Ford AT4Z-6701-A Rear Main Seal

Replacing the rear Crankshaft Seal with a new one is not an easy and time-consuming exercise which calls for several special tools, hence the need to have prepared all the necessary tools beforehand. The initial step would be to remove the cable from the negative terminal of the battery; secondly, judiciously jack up the car and place it on jack stands. Then the transmission, and the flywheel/driveplate, and toothed-wheel, which is engaged by the CKP sensor between the crankshaft and the driveplate should be detached. Use a particular instrument to extract the crankshaft rear oil slinger together with the rear Crankshaft Seal from the retainer. To prevent oil leaks after adding the new seal, it is advisable not to mar or hurt the crankshaft sealing surface or the bore on the engine block. Remove and clean the crankshaft and seal bore in the retainer; use brake system cleaner to degrease the crankshaft and the area for the seal. Check the seal contact area on the crankshaft for roughness that will adversely affect the new seal lip causing oil leakage and use oil to lubricate the lip of the new seal and the outer diameter of the crankshaft such that edges of the new seal are not rolled. Align the new seal on the crankshaft so that in case it was marked, it offered a label that read ''THIS SIDE OUT'' towards the back part of the engine. Insert a special rear Crankshaft Seal installation tool to fit the seal to the bottom of the seal retainer and to make sure that it is even all the way around the circumference of the seal retainer. However, the seal retainer plate can be unbolted to have the seal replaced on a bench with a new gasket being applied to the seal retainer and five minutes after the application of the RTV. Last of all, the crankshaft rear oil slinger is to be installed with the help of a special tool that is used for this purpose only, then the process of installation is to be completed in the reverse order of the process of removal.