You have to remove the Sepentine Belt, The Timing cover and the timing belt to get to it. I'm not sure if the Crank Pluuey has to come off or not. It is a major job. You may also want to look at doing the Timing belt while it's off. I started to do it. Then desided this would be better suited to someone who knows alot more about cars. I believe all year models of Zetec are the same in this respect.
