Posted by ld1 on November 05, 2013 at 13:23:52 from (24.26.142.243):
Long time member of tractorbynet.com and not much IHC knowledge there so I hope you all can help.
I have an IHC 300U that I a restoring. Having issues getting the steering dialed in. Not sure if it is just the way it is supposed to be, or if something is incorrect.
When aligning all of the marks (putting the steering wheel @ middle of travel) and setting toe, all looks well. But when turning the steering wheel hard each direction, it seems I hit the stops at the spindles before the steeringbox is out of travel. Thats fine when everything is level, but the when you try to pivot the axle, the side going down is trying to lengthen the draglink, and the side coming up is trying to become shorter. They cant cause the spindles are into the mechanical stops. So it makes the steering wheel move to correct. I am afraid when in the field, and the weight on the tractor, the steering wheel isnt simply going to move, rather it will bend or break something.
I may be wrong, but it seems the steering box should run out of travel before the stops are hit at the spindle, to allow the axle to pivot if needed without binding.
Now this steering box does have the longer 11" pitman arms like the 350u. SO my first thought was that the front arms were still the short ones, but they are the longer 8-15/16" arms as well.
So now I am stumped. It seems a shorter pitman arm would solve the issue. That would make the draglink travel less from hard left to hard right, and keep the spindle off the stops to allow it to pivot. Problem is obviously much worse when the axle is set wider.
I do believe the steering box is indeed off a 350 also, cause the sector shaft that is driven by the worm gear (the one that drives the left tire), only has 3 teeth. And according to the online IH parts diagram, the 300 had 4 teeth and the 350 had 3. But I dont understand how that is a problem since it has the longer arms up front.
So before I do something stupid like cutting and shortening the pitman arms, I am looking for some feedback as to why this is binding against the stops when hard left or hard right and the axle tries to pivot? Infact, with the tractor setting on jackstands and the front free to pivot, when turning hard one direction or another, the draglink that is pulling back actually pulls the front axle up on that side, and the link pushing away, actually pushes the axle down. Again, seems like the gearbox is traveling more than the spindles will permit.
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