Crankshaft pulley — removal and installation (Opel Astra G)

Removal

1. Raise the front of the car and place it on stands, remove the right wheel.

2. Remove the drive belt (see Chapter 1), having previously indicated the direction of their movement.

3. To prevent the crankshaft from turning when unscrewing the pulley bolt, engage the highest gear and ask an assistant to press the brake pedal. On models with an automatic transmission, unscrew one of the drive disk mounting bolts and secure the disk relative to the crankcase using a bar and 2 bolts. If the bolt unscrews on a removed engine, then secure the flywheel with a device by the toothed ring.

4. Loosen the bolt and remove the pulley from the crankshaft, taking care not to damage the crankshaft angle sensor.

Installation

5. Install the pulley by aligning the notch on the pulley with the protrusion on the camshaft belt drive sprocket, put on the washer and tighten the new bolt (see photo).



6. Fix the crankshaft from turning and tighten the bolt in 2 stages (see Technical data). Install the belt, install the wheel and lower the vehicle.