John.
Did you get your parking brakes adjusted ok? I also have a 1993 600SEL, and the parking prake system works ok, just not enough stopping power to pass inspection. I read the alldata adjustment procedure for the rear, center adjuster and will be trying that next weekend (Xmas 2011 today). If I have to, I will replace the inner parking brakes shoes, but hopefully not. Any suggestions?
thanks
wmercer@cox.net

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Bill & Monika Mercer