[lGrasberger]

Dishwasher top sprayer arm doesn't get water. It moves fine and doesn't seem to be any blockage. Any ideas

[TechnicianBrian]

Your pump has a chopper assembly that can become clogged when it breaks, or blocked with debris. If the chopper is broken you will need a new one. Here is a video that shows how to access the pump.

[richappy]

If your chopper is clogged, order a new one and the check valve next to it in the bottom of the housing. This check valve back flushes the screen while pumping out. When replacing the chopper, make sure it turns when the pump runs. To do this, turn water off, keep cover off the pump housing and run dishwasher. If chopper doesn't turn, you need a new pump impeller.