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Tractor Talk Discussion Forum

narrow front /hub

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SDE

03-28-2007 15:59:22




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I was going to put the inner bearing in the narrow front when I noticed that the bearing race was extremely loose. The race had spun in the hub. Where the race fits, it is tapered as well as worn oversize. I measured it at work today. The O.D. of the race was 3.1491 and the I.D. of the hub was 3.155 at the bottom of the bore and was 3.158 toward the middle of the bore. Would you be so kind as to suggest a repair for this problem?
Thank you STEVE

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george md

03-28-2007 18:24:11




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 Re: narrow front /hub in reply to SDE, 03-28-2007 15:59:22  
Steve,

There are two other options , bore it and

install a repair sleeve or spray weld it back

to size . Spray weld is a very good repair for

that problem.

george



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SDE

03-29-2007 18:06:52




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 Re: narrow front /hub in reply to george md, 03-28-2007 18:24:11  
George, is spray weld a product name or is it a welding technique?



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george md

03-29-2007 19:08:06




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 Re: narrow front /hub in reply to SDE, 03-29-2007 18:06:52  
SDE,

spray weld sometimes known as metal spray is

a process using either powder or wire run

thru a flame to start the burn (melt) . The

burning metal adheres to the base material.

How small is the bearing bore that you need

repaired?

Link will show some spray

george



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SDE

03-30-2007 15:31:49




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 Re: narrow front /hub in reply to george md, 03-29-2007 19:08:06  
The bore should be 3.1491, which is also the size of the bearing race. I assume the bearing race should have been closer to being 3.1496.

I do not need this hub immediately, so I think I will try to machine it oversize and then make an insert to get it back to the correct size.
Thank you Steve



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jmixigo

03-28-2007 18:05:14




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 Re: narrow front /hub in reply to SDE, 03-28-2007 15:59:22  
Repairs fall into two "catagorys"-patches and fixes. Patch jobs get a feller by for a while, then fail at the worst possible time. The best fix on this one is a new hub. Prolly not what ya wanted to hear but there it is. Number two option is to find a suitable bearing with a slightly larger O.D. and bore the hub to fit. Any thing less is a patch.

My opinion anyway.



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SDE

03-29-2007 18:11:51




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 Re: narrow front /hub in reply to jmixigo, 03-28-2007 18:05:14  
I am not ever comfortable selling anything that I feel isn't repaired properly. I may try the rebore and sleeve option, if I can get it to work in my turning machine at work. Thank you
Steve



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CENTAUR

03-28-2007 16:20:12




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 Re: narrow front /hub in reply to SDE, 03-28-2007 15:59:22  
There is a LOCKTITE product made for this very problem.In a few cases I have prick punched evenly 360degrees to tighten up the bearing and today if I had a LOCK TITE type product I would use it also. CENTAUR



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SDE

03-28-2007 16:43:20




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 Re: narrow front /hub in reply to CENTAUR, 03-28-2007 16:20:12  
Thank you for the advise.
A co-worker suggested the "strawberry punch" with some green loctite. I know Loctite is good for up to .01 clearances.

I had thought of using a .005 piece of steel shim stock and the loctite, or maybe JB Weld. I wasn't very sure about how well any of this would hold up under the weight of a 5800 lb tractor. STEVE



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oleblu

03-28-2007 17:46:34




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 Re: narrow front /hub in reply to SDE, 03-28-2007 16:43:20  
Another fix is to get a piece of SOFT copper tubing, put it in the electrode holder of your welding cables, turn your welder up HIGH, and just go in the area you need to hold the race and "tack" some spots. The more the merrier. The copper is soft enough to allow you to drive the race in and it will be snug.



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