Carbon motor brushes are critical electrical components that conduct electricity from the motor housing to the rotating armature, with a standard length of 3/4 inch and requiring replacement when worn down shorter than 3/16 inch. The Hoover 46100 motor brushes restore proper electrical contact and motor performance when original brushes become worn or damaged. These carbon and plastic components are often the cause of a poorly running motor, and new brushes can restore a motor's electric braking capability.

Constructed from high-quality carbon and plastic materials, these motor brushes provide consistent electrical conductivity and durability. When motor brushes are failing, visible signs include large blue sparks wrapping around the commutator at the top of the armature, indicating the carbon brushes have burned down and require immediate replacement.

Compatible with various Hoover commercial upright models including C1431 Guardsman, C1631 Professional Guardsman, U4363042, U4373 series, and convertible models like U4385 and U4407. Motor life expectancy is typically 800-900 hours of use, with regular brush maintenance extending overall motor performance.

Swiss Boy Vacuum has been Utah's trusted vacuum specialist since 1963, serving the Wasatch Front with genuine Hoover parts and expert repair services. As an authorized Hoover dealer, we stock authentic motor brushes and components to keep your vacuum performing at peak efficiency.