BECKEN
Pump Bearing Wear / Cavitation
Dishwasher makes a 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 pump due to low water level, Restricted inlet causing cavitation, Misaligned pump mounting
How to Fix / Troubleshooting
Safety first: Unplug the appliance before accessing the base.
- Check water level: During a wash, open the door briefly and confirm that the water level is adequate (just below the door opening). Low level can cause cavitation noises.
- Clean filters and inlet: Ensure filters are clean and the inlet hose and valve are not restricted.
- Inspect pump: From the base, check that the circulation pump is securely mounted and not vibrating against the chassis.
- Assess bearings: Spin the pump impeller by hand. If it feels rough or produces noise, the bearings are likely worn and the pump should be replaced.
Persistent squealing usually indicates a failing pump; plan for replacement.
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Repair Difficulty
Hard
4/5
Required Part
Circulation Pump Assembly
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