Astra L4-1.8L (2009)
Note: The following installation sequence must be observed.
12. Install the coolant hoses to heater core.
1. Slide the 2 locks on the quick-release fittings in the arrow direction up to the stop.
2. Plastic rings (green) are covered.
3. Install the 2 quick-release fittings on the heater core (1) connections up to the stop.
4. Note the markings applied. Slide the 2 locks (3) on the quick-release fittings in the arrow direction up to the stop.
5. Plastic rings (green) must be visible.
6. Inspect the correct seat of quick-release fittings and visibility of the plastic rings (arrows).
13. Install the drain hose.
Tighten the 2 bolts to 5 Nm (44 lb in).
14. Fill and bleed the cooling system. Refer to Cooling System Draining and Filling (See: Engine, Cooling and Exhaust/Cooling System/Service and
Repair).