diff noise

[reg]

Looking for some input,  Am having a differential noise that sounds like a pinion bearing.   I just replaced the drive shaft center bearing and that help a little.   Hoping for ideas as to the cause and possible remedies.   The car is a 1966 230sl

[DaveB]

I guess you have already tried it but can you get any movement pushing on the yoke? It should be all solid.

[reg]

Thanks for the input   am going to check on the condition of all my bushings first.  Maybe I missed one and the noise is just transferring to the body.

[DaveB]

Yes if that central rubber mount in the trunk is bad you might get metal to metal contact.

[Benz Dr.]

When are you hearing noise? While driving under load, under no load, or while coasting? Each one of these conditions often means you have a different problem to fix. Noisy rear axles are often best fixed with a replacement axle. They're not easy to repair, time consuming to R & R, and repairs will not always be successful.