Pump is very noisy with a loud grinding or screeching sound

Safety: Turn off power and lock out the breaker before working on the pump.

• Confirm source of noise: Use a mechanic’s stethoscope or a long screwdriver to listen at the motor body versus the wet end. Bearing noise will be loudest at the motor.
• Check for leaks: Inspect the shaft seal area between motor and pump housing. A leak here can allow water into the motor and accelerate bearing failure.
• Short‑term mitigation: There is no permanent quick fix for worn bearings. Running the pump in this condition can lead to motor seizure or further damage.
• Plan replacement: Replace the motor with a compatible Pentair Sta‑Rite replacement motor (match HP, frame, and service factor) and always install a new shaft seal kit at the same time.
• Seal the wet end: When installing the new motor, ensure the seal plate gasket and housing o‑ring are in good condition to prevent future leaks.