Oh, your Pfaff is beautiful in the black. Please let us know how you get on. I've recently adopted a Pfaff 230 as well and am astounded at how smooth everything is despite 20 years sitting in the garage of the previous owner.
However, I'm having some motor issues. I'll start a new thread about it. Mine has the electrical outlet on the opposite side of the motor from the foot pedal plug, and the motor will not engage unless something is plugged into that extra outlet (where an optional knee pedal would normally go, according to the manual). If I plug a lamp in, the motor hums, and I don't know why. The first try, it hummed and engaged, and now we're down to just humming...
I'm keen to know how your motor sounds when you try it. Good luck with your machine!