12/08/2017
Another possibility for a hot vacuum cleaner motor: The brush roll is being prevented from turning easily. A large obstacle is caught between the brush and the nozzle edge. Sometimes you have to remove the bottom plate to see it. Or, junk is wrapped around the brushes (hair, fur, thread, string, carpet fibers). It's easier to get at it if you remove the brush from the machine, but you don't have to. Use a seam ripper, knife, or scissors to cut it all loose. Or, the end bearings on the roll are gunked up. Sometimes you can pull them off to clean them out. Sometimes you can't (replace the roll). Put a drop of oil in each end to lubricate the bearings. Last, but not very often, the belt is worn out and slipping, making the motor run faster. Change the belt anyway every 6 months or so.