Tried and tested fix for brembo squeel

[Davezj]

Hi all,

just thought i would pass this on to you guys and girls. this is a possible fix not confirmed. it could be the mintex 1230 pad or it could be the grease. i don't know.

Try running a bead of copper grease down the edge of the pad that contacts the pad slide plate on the leading and trailing edge of the pad. i did this at the last pad change and i have no squeal at all.

Here is a little warning, do not get any copper grease on the pad friction material at all. be careful.

Pad Make:- Mintex 1230 (pad choice was a stop gap as i had a part warn set not ever used with my disk)

Anti squeal shim:- 1 full + 1 diagonal Half shim (full shim against pad the half shim on piston contact side, take note of direction arrow)

I applied small smear of copper grease on pad back and on shim to shim contact area.

Applying copper grease to edges of pad:-
i did it this way, but thinking about it now, it might not be the best way of doing it.
1. Back of the pad facing up with shims already fitted.
2. copper grease on finger and pull finger backward against the leading and trailing edges of the pad so you scrape the a small amount of grease (and i mean small amount) from your finger on to the edge of the pad, this puts a nice bead on the edge of the pads metal backing.
3. Slide pads into caliper carefully and put pins in.

a better way of doing it would be to smear a little bit of copper grease directly on to the pad slide plates on the caliper.
to be sure you don't get it on the friction material of the pad.
don't use lots of copper grease, just a little smear.

then fit the pads as normal.

if you have brembo brake squeal and you have the pad sliders in place, give it a try and report back to see if it makes a difference for you.
this costs nothing to do, only a bit of time. it could restore you sanity.
slider are held on the caliper with screws and are on the leading and trailing edges of the Pads.

hope this works for you.

[adaxo]

Sorry Dave but your description is way to long for me to understand this properly, what you mean is, smear some copper grease between this metal thingy and pad OR where is metal thingy touching pistons??
I'm just on the brakes atm so I was thinking about get rid of squeaks while I'm on that

[psbarham]

oh what you mean dave is fit them properly, , i do it this way every time and the bastids still squeal, the only cure so far is PF11 pads and grooved discs.

[swinks]

My find is... rubber-like padding in a back of the pads plus shims. This is factory fitted by EBC, but not by Mintex, so you will need to purchase any set of universal adhesive stuff.

[Davezj]

oh what you mean dave is fit them properly, , i do it this way every time and the bastids still squeal, the only cure so far is PF11 pads and grooved discs.

mine don't squeal at all and i have plain disks and mintex 1230 pads, they work great.
and it is a very cheap option, the disks were from camskill £80 ish and the Mintex 1230 pads are not expensive, well i don't think so.they are expensive.

but i do a quite a harsh bedding in process as recommened on the brembo web site, as you should do.

[Davezj]

yes i think my description is making people miss the point.

as far as i am aware it is not the norm to grease the leading and trailing edges of the pads metal backing. and it is this that i am proposeing.
if this greasing the edges of the pad backing metal does not fix anything, then i can say that from my experience the mintex 1230 pad material can be used with no squealing.

i have seen brembo calipers that don't have the slide plates fitted. which can't help.

i will try and find a picture of the slide plate in place to make it a bit clearer.

P1010124 (1024 x 766)with arrow to slide plates.jpg

ii have red arrowed the slide plates. These slide plate are made of stainless steel (i think) and screwed to the aluminum caliper body, the are there to protect the caliper body from the pad itself and to aid in the silde of the pad in and out with the pistons.

hope this helps.

[CANDEE]

Some people have found replacing the slide plates has stopped the squeal as well.

[Oggie]

the noise my breaks make is driving me to become charles manson.

i have noriced since having my pads and disks replaced with new ones is the sqeualing was really really bad. has started to slowly go.. no does not make noises under hard breaking at all. only at lower speeds now.

is this a breaking in period?

[CANDEE]

Really depends on the quality of the discs and pads Terry, cheap discs can squeal quite badly....

[Davezj]

I say again,
i have cheap disks and cheap ish pads and no squeal at all.
This is the point i am trying to make.

[Oggie]

mine were finally fixed,

watched my mechanic take em out and use sandpaper to break the smoothness ( almost glass like ) of the pads.

beeen good ever since

[adaxo]

I found something similar recently, some days ago I need to stop VERY quick, literally stand on brakes, so brembos got a chance to show what they are worth and after that squeal has gone for few days and then go back so I breaking hard (lest say from 70mph to near 0) deliberately this time and squeal gone again, result.

[Davezj]

The issue people might be having is apparently new disk don't only come with a grease coating they come with a thin zinc plating applied to them which is the yellowey rainbow coloured stuff, this has to be removed before hard braking is done.
It is recommended now that you drive the car braking regularly but lightly so you do not get any heat in to them. You will be able to see the bright steel disk material once the plating gets removed. The light braking with no heat is suposed to stop the zinc plating getting embedded in the pad and disk surface.
Once you have done this then the normal bedding in process can be done.
http://www.brembo.com/en/car/Racing/...20CATALOGO.pdf
Page 19.

[Davezj]

Update:-

After what seems to be an age, my brembo brakes started to squeal. It did not bother me so I left it like that for a while about a month or so. It squealed every time I put my foot lightly on the bakes and with medium pressure, only really hard pressure would stop the car without a massive squeal.

Today i decided to have a look at them, there is plenty of meat left on the pads, and the disks still look good.
So I stripped the fronts down, the copper grease that I had applied to the pads and calliper had all dried up. Which is not surprising as I greased them with copper grease last time before I went to japfest II this year. So I greased them back up with copper grease, doing the follow points,
1. Back of pad
2. Back of first full size anti squeal shim
3. Back of second half size anti squeal shim where the piston will touch.
4. On the edges of the pads metal backing material
5. On the slide/retaining pins
6. In the holes on the pads where the pins go through
7. On the retaining springs where the pins push against.
8. Slid plate on the calliper where the edge of the pads sit.

As soon as I drive off the squeal has gone completely.
I will keep you posted if the squeal return or stays away for good.

So, greasing the pads, shims, pins, and slide plates up fully stops brembo brake squeal, well it does for me, which is nice.

[WOODY72]

My Brembos only squeal in reverse, so you guys are obviously fitting them backwards.

[Davezj]

My Brembos only squeal in reverse, so you guys are obviously fitting them backwards.

Mine used to do that when I had original brembo pads fitted, they had a forward rotation arrow on the back of them to show which way the disk should rotate with forward motion with reference to the pads postion. They never squealed when going forward.

[Nick Mann]

Mine have never squeeled. Well, since using Performance Friction stuff. Previously various things worked temporarily or not at all. I have had only squeeling in reverse, only squeeling on light braking and squeeling like a wailing banshee if the brake pedal was even looked at!

[Davezj]

Just another update,
Brakes are still squeal free after lots of rain and intermittent use and some motorway driving about 300 miles.
I will keep you all posted.

Cheap pads a disks all round (which was a known squealing setup) no squeal this has got to be good. Let's hope it lasts 6 months or so at least.

Let there be hope for everyone.

[fassi1]

Greasing did help for me too but i did use Mintex anti squeal grease rather than copper grease.

[Nick Mann]

On Performance Friction (did I mention they don't squeel?!?!?!!!! ) they advise that you don't use any grease/copper/anti squeel stuff, just make sure everything is clean prior to fitting.