Wheel to Rim Clamp Bolts

Anonymous-0 · Jul 9, 2009

The bolts used to clamp the wheel to the rim are all super rusted up on my M. The wheel is slipping on one side. I would like to just burn them all off and get new bolts and nuts. The inner nuts are thinner than a normal nut so I can't use a regular nut. Does anyone know where to get the right square bolts and nuts for the tractor?

Anonymous-0 · Jul 9, 2009

I just cut off all of mine and am going with regular hex head bolts, new jam nuts and using the old outer nuts as they are in good shape and are larger od than new nuts.

Anonymous-0 · Jul 9, 2009

Aren't the inner nuts thinner than a regular nut? I tried regular hex nuts and they were so thick I had no hope of clamping the rim. I was thinking of leaving them out and just putting some washers in there to take up the space and then using a regular nut on the outside. I think the reason for the inner nut is to just hold half of the clamp in place while your installing the other half. If you do 1 at a time it should be alright to leave out the inner nut?

RegularJo · Jul 9, 2009

The thin nuts are called jam nuts. You should be able to find them at your local hardware store or you can order them from Fastenal or some other bolt and tool supply. Fastenal also has square head bolts, but I am not sure of the grade. You probably want to use at least a grade 5 bolt on your wheels.

mkirsch · Jul 9, 2009

McMaster Carr carries square head bolts in Grade 5. They probably have the Jam nuts too.

ScottyHOMeY · Jul 9, 2009

Careful! All I've ever been able to get from McMaster for square heads is Grade 2.

Earnest Machine and one other company whose name escapes me this minute hae been reliable for Grades 5 and 8.

D Slater · Jul 9, 2009

Pete, I never had much luck finding a standard bolt the right length with enough threads for the Jam nut and outer nut at the same time without going to a longer bolt and using washers under the head or cutting more threads. Did you find a standard one that will work? You can get new X heavy nuts that are 1-1/16 wrench size at bolt outlets, but the originals were 1 inch wrench size. Good Luck

LOU from WI · Jul 9, 2009

What we did on our 706 was use Grade 8 hex head fine thread bolts and bought some flat washers for the bolts, then we ground off two sides of the flat washer to fit between the clamps(as the square bolts used to) then tack welded very lightly the washers to the bolts with a mig welder.Then we reinstalled the bolts in the clamp that holds the cast iron housing to the rim ( about 15 bolts per side) and used the nyloc nuts to keep them tight.

Roger46 · Jul 9, 2009

I used the Grade 2 bolts from McMaster Carr and have not had any trouble with them breaking. The good thing about Grade 2 bolts is that you can cut longer threads on the bolts so the jam nuts fit correctly. It is a job to cut threads on that big a bolt just clamping them in the vise. I would think if you didn't use the jam nuts it would be hard to get the rim on straight. Roger

Anonymous-0 · Jul 9, 2009

I just cut a few more threads on a grade 5 bolt, and use a nice hard flat washer under outer nut using a 4 1/2 in bolt. Looks good. The jam nut doesn't have to be super torqued anyway so if those threads are less than perfect it will not have any effect on overall holding ability of the lugs as the outer nut is doing all the tensioning. Like I said though, I like the original nut as it takes a 1 inch wrench whereas all new std nuts take 15/16.I stay with nc threads also as they never gave much problem holding the wheels and are a whole lot easier to loosen in a few years down the road. I will add also that some use nc threaded bolts on the front rims also but that is not the way to go on them. Just my way I guesss.

Wheel to Rim Clamp Bolts

Anonymous-0

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Anonymous-0

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Anonymous-0

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RegularJo

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mkirsch

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ScottyHOMeY

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D Slater

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LOU from WI

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Roger46

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Anonymous-0

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