why would my steering be so hard? on 1991 Mazda B2200

it's really hard to just had new ball joints put on,and that wasn't the problem.what could it be?

Asked by for the 1991 Mazda B2200
most likely rack, post a couple pics for furthur diagnoses.
1 more answer , 1 more comment
power steering belt fluid check re-ajustment of new parts
fluid is full