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How do you relace a driveshaft 1973 450SL?

Updated: 8/18/2019
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13y ago

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There are two flex disks that connect the drive shaft. I believe there are 5 or 6 bolts on each disk that you have to remove. Then the drive shaft should slide out through the rear. Most likely, you'll have to replace these disks...always replace both of them.

BTW, unless the drive shaft is broken, these are normally not replaced. They're pretty bullet proof. The flex disks are what are normally replaced. You can feel them vibrate the drive train, especially under a load, or while driving up hill. When this happens, on a severe situation, you think the rear end is about to fall out...it can drive you crazy. Also, check the half-shafts...check the rubber boots. If they're cracked or broken, chances are they have expelled all the lubrication...and they might need replacing as well.

Replacing the flex disks can be a real pain...be patient with it...the drive shaft will eventually slide out. Also, check the rubber muffler hangers while you're down there...they usually require replacing every couple of years.

Also, remember this car was designed years ago by the Germans who tend to over engineer everything...these rear ends are as close to bullet proof and built like a tank...check the rear end fluid level too.

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Q: How do you relace a driveshaft 1973 450SL?
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