Originally Posted by
Miyata110
Unfortunately, part #15 on the diagram is not applicable to my brakes - it doesn't exist. I would consider the fact that it is missing, but it does not exist on my front brake either. I just disassembled the entire brake, cleaned everything as best as possible, and still I'm having issues. Other thoughts?
Either the bridge is threaded, or there needs to be a bushing of some kind so that the bolt can be tightened without compressing the arm. The other possibility is a
shoulder bolt which has a set length which the arm rides.
Take another look, or take the brake apart and lay out the parts in line and post a photo. Weinmann made those brakes for 20-30 years (or more) so there may be various versions.