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Farmall & IHC Tractors Discussion Board

Re: cub steering box thrust washer?

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Posted by Janicholson on October 07, 2012 at 07:29:13 from (

In Reply to: cub steering box thrust washer? posted by ericlb on October 06, 2012 at 20:05:07:

The thrust washer shown in the parts diagram is needed to keep the shaft from excess up and down motion. The motion should be controlled between the top of the lower bushing flange (internal), and that thrust washer. there is a pinch bolt on the steering arm that is responsible for arm tightness on the shaft. If the arm is removed, the thrust washer can be removed. In my opinion, the 3/8 movement would allow the steering shaft to turn and the worm wheel to spiral up and down on the worm gear from the steering wheel.
The thrust washer (if missing or worn out) could be replaced with a oilite brass washer fitted to the shaft, and of thickness to allow only .002 to .003 movement up and down.
If the shaft is able to move laterally more than .003, front to back, or the end of the steering arm up and down, the bushings - #14 and 18 in the diagram - are worn. The thrust washer appears to be outside of the box lubricant. This would be a place of high abrasive wear, and the need for occasional application of sprayon grease.
The spindles for the wheels also play a major role in wheel control. Jack up the front (one side at a time) and shake the spindles in and out to see if they have bushing wear. (greasing them when up allows grease to get in the thrust surfaces as well.
Mobile1 synthetic tube grease, or JD corn head grease, is my choice for gear box lube. They do not run out of the seals like 90 wt. Jim


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