Replacement of a sealing ring of a camshaft

1. Remove toothed belt from camshaft pulley.

2. Unscrew and remove the toothed pulley from the camshaft, holding the pulley from turning with a rod or screwdriver.

3. Using the appropriate tool, remove the O-ring.

4. Lubricate the sealing lips of the new O-ring and install the O-ring using the bushing and toothed pulley mounting bolt.

5. Install the toothed pulley and tighten its fastening bolt.

6. Install toothed belt and adjust its tension.