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Wayne in Tn.
04-04-2003 18:18:01
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Re: Re: Re: JD 40 double front wobbles in reply to Bill, 04-04-2003 17:17:26
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Mark, since you are calling it a double, narrow front, you must have a (T) The only 40 with one stud in the steering shaft will be the (S) and (U) Your (T) will have two pins. As Clooney said, everything must be tight or you will have wobble in 4th gear. I remember back in the early 60's when I was a teenager, our 40 would wobble going down the road. So that means they were fairly new then and would still do it....
First, with the tractor sitting still and engine off and in gear... grab one of the front tires with both hands, and try to roll it back and forth, if you get motion in the steering support, then you will have to replace the bushings and bearings and thrust washer in it.
Then check the worm gear and pins for wear and possible adjustment of the box, tighten the screw as much as possible without the steering binding, when turning the full range from left to right. Check the bearings in the box and it may be possible to remove some shims from the front cover (3 bolts) If the worm itself is in bad condition, you may have to find a better one at a salvage yard. I don't know if these are still available from Deere or the cost.
Check the coupler on the steering rod, where it connects with the box, there is a special bolt and a woodruff key here. These are noted to be worn out or someone has tried to drill through it and put a regular bolt in it.
After you get everything tight as possible, that is all you can do. If it still wobbles and you plan to do a lot of highway driving, let some air out of one rear tire and add some to the other, this will help keep the slack to one side.
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