Replaces Part Numbers: 2311480, 333261, 33326-1 This is high quality replacement carbon brush for Electric Vacuum Motor Replacing brushes can fix an intermittent motor. brushes can a motor's electric . The carbon brush is retractable. Carbon motor brushes are one of the components for . when you are installing to make the carbon brushes go in completely and stay straight. It is normal to need to hold in until the connector is re-secured.