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Brake pad squeal

earlfor

earlfor

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Past Site Supporter
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Charter Member
Well all, I put new pads on the front and rear about two weeks ago, cleaned off the rotors, installed the pads, bled both brakes and everything is fine as far as the brakes working correctly. Now, I have a developed a squeal on the rear brake when I lightly step on the brake pedal. If I step on it a little heavier, no squeal. rear brake works fine, but the noise is driving me nuts. I've tried applying it hard thinking I might wear off what is causing the squeal, but no luck. I'm thinking of taking some 100 grit sandpaper and blocking down the pucks a little, or some rubbing compound and a buffer and cleaning up the rotor. Anyone have any better ideas?

Earl
 
try some of that brake pad spray on the outside of the pads......it works on car brakes very well should be fine on a bike.
 
Thanks, had not thought of that. I'll give her a shot. (pun not intended :-) )

Earl


rick romero said:
try some of that brake pad spray on the outside of the pads......it works on car brakes very well should be fine on a bike.
Click to expand...
 
Brake squeel comes from vibration between the pad and rotor. Usually what I do is polish the surfaces on the back of the pad (the metal part) and the areas on the calipers that come into contact with the pad. Then apply a small amount of white lithium grease, graphite powder, etc. to those surfaces. It almost always does away with that annoying squeel.


Tim
 
That'll be easy enough to do. :-) thanks

Earl


tbarnby said:
Brake squeel comes from vibration between the pad and rotor. Usually what I do is polish the surfaces on the back of the pad
Click to expand...
 
Thanks for popping that question Earl. I'm having the same noise but not for long! Thanks for the info guys.
 
Here is another little trck for you then.
Put a light smear of silastic(silicon sealant)on the back of the pads at instalation time and that stops it happening to begin with.This was standard procedure at the dealership I worked at,and we never had a set come back.
Dink
 
Thanks Dink. Got LOTS of silicone in the shop. :-)

Earl


Dink said:
Here is another little trck for you then.
Put a light smear of silastic(silicon sealant)on the back of the pads at instalation time and that stops it happening to begin with.This was standard procedure at the dealership I worked at,and we never had a set come back.
Dink
Click to expand...
 
There's a product sold under several names that can be applied to the back of the pads before they're installed to keep them from squealing. I used some last year and it worked well. Ask for 'Disc Brake Quiet' at NAPA or any other place that sells car stuff. The one I have is a spray but I've seen it in little squeeze bottles too.

When it dries, it's very sticky and I think it 'glues' the pads to the pistons and that stops the vibration. I'm happy with it.
 
earl, so which one of these many solutions solved the problem?
 
Here is another little trck for you then.
Put a light smear of silastic(silicon sealant)on the back of the pads at instalation time and that stops it happening to begin with.This was standard procedure at the dealership I worked at,and we never had a set come back.
Dink
Click to expand...

I have the same problem -- a very, very loud squeal from my rear brakes -- but it is intermittent. Seems really random. The guy I bought the bike from said he had just replaced the pads -- that was 2,300 miles ago. Anyway, I have removed the pads and reseated them twice.

I've got a tube of ULTRA GRAY RTV silicone gasket maker. Would puttling a little of this on the back side of the pads work??

TIA.

Charles...
 
"Brake Quiet". It works! I used it on my front pads a couple of weeks ago and no more derranged hamsters screaming when I brake. \\:D/
It's a "rubbery goop" that you "paint" onto the back plate of the pad, let it dry, replace the pads and your good to go.
 
For what it's worth, I've seen/heard/had problems with any type of silicone (it essentually glues the pad to the caliper). For years I've used something called Sil-Glide (or Glyde), available at NAPA. Basically, a light weight grease. Use sparingly wherever there's metal-to-metal contact(pad to caliper, caliper sliders, etc...) Never had any problems (my vehicles, or paying customers). In fact, I put in new pads tonight, and that was the first thing I grabbed.
 
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