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  #1  
Old 02-19-2010, 08:31 PM
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broken timing chain cover

I have an 87 300d turbo that the serpentine belt tensioner broke off from the timing chain cover. I cannot find a cover new or used anywhere. does anyone have any leads on one new or used?

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  #2  
Old 02-19-2010, 08:41 PM
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Where are you located, and how big of a hurry?
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Old 02-19-2010, 08:47 PM
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im in Athens, Ga 30606. I'm not really in any hurry, the car is in my driveway and i have another car to drive.
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Old 02-19-2010, 10:07 PM
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Someone here replaced one, with a new one. Was it gsxr?
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Old 02-19-2010, 10:31 PM
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Quote:
Originally Posted by mplafleur View Post
Someone here replaced one, with a new one. Was it gsxr?

I believe so... He found that the new one was reinforced differently.
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Old 02-19-2010, 10:58 PM
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The newer one has ribs to the tensioner boss.
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Old 02-19-2010, 11:36 PM
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Both new and old-style covers have ribs on the boss. The new style has a major section of beefed-up material in the high stress area. Thanks to gsxr for the wonderful comparison pic.

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Last edited by sasquatchgeoff; 02-21-2010 at 11:40 AM.
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Old 02-20-2010, 07:23 PM
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I think that if you look at the back you will find that it is raised, not beefed. The material thickness is the same (necessary for a proper casting).
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  #9  
Old 02-21-2010, 09:28 AM
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Required reading:

OM603: Freak failure of timing cover. 1987 300D
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  #10  
Old 02-21-2010, 10:23 PM
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Check Atlanta Craigslist

Put in "Mercedes parts" on the Atlanta, or other city's Craigslist. I've seem some diesels in there being sold for parts.
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  #11  
Old 02-22-2010, 07:10 AM
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A new cover is not an unreasonable cost, especially considering the stronger redesign of the part. It was about $150 a few years back. I contacted the parts manager at this website (Phil) and he located the part for me at one of his dealership contacts. It will be a genuine MB part as I don't think an aftermarket part is available.

Did you do any work on the tensioner in the nearby timeframe to the cover breaking? Mine broke after I replaced the tensioner, shock and spring. The shock seemed MUCH stiffer than the old part and I have wondered if that contributed to the break.

Good luck on the part search and repair.

Ken300D
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  #12  
Old 02-22-2010, 07:28 PM
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No work was done to the tensioner, it broke when I started the car in my driveway. Luckly I was at home.

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