The Stovebolt Site Forums The Parking Lot Big Bolts Rear wheel cylinder difference

I've been honing my rear wheel cylinders for my 4400 big bolt. I have only one side apart right now. I have two pistons that just have a smooth taper in them where the pushrod goes, and two that have a step where the taper begins. Is this normal? Does it matter where I put them? Thanks for any help. Jim

Hy ChetMan, are you saying that one set of pistons use ring type cups, and the other set take the regular flat cups. I can't invision what you're trying to describe, any chance of a picture?

Shop Shark,
I don't have a picture, but I'll try to describe it better. The little pushrods that have a fork on them...that slip over the brake shoe and the other end goes into a little dished-out area of the wheel cylinder's piston. Follow where I am this time? That dished out area that the pushrod goes into is the area I am talking about. Two of my pistons dished out places are smooth to the edge of the piston's diameter, while two go up to a little 1/8" shoulder around the edge of the piston. Just can't think of a reason why it would make a difference...

Hy ChetMan, thanks for the description, I don't think it will matter as long as the brake shoes will come all the way back to their anchor points, hope that helps.

I would agree with 3B. I would think that at some time, they were replaced or the pistons were repaced and the piston design was slightly different between suppliers.