Crankshaft seals — replacement (Opel Astra G)

Right oil seal (from the toothed belt side)

1. Remove the crankshaft sprocket.

2. Drill two diametrically opposite holes in the seal and screw in self-tapping screws. Remove the seal by grasping the screws with pliers (see photo). Take care not to damage the oil pump.



3. Clean the seal housing and remove all burrs and sharp edges.

4. Lubricate and carefully press the new seal until the seal surface is flush with the housing (see photo).



5. Remove any remaining grease, then install the crankshaft sprocket.

Rear oil seal (from the flywheel/drive disk side)

6. Remove the flywheel and remove the oil seal using the same steps as for removing the front oil seal (see photo).