KitchenAid Foreign Object in Sump or Failing Circulation Pump

Dishwasher makes loud grinding or rattling noise during wash cycle.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Broken glass or bones in sump, loose spray arm hitting dishes, worn circulation pump bearings, debris in pump impeller

Safety First: Turn off power before reaching into the sump.

Internal inspection:

Remove the lower rack, spray arm, and filters.
Use a flashlight to inspect the sump for foreign objects (glass, seeds, utensils). Remove carefully.
Spin the spray arms by hand to ensure they rotate freely and do not hit racks or dishes.

If noise persists:

The circulation pump bearings or impeller may be worn. Access the pump from underneath and replace the circulation pump assembly if it is noisy when running.

Medium 3/5

Circulation Pump Motor Assembly

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