You insert the shaft into your axle, jack it up and slide the tire out onto the jack shaft. Then you really block the axle up and reduced the jack. Labored really well. You should definitely depart your tow car connected and its emergency brake activated and wheels chocked. https://how-to-jack-up-an-rv72616.bluxeblog.com/36954900/top-how-to-jack-up-an-rv-secrets