Excellent job, you make it look so easy! Your house looks a lot like the house that the seller that I imported an Electrolux upright from lived in.
I don't see anything wrong with that motor, it looks like where they torched the leads onto the connector block/heatsink and soldered it on. If the motor was burning you'd smell a sickly sour smell of the lacquer burning off the windings and your electricity would likely crap the bed. You'd definitely know if it was that badly off. They are definitely wrapped in some kind of banding sleeve to keep them from touching each other's coils.
That commutator would be very happy with a good polish from a fiberglass pencil tho.