The little belt inside the head of the vaccum with the beater bar is not always spinning therefor is melting. Is it normal for the metal pin that it is going around on to get really hot?
The Belt should be changed at this point. This will allow for the proper tension to be on the brush between the motor assembly (metal pin) and the brush so that it spins at the proper speed.
Is it "normal" for the metal pin (motor shaft) to get hot.... not normal, however in the problem you have described, yes it is normal for this situation.
Answers & Comments
The Belt should be changed at this point. This will allow for the proper tension to be on the brush between the motor assembly (metal pin) and the brush so that it spins at the proper speed.
Is it "normal" for the metal pin (motor shaft) to get hot.... not normal, however in the problem you have described, yes it is normal for this situation.
Change the belt and your problem should go away.