High speed wobble

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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EZ
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High speed wobble

Postby EZ » Sat Jul 07, 2018 7:55 pm

My 130 is experiencing a pretty good front wheel wobble in 4th gear, usually starts when I hit a bump.
Anyhow, I had been into the steering twice, once during the rebuild, and then once again to see if the woodruff key had given out again.
Nope, the key was in tight and holding the gear firm, new bearing, everything tight, but still a lot of play in the steering. I am thinking I probably require a new shaft and sector, but would be a big cost if it does not cure the slop.
Back to the wobble.
I repaired the wobble by attaching 2 bungie cords to the steering arm and cinched up tight, each bungie cord is then fastened by it's hook to the end of the torque tube.
Works like a charm. No more wobble.
Of course this does not cure the original problem in the steering, but for now it helps and I believe it also takes some stress off of the sector gear that results when the wobble gets to slapping to and fro.
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Bill Hudson
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Re: High speed wobble

Postby Bill Hudson » Sat Jul 07, 2018 8:06 pm

Simply an uneducated question given your summary of past repairs, is toe in set correctly?

Bill
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EZ
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Re: High speed wobble

Postby EZ » Sat Jul 07, 2018 8:21 pm

Bill Hudson wrote:Simply an uneducated question given your summary of past repairs, is toe in set correctly?

Bill

Hi Bill, good question, and yes the toe in was wrong. It measured about an inch and quarter wider when compared to the front, but I fixed that the other day to 1/8 inch, but the test run after and the wobble was still there. I saw a video where a guy attached a small shock absorber to cure his and that is what gave me the idea to try the bungle cords. The opposing pressure in each direction keeps the steering arm centred in place.
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tst
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Re: High speed wobble

Postby tst » Sat Jul 07, 2018 8:42 pm

worn steering gear parts can cause this, I think you already know what you need to do

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EZ
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Re: High speed wobble

Postby EZ » Sat Jul 07, 2018 11:12 pm

tst wrote:worn steering gear parts can cause this, I think you already know what you need to do

Hi,
Been thinking as well that the worm gear on the steering rod could be worn also. Not sure at this moment if that requires an entirely new rod or if the worm could be swapped. Never really looked at that in the parts manual
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EZ
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Re: High speed wobble

Postby EZ » Sun Jul 08, 2018 7:22 pm

Seems the entire steering rod would need swapped if it is worn bad. When you think about it, there is quite a lot of stress on those parts.
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Re: High speed wobble

Postby Super A » Sun Jul 08, 2018 7:52 pm

Old fashioned fix around here is to weld the sector gear to the vertical sector shaft. I wonder if drilling and putting a pin through it would be better.

Check to see that the center arm is tight on the vertical sector shaft. Get somebody to turn the steering wheel while you watch.
Al
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EZ
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Re: High speed wobble

Postby EZ » Sun Jul 08, 2018 9:24 pm

Super A wrote:Check to see that the center arm is tight on the vertical sector shaft. Get somebody to turn the steering wheel while you watch.
Al


That I will do Al.
Also welding the gear to the shaft, that would ensure no further problems with the key. :D
Just Do It !

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AL Farmall Boy
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Re: High speed wobble

Postby AL Farmall Boy » Mon Jul 09, 2018 11:41 am

EZ wrote:
Super A wrote:Check to see that the center arm is tight on the vertical sector shaft. Get somebody to turn the steering wheel while you watch.
Al


That I will do Al.
Also welding the gear to the shaft, that would ensure no further problems with the key. :D


That is what I've been told creates the excessive play and to weld it to eliminate it. I've heard that the worm gear parts get little to no wear that cause play. I do believe that, but when the tractor is 70 years old I believe it has to have some wear down there. It is a little bit of work, but not too bad. Personally, I would try welding them up, putting together and see how much that helps; and then keep fixing and narrowing it down to see what the cause is.
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Chase
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User avatar
EZ
10+ Years
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Posts: 1096
Joined: Tue Feb 11, 2003 6:33 pm
Zip Code: P0M1Z0
Tractors Owned: 49 Cub
67 International Cub Loboy
57 Farmall 130
Location: Northern Ontario

Re: High speed wobble

Postby EZ » Thu Jul 12, 2018 9:42 pm

I enjoy your page Sir
Just Do It !

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AL Farmall Boy
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Re: High speed wobble

Postby AL Farmall Boy » Fri Jul 13, 2018 11:51 am

EZ wrote:I enjoy your page Sir

Thank you! Haven't posted in a while as my back has been in bad shape and haven't done too much. Hope to get to posting again soon.
Regards,
Chase
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:tractor: Follow my page "Alabama Tractor Pickers" on YouTube & Facebook! :tractor:


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