I just recently had to take off the steering pump lines to remove the steering box so I could weld plates on the frame. But when I put it all back together it started leaking from the spot on the picture below. I changed the o-ring that connects the pump to the reservoir thinking that was the issue. It seemed like it worked but a day later it’s dripping at a steady pace once again. Any help is appreciated

 

I had mine leak there after I replaced my reservoir. I tried an o-ring from the Harbor Freight assortment, didn't work, I ended up ordering another reservoir and using the o-ring from it. I do believe the size and part number for that o-ring is posted on this forum.