This unit could have had a properly working pump, but the reservoir was filled with dark, gritty oil residue. I had no intention of installing it and contaminating my new oil as well as the rest of the steering gear. The photo shows the remains on paper towels. Looking into the tank with a flashlight, the matter was decided. He was back in the box and on his way back. I think I'll buy a kit and rebuild the one I removed - it was leaking around the tank gasket but otherwise worked fine. At least it's clean when I put it back together.