Hello SAS7even,
I've just noticed your post. Shame I didn't see it before.

It seem that I have the same problem.
First I disassembled the gear unit (see my other post in this forum).
I was sure that the loud noise was coming from there but I actually rushed ahead and didn't check the electric motor.
Anyway...
This time I removed the motor from the gear unit and run it.
It made a loud noise like bearings were completely worn out and even it smelled of burning. I've taken the motor out but I've still didn't open it or take it to a specialist.

To answer your question; the electric motor is listed in the catalog as one part under part number 827702 for 3040M.