Navigator 2WD V8-5.4L (2007)
Thermostat Housing: Service and Repair
Thermostat and Thermostat Housing
Material
Removal and Installation
1. Drain the engine cooling system.
2. If servicing the thermostat housing, disconnect the upper radiator hose from the thermostat housing.
3. Remove the 2 bolts, the thermostat housing and the thermostat. Discard the O-ring seal.
^
To install, tighten to 10 Nm (89 inch lbs.)
4. To install, reverse the removal procedure.
^
Inspect the mating surfaces. Clean the sealing surfaces with metal surface prep. Follow the directions on the packaging.
^
Install a new O-ring seal.
