Thermostat: Service and Repair

Thermostat Replacement (L61)

Removal Procedure
1. Drain the cooling system.





2. Remove the thermostat housing to water pump feed pipe bolts.





3. Remove the thermostat housing to water pump feed pipe.





4. Remove the thermostat and retaining sleeve, noting orientation for installation.

Installation Procedure





1. Install the thermostat and retaining sleeve with the dimple placed into the housing slot.





2. Important: Lubricate the O-rings with coolant ONLY.

Install the thermostat housing to water pump feed pipe.





3. Notice: Refer to Fastener Notice in Service Precautions.

Install the thermostat housing to water pump feed pipe bolt.
^ Tighten the bolt to 10 Nm (18 inch lbs.).
4. Fill the cooling system.