Rear main oil seal – replacement
1. These models use a one-piece rear main seal that is sandwiched between the engine block and the lower main bearing cap assembly (or bed plate, as it’s often referred to). Replacing this seal requires removal of the transmission (see Chapters Manual transmission ; Automatic transmission ; Transfer case ) and flywheel/ driveplate (Flywheel/driveplate – removal and installation).
2. The seal can be removed by prying it out of the engine block with a screwdriver, being careful not to nick the crankshaft surface (see illustration). Wrap the screwdriver tip with tape to avoid damage.
17.2 Pry the seal out very carefully with a seal removal tool or screwdriver – if the crankshaft is damaged, the new seal will leak!
3. Thoroughly clean the seal bore in the block with a shop towel. Remove all traces of oil and dirt.
4. Lubricate the seal lip with clean engine oil and install the seal over the end of the crankshaft. Make sure the lip of the seal points toward the engine.
5. Preferably, a seal installation tool (available at most auto parts stores) should be used to press the new seal back into place. Drive the new seal squarely into the seal bore and flush with the rear of the engine block.
6. The remainder of installation is the reverse of removal.