Slant 6 power steering pump federal/trw style or newer style with brackets

Ok so I got my pump on and car running again but there is some slack on the belt for the ps pump. Friends dad said there should be something to adjust the tension on the pump. I have a trw pump thanks to Roy sgbarracuda from Florida. If anyone knows if there is something I can adjust the tension with if not I’ll use the pulley off my old one and see if that helps just thought I’d see your guys thoughts before I take it off again.