aeb28

I believe I have a bad transmission mount. Looking for a step by step to positively diagnose and replace for R230 SL600. I haven't found one yet searching, anyone know a good source?

kbob999

Probably one of the easier jobs to do, 4 bolts and a jack, which is why no one bothers with pictures.
This is not an R230, but they are literally to same for many models (722.6 & 722.9) and decades. 4Matic excluded.

https://www.benzworld.org/forums/r12...l#post14824738
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As for diagnosis...it you feel a low frequency rumble from the console area (back of the trans), at certain speeds (60 mph) while driving, that changes under load, then that is one clue.
You can also peek into this area and see if the mount has collapsed, but it is really hard to see in there. Or un-bolt it and take a look.
For $30 you can have the replacement and throw that back in rather than the old one.

My experience is these only last 50-60K miles, and are cheap enough to be considered a maintenance item to replace like air filters.

Rudeney

I have also found vibration when in reverse with the brakes on is usually the transmission mount.

aeb28

Thank you!. I am only getting vibration between 2k-2.5k rpm regardless of speed, which is why I think it might be the trans mount. This looks like an easy job, thank you for the info!