Strange grinding on one disc

[Tigger]

I am getting a very loud scraping & grinding noise when slowing down, moving in traffic (0-10mph) and most of the time when I brake at 30mph (town driving) :S

I have noticed on my N/S front disc there is a mark, like a ring about 1cm thick of "fresh wear", on the circumference of the disc. You can see this clearly through the spokes.

All the other discs seem to be fine.

It has only started doing this on Tuesday - the car flew through her MOT on Monday evening so I'm very confused as to what this is lol

First guess was dirt/grit on the pads - have tried blasting some brake cleaner in there already, it helped for about 5 miles.

Any other ideas?

Cheers
Trev

 

[MAXIBOY]

worn pad on that side of the disc. often wear the outer edges first.

mot doesn't check pad wear/thickness..

 

[SkidMarx]

Sounds like the pads worn down to metal. You'll need New discs and pads

And MOT testers can fail pads that are less than 1.5mm

 

[Tigger]

MOT passed on Monday and the pads were ok lol

 

[iimushroomzii]

Stone or something stuck in the disk? Whip the wheel off and have a look

 

[Tigger]

How do you go about taking the caliper off to check/clean the pads?

 

[santoz]

good socket set!

bolts are on back of caliper, should be two to remove if i remember.
also advisable to put a bit of tread lock of the bolts when your putting it back together!

 

[Tigger]

Ok cheers!
Tread lock? :S

 

[Ex-User (19928)]

Wouldn't bother with locktite or anything like that, you're only making more work for the next time you take them off. As long as you do them up tightly they'll be no problem.

 

[Tom@JMS]

Sounds like a stone or something similar in the pad, either that or the pad is wearing unevenly and the lead edge is scoring the disc. Get the pads off, that will probably reveal the problem.

 

[Tigger]

Are there any other bolts on/around the caliper I need to undo to get at the pads?

 

[SkidMarx]

That is a pad worn down to metal!! As said previously!

 

[Tigger]

Must of been the "victory drive" after getting out of the MOT the previous day then

 

[sideways danny]

worn pad down to metal. might get aways with just pads if you change them IMMEDIATELY, but look at the back of the discs before you do that. the back side of the discs always wears first on clios

 

[ben_p]

bad times

 

[Tigger]

New discs & pads are ordered 2 weeks ago anyway

 

[stewart]

Heap of scrap trev, should just give the car to me for £100 and get it off your hands!

 

[Tigger]

Pads alone are worth £100 on these motors lad

 

[Jonny1*2]

Check out the guide section mate. lots of ones on front discs. Strange that it is only doing it at the edge. Take them appart and have a look. Don't leave them too long like i did, ended up with rust all down the side of the car and nearly completely ruined my alloy.

 

[sideways danny]

Pads alone are worth £100 on these motors lad

not in that condition

 

[Tigger]

Cheers Jonny - will have a gander tonight after work and attempt it in the morning

not in that condition

haha Brembo HC & DS2500 from K-Tec on the way

 

[box car willy]

Cheers Jonny - will have a gander tonight after work and attempt it in the morning



haha Brembo HC & DS2500 from K-Tec on the way

Oh?

K-Tec are not advertising Brembo HC's anymore

 

[Tigger]

You sure?
http://www.k-tecracing.com/show_product.asp?id=2772

 

[pete_clio]

Pads alone are worth £100 on these motors lad

where the hell are you buying pads from? (and i dont mean pointlessly expensive ones that you dont need since you drive like a granny anyway)


you = amature.

 

[Tigger]

EPIC FAIL on my part

FAIL to understand WTF happend the brakes :S

Passed MOT Monday evening and the disc was fine - Tuesday morning my disc was like it was in those pics :S

Explain that oh almighty one! lol

 

[Gobsheene]

You borked them Trev, simple as!

Pop the caliper off and check the state of the pads.

Took mine off at the weekend and the insides were fucked, propperly fucked, braking surface was down to about 3/4" on the disk!!!

Will attempt to get pics up soon.

There are little metal retainers that hold the pad into place on the caliper itself... they're about the size of that score, check one hasnt came loose and rubbed the disc.

That looks too clean a score for the pads to be down to the metal.

 

[Tigger]

Pads were checked pre-MOT and was told by Renault and a reliable mechanic they had at-least 10k left on them

Going to have a look in there shortly as I'm off today

 

[Tigger]

Got into the caliper yesterday evening to find that the outer pad was wafer-thin and the inner pad was fairly healthy :S

The inner (healthy) pad was a bugger to get out of the carrier - rubber mallet job lol

Started by giving everything a good clean with brake cleaner & wire brush
Had the car on 3 wheels only to realise me & my mate hadn't got a file between us to fit the new pads so I'll be doing that today - oops!

 

[Gobsheene]

Well at least they dont look like the ones that came off mine!

 

[adam1942]

mate if u didnt get this sorted give me a shout - I replaced the pads on my clio at the weekend and will give u a hand its an hour job with simple tools.

adam.

 

[Tigger]

I got mine done on Thursday Brembo HC's & DS2500's FTW!

 

[Gobsheene]

Tis simple as long as there not seized! then its a b*****d!!

 

[Tigger]

Yes but it's French, therefore feckin awkward anyway! At least that's my excuse :rasp:

 

[Jonny1*2]

were the carrier pins siezed tigger? seems wierd that the inside pad was fine and the outer was completely gone. should be the other way round with the wear of them really.

 

[Tigger]

Yeah, I was told that too before I even had a look at them.

The pins seemed to be alright, the inner pad was stuck firmly inside the carrier on the pictured disc above, had to take the carrier off and whack it with a hammer lol. The outer (worn) pad just came out freely.

Made sure all 4 new pads on each side sat in freely when fitting the new K-Tec kit

All seems well so-far and not a squeek out of them at all :star:

 

[adam1942]

class good going

 

[Tigger]

I've had the new pads fitted now for about 4 weeks now and they have been fine.

Started squealing today when coming to a stop/sitting in traffic :S
How?

 

[Tigger]

^ Is this normal for the Ferodo's?

Do they need the edges filed down another touch or what?