The pump and system will usually bleed itself, but you may need to bleed the steering box. Some of them have a bleeder on the top cap that is held on with four bolts and has the adjusting screw in the middle and you just crack it open with the engine running. You can use a container filled with a bit of fluid and a hose from the bleeder into the container. If it does not have the bleeder then you have to loosen the nut that is on the adjuster and let it bleed until it just has fluid coming out. Then holding the adjusting screw with a screwdriver, tighten the nut. What I would do first is to jack up the front-end with the wheels off the ground, set it on jack stands making sure the tires are off the ground. Make sure the reservoir is full of ATF (you do use ATF and not power steering fluid I hope). Start it up and cycle the steering lock to lock about five times. Shut it down and check the reservoir, if it is foamy, let it sit for about half an hour, replenish the reservoir and repeat until not foamy.