wheel and see if the other follows in the opposite direction for full travel stop to stop. You could have a broken tooth stuck in a tooth node that is not allowing the R-O-M to relax.

Pardon my primitive attempt at a sketch.

Frank

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Carl NY

03-08-2006 19:05:09

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Re: 1958 John Deere 720 Rollamatic in reply to Beanie, 03-08-2006 16:14:21

If you are sure the rims are identical and the spindles are OK, the next thing to measure is the hub. One may have more offset than the other. I have encountered this before. Recheck the spindle arms to verify they are not bend or sprung.

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