Coolant Thermostat

Coolant Thermostat

• Checking the coolant thermostat, refer to - item 17 - => [ Coolant Thermostat ] Cooling System Components, Engine Side.

Special tools, testers and auxiliary items required

• Refractometer (T10007)

• Drip Tray for VAS 6100 (VAS 6208)

• Hose Clip Pliers (VAS 6362)

• Cooling System Charge Unit (VAS 6096)

• Adapter (V.A.G 1274/8)

Removing

CAUTION!
Hot steam may escape when opening the expansion tank cap. Wear protective goggles and protective clothing to prevent damage to eyes and scalding. Cover the cap with a cloth and open very carefully.

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

- Remove the engine cover with air filter. Refer to => [ Engine Cover with Air Filter ] Engine Cover With Air Filter.

- Remove the intake manifold. Refer to => [ Intake Manifold ] Intake Manifold.

- Install the oil dipstick guide tube in the cylinder block. Tighten it to prevent cooling from flowing into the engine.

- Place a suitable container under the coolant thermostat housing to catch coolant draining out.

- Remove the bolts - arrows -, remove the connecting piece - A - and remove the thermostat.





Installing

Installation is performed in the reverse order of removal. When doing this note the following:

• Replace the seal - item 18 -=> [ Seal ] Cooling System Components, Engine Side and O-ring - item 16 -=> [ O-ring ] Cooling System Components, Engine Side.

• Note the installed position of the thermostat - 1 -. The valve - 2 - must point upward.





• Fill with coolant. Refer to => [ Draining and Filling ] Draining and Filling.

Tightening Specification