[Shop-talk] Squeaky brakes

[eric at megageek.com]

OK, I'm at my wits end (it's true that was my STARTING point, but still)

I bought a new (to me) 2007 Mercedes GL450.  It's in great shape, garage 
kept and clean.

After a week or so, the brakes make the typical squeal when applied 
lightly after a longer trip.
So I checked all the pads. They were almost brand new.  So I blew them out 
with air (note, I didn't disassemble them at this time.)
Another week so goes, squeal get worst.  Drives my crazy.

Last night, I pulled apart each wheel, cleaned everything.  I added CRC 
Anti-noise goo to the back of the pads, cleaned the caliper pins and 
applied permatex caliper pin lube to them.  Finally, I placed a bit of 
never-seize silver goo to the matting points of the pads and calipers 
(After wire brushing the surfaces to clean them.)

Blew everything clean and reassembled.  This morning, I got a little 
squeal after my 50 min commute to work.

WHAT CAN I DO NEXT?  I hate brake squeal, and it kills me when I do so 
much work and don't get any real results.  What am I missing?

Should I try to 'rough up' the pad surface? And if so, what is the best 
method to do this?

Thanks.

Sent from my Commodore 64 on a 2400 Baud Modem.
Tech Viper
"Be as beneficent as the sun or the sea, but if your rights as a rational 
being are trenched on, die on the first inch of your territory." Ralph 
Waldo Emerson 
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