Astra L4-1.8L (2009)
4. For vehicles equipped with the heater housing insulator, remove the air inlet screen (1).
5. For vehicles equipped with the heater housing insulator, remove the windshield wiper arms (2).
6. Remove the 2 covers.
Remove the 2 nuts.
7. Remove the 2 washers.
8. Remove the 2 wiper arms from the shaft.
