Author Topic: Squealing brakes  (Read 259 times)

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Offline Redlion61

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Squealing brakes
« on: June 19, 2019, 01:18:02 pm »
I am a bit stumped on this...

New rotors up front. Relatively new front pads (less than 2000 miles on them). Rotor on back good, pads about two years' use. Inspected by motorcycle mechanic, told all are good (minimal wear).

When I leave in the morning, first few stops are fine, after a while, they squeal when I brake down. When I leave in the afternoon (and the weather's warmer), I give pedestrians heart attacks (and get strange glares from cagers running with windows down).

I have blown dust out from the brake assembly with the air compressor, but the problem remains.

Any ideas? I ran my 2012 C14 for years and this issue really started late last fall...
Chris Dupuis
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Offline Jim

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Re: Squealing brakes
« Reply #1 on: June 19, 2019, 01:42:44 pm »
The noise is caused by the pads vibrating in the caliper. There are various ways to stop the vibration, from metal shims on the back of the pad to spray-on stuff, and I don't mean brake cleaner. Most of the time these remedies will either stop it or greatly reduce the noise.

Offline MtnRider

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Re: Squealing brakes
« Reply #2 on: June 19, 2019, 02:14:39 pm »
Brake & Caliper grease. This shows where to apply: https://www.google.com/url?sa=i&source=images&cd=&ved=2ahUKEwjM7beo6vXiAhWCiVQKHbB_CtMQjRx6BAgBEAU&url=https%3A%2F%2Fwww.super-lube.com%2Fbrake-grease-applications&psig=AOvVaw0VixksZhAbsoXJnhFDRlpd&ust=1561043492599646

Any auto parts store will have it. It's a high heat resistant grease so it won't melt and flow onto the friction material or rotor. Use a very small amount. A little on the back of the pads where they contact the pistons should help a lot.
2015 Black C14
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Offline MAN OF BLUES

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Re: Squealing brakes
« Reply #3 on: June 19, 2019, 09:33:23 pm »
Brake & Caliper grease. This shows where to apply: https://www.google.com/url?sa=i&source=images&cd=&ved=2ahUKEwjM7beo6vXiAhWCiVQKHbB_CtMQjRx6BAgBEAU&url=https%3A%2F%2Fwww.super-lube.com%2Fbrake-grease-applications&psig=AOvVaw0VixksZhAbsoXJnhFDRlpd&ust=1561043492599646

Any auto parts store will have it. It's a high heat resistant grease so it won't melt and flow onto the friction material or rotor. Use a very small amount. A little on the back of the pads where they contact the pistons should help a lot.

have not had this issue, but when I did my new EBC's, I did "scrub" the rotors... if you wash and wax your bike constantly, the soapy water does contaminate the rotor, and pads.. removal, sandpaper cleaning, spraying with brake Kleen, and reassembly helps stop "squeel"
as or applying tha "dampening grease", I do this also, but putting it on the pad, is a robust and wasted amount, and subjects it to migration... simply dab it on a fingertip, and smear it on the annular cup face of the caliper piston, then install them.. use no more than needed, as it can migrate.

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