Question on replacing front wheel bearings on W123

[pinpoint]

Greetings and happy new year.

I believe I have a noise which is due to a bad front wheel bearing on my '85 300TD. From what I have found in researching on the web shows that the disc needs to be separated from the hub when replacing the bearings. I'm wondering if that is indeed necessary. The rotors are ok at this time so I'd rather not mess with cranking on those rusty bolts that couple them to the hubs if I don't need to.

Can anyone confirm that the bearings and seals can be replaced without separating the rotors from the hubs?

Appreciated,

Jeff