I have 2.5 ton 6.7 seer rheem AC unit. I need condenser fan motor. Old motor info is all worn out. How to find which motot I need? RPM, Amps, Horspower,208-230VAC, shaft diameter I can measure. Can you help?

Best to take the motor to a motor shop. They can tell the rpms by the number of poles and the voltage will be 220/240 and they will match it up for you. You will also have to buy a new capacitor to match the new motor.

You provided no model number.