Sorry to post another “what’s up with my brakes” thread as I’m aware there have been a few recently…
Anyway, decided to service my Hop Mono Minis this weekend (new pistons, seals etc.) after 6 years of maintenance free joy.
Anyway, followed an online guide, popped the inboard pistons out no proplem, removed the bore caps but really struggled to get the outboard pistons out on both front and rear calipers. They slid smoothly for a mm or two then stopped dead. Had to resort to drifting them out in the end.
Has anyone else had this problem?
I’m obviously worried that whatever was causing the issue getting the old pistons out may damage the new ones.
Oh, and oddly enough, for a brake set bought new as a pair the front had steel pistons and the rear had phenolic, one of wich was in backwards! Still worked faultlessly for years though…