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.

Take the timing belt off, along with the crankshaft sprocket and inner belt guide. Wrap a piece of tape around the tip of a small screwdriver. Then, from underneath, use this screwdriver to wedge out that seal. Use the tip of a small screwdriver to pry the seal out carefully-wrap the tip with tape to avoid destroying the seal bore and crankshaft sealing surface. Be keen enough not to wipe or scratch either the seal bore nor crankshaft's surface. Rinse thoroughly and check for any imperfections in the crankshaft's bearing surface or sealing face. Light scratches can be smoothed using emery cloth. Installing a new seal may not cure an oil leak if there is a groove worn into the crankshaft sealing face (from contact with the seal). Trial fit one of those repair sleeves which slide over the top of your engine's bottom end crankshaft finish or upper shaft section. These are usually available at larger automotive parts stores. Make sure you lubricate your new seal with engine oil before inserting it into place using a suitable socket and hammer for driving. Insert the new seal gently by tapping it into place with a socket and a small hammer. Finally, put back all components related to timing belt. Start it up and look for signs of oil leakage.

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

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

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

Install and tighten the retainer bolts to the specified torque.