steering on 09 International prostar, new pump now won't turn left?

I put new steering pump on, truck drove good that morning. I made a right turn to get fuel and then my steering wouldn't go left. I jacked it up and turning the steering wheel to left it turned right all on its own. has anyone had this happen? I tried bleeding the system, still does the same. I am planning on ordering a new steering gear box. Any other ideas on this.

 

The power steering went out. Replaced pump and all seemed good until that happened.

 

No, but good to know. It would be nice if they rented those out. I ordered power steering box, should be here on Friday.