[W126 Coupe] The Temperature! (and other stuff)

[Mike R.]

I took the leading and trailing edge of the metalmaster pads and filed off
maybe 1/8" of material at approximately a 45 degree angle, then did the
compound, then did bed the brakes in very much like Zeckhausen
(http://www.zeckhausen.com/bedding_in_brakes.htm) recommended. No joy, no
quietness. When they are stone cold, they're quiet for maybe two stops. A
couple of stop signs or red lights, the noise is back. I used the Noisefree
material and then used the bedding process to bake the compound, but that
didn't get the quiet, so the next day I went out and got the brakes HOT!!
That didn't help either. It might be possible that the metalmasters might
work with new rotors, but I'm tired of playing with the back brakes. 

I've ordered stock pads and new rotors that should be here tomorrow. I'll
have to clean the wheels more often but I want the quiet.

Later,
Mike R.
(702) 494-8056
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of dolans1 at verizon.net
Sent: Monday, May 23, 2005 6:38 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: RE: [W126 Coupe] The Temperature! (and other stuff)

Attila seems to have the only answer so far by grinding the tabs an 1/8 inch
at 35 degrees. Mine squeal so bad after new brakes all around that i am
ready to park it for good...




>From: "Shayegan, Richard" <rishayegan at davidson.edu>
>Date: Mon May 23 20:28:11 CDT 2005
>To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
>Subject: RE: [W126 Coupe] The Temperature! (and other stuff)

>Re the brakes: You're using metal masters and stock rotors right? And you
put anti-squeal paste (I remember Jonathan saying the MB anti-squeal paste
is good) on the back of the pads, and then the shims on the back of that?
Did you then bed the pads in properly? To see what I mean by properly, check
out David Zeckhausen's instructions at http://www.zeckhausen.com/ (they're
on the technical section of the website). If they still squeal...well I
dunno.
>Richard
>
>________________________________
>
>From: mbcoupes-bounces at mbcoupes.com on behalf of Mike R.
>Sent: Mon 5/23/2005 8:32 PM
>To: 'Mercedes Coupes Mailing Lists'
>Subject: [W126 Coupe] The Temperature! (and other stuff)
>
>
>
>OK, I abused several folks last winter when it was -22 degrees and blizzard
conditions in the northeast. Now it's your turn. It's still officially
Spring here in Las Vegas and we got to 105 degrees today. It's the third day
in a row for 100+ readings and we have maybe three days more of 100+
readings. Today was great for me though, I worked at home and never left the
air conditioning. I did verify that the new a/c duct I had run into the
garage made a difference though - with an insulated garage door and the a/c
vent only partially open, it did get to 90 in there, fifteen degrees below
the outside air.
>
> 
>
>I put a new standard fan clutch on the SEC a couple of weeks ago and it is
now running noticeably cooler than the SEL with a stock (original) clutch.
Looks like I'll be ordering a clutch for the SEL shortly.
>
> 
>
>The NoiseFree brake compound I tried on the SEC rear brakes isn't much
better than the Permatex or CRC anti-squeal compound. I bought a set of PBR
semi-metallic rear brake pads for the SEC and they squealed like mad on
there. I put on a thin coat of Permatex on the pads and shims, then a
thicker coat on the pads and shims, then took off the shims and put on a
fairly thick coat of Permatex, but it was still noisy. I tried the orange
CRC anti-squeal compound with and without shims, but no change. I heard
about NoiseFree, that it was "industrial strength" anti-squeal, but it was
not much better and the brakes are still noisy. The NoiseFree guy said that
the lip on the outside of the rear rotors was a part of the problem, then
said the ridge on the inside was part of the problem after I told him that I
had ground off the outer lip and put on a nice layer his compound to no
avail.
>
> 
>
>Rusty didn't refund the cost of the PBR pads when I purchased a set of
Pagid pads, new rear rotors, and new parking brake parts. Not much to like
there either. 
>
> 
>
>Later,
>
>Mike R.
>
>(702) 494-8056
>
> 
>
>
>
>The MB Coupes Website!
>W126 SEC Mailing List
>Postings remain property of MB Coupes, L.L.C.

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Postings remain property of MB Coupes, L.L.C.