Does anyone know if the Kingston Vacuum pump had a check valve mechanism. I was using a electric pump but will be reinstalling the vacuum pump so any info will be helpful. When I took mine apart I think I remember that the port on the top going to the oil pump had a rectangular metal tab extending about an inch or and inch & a half into the upper chamber. I am not sure if there were any other parts beside this tab. I just assumed I was missing the vacuum check valve, if one exists. Anyone have a picture. I will try to pull mine tomorrow and take a picture.
Chet...
Chet...