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Allis Chalmers Discussion Forum
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Advice sought for loosening eccentric on wheel...

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Chris in MO

08-27-2008 20:10:40




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I've got a D-17 with power adjust wheels. I have never messed with them since I've owned this tractor. Who knows when they were adjusted before that.

Well, I wanted to narrow the tread width so I could get it up on my trailer. Those dang eccentrics are frozen up. I've tried spraying penetrating oil in there, heating it, etc. Are there any tricks to this or just a Bigger Hammer (in this case a bigger impact wrench, which I have access to through a neighbor)?

Thank you in advance.

Christopher

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DiyDave

08-29-2008 10:28:39




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 Re: Advice sought for loosening eccentric on wheel... in reply to Chris in MO, 08-27-2008 20:10:40  
Easiest way is to remove the 2 bolts that connect the entire clamp mechanism to the wheel center. Roll the one you want to work on top 12 o'clock position, remove, making sure not to drop or lose the funny looking little piece of metal that rides the rail, put in a vise, hit with kroil, then take an impact gun, back and forth. Once you get it moving nice, pull out the snap ring, dismantle and coat liberally with Never-Seize lube. Replace, and repeat 7 more times, and you're done.

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Flat47

08-28-2008 18:32:04




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 Re: Advice sought for loosening eccentric on wheel... in reply to Chris in MO, 08-27-2008 20:10:40  
I broke a bunch of stuff the day we picked up our '61 D15 trying to narrow it to fit it onto the trailer. I broke 2 sockets, a 4-way lug wrench, and a breaker bar. Man that was an ordeal!
Since then, I regularly spray them with 4 Way Plus or PB Blaster and have had no problems.

But, getting them loose can be a pain. The advise posted earlier is all good. Keep working at it and you'll get them free.

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JMS/.MN

08-28-2008 17:50:17




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 Re: Advice sought for loosening eccentric on wheel... in reply to Chris in MO, 08-27-2008 20:10:40  
Loosening? start at the top eccentric. Tightening? start at the bottom and work up. Use 6 point sockets, cheater bars. Worst case- remove the castings from the wheel centers and disassemble. Once released and renewed, they should be good for years.



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Iowa Bob

08-28-2008 12:54:02




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 Re: Advice sought for loosening eccentric on wheel... in reply to Chris in MO, 08-27-2008 20:10:40  
I have a WD45 that I am the second owner of. The wheels had not been moved for 47 years when I wanted to narrow it up 2 notch's. I couldn't move the eccentric's at all. I used a 3/4 Drive socket with a breaker bar and 3' pipe(no luck).
Talked to an old AC Mechanic he said he would help me. When he came out we used my 3/4 Socket and 3/4 Drive with a 3' Breaker bar, added a 6' pipe I held the 90 degree turn level and he applied the pressure. Snap they broke loose, we oiled them up moved them back and forth and now I can change them myself. I thought we would break something, but we didn't.

Thanks Iowa Bob

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TexasAllis

08-28-2008 05:24:30




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 Re: Advice sought for loosening eccentric on wheel... in reply to Chris in MO, 08-27-2008 20:10:40  
Try jacking the tire up and moving the eccentric you are trying to loosen to the top of the wheel. That puts the least amount of pressure on the eccentric.



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old

08-27-2008 20:43:09




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 Re: Advice sought for loosening eccentric on wheel... in reply to Chris in MO, 08-27-2008 20:10:40  
You know thats almost funny. I have moved them off and on and never had a problem. Guess I hold my mouth right. Now then to get to the real things. Try to back it out and then tighten it back up do the in and out thing. Also whack them with a hammer a few times because doing that some times will loosen one up. But as I said I have never had any problems with them. I have moved them on D-17s, WDs WD45s and a case 300

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