Hello everyone, im here again.

So as i said, i totally rebuilded my front and rear brake systems, but i have one problem: the front caliper now scratches the disc. I really dont know why is happening this, as i mounted everything as intended, i have the service manual and i followed it step by step. I attach some pictures.

This was my first time doing this job, so maybe i skipped some important fact that i didnt know.

Thank you and have a nice day.

If those stationary parts are scraping the disc, then the two pistons are not extending out enough. Have you pumped the lever to extend the pistons before riding?

Yes, i pumped up all the air out too. The brake seems to work just fine, it stops the bike but idk that part touches the rotor.

Then I don't know. I've only replaced the front pads and disc once.

Maybe wait till more experienced owners chime in.

if the stationary part is rubbing the rotor, then the rotor offset is wrong.

Try with the original rotor, to see if it rubs.

If you have a micrometer, set the original rotor on a flat surface and measure the distance from the outside of the rotor to the table surface, then subtract half the rotor's thickness, this is your offset measurement. Take the same measurement on the new rotor. Make sure it's exactly the same number.

Quote from: mr72 on September 06, 2022, 03:30:41 AM
if the stationary part is rubbing the rotor, then the rotor offset is wrong.

Try with the original rotor, to see if it rubs.

If you have a micrometer, set the original rotor on a flat surface and measure the distance from the outside of the rotor to the table surface, then subtract half the rotor's thickness, this is your offset measurement. Take the same measurement on the new rotor. Make sure it's exactly the same number.

It is not the stationary part, is actually the caliper that slides in the stationary part wich causes the problem

EDIT: Actually, i was wrong. It is the stationary part, and i found the culprit of the problem: the actual bearings of the wheel where displaced a couple of milimiters to one side, making the wheel closer to the caliper, making this one touch the brake rotor.