Pontiac 10088158 Seal,Crankshaft Rear Oil

The rear crankshaft bearing oil seal can be changed without taking out the oil pan or crankshaft. The first thing you need to do is to remove the transmission. If you have a manual transmission, remove the pressure plate and clutch disc. You'll then take out the flywheel or driveplate. Carefully pry the seal out of the block using a seal removal tool or large screwdriver. However, ensure that you don't scratch or nick the crankshaft in this process. After removing it in this way, clean bore in the block and crankshaft at seal contact surface. Determine whether there are any scratches, nicks on its surface that might damage new seal lip and therefore lead to oil leakage. When crankshaft is damaged, new different crankshaft is required only. Lightly coat both outer edge of a new seal with clean engine oil and the lip of its mouth with engine oil as well. Use J34924 GM tool(if available) and press it into place until it is fully seated with rear facing towards front of engine where necessary, otherwise just carefully work seal lip over end of crankshaft and tap seal into bore until square and seated with hammer and blunt drift when no tool is available. Next step is installation of a flywheel or driveplate as per your choice; on other hand if it's a manual transmission reinstall pressure plate plus clutch disc accordingly after which fix back transmission eventually.

Inspect the rear main bearing cap and engine block mating surfaces, as well as the seal grooves, for any defects. Remove any defects with a fine file or deburring tool.

Drive the seal into the bore with a large socket and hammer.

Begin by removing the oil pan and oil pump, followed by the rear main bearing cap.

Remove the timing chain cover.

Use a screwdriver to pry the lower half of the oil seal from the bearing cap.

Rotate the handle of a hammer or equivalent tool to size the packing until the balancer hub can be inserted through the opening.

To replace the front seal, start by removing the vibration damper.

Before reinstalling the timing chain cover, a bead of RTV sealant should be applied to the mating surface of the oil pan.

A breaker bar may be needed if the bolt is tight.

Disconnect the negative battery cable from the battery.

The first step is to remove the cable from the negative battery terminal.

The seal can be pressed into the housing using a one-piece rear main seal installation tool or driven in carefully with a blunt tool, ensuring it is squarely positioned without damage.