Davey Worn or Failed Motor Bearings

Pump is very noisy with a loud grinding or screeching sound while running.

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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

Age-related bearing wear, Water ingress past mechanical seal into motor, Corroded shaft, Misalignment between motor and wet end

How to Fix / Troubleshooting

Safety first: Isolate power before touching the pump. Do not continue to run a pump with loud grinding noise; it can seize and trip breakers.

Step-by-step checks:

  • 1. Confirm noise source: Place your hand lightly on the motor body (with power off) and spin the shaft by hand if accessible. Roughness or grinding indicates bearing failure.
  • 2. Inspect for leaks: Look for water or rust trails between the pump wet end and motor face; this suggests a failed mechanical seal that has allowed water into the bearings.
  • 3. Plan for repair: Bearing replacement requires motor disassembly and press tools. In many cases, replacing the complete Davey motor assembly is more economical.

Because bearing replacement is complex and involves electrical safety, contact a qualified pump repair technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Motor Assembly
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