The transmission may be damaged. To verify it, it will be a matter of checking under the tub. If there are traces of rust, oil or tartar, such damage is confirmed. Now that if the shaker and tub are washed at the same rate and direction when washing, then it will be a punctured float. Maybe the coupling or the arrow or both could be swept (although I think this cannot make the mistake (blinding) - It is also advisable to verify the Capacitor (it must be in its range of microfarads) and its electrical terminals must be clean and well assembled ... Regards