Chevrolet 96065634 Seal,Crankshaft Rear Oil

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Yes, it is possible to replace the seal without removing the oil pan or seal retainer.

Yes, in some cases, you may be able to remove the front cover without removing the oil pan. In such cases, only the front pan-to-cover bolts need to be removed.

The seal must be pressed squarely into the housing bore, preferably using a press. If a press is not available, it can be tapped into place with a hammer and a block of wood.

The transmission must be removed from the vehicle for this procedure. The seal can be replaced without dropping the oil pan or removing the seal retainer. However, this method is not recommended because the lip of the seal is quite stiff and it's possible to cock the seal in the retainer bore or damage it during installation. If you want to take the chance, pry out the old seal. Gently pry out the old seal with a thin screwdriver-wrap the tip with tape to prevent damaging the seal bore and Crankshaft Seal sealing surface. Apply multi-purpose grease to the Crankshaft Seal journal and the lip of the new seal and carefully tap the new seal into place. Gently tap the new seal into place with a large socket. The lip is stiff so carefully work it onto the seal journal of the crankshaft with a smooth object like the end of an extension as you tap the seal into place. Don't rush it or you may damage the seal. The following method is recommended but requires removal of the oil pan and the seal retainer. After the oil pan has been removed, remove the bolts, detach the seal retainer and peel off all the old gasket material. Position the seal and retainer assembly on a couple of wood blocks on a workbench and drive the old seal out from the back side with a punch and hammer. After removing the retainer from the block, support it on two wood blocks and drive out the old seal with a punch and hammer. Drive the new seal into the retainer with a block of wood. Drive the new seal into the retainer with a wood block or a section of pipe, if you have one large enough-make sure you don't cock the seal in the retainer bore or a section of pipe slightly smaller in diameter than the outside diameter of the seal. Lubricate the Crankshaft Seal journal and the lip of the new seal with multi-purpose grease. Position a new gasket on the engine block. Slowly and carefully push the seal onto the crankshaft. The seal lip is stiff, so work it onto the crankshaft with a smooth object such as the end of an extension as you push the retainer against the block. Install and tighten the retainer bolts to the torque. The remaining steps are the reverse of removal. Run the engine and check for oil leaks.

Thoroughly clean and inspect the seal bore and sealing surface on the crankshaft. Minor imperfections can be removed with emery cloth.