Dishwasher not washing properly. Making a loud grinding noise. I've cleaned the filters but that doesn't help. The lower spray arm doesn't seem to be doing anything and it doesn't seem to be filling with hot water. I've checked the hose isn't kinked. Seems ok. I wanted to take it apart to look for anything which might be blocking it but it doesn't look like there is any way in from inside the machine. Do I need to pull it out and get in from the outside?

Marc, July 2015