balance shaft problems - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 11-29-2011, 09:44 PM Thread Starter
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balance shaft problems

Have read numerous threads on balance shaft problems. No shortage of people who say they will never buy a mercedes again. There are a hundred or so people in the class action lawsuit. mercedes allegedly made balance shafts with soft metal and the thing wears out at 60,000 miles and this affects like 7 models over 5 years? How is this possible? Mercedes sold 200,000 cars this year. So are there like almost a million cars involved--just in the US? If even 2 percent of these vehicles wears out a balance shaft thats a whole lot of vehicles with $5,000 repair bills--but there would still be 98% of that class of vehicles on the road. So what I want to know is this--If you buy a vehicle in this group what are the odds your balance shaft won't make, oh say, 150,000 miles?
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post #2 of 8 (permalink) Old 11-30-2011, 12:14 AM
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Originally Posted by danl b View Post
mercedes allegedly made balance shafts with soft metal and the thing wears out at 60,000 miles and this affects like 7 models over 5 years? How is this possible?
I'm not a metalurgist, nor do I have any inside knowledge of the issue. But after many years in the Engineering industry, I am aware that things can go wrong when component suppliers deviate (either intentionaly or otherwise) with the agreed specification.

Of course, the ultimate responsibility is with MB who should have devised metal testing tecniques that uncovered this deficiency sooner.
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post #3 of 8 (permalink) Old 11-30-2011, 12:17 AM
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They were not heat treated right.^^


And when you order a million at a time.

Top five reasons I posted in your topic:

1. You're talking about god, there has never been any god of any kind. EVER!

2. I just have a general dislike of you.

3. I am trying to tell you how to fix your Mercedes and you are not listening.

4. I'm flirting with Jody.

5. You're just to dumb to own a Mercedes, and should go buy a Honda.
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post #4 of 8 (permalink) Old 11-30-2011, 07:37 AM
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My dealer is taking it on the chin for this. The service writers told me they have good willed more than their share. AFAIK, the problem "primarily" affects the 350 and 550 engines.

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post #5 of 8 (permalink) Old 11-30-2011, 07:46 AM
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Originally Posted by danl b View Post
Have read numerous threads on balance shaft problems. No shortage of people who say they will never buy a mercedes again. There are a hundred or so people in the class action lawsuit. mercedes allegedly made balance shafts with soft metal and the thing wears out at 60,000 miles and this affects like 7 models over 5 years? How is this possible? Mercedes sold 200,000 cars this year. So are there like almost a million cars involved--just in the US? If even 2 percent of these vehicles wears out a balance shaft thats a whole lot of vehicles with $5,000 repair bills--but there would still be 98% of that class of vehicles on the road. So what I want to know is this--If you buy a vehicle in this group what are the odds your balance shaft won't make, oh say, 150,000 miles?
The lawsuit was thrown out.

ERIC.

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post #6 of 8 (permalink) Old 11-30-2011, 09:33 AM
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I just got reward on class action suit for currency exchange. My check was $18 -I wonder how much the lawyers collected?
I know numerous parts that become substandard in last decade due MB changing the suppliers.
Harmonic balancers, window regulators, washer system grommets, water pumps plastic impellers, hose clamps on PS.
In most cases the same designs on older models work just fine, when new, substandard materials made other series of parts failing.
Still MB takes charge of the situation as we can hear, in some cases they still cover spring perch repairs on 12 years old cars.
What else you can ask for?
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post #7 of 8 (permalink) Old 02-11-2015, 12:34 PM
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balance shaft problems

someone please remimd me of the good years to buy without the balance shaft problem

slk230 & slk320 all years Ok 1998-2004?
slk280 2006 & up good or bad?
clk320 1998-2005 OK? 2006 & up bad?
c230 2004 & 2005 4 cyl OK? 240 & 280 bad?
any 4 cyl is OK?
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post #8 of 8 (permalink) Old 02-11-2015, 08:16 PM
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Any 2006-2007 V-6 M272 based engine could be a problem with balance shaft. If it is 2007 then having the engine number checked could turn out to be just fine. All 2006 M272 V-6 engines are affected,

The 4 cylinder cars have a nasty history with the timing chain because it is a single row chain from the factory.
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