Thermostat: Service and Repair

Coolant Thermostat

Special tools, testers and auxiliary items required

• Hose Clip Pliers (VAS 6340)

Removing

- Remove the noise insulation.

- Drain the coolant. Refer to => [ Draining and Filling ] Draining and Filling.

- Move the connector - A - to the side.





- Remove the coolant hoses - arrows - from the oil cooler and move them to the side.

- Remove the connecting piece bolts - arrows - and remove the connecting piece and coolant hose.





- Remove the coolant thermostat from the coolant pipe.

Installing

- Clean the sealing ring surface.

- Install the coolant thermostat into the coolant pipe.

• Installed position: the edges on the thermostat and coolant pipe must align - arrows -.





- Coat the new seal with coolant and install it in the coolant pipe.

- Install the connecting piece and tighten the bolts diagonally.

Tightening specification: 8 Nm.

- Install the coolant hoses - arrow - and connector - A -.





- Fill the cooling system. Refer to => [ Draining and Filling ] Draining and Filling.

- Install the noise insulation.