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Farmall & IHC Tractors Discussion Forum
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48' Farmall H Traction Tire Size

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Mike in OR

05-27-2007 21:51:09




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I have recently aqcuired a 48' Farmall H that is in really good shape. I had to do very little to it to get it purring like a kitten, so I'm happy about that. I have been using it lately to pull some large stumps out of a slash pile so I can cut them up. The problem I'm having is that when ever I get a hold of a really big one and start bogging the tractor down, only the left rear wheel seems to be doing all of the work and bores a nice hole to china while the right wheel seems to be doing no work at all. The has happened several times and I am curious to know how the axles work on this thing. It does not appear to have positive traction or a limmited slip differential, is that true? I would have thought that all tractors would have this type of diff. Is it possible that something is broken and I should be looking into fixing it? Sorry I'm so dumb about this, this is my first tractor and I'm totally digging it. I'm ordering a few different manuals on it, but thought I'd ask my question here in the mean time in case anyone out there knows. Thanks for any answers I get. Mike

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Mike in OR

05-28-2007 08:54:16




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 Re: 48' Farmall H Traction Tire Size in reply to Mike in OR, 05-27-2007 21:51:09  
Thanks for all the advice on the brakes guys, that thought occurred to me but I hadn't given it a try yet, I've just had both brakes locked together with the lever and not unlocked them yet. So the tire size difference doesn't seem to be a really big deal, I agree that I ought to be running the same tire on each side, but it doesn't sound like anything will break because of it.

I appreciate your input.
Mike

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williamf

05-28-2007 06:17:35




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 Re: 48' Farmall H Traction Tire Size in reply to Mike in OR, 05-27-2007 21:51:09  
There's not a limited slip differential on these. The wheels sort of push against each other. Which ever one has the least traction (because of different weight loading, a patch of mud or sand, or, as in your case, a smaller tire) will spin first. If you press the brake pedal for the side that's spinning that will force the other wheel to try harder. With a little practice you'll get to where you can make both tires spin equally and get good and stuck ;-) My H has had its rear end sat down in the sand a couple of times.
Good luck, Wm

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Karl Hamson

05-27-2007 22:29:14




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 Re: 48' Farmall H Traction Tire Size in reply to Mike in OR, 05-27-2007 21:51:09  
Hi, I do not own an H but as far s I know these do not have a diff lock. If your right wheel is spinning, hit the brake on the right side or vice versa. This will cause the other wheel to take up some of the load. Works for me. Karl



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toolz

05-27-2007 22:26:53




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 Re: 48' Farmall H Traction Tire Size in reply to Mike in OR, 05-27-2007 21:51:09  
None of the older tractors had a differential lock or "limited slip". Your smaller tire is spinning since it has less contact with the ground. Add some rear wheel weights for better traction- IH weights are cheap and easy to find. Good luck-



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Mike in OR

05-27-2007 22:01:45




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 Re: 48' Farmall H Traction Tire Size in reply to Mike in OR, 05-27-2007 21:51:09  
Oops I forgot to mention the tire size issue, the left is 11.2-38 and the right is 12.4-38. Is this a problem having these mismatched tire sizes?
Thanks again, Mike



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CNKS

05-28-2007 06:37:16




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 Re: 48' Farmall H Traction Tire Size in reply to Mike in OR, 05-27-2007 22:01:45  
It will work, but it is best to have both the same size and same ply rating. Be careful with that chain or strap, if it breaks you might be dead. You can get some of the effect of a locking axle by pushing the brake of the spinning wheel. There is a little difference in the distribution of the power as far as I am concerned. On my 460 (basically an H rear end) I sometimes put it in 5th and jack one or the other sides up to turn the engine over to find TDC, etc. (don't have the hand crank). The right wheel turns much easier than the left.

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GeneMO

05-28-2007 08:31:49




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 Re: 48' Farmall H Traction Tire Size in reply to CNKS, 05-28-2007 06:37:16  
One of the first things I was taught at about age 8 or 10. Use the brakes!


Gene



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