Thermostat: Service and Repair

WARNING: Do not remove the radiator cap while engine is operating or while engine is still under pressure.

1. Drain cooling system until coolant level is below thermostat.
2. Disconnect upper radiator hose at thermostat housing.
3. Remove two housing retaining bolts, then the thermostat housing and gasket.
4. Reverse procedure to install. Tighten thermostat housing bolts to 15-22 ft lb.