Pump makes loud grinding or screeching noises while running; noise comes from motor end.

Safety first: Turn off power at the breaker and verify the motor cannot start.

• Confirm noise source: Spin the motor shaft by hand with the pump off. Roughness or grinding confirms bearing wear.
• Check for water damage: Inspect the motor body for rust streaks or water marks indicating seal failure and water ingress.
• Plan for replacement: While bearings can sometimes be replaced by a motor shop, most homeowners should replace the complete AquaFlo motor assembly to ensure reliability.
• Verify alignment and mounting: When installing a new motor, ensure the pump base is level and all mounting bolts are evenly tightened to avoid side loading the bearings.