Repair disaster #2 ...
My front disc brake kept "locking on"; I reset pistons and recentred the brakes, but after a while it did it again (x3 or 4 repair attempts!). the brake lever felt really "tight" - no modulation. Not unsafe but annoying and clearly not right.
So I bled the brakes, and tried to lubricate the pistons with brake fluid, pushing them out a bit as per online videos. I think herein lies the problem! the brakes are now squealing, I've tried all the online hacks I can find, sanded pads (a few times) and cleaned rotors. It's ok for a few minutes then the squealing starts again. The modulation now seems ok but the squealing is terrible - presumably contaminated pads.
Should I try to ride for a while to see if it "beds in", will a new set of pads sort it, or is there likely damage to the piston seals from my hacking around that only a new set of brakes will sort out?
Many thanks
Paul.
My front disc brake kept "locking on"; I reset pistons and recentred the brakes, but after a while it did it again (x3 or 4 repair attempts!). the brake lever felt really "tight" - no modulation. Not unsafe but annoying and clearly not right.
So I bled the brakes, and tried to lubricate the pistons with brake fluid, pushing them out a bit as per online videos. I think herein lies the problem! the brakes are now squealing, I've tried all the online hacks I can find, sanded pads (a few times) and cleaned rotors. It's ok for a few minutes then the squealing starts again. The modulation now seems ok but the squealing is terrible - presumably contaminated pads.
Should I try to ride for a while to see if it "beds in", will a new set of pads sort it, or is there likely damage to the piston seals from my hacking around that only a new set of brakes will sort out?
Many thanks
Paul.