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H Front End Wobble

G

George Rausch

Member
Have addressed this before, but I still have wobble. I have tightened up and serviced the front sheel bearings, and that may help. I now have pulled the bolster bushings out, and the thickness mikes as follows;
top small bushing = 0.063" - 0.064" all around.
Bottom large bushing = 0.090" - 0.094" all round.
The IH dealer didn't have them in stock to check and see if these were OK. The bushings sure do not seem worn hardly. The bottom one is nicely burnished outside, down to the copper-looking level, and the top one has a scuff mark inside. They both are uniformly the same thickness all around; no worn spots.
Think these bushings are OK?
 
[b:1ea50a1681]Have you checked the diameter of the shaft and the inside diameter of the bushings to see what the total slop is?


Maxx[/b:1ea50a1681]
 
I had this issue once between two different H's. One would glide nice and straight down the road and the other would insist on breaking into a wobble.

We had ripped a front tire on the straight rolling one and pulled a wheel from the other tractor. That same wobble followed the wheel.

The point of my story ... I was getting ready to start down the same path as just described had I not found this quite by accident.
 
(quoted from post at 19:43:08 10/24/11) I had this issue once between two different H's. One would glide nice and straight down the road and the other would insist on breaking into a wobble.

We had ripped a front tire on the straight rolling one and pulled a wheel from the other tractor. That same wobble followed the wheel.

The point of my story ... I was getting ready to start down the same path as just described had I not found this quite by accident.
Click to expand...

So the rim was warped? The tire was junk? The rim was not tightened evenly?
 
I am with sflem on this one.

First,check the simple things.Just jack up the front of the tractor enough to spin the front wheels and check the "runout" of both front wheels and tires.Set a sledge hammer(or something heavy)right next to the front wheel while spinning it and see how bad the "back and forth"is.ALSO,take a look at the "up and down"movement is(staring straight into the spindle of the front wheels)

You would be surprised on how many wheels/rims/bad tire cords you can find like that!!! After 50 years+ of field work,there are bound to be a few bent ones!
 
I have dealt with this problem before, in my expierence it will be the runout of the tires or a bad tire. You can take em off and kinda reposition them sometimes. Try to get it to spin true with it off the ground like 1972 said. Unless the steering gears and u-joints are very bad, giving you alot of play in the steering. I don t think the bolster could be bad enough to do it...but I did have a bolster crack one time on a loader H, and I think a worn bushing helped cause that one. Look at those tires, IMO.
 
Like the guys said below, I would check the runout also. Sometimes just rotating the tire with excessive runout a 120° cures the problem. It can also be compensated for by installed a shim (washer) between the rim and hub. It's simple enough to check. I had the same issue with one of my H's. Good luck with it!

Billy
 
I have the same problem with my H with 2 different front ends. I changed from wide front to narrow and it still wobbles in road gear above half throttle. Slower than that it's stable. I put new bearings, cups, rims and tires on the narrow front. The wear must be in the upper end. Tractor was used with a loader for many years. When you discover a solution let me know. Thanks.

Larry
 
Since noone else has mentioned it I will, its almost always the steering gear and worm , they usually start wearing when the oil leaks out and is never refilled or fixed
 
(quoted from post at 04:03:32 10/25/11)
(quoted from post at 19:43:08 10/24/11) I had this issue once between two different H's. One would glide nice and straight down the road and the other would insist on breaking into a wobble.

We had ripped a front tire on the straight rolling one and pulled a wheel from the other tractor. That same wobble followed the wheel.

The point of my story ... I was getting ready to start down the same path as just described had I not found this quite by accident.
Click to expand...

So the rim was warped? The tire was junk? The rim was not tightened evenly?
Click to expand...

Sorry .. I guess I left that part out. I had a warped tire for what ever reason and replacing that cleared up my wobble.

I discovered that even with that typical "play" throughout the steering linkage .. the tractor will still roll evenly down the road. If the tread line is not symmetrical then yes, I would start to "wobble".
 
Didn't mean to sound mean was just in a hurry when
replying bu yes front rim condition defly matters. My m has
more play than my h and it rarly wobbles while the h is
about undrivable in road gear
 
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