Brandt Pump Bearing Wear / Cavitation

Dishwasher makes high-pitched squealing or whining noise during operation.

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Safety Warning

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.

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Possible Causes

Worn circulation pump bearings, Air in water system causing cavitation, Restricted water inlet causing low flow, Defective drain pump bearings

How to Fix / Troubleshooting

Safety first: Disconnect power before removing panels.

  • 1. Determine noise source: Listen carefully to identify if the noise occurs during wash (circulation pump) or drain (drain pump).
  • 2. Check water supply: Ensure adequate water pressure and clean inlet filters to prevent cavitation.
  • 3. Inspect pumps: Access the base and run a short cycle while observing (with caution). If the noise clearly comes from a pump, remove and inspect it.
  • 4. Replace worn pump: If bearings are worn or the shaft is loose, replace the affected circulation pump or drain pump.
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Repair Difficulty

Hard 4/5

Required Part

Circulation Pump / Drain Pump
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