Chevrolet 91175484 Seal,Crankshaft Front Oil

Remove the timing belt, crankshaft sprocket, and inner belt guide. Wrap the tip of a small screwdriver with tape and, working from below, use the screwdriver to pry the seal out of the bore, being careful not to damage the crankshaft or the seal bore. Clean and inspect the seal bore and the seal contact surface on the crankshaft, removing minor imperfections with emery cloth. If a groove is worn in the crankshaft seal surface, installing a new seal may not stop the leak; consider using a repair sleeve that fits over the crankshaft sealing surface, typically available at larger auto parts stores. Lubricate the outer edge of the new seal with multi-purpose grease or engine oil, as well as the seal lip, and drive the seal into place with a hammer and socket. Reinstall the timing belt and related components, then run the engine and check for oil leaks.

The trans axle must be removed from the vehicle for this procedure.

The seal lips should be lubricated with multi-purpose grease or engine assembly lube before the seal and housing are positioned over the crankshaft.

The old seal can be driven out from the back side with a punch and hammer.

Finally, start the engine and check for any coolant or oil leaks.

Installing a new seal may not stop the leak. Try installing a repair sleeve which fits over the crankshaft sealing surface.

The seal lips must be lubricated with moly-base grease or engine assembly lube.

Install and tighten the retainer bolts to the specified torque.