AO Smith Shaft Corrosion at Seal Surface

AO Smith pool pump motor shaft is rusted or corroded near the seal area, making seal replacement difficult.

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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

Long-term seal leakage, Aggressive water chemistry, Galvanic corrosion, Use of incorrect seal materials

How to Fix / Troubleshooting

Safety First: Turn OFF power and remove the motor from the pump before working on the shaft.

  • Assess damage: After removing the old seal, inspect the shaft or sleeve where the seal rides. Light surface rust can sometimes be cleaned; deep pitting cannot.
  • Clean minor corrosion: Use fine emery cloth to gently polish light rust, then wipe clean. Do not significantly reduce shaft diameter.
  • Replace motor if severe: If the shaft is deeply pitted or grooved, replace the AO Smith motor assembly to ensure a reliable seal.
  • Install correct seal: Use a seal kit compatible with your pump and AO Smith motor, suitable for your pool type (chlorine, saltwater, etc.).
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Repair Difficulty

Medium 3/5

Required Part

Motor Assembly
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