F 150 4WD V8-5.4L VIN V Flex Fuel (2007)
Thermostat: Service and Repair
Thermostat - 5.4L (3V)
Material
Removal and Installation
1. Drain the engine cooling system.
2. Remove the air cleaner intake pipe.
3. If servicing the thermostat housing, release the clamp and disconnect the upper radiator hose from the thermostat housing.
4. Remove the bolts and the thermostat housing.
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To install, tighten to 10 Nm (89 inch lbs.).
5. Remove the thermostat and the O-ring seal. Discard the O-ring seal.
6. To install, reverse the removal procedure.
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Install a new O-ring seal and lubricate it with clean engine coolant.
7. Fill and bleed the cooling system.
