Thermostat: Service and Repair

Thermostat Replacement
Removal Procedure

Important: The water pump inlet and thermostat MUST be replaced as an assembly. The thermostat is not serviceable separately.

1. Drain the cooling system. Refer to Draining and Filling Cooling System.
2. Reposition the outlet hose clamp at the water pump inlet.
3. Remove the outlet hose from the water pump inlet.





4. Remove the water pump inlet bolts.
5. Remove the water pump inlet.





6. Important: The O-ring seal is integral to the thermostat housing.

Remove the thermostat housing.

Installation Procedure





1. Important: Ensure that the new thermostat housing has an O-ring seal and is in the groove correctly.

Install a new thermostat housing.





2. Install the water pump inlet with thermostat.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the water pump inlet bolts.
Tighten the water pump inlet bolts to 14 Nm (10 ft. lbs.).
4. Install the outlet hose to the water pump inlet.
5. Position the outlet hose clamp at the water outlet.
6. Fill the cooling system. Refer to Draining and Filling Cooling System.