Your next step is to identify where you have to cut the piping to remove the old pool pump. This picture show three points to cut: A, B, and C. We want to add two unions at points A and B when we add the new pump. As mentioned before this will shift the new pool pumps position 1" to 2" to the right. If we didn't have to shift the pump we could get by with cutting the pipes at points A and B. However, since we are shifting the pool pump, the angle on the pipe at B is going to change and we will have to cut the pipe at C to rotate that connection slightly counterclockwise. Therefore, we will cut the pipes at A and C, to remove the old pump.