Crankshaft Rear Oil Seal Installation

Special Tools

• EN - 41479  Crankshaft Rear Oil Seal Installer
• EN - 41479-2A  Crankshaft Rear Oil Seal Installation Guide
• EN - 41479-10  Crankshaft Rear Oil Seal Installer Adapter

For equivalent regional tools, refer to Special Tools .

1. 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.

2. Courtesy of GENERAL MOTORS COMPANY

   Install the EN - 41479-2A  crankshaft rear oil seal installation guide cone (2) and bolts onto the rear of the crankshaft.

3. tighten the bolts until snug. Do not over tighten.
4. Install the rear oil seal (1) onto the tapered cone (2) and push the seal to the rear seal bore. Install the oil seal with "THIS SIDE OUT" facing away from the engine.
5. Install the EN - 41479-10  crankshaft rear oil seal installer adapter (3) onto EN - 41479  crankshaft rear oil seal installer (4).
6. Thread the EN - 41479  crankshaft rear oil seal installer threaded rod into the tapered cone until the tool contacts the oil seal.
7. Align the oil seal (1) onto the tool.
8. Rotate the handle of the tool clockwise until the seal enters the rear housing and bottoms into the seal bore.
9. Remove the tool.