Crankshaft Front Oil Seal Installation

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Special Tools

J-41478-A Crankshaft Front Oil Seal Installer
EN-51091 Crankshaft Front Oil Seal Installer

For equivalent regional tools, refer to Special Tools

Fig 1: Crankshaft Front Oil Seal Proper Orientation

Courtesy of GENERAL MOTORS COMPANY

IMPORTANT:

For proper orientation, note the installation direction of the oil seal. The oil seal is a reverse-lip design. Install with "THIS SIDE OUT" displayed as shown.

Inspect the seal for proper orientation.

Fig 2: Crankshaft Front Oil Seal And Installer Tools

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Do not lubricate the oil seal sealing surface.
Do not use the crankshaft front oil seal again.

Install the crankshaft front oil seal (3) onto the threaded rod, nut and washer from J-41478-A crankshaft front oil seal installer (1) and EN-51091 crankshaft front oil seal installer (2).
Install the J-41478-A crankshaft front oil seal installer threaded rod, nut and washer (1) and EN-51091 crankshaft front oil seal installer (2) and oil seal (3), into the end of the crankshaft.
Use the J-41478-A crankshaft front oil seal installer (1) and EN-51091 crankshaft front oil seal installer (2) in order to install the oil seal (3) into the cover bore.
1. Use a wrench and hold the hex on the installer bolt.
2. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore.
3. Remove the tool.
4. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.