The hose is a simple replacement. Depending on your girth lift the front tires about 4-6 inches, emergency brake and tire blocks recommended. Slide under the van from the drivers side. Hose runs to the macerator and the macerator is in an enclosed steel box. Four screws each on two sides hold it together. Take them out. Slide the metal cover down. Cut plastic ties...Unscrew the clamp holding the hose...pull it out... run new one..reverse procedure. Be patient on getting the screws out...not much room...30 minute job. Good luck and make sure BW and GW valves are closed.