Disc brake problem. MTB

Celticfire

Hi, quick question.

The rear brakes on my bike were squealing like a dying hog and sending vibrations up through the bike which make for an annoying and uncomfortable ride.

I changed the pads and realigned the calipers , gave the disc brake rotors a light sanding with fine paper... but the sound was still there.

I then swapped wheels with another bike , sound still didn't go away.

Any suggestions??

Cuddlesworth

Oil on the pads or disks?

ravendude

If you got the disc doused in brake fluid you could have contaminated the second pads.

Try swapping the front pad to the back with the new wheel to rule out contaminated pads.

If you wore right through the pads before you might have knackered the piston.

What brakes are they? Some just aren't much good to be honest and you get that kind of thing.

sebastianlieken

probably oil or grease on the disk and/or brake pad.


OR, fill a bucket with hot water and fairy liquid and chuck the pads and disk in, give them a good soak and a good scrub

raid your first aid kit (or liquer cabinet) and get some alcohol to clean the grease off. be genourous with solvent.

take a lighter (or use a gas hob) and burn the contaminants off. They can go red hot no problem, just do not quench them in water. let them cool off naturally in air.

you can do all of the above or any of the above if oil is the problem.

HOWEVER, you said there were vibrations coming from the wheel when you brake. EITHER, the disk is warped, or the pads are toe'd in.

Karma

check your bolts or centre lock, mate came to me as the back wheel locked up at the end of his ride- some bolts missing

John_Rambo

I had the exact same problem.

Solution, take the pads off and sand them with sandpaper. Brand new.