Hayward PowerFlo pump makes a loud grinding or screeching noise while running.

Safety first: Turn off power at the breaker before inspecting the pump.

• Isolate noise source: Use a mechanic’s stethoscope or a long screwdriver held to your ear to confirm the noise is coming from the motor body, not the wet end or plumbing.
• Check for leaks: Inspect the area between the PowerFlo motor and housing for water leaks that may have damaged the bearings. If leaking, plan to replace the shaft seal along with the motor.
• Tighten mounting: Ensure the pump base and mounting bolts are secure and the pump is on a solid, level surface to reduce vibration.
• Replace motor: On most PowerFlo models, bearing replacement is not cost-effective for homeowners. Replace the complete motor assembly with a compatible Hayward PowerFlo motor, transferring the wet end components.