I got my temporary Procon pump from my Dad today. I have never replaced a Procon pump but William said it is easy, which it was.
You just have to remove the old pump. Mine is a clamp style because it is clamped on like the second picture shows. The other type is flange type.
Then you put the “magic piece” (second picture) which make everthing work in the motor, line it up with the pump, tighten the clamp on the pump and motor, install all the hoses back correctly and test. Done!