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Noisy Brakes

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Renton
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PostPosted: 18:35 - 03 Jun 2010    Post subject: Noisy Brakes Reply with quote

Ya know ya hear that high pitched screeching from busses sometimes?

Well my brakes are making the same noise. Has anyone got any advice on how to stop this?
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herulach
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PostPosted: 18:40 - 03 Jun 2010    Post subject: Reply with quote

disk r drum?

My year drum was making a racket, pulled the pads out and scrubbed it out with one of those green scourers doused in brake cleaner. No more screeching.
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Renton
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PostPosted: 18:53 - 03 Jun 2010    Post subject: Reply with quote

Discs.

I don't understand how wearing them down even further would help. The break pads or discs don't need changing so I'm a bit baffled.
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Wafer_Thin_Ham
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PostPosted: 18:54 - 03 Jun 2010    Post subject: Reply with quote

Chalky wrote:
Discs.

I don't understand how wearing them down even further would help. The break pads or discs don't need changing so I'm a bit baffled.


Could be some grit or something embedded into the pad that's causing the noise??
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neil.
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PostPosted: 18:57 - 03 Jun 2010    Post subject: Reply with quote

Copper grease the BACK of the pads. Thumbs Up
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skatefreak
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PostPosted: 18:59 - 03 Jun 2010    Post subject: Reply with quote

As above,
My back brake sqeeks like a bast*rd, jst dont have any copper grease Neutral

-Jvr
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Renton
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PostPosted: 19:05 - 03 Jun 2010    Post subject: Reply with quote

neil. wrote:
Copper grease the BACK of the pads. Thumbs Up


My OH's Uncle suggested this on Sunday, but how does putting it on the back of the pad help?

Also, what is copper grease? / What does it do?




Sorry for all the questions, just interested as I don't know.
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Kickstart
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PostPosted: 20:41 - 03 Jun 2010    Post subject: Reply with quote

Chalky wrote:

My OH's Uncle suggested this on Sunday, but how does putting it on the back of the pad help?

Also, what is copper grease? / What does it do?


One cause of squealing brakes is the pads vibrating. The copper grease on the back between the pads and the pistons stops the squeal when this happens.

All the best

Keith
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fiery tupp
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PostPosted: 22:17 - 03 Jun 2010    Post subject: Reply with quote

Hi im assuming its disk brake not drum thats the prob ? hmmm well it could be the the calliper piston/s not going back in as it should & causing the brakes to bind , if you think this is so take out the pads & pump the brake very slowly while watchin the piston/s so it doesn't come all the way out clean the piston/s & lubricate with clean brake fluid then push it back in you may need a small clamp if using a clamp ( use something between clamp & calliper face to stop it marking it ) very slowly one turn at a time if that doesn't cure it you prob need new calliper seals which means starting the same only pump the piston all out the way with calliper in a carrier bag to catch fluid & piston fit new seals put piston back in all the way refit pads fit calliper to bike & then bleed the brakes , Its not as hard as it sounds maybe an hour or so first time !
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Renton
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PostPosted: 08:28 - 13 Jun 2010    Post subject: Reply with quote

Thanks for all the tips Karma

Sorry to bring this back up, but I can't seem to find anywhere that does the small tube of copper grease as the Haynes manual suggests.

It's Sunday and the local motor shops are closed.

The only thing I'm finding is this from B&Q or Halfrauds which seems to be a spray. Does anyone know if this is just as effective or would it really need to be the tube of viscous grease?
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skatefreak
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PostPosted: 09:40 - 13 Jun 2010    Post subject: Reply with quote

Hey,
I have mentioned i get this myself quiet a bit and am looking to sort it out this afternoon, one question and this may sound rather silly but heck, i dont know lol.

Would autosol work?
Jst a thought

best regards

-Jvr
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SoND
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PostPosted: 11:30 - 13 Jun 2010    Post subject: Reply with quote

skatefreak wrote:

Would autosol work?


No and neither will regular grease. It has to be copper grease because when it heats up it doesn't get runny and cover your brakes like normal grease would.
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neil.
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PostPosted: 16:51 - 13 Jun 2010    Post subject: Reply with quote

Halfords sell copper grease in an aerosol can. Spray some on a bit of kitchen paper and wipe it on the pads.

Edit: Just saw what you posted and that's the exact same stuff I use on my pads, drum brake pivot points and screw threads. Thumbs Up
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Walloper
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PostPosted: 18:56 - 13 Jun 2010    Post subject: Reply with quote

Shite builds up in the holes in the disc.
Get a drill bit the same size as the holes and drill out the shite.
This will stop squealling.

The anti squeal shims should be in good condition no perfortation that permits the pad backing to rest on the piston/s

And a smear of copper grease on the backing too.

The idea is to put a 'dissimilar' material between the backing plate of the pad and the piston/s.
This prevents resonating forces being transferred from pad to brake mechanism and being amplified by the front end etc.

If no solution then try a change in the pad material for some other compound if you have kevlar (Organic) then change to sintered (Metal) or vice versa.
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