GM 94858594 Seal,Crankshaft Front Oil

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To replace the front oil seal the torsional damper needs to be removed first. Then, pry out the old seal from the front cover using a large screwdriver, without much force that results in a damaging of the crankshaft. Place a new seal with the open end towards the inside of the cover and insert a suitable tubular spacer to carefully drive the seal into position with the torsional damper re fitted. To deal with the rear oil seal, first remove the oil pan, and the pump as well. Subsequently, remove the rear main bearing cap and lift the oil seal using a blade of a screwdriver. Knock out the upper half of the seal around the crankshaft with a hammer with a small aluminum or brass drift while using a brass punch and hammer to hit the seal end thus making it easy to use the pliers to remove it. Remove all foreign material from the crankshaft and bearing cap and compare sealing faces for signs of nicks, scratches, burrs etc. Apply oil of a light grade to the lips and bead of the seal but exclude the mating surfaces. If no installation tool came with the new seal, hand-make one from brass or from thin, gauge plastic sheet. Crank the seal up to the crankcase in a manner that the seal bead faces the tool tip and the oil seal lip faces the front of the engine; position the tool tip between the crankshaft and seal seat. TORQUE the seal such using the tool as a 'shoe-horn' so as to prevent the seal bead from being slit by sharp edges. When both ends of the tool reach the block ends take out the actual tool so that the complete length will not be pieced out of the seal. Place the seal half on to the bearing cap with simple thumb and finger pressure; apply gasket sealant to the cap-to-case interface but avoid getting the sealant on the seal split line; and finally screw the bearing cap further on till the bolts are torqued up to the required level and not a centilitre more. Last of all, replace the oil pump and the oil pan.