Tools Required

J 42841  Crankshaft Rear Oil Seal Remover

Important:  Crankshaft rear oil seal removal requires adequate space for removal. Mount the engine on a suitable engine stand which will properly space the engine in order to use the J 42841  to remove the crankshaft rear oil seal. If necessary remove the crankshaft rear oil seal with the engine properly supported on the floor or on a bench.

1. Place the J 42841  onto the crankshaft.
2. Install the J 42841  bolts.
   Fig 1: Installing J 42841 On Crankshaft

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3. Using a drill motor (variable speed preferred) with a socket adapter, install eight one-inch self-drilling screws into the seal using the guide holes in the removal tool. When drilling, make sure you reduce the drill speed when the screw begins threading into the seal.
   Fig 2: Installing J 42841 Screws

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4. With all eight removal screws installed, remove the J 42841  bolts.
   Fig 3: Removing J 42841 Bolts

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5. Install the center forcing screw.
   Fig 4: Installing J 42841 Center Forcing Screw

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6. Tighten the center screw on the removal tool to pull the seal assembly off the end of the crankshaft.
   Fig 5: Tightening J 42841 Center Forcing Screw

   Courtesy of GENERAL MOTORS CORP.