Crankshaft Rear Oil Seal Installation

WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 42849 Crankshaft Rear Seal Installer. See Special Tools .

IMPORTANT: Crankshaft rear oil seal and engine flywheel installation requires adequate space for installation. If the engine stand does not allow suitable space to use the J 42849 , install the crankshaft rear oil seal and engine flywheel with the engine properly supported on the floor. See Special Tools .

Fig 1: View Of J 42849

Courtesy of GENERAL MOTORS CORP.

Make sure the crankshaft rear chamfer is free of grit, loose rust, and burrs. Correct as needed.
Apply a very light film of oil onto the crankshaft sealing surface.
DO NOT apply oil to the sealing surface of the engine block.
Install the seal on the J 42849 . See Special Tools .
Position J 42849 against the crankshaft. See Special Tools . Thread the attaching screws into the tapped holes in the crankshaft.
Tighten the screws securely with a screwdriver in order to ensure that the seal is installed squarely over the crankshaft.
Rotate the center nut until the J 42849 bottoms. See Special Tools .
Remove the J 42849 . See Special Tools .