Coolant Thermostat

Coolant Thermostat

• Checking the coolant thermostat, see - item 17 - in Part 1 of the => [ Coolant Pump and Thermostat Overview ] Coolant Pump and Thermostat Overview.

Special tools, testers and auxiliary items required

• Adapter (V.A.G 1274/8)

• Drip Tray for VAS 6100 (VAS 6208)

• Hose Clip Pliers (VAS 6362)

• Cooling System Charge Unit (VAS 6096)

• Refractometer (T10007)

Removing


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 => [ Coolant, Draining and Filling ] Service and Repair.

- 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.

- Reinsert the oil dipstick guide tube in the cylinder block. Tighten the bolt to prevent coolant from leaking into the engine.

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

- Remove the bolts - arrows -, the cover - A - and the thermostat.






Installing

Install in reverse order of removal. Note the following:

• Replace the O-ring and seal, see - items 16 and 18 - in Part 1 of the => [ Coolant Pump and Thermostat Overview ] Coolant Pump and Thermostat Overview.

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






• Fill the coolant. Refer to => [ Coolant, Draining and Filling ] Service and Repair.

Tightening Specifications