89 chevy p/u power steering

my truck keeps blowing powersteering hoses at the back of the pump. i have put 4 hoses on in a little over a year, i even replaced the pump thinking that was the problem. i am tired of putting hoses on cuz' it is a pain to take off and put back on. could it be the steering box itself that is blowing the hoses? any advice would be greatly appreciated.