Saturday, 10 October 2020

Fixing squeaky bike brakes... or not

 I spent the afternoon trying to stop my rear brakes making a screeching sound when fully applied.

The usual reason suggested for the noise is contamination on the pads however, some people say it can also be caused by vibration due to the caliper being out of alignment.

I tried all the various methods that I have read about that people claim fix noisy brakes:

  • Carefully aligned the brake caliper
  • Sanded the pads on a flat surface
  • Cleaned the pads with brake cleaner
  • Soaked the pads in brake cleaner
  • Cleaned the pads with engine cleaner
  • Smeared a thin layer of copper grease on the back of the pads

In addition to the above, at each attempt, I thoroughly cleaned the disc rotor with brake cleaner and a clean paper towel.

None of those stopped the squeak.

The final solution was to replace the pads with new ones. That worked. No more noise.

My conclusion is, that the rotor is easy to clean but if the pads don't stop screeching after a quick sand and wipe over with brake cleaner, they are probably going to need to be replaced.


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