To replace the crankshaft front oil seal in a 1999 through 2005 model, start with the removal of the timing belt and the crankshaft sprocket, then, take off the sensor ring and the one behind it. For the 2006 and continued on models, Ford Legend recommends that you start by solving the crankshaft pulley. Subsequent to this, use a screwdriver or a seal removing tool to remove the seal while making sure that the tip of the screwdriver is covered with tape to prevent marring the housing bore or damaging the crankshaft as this would lead to seal leaks with the new seal. Removing the old seal and cleaning the bore in the engine Remove the new seal and coat the outer circumference of the seal with engine oil or a multipurpose grease and brush the same grease at the lips of the seal. Ideally, a seal driver or a socket that is slightly smaller than the seal should be used to incrementally drive the new seal into the location with a hammer in such a manner that it is centrally positioned and to the same depth as the earlier seal with confirmation that the spring is still intact after replacement. Reinstall all components that you had to remove for access and apply engine power in order to search for oil leaks at the front seal. For camshaft oil seals on 1999 through 2005 models, remove the timing belt as well as the camshaft sprockets, but the important thing is how far the seals should be pushed in the bores before you pry them out with a screwdriver wrapped with tape to avoid scratching the surfaces. Scrape the interior of the bores and lubricate the marginal area of the new seal with oil or grease, and grease the seals' lips as well. Install new seals and use a hammer to make them as square as the old ones and at the same depth. All removed parts must be reinstalled to place the belt and the sprockets correctly, and the area around the seals must be cleaned to check leaking at a later date. Leakages should be looked for after a few days of using the vehicle.