Flywheel Seal - O-ring

This seal goes in the flywheel. It should be replaced every time the flywheel is taken off. If your seal is leaking, take the flywheel off and pry the seal out. Now remove the shims and call a friend. Have your friend push and then pull the front pulley while you look at the rear main bearing. If the bearing is moving, a new seal will not solve your problem. The engine will have to be taken apart and the case will need to be machined. If it is not moving, then you will want to check your endplay before installing the new seal. See CRANKSHAFT ENDPLAY SHIMS for instructions on how to do this. Install the seal and make sure it's all the way in (about 1/16" past flush). If you do not have a flywheel seal installer, turn your old seal upside down and use it to drive the new one in using a hammer. Note: The endplay (amount the crank is allowed to move back and forth) is .003" to .005". This measurement is very important if you want the engine to last.