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rear axel torque problem


 
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Brewmaster
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Joined: 18 Jun 2020
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PostPosted: Thu Jun 18, 2020 7:34 pm    Post subject: rear axel torque problem Reply to specific post Reply with quote

I have had my 1952 8N for about 40 years. I have rebuilt the engine and converted it to 12v, it runs well and has been a good tractor. It needed breaks. I have replaced the shoes. I needed to pull the hubs to replace a few break support plate studs. Problem: When I but the hubs, axle nut and washer back on and tighten them, when I get to about 100lb torque everything binds up and I am unable to turn the axel. This happens on both sides. It should be very simple, what have I forgotten? Thanks
 
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JMOR
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PostPosted: Fri Jun 19, 2020 5:25 am    Post subject: Re: rear axel torque problem Reply to specific post Reply with quote

It didn't do this until you opened it up and added/changed something. Look for scrape marks, listen for sounds, compare parts removed, added, replaced. Incorrect parts or incorrect assembly will be the problem.
 
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Brewmaster
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PostPosted: Fri Jun 19, 2020 1:00 pm    Post subject: Re: rear axel torque problem Reply to specific post Reply with quote

Thanks, I will be working on it tomorrow
 
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sunsettractor
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PostPosted: Fri Jun 19, 2020 5:42 pm    Post subject: Re: rear axel torque problem Reply to specific post Reply with quote

This link has a lot of good info for setting up the bearing clearance, was very help full when I helped my neighbor with his 51 axle
replacement. Hope this helps you.
8n rear axle

 
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rew1953
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PostPosted: Fri Jun 19, 2020 6:13 pm    Post subject: Re: rear axel torque problem Reply to specific post Reply with quote


The axles need a small amount of free play to function correctly. With the new hubs, you are getting too much preload on the bearings. You need to add a shim or two to the new hub to get some free play. There is a good video on Youtube that goes thru the procedure step by step. Just go thru the search for tractor type and job.
 
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grouser
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PostPosted: Mon Jun 22, 2020 8:46 am    Post subject: Re: rear axel torque problem Reply to specific post Reply with quote

a good friend explained to me a great way to set the preload. Jack the tractor up and start on one side of the tractor installing one or two shims and tightening down the hub nut. Then go to the other side and put it together dry with just one shim turn the rear wheels if they both turned in the same direction it's too tight pull the bearing retainer off , add another Sim , tighten it back down do it again add shims until one wheel turns one way one wheel turns the other way. You've got it congratulations.
 
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