The upper wash arm is not spinning on my diswasher. I took a look and found the cover screws to the filter screen had loosened and the gasket not in place. I reseated gasket and tightened screws and washer worked fine for a couple of weeks.
Now back to same problem with wash arm except gasket is in place this time, so i pulled it down farther. Managed to break the wash impeller when trying to remove it from the motor shaft. I couldn't find anything that looked out of ordinary. The drain check valve seems to work ok.
I need some help please.