SweeneyD24

I have a bad calliper, it's Ioose and makes clunking noise over bumps. My guess is that it's hitting against the inside of the rim. Even the slightest bump is enough to make the calliper noisy.
The slider pins are fine. I swapped those from the good (right) one to the left one. Same result.

I was told that the slider pins have a tendency to 'wear out' the callipers, i.e. the holes in which the pins are located become loose over time. Why and how, i don't know.

So my question is:
Can the 'loose hole' in the calliper be repaired?
Like for example, fill in the holes and then drill them back again so that the pins will fit perfectly. I was also told that it had to be a very precise job.

tjts1

Maybe but it's cheaper and easier to replace the calipers.

SweeneyD24

These kind of spare parts are hard to come by where i live, if not, far too expansive!

Thanks for the response.

efzauner

so what is moving? You are describing a sound that occurs when you drive. Is there play when you remove the wheel and inspect the brakes? Front or rear? How do you know it is a brake problem when driving and not a suspension worn arm/rod/ball joint bushing problem?

Russell Ormerod

And also check wheel bearing play, pack the pins with grease see if it quietens the noise.

SweeneyD24

It might be the calliper hitting agains the inside of the rim. I don't really, i don't really have the proper method to experiment with. Yes, the noise occur over even the slightest bumps. There is a bit, not that much though. I did remove the wheels and inspect the callipers a couple of times. Since i don't really have that much experience, i couldn't tell for sure. That would be front. I came to the conclusion that it was the calliper by the distinct sound it's making. It's more like a clink clink sound. Then again i wouldn't be able to tell for sure if there are issues with the arm/rod/ball joint bushings. One thing though, i did take the car to a mechanic and he had a quick glance at the front suspension. He told me everything was fine. He didn't check the calliper though.

Thanks for the info.

SweeneyD24

Is that something i can achieve with the bare minimum tools?! I'd like to DIY before going to the mechanic?

Appreciate the help.

SweeneyD24

Also, i'll be replacing the rear shock absorbers very soon. Any suggestions? What about coilovers?

C230 Sport Coup

Since I replace my own brake pads etc.
once I noticed a noise and a front calipers was loose.
Pulled the wheel, reached around and the tightened the bolts,
all done.
Moral of the story is to use locktite, but I didn't.
But I should have.

SweeneyD24

Which bolt exactly did you tightened and where did you use the locktite? The caliper frame?
Anyway, i'll have a look during the weekend.
Thanks.

C230 Sport Coup

Backside of the hub, where the caliper bolts to the vehicle.
2 bolts. 17mm ?

Russell Ormerod

Torque them 100nm they will never come loose

SweeneyD24

Thanks for the tip.

C230 Sport Coup

[QUOTE=Russell Ormerod;7376920]Torque them 100nm they will never come loose[/QUOTE
Indeed, indeed!
And locktite blue just to be sure.

SweeneyD24

[QUOTE=C230 Sport Coup;7377623]Thanks guys. Really appreciate the help.

On a side note, my dad just replace both rear Stabiliser Link Bars on his W203. Most of the rear noises disappeared. One of the bushings was gone. I was thinking of changing the bushings on both Link Bars and putting them on mine.
Can i re use the link bars or should i replace them with new ones when the time comes?

SweeneyD24

I saw these 2 17m bolts! They were super tight!..not loose at all. I really couldn't find anything loose.

SweeneyD24

I finally went to a garage specialised in suspension yesterday. A friend of mine actually.

I change the rear suspension, front stabiliser link bars and the front sway bar bushings. Tested the car today and ALL the noises were gone!!! It looks like the stabiliser link bars or the sway bar bushings were the culprits.

The ride feels really smooth and comfortable now.

Thanks guys.