ATV Repair and Maintenance Did I Screw Something Up? May 10, 2015 I greased my rear ujoint zerk on my 570 Sportsman but used more than 3 pumps on the grease gun. Grease had oozed out the ujoint area and gone all over after a short ride. Is there a seal or something that I screwed up? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related