W123 rear hub bearings servicing/longevity

[Marcan82]

Hi all! Hope all is well wherever you are.

There is very little information in our forum regarding servicing of these bearings. Is that because it's a dreaded job to do? Does anyone have experience in doing this job and how often should it be done?

For some reason it's kinda plaguing me as I have no history of this ever being done. Car has 137K miles and no noise or other symptoms that would cause me concern.

Thanks!