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Farmall & IHC Tractors Discussion Forum
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Tighten up steering on Super A

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J Risher

02-28-2004 14:20:44




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I have an older Super A. Was working on it today and trying to figure out how to tighten up the steering. It has about 3/4 of a round slack in the steering wheel before the wheels ever move. I took off the cover on the end and then a casteled nut came off. There is a bearing I dug out. The bearing does have some slack in it. Will replacing the bearing solve the problem or is there a gear that has to be replaced? Thanks, J. Risher.

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Jim in NC

02-28-2004 17:36:04




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 Re: Tighten up steering on Super A in reply to J Risher , 02-28-2004 14:20:44  
Years ago I went to AN IH dealer to get some parts and just happened to ask how they fixed the loose steering on 140s , Super As and similar tractors. I had worked on my 140 a couple of times, the last by cutting a wider keyway and replacing the woodruff key with a much heavier key. It did not seem to help much. I asked if it would be okay to weld the half gear to the shaft. His answer was very surprizing. "That's the way we fix most of them" was his reply. Some time later I tore into mine but just tacked the gear to the shaft as I was a little leery of this. It held for about 2 months. In that time, my 140 probably had the tightest steering of any around, and there are many in my area used in tobacco and gardening. When I get real energetic and motivated, I plan to go into it again and really fix it this time. Good Luck1

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Dave, Sherburne, NY

02-28-2004 17:17:29




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 Re: Tighten up steering on Super A in reply to J Risher , 02-28-2004 14:20:44  
Did you check the steering arm where it fastens
to the vertical shaft through the steering gear
box. The end of the shaft is probrobly square
with a square hole in the steering arm. I'll
bet it is very sloppy. Poor design, changed to a tapered end shaft with key which could be tightened . That said, I put shims on my square
shaft and it was tighter. That was on the A.
On the super A, I found an old knowledgeable
parts man who knew that IH at one time offered
a repair kit which changed the square end shaft to a tapered one. The kit is no longer available,
but the individual parts are . Hugh can probrobly tell you which tractor started using the tapered end shaft 100, 140 or whatever.
The shaft and new arm takes care of outside the
gearbox slop, but the inside sector gear will
still need work. I had a new keyway cut in the shaft and 180 degrees from the old keyway. But I'll bet Hugh's method works as well and is cheaper.

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Hugh MacKay

02-28-2004 18:39:05




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 Re: Re: Tighten up steering on Super A in reply to Dave, Sherburne, NY, 02-28-2004 17:17:29  
Dave: Actually the most sucessful one I've done is the one we welded a key in the keyway of shaft and pressed the cog on the shaft. I've always been a bit reluctant to pass that on as I felt it was more good luck than skill that it came out so well. The keyway on this unit was damaged so badly, it was my opinion shaft was toast anyhow, so what did I have to loose.

On the matter of tapered shaft, my Super A serial number 336977 has the tapered shaft. I can't enlighten you very much on that as I have never been involved with a steering box older than that. I was aware of the square shaft but not when change occured. Tyrods, etc changed around 51 so maybe other front end items at that time, just a guess.

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Hugh MacKay

02-28-2004 15:59:54




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 Re: Tighten up steering on Super A in reply to J Risher , 02-28-2004 14:20:44  
J Risher: Inside your steering box there is a worm on the shaft coming from steering wheel. The other shaft going down through bottom of box with steering control arm attached has half cog inside driven by the worm on other shaft, That half cog is keyed to shaft with woodruff key. You can get lot of looseness right in that key. That one is the cheap and easy fix. You just have to remove front axle and drop bottom from steering box. I have run across a few of these with key way damage. I use a larger key and grind it to make a tight fit. I did fix one by welding key in shaft and grinding, but leaving it tight enough cog had to be put on with a press. It is really your call when you see how bad the key and keyways are.

Another item that can cause looseness is a worn worm and cog. You can expect to pay dearly for them. I was quoted over $400. about 10 years ago. I decided that tractor could become my off road tractor.

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