Squeeling brake help please we

[MinnBobber]

My Crea brakes were fine and then dvlped huge squeak after sitting unused in hot Calif garage for a months.
Me thinks slight front brake fluid leakage from the heat contaminated front pads and rotor.
I have cleaned rotor multiple times and no help !

Was hoping new pads would cure it but one mechanic said it absolutely needs rotor AND pads!
Can that be?

The howl/ squeal it at a monumental volume and the most piercing and painful pitch composition you could ever imagine!

The whole carbon fiber bike frame vibrates like a 1000watt electric instrument of a touruous tone.

At my brother’s house, I rode the bike halfway down the block, applied the front brake and it did the howl. My brother commented how obnoxious it was even though they were in the house!!!

What do I need to fix?
Any suggestions on where to have it done in San Jose, California?
Going out there in a couple weeks,

Thanks for your help

 

[fooferdoggie]

unless the rotors are worn out, you can sand them, and that will remove any contamination. though sometimes they can be overheated, and that will mess them up. but that happens on long downhills and hard breaking on on our heavy tandem. should be able to have someone swap pads and sand the rotor or learn to do it yourself its not hard.

 

[teskow]

Clean the rotors well as they must be completely free of any oil film. I don't know how you can do that. I did not try scrubbing with 409 and rinsing with water but it is a good degreaser. Brake Clean may do it. You must put in new pads because the old oil contaminated ones can't be cleaned. I even sent them through the dishwasher a couple of times, they looked dry and oil free as a bone but still squealed.

 

[PCeBiker]

Pure Acetone works Awesome to clean rotors and pads, But Don't Get It anywhere else on your ebike !!
Remove your pads from your calipers to clean them.

It eats paint and dissolves rubber.

(Nail polish remover has acetone in it but it's watered down and may have lanolin in it to keep your cuticles from drying out.)

I've cleaned brake pads from my car with acetone. The pads were soaked in oil.
It cleaned them up nicely and I reused them.
(Brake pads for your ebike are relatively cheap though. Resin pads are known to be quieter than metal or sintered pads, but they don't last as long and can't deal with extreme heat as well as metal pads.)

The acetone doesn't damage the "glue" that bonds the brake pad material to its metal backing plate.

The customer in this video sprayed his brakes with WD40 because they were noisy.