After my power steering cooler went bad, I had it replaced in a shop and right after that noticed a leakage. The fluid leaked right near the pump, so I assumed that apparently someone there broke my pump. Of course, I went to the shop the day after and they determined a leakage of the hose, so they got it replaced (
https://www.carid.com/power-steering-coolers/). And since then (it was well over 2 years so far) I've got no problems with the power steering what so ever.