W202 brakes,pulsing

[bennesspipers]

I'v noticed that i can feel a slight pulsing on the brake pedal,& the car vibrates under braking. I'v had the front calipers off & checked the discs,both perfect. Also tried putting handbrake on hard which has eliminated its not the rear brakes causing it. Any one got any ideas ?

 

[chitaxmoto]

bearings maybe, check for play with wheel up

 

[stevesey]

Handbrake doesn't prove much as that uses a small drum in the centre of the rear disc and not the discs/pads themselves.

Assume you checked for any run-out/high spots on the front discs when you had the wheels off? Although less likely I'd check the rears as well.

 

[bennesspipers]

I just did a visual inspection,no ridging,both front discs look quite recent replacements & are genuine MB, I'll check front wheel bearings first, & then have a look at the rear discs, thanx

 

[bennesspipers]

Found the problem, rear discs shot !

 

[ShaunB]

Old thread revival I know.

Does this mean the rear discs are warped or something?
I had a pulsing in the pedal, got new front discs/pads fitted (CLK55), still have pulsing.
I suppose I should have had the rears changed at the same time.

I presume with the pulsing, it has to be brake related?

 

[BlackC55]

Yes, or a suspension arm.

Were the hubs cleaned properly when the discs were changed?

If the vibration is through the steering wheel its the fronts. Through the seat its the rears.

 

[ShaunB]

Hi, thanks for replying.

I saw the mechanic clean the hubs with some kind of wire brush?
he then applied a little copper grease round the hub centre.

There is no vibration in steering wheel, pulsing only through pedal and you can feel the car pulse obviously.

 

[BlackC55]

The hubs need to be cleaned up with a flap disc https://www.google.co.uk/search?q=f...nms&tbm=isch&sa=X&ei=cGlKVLi_EYzX7QaxrYDQDw&s
qi=2&ved=0CAYQ_AUoAQ&dpr=0.95

If not the discs will warp. Were the brakes genuine or aftermarket?

 

[BlackC55]

It could be the rears though too.

 

[ShaunB]

The hubs need to be cleaned up with a flap disc https://www.google.co.uk/search?q=f...nms&tbm=isch&sa=X&ei=cGlKVLi_EYzX7QaxrYDQDw&s
qi=2&ved=0CAYQ_AUoAQ&dpr=0.95

If not the discs will warp. Were the brakes genuine or aftermarket?

Genuine discs/pads/wire from MB.
The pulsing was there before the front discs were changed.

 

[ShaunB]

MB don't have any discs or pads in stock.
Any comments on pagid discs/pads

Cheers
Shaun

 

[markjay]

Best to buy MB (as others said).

But if you can't get MB, then Pagid discs are very good quality.

 

[ShaunB]

New rear discs/pads fitted.
Pulsing pedal now gone