recently changed my power steering pump, now the steering is extremely hard?

Let's start with checking the fluid and make sure it is full.

https://www.2carpros.com/articles/how-to-check-and-fill-power-steering-fluid

If it is then lift the wheels off the ground so that you have no load and turn the wheel back and forth to work any air out.

https://www.2carpros.com/articles/power-steering-fluid-flush

If none of this works then I suspect the issue is the new pump failed.

https://www.2carpros.com/articles/how-to-replace-a-power-steering-pump

This means we need to replace the pump again.

I am attaching the info below from the manual so let's run through this and let me know what questions you have.

Thanks