99 E 320 Brakes

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rwh - 06 Aug 2006 06:29 GMT

My E 320 has been in good shape for all 115000 miles.One annoying problem-
there is a vibration in the brake pedal when I depress it; this improves
after I powerwash the wheels.Does brakedust cake or somehow build up in the
calipers?

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Richard Sexton - 06 Aug 2006 12:56 GMT

>My E 320 has been in good shape for all 115000 miles.One annoying problem-
>there is a vibration in the brake pedal when I depress it; this improves
>after I powerwash the wheels.Does brakedust cake or somehow build up in the
>calipers?

Something is either loose or not round or both. Warped rotors is in
my opinion the most frequent cause of this.

I tried the ATE "power disk" slotted rotors and swear by them now, not
onlyhave they lasted longer and not spalted badly in the snoe like
all my Balo's did but they do seem to collect the dust in the grooves
like they're supposed to. They not expensive.

Barring any loose metal parts in your suspension I'd say it's new rotor
time.

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Richard Sexton | Mercedes stuff: http://mbz.org
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Martin Joseph - 21 Aug 2006 09:12 GMT

>> My E 320 has been in good shape for all 115000 miles.One annoying
>> problem- there is a vibration in the brake pedal when I depress it;
[quoted text clipped - 11 lines]
> Barring any loose metal parts in your suspension I'd say it's new rotor
> time.

He said that power washing helped his issue. Seems more likely that
it's something hanging like caliper sliding hardware is sticking due to
dust causing the vibration.

Disassembling the caliper sliders and throughly cleaning them MIGHT be
all that is required.

Then again it could just be a warped rotor and you are tripping on the
power washing thing.

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