Ford F5TZ-6701-A Oil Pan Rear Seal

Disconnect the negative battery cable and remove the Serpentine Belt. Next, remove the bolt from the center of the crankshaft pulley, ensuring the crankshaft does not turn by preventing it with a large screwdriver wedged between the teeth of the starter ring gear against the transmission housing, or by using an extension through one of the holes in the crankshaft pulley against the block, or a strap-type wrench around the pulley. Use a puller designed to apply force to the pulley hub only, avoiding any that grip the outer edge to prevent damage. Clean the crankshaft nose and seal contact surface with lacquer thinner or acetone, leaving the Woodruff key in place. Examine the seal contact area for excessive wear or scoring, and consider using a repair sleeve if necessary. The crankshaft front oil seal can be removed with a special tool or a carefully taped screwdriver, taking care not to damage the timing chain cover or the crankshaft. If the engine has high mileage, apply penetrating oil to the seal-to-cover joint before removal. Position the new seal in the bore with the open end facing inward, applying a small amount of oil to the outer edge for easier installation. The seal can be reinstalled using a special tool or by driving it into the bore with a large socket and hammer until fully seated and square to the cover. Lubricate the oil seal contact surface of the crankshaft pulley hub with multi-purpose grease or clean engine oil, then install the pulley, ensuring the keyway aligns with the Woodruff key. Apply a small amount of RTV sealant to the Woodruff key groove before installation. Use a special pulley installation tool or a large washer over the bolt to press the pulley into place, tightening the bolt to the specified torque without using a hammer. Complete the remaining installation steps in reverse order, then add coolant, check the oil level, and run the engine to check for leaks.