Rear brake humming
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Novice
Joined: Jan 2009
Posts: 16
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From: Indiana
Rear brake humming
Hey guys I've been having a little annoying problem with my rear brakes. Every time i come to a stop using my brakes, the rotor starts to hum real loud as if there are worn out brake pads on it or something. Pads are fine so i have absolutely no clue whats causing it. Could it be cheap brake pads? Its an '03 Fatboy fyi.
Ultimate HDF Member
Joined: Feb 2007
Posts: 5,578
Likes: 4
From: Northern California
What you may be hearing is vibration. There is a little clip in there that acts as an anti-rattle device. It could have dropped off when the pads were last replaced. My brakes kind of groaned...but not all the time...usually when cold. You can also remove and spray the back of the pads with brake quiet...let it set for awhile...then reinstall. Some folks also report that a sticky caliper piston causes the problem. Brand new pads may also groan a bit until they wear in...mine did.
Last edited by Dorkman; Mar 14, 2010 at 08:28 PM.
Road Captain
Joined: Jul 2009
Posts: 545
Likes: 1
From: Miami, Florida
I get the same thing, and use Lyndall Pads which are slotted to remove excess dust. Did the insulating film behind the pad - still got rotor sing. Maybe a teflon shim would be more effective?
One friend suggested the rotor is glazed due to excessive heat. It doesn't appear too be, though I'll clean it with some steel wool and see what happens. Last resort may be to disassemble the caliper.
One friend suggested the rotor is glazed due to excessive heat. It doesn't appear too be, though I'll clean it with some steel wool and see what happens. Last resort may be to disassemble the caliper.
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