Noticed yesterday that my rear brake was dragging slightly - not too bad but the wheel wasn't spinning as easily as it usually does. BTW, I replaced the rear tire a few weeks ago and the wheel seemed to spin OK after I replaced the wheel after the tire change.
Well, even 120 psi of air wouldn't budge one of the caliper pistons !! I finally got it out and had a good used spare to replace it with. After removing and cleaning the piston seals and dust seals and cleaning out the seal grooves, I re-assembled and re-installed the caliper and bled the rear brake. What a difference !! The rear wheel spins without hardly any drag. The bike seems to have more pep now, too. I did a 55 to 100 mph pull and it ran great.
When I got the bike about 25K miles ago, the rear brake was dragging and the caliper was rebuilt at that time, too. So, I just ordered a used caliper from EBay and plan to rebuild it and then every time I replace the rear tire, I'll swap out the caliper for the rebuilt spare. I'm definitely not a member of the " If it's not broken, don't fix it " club.
Well, even 120 psi of air wouldn't budge one of the caliper pistons !! I finally got it out and had a good used spare to replace it with. After removing and cleaning the piston seals and dust seals and cleaning out the seal grooves, I re-assembled and re-installed the caliper and bled the rear brake. What a difference !! The rear wheel spins without hardly any drag. The bike seems to have more pep now, too. I did a 55 to 100 mph pull and it ran great.
When I got the bike about 25K miles ago, the rear brake was dragging and the caliper was rebuilt at that time, too. So, I just ordered a used caliper from EBay and plan to rebuild it and then every time I replace the rear tire, I'll swap out the caliper for the rebuilt spare. I'm definitely not a member of the " If it's not broken, don't fix it " club.