I'm showing 3 3/8" outside diameter.
Forgot to mention that there is a locking washer just behind the nut with some tabs that are folded down into a couple of the notches in the nut. You have to straighten them up to get them out of the way so you can loosen the nut.
Also there is a small dowel pin at the top of the carrier assy. inserted horizontally to keep the carrier assy. from spinning. Easy to loose if you're not careful.
Forgot to mention that there is a locking washer just behind the nut with some tabs that are folded down into a couple of the notches in the nut. You have to straighten them up to get them out of the way so you can loosen the nut.
Also there is a small dowel pin at the top of the carrier assy. inserted horizontally to keep the carrier assy. from spinning. Easy to loose if you're not careful.
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