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Old 12-09-2011
gcyeaw's Avatar
gcyeaw gcyeaw is online now
Join Date: Dec 2007
Location: Ridgewood
Posts: 8,899

On the dual tires that square ended stud is actually the nut for the inner wheel. There are studs on the hub, the inner wheel fits over them and the outer stud/nut (it is hollow, threaded on the inside and outside) is tightened up using the square head. Then the outer wheel is mounted and the outer nuts thread onto the outer stud/nut. The outer stud/nuts are prone to break if over tightened or repeatedly removed and re-installed. I have a special tool to remove them. Here is a pic of me using the tool It hammers over the broken end and allows it to be unscrewed, hopefully.

It's hard to see in the pic but the inner end of the outer stud is tapered to fit the wheel hole and hold it in place.
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Gardner Yeaw
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