allis chalmers c rear wheel wedges

If you have the right bolts on the rim two will have a cam on them, these will have a cross stamped on the head of the bolt. the long arm on the cross should be rotated to point out towards the rim to lock the rim in place. there should also be some ribs on the rim that the wedges set into to help hold the wheel from turning on the center.
 
The two bolts with the cross on the head should be next to each other. If they are then move the tractor till they are in the top half of the wheel, loosen the nuts and turn the bolts as needed and tighten the nuts. If they are still loose you can shim some or all of the wedges with sheet metal.
Zach
 
There should be a drive lug on the rim where one of the clamps without the cross should be located. This keeps the rim locked in place radially and helps keep the other clamps tight. There was also a style that used wedges, but I have only had one tractor like that.
 
Zachary and Handyman are exactly correct, so you will need to set the cammed bolts next to each other set to take up the slack. B's and C's are small tractors. Raise one rear, loosen the four bolts, tighten the adjust and snug the two cammed bolts with the "X" on them, tighten all four crossing back and forth. When I did mine, I used a small hydraulic jack and 2x4 to hold the rims in place and set the cammed bolts in place and snugged them down, then snugged the other two bolts, then tightened all four, crossing to equalize pressure like any other piece with multiple bolts. Then did the other side. All is much easier to do before it walks out of one of the rims, and if neglected long enough, it will. Been there, done that, learn from my mistakes so you don't make them too.

Good luck.

Mark
 
This would be a pic of a wedge, I think you have the common clamp and eccentric bolts. I'm not sure when or why AC used this design...maybe on later models as they appear to be an improvement.

 
Here are pics of the rim clamps that I was talking about, both the camed and non camed types.
16944.jpg
16945.jpg
16946.jpg
 
thanks to all big help the wedges and bolt on wheel are the wrong one's plain bolts no cam wedges are wrong to need to find them thanks again
 

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