steering box adjustment

nothing but the box. But had to pull the power steering pump and pitman arm to get it out. Standing at the DS fender bending over I put an allen wrench in the top of the screw and hold it while I loosen up the nut. then turn the allen wrench CCW and then lock down the nut. correct. But a little is a lot is what I am asking. If I remember right you don't have to turn the allen wrench very much to loosen up the steering. I will just back it out a 1/2 turn at a time and check it. Thanks guys.