Jackson dishwasher makes loud grinding or rattling noises during wash or drain.

Safety first: Disconnect power. Sharp objects may be present in the sump—wear cut-resistant gloves.

• Inspect tank and sump: Remove strainers and look for foreign objects (glass, cutlery, bones) in the sump area. Remove carefully.
• Check wash and drain pumps: Access pump housings and inspect impellers for damage or debris. Ensure impellers are tight on shafts.
• Verify pump mounting: Tighten any loose mounting bolts or brackets that may cause vibration.
• Check water level: Ensure the tank is at the correct level; low water can cause cavitation noise. Address any fill or leak issues.

If noise persists and bearings feel rough when spinning the motor by hand, the pump or motor assembly may need replacement.