If the arms are aligned properly (as in perpendicular to shaft axis) and are not worn, the original spring clips will work. These are available new. ($2.50) Don't know if they are being popped off by misalignment or not in groove to begin with or spring is shot? But wrong arm on wrong place and frozen shaft points to misalignment/assembly problem. Those guys will stay on for a 100 years. Be sure that motor (I guess vacuum in your case) is mounted correctly and not crooked or missing a grommet/spacer.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn