Response to Hello Phillip.  The Century motors 1.0 HP Full Rate Energy Efficient (EE) Motor model B2841V1 is the direct replacement for the Century Centurion Motor model 7-193993-05.  Century 1.0 HP Square Flange 56Y Full Rate EE Motor - B2841V1  From the information provided, the excessive noise coming from the motor is probably the result of bearing failure.  Bearing damage can occur when the pump runs but fails to prime.  Motor heat builds during operation and is not dissipated via the motor shaft to the circulating water.  The result is bearing failure.  The motor shaft seal, seal plate gasket, pump lid o-ring, and diffuser o-ring should be replaced concurrent with the new motor.  

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