Farm Equipment - Dealing with Power-Adjust wobble

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Dealing with Power-Adjust wobble

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=46464
Printed Date: 27 Jul 2025 at 7:32am
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Topic: Dealing with Power-Adjust wobble

Posted By: Eddie(IL)
Subject: Dealing with Power-Adjust wobble
Date Posted: 01 Mar 2012 at 6:48am

Anyone ever have problems dealing with aftermarket power adjust wheels not rolling straight? Is there a good way to correct it? I have a D15 with 26" wheels and I'm haveing trouble getting the one side to track straight. The eccentrics don't have much resistance when you bind them against the rail. Maybe the cams are worn or possibly a defective wheel? Thanks for any help on this. Eddie

Replies:

Posted By: Stan IL&TN
Date Posted: 01 Mar 2012 at 8:09am

I would jack up that side off the ground, loosen the eccentrics so that you can spin in and out the rim and let it find it's sort of sweet spot in the general location that you need. Then tighten it up and see if it helped. If it still wasn't correct you may need to remove that rim and install it on the other side to be sure it's the rim and not the center or eccentrics. That would be a pain but would tell you where the problem is.

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1957 WD45 dad's first AC

1968 one-seventy

1956 F40 Ferguson

Posted By: Hurst
Date Posted: 01 Mar 2012 at 8:46am

Old mechanic said he would always take a coke can/bottle, lay it close to the tire, then rotate it and slowly move it in closer to the tire as it was rotating. When it started to rub in one place, you could find out where the tire was out of line and adjust it. I guess if you have a hardware problem, this won't be much help, but if it just needs to be lined up it could work.

Hurst

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1979 Allis Chalmers 7000
5800 Hours

Posted By: Dakota Dave
Date Posted: 01 Mar 2012 at 10:44am

Loosen youir eccentrics. and spin the Wheels all the way out. set the stop where you want the tire. Now spin the wheel in untill it contacts the stop. let the tractor move in the direction your going a few feet. Last tighten the eccentric cams starting at the bottom. Your wheel should run straight now. Take a close look at it and make sure the tire is completly seated all the way around. Its more likely the bead is not completly seated than the rim is not runing true.

Posted By: j.w.freck
Date Posted: 01 Mar 2012 at 9:05pm

the book tells you that you can have as much as a 1/8 to 1/4 in of wobble..

Posted By: Eddie(IL)
Date Posted: 02 Mar 2012 at 6:46am

Thanks for the advice guys...this was out enough that I even put a dial on the wheel center to make sure it wasn't bent. I got everything against the stops and locked it down, and it rolled out pretty good, but when I got it out to drive it, it popped loose on the ecentrics and wobbled again. I'm apparently going to have to replace the cams so I have more tension against the rails.

Posted By: Dakota Dave
Date Posted: 02 Mar 2012 at 8:41am

When you tighten the cams they need to go all the way against the stops. when you do that they overcenter and can't loosen.

Posted By: Chris (swIA)
Date Posted: 02 Mar 2012 at 11:26am

If your blocks in the eccentrics are worn, the rim will not tighten up properly. you can buy replacements from Jim Danforth, Tony Carbaugh and others.

Posted By: Ted in NE-OH
Date Posted: 02 Mar 2012 at 1:40pm

I had problems with aftermarket rims for a CA. The rails were not welded on correctly. Sent them back and got replacements.

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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914