Power steering locks up

[Brock]

I'm with hagg. When's the last time you changed that filter?

My money is on power steering pump. I just did the exact same thing on my Pete and that's what it was.

You start turning, the pump surges as it Take a alot to turn them tires and "locks up" you said you can force it but it turns easier the other way... that's because it's easy to turn the tires back into the nuteral position once the loads been put on them but way harder to keep turning them.