Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Clean any debris from the crankshaft rear oil seal drain (1) using wire or an unbound plastic tie-wrap (2).
Important: Make sure the drain is clear before installing the new crankshaft rear oil seal. Failure to clear the drain could cause the crankshaft rear oil seal to leak.
Place a small amount of Gasket Maker, GM P/N 1052942 or equivalent, at the crankcase split line across the end of the upper/lower crankcase seal.
Coat the outer diameter of the cylinder block crankshaft rear oil seal area with clean engine oil GM P/N 12345501 or equivalent.

Fig 1: Cleaning Crankshaft Rear Oil Seal Drain
Courtesy of GENERAL MOTORS CORP.

Important: DO NOT allow any engine oil on the area where the crankshaft rear oil seal is to be pressed onto the crankshaft. The green coating pre-applied to the inner diameter of the crankshaft rear oil seal must not be contaminated.
Wipe the outer diameter of the flywheel flange clean with a lint-free cloth.
Important: DO NOT put any engine oil on the green coating pre-applied to the inner diameter of the crankshaft rear oil seal. This coating is a sealant that must not be contaminated.
Lubricate the outer rubber surface (1) of the crankshaft rear oil seal with clean engine oil GM P/N 12345501 or equivalent.
Important: It is not necessary to completely unthread the center bolt and separate the 2 pieces of the J 42842.

Fig 2: Identifying Crankshaft Rear Oil Seal Lubrication Area

Courtesy of GENERAL MOTORS CORP.

Loosen the center bolt of the J 42842 until the center hub protrudes approximately 13 mm (0.50 in) beyond the outer plate.
Install the J 42842 to the rear of the crankshaft.

Fig 3: Installing J 42842
Courtesy of GENERAL MOTORS CORP.
Thread the 3 mounting bolts into the crankshaft flange.
Tighten the bolts until the J 42842 is firmly mounted on the crankshaft.

Fig 4: Tightening J 42842 On Crankshaft
Courtesy of GENERAL MOTORS CORP.
Install the crankshaft rear oil seal by tightening the center bolt until the J 42842 bottoms against the crankcase.
Loosen the center bolt to release pressure on the crankcase.

Fig 5: Loosening Center Bolt On J 42842
Courtesy of GENERAL MOTORS CORP.
Loosen the 3 mounting bolts.
Remove the J 42842 from the crankshaft flange.
Inspect to ensure the installation depth is equal around the crankshaft rear oil seal's circumference. If the depth is not equal reinstall the J 42842 and repeat the installation procedure.
Install the engine flywheel. Refer to Engine Flywheel Replacement .

Fig 6: Loosening J 42842 Off Crankshaft
Courtesy of GENERAL MOTORS CORP.