Need instruction on how to replace the thermostat in my 2002 volvo s80

The thermostat is normally located in the aluminium elbow that the top radiator hose connects to. The elbow is usually held down by two bolts and it is only necessary to remove these to replace the thermostat. It may not be necessary to remove any hoses. Take care that the new thermostat is correctly located in its recess and the old gasketing has been completely removed and that the new gasket has a smear of gasket cement on it. While tightening the bolts, make sure that the elbow is seating evenly and not catching on the edge of the thermostat or you could crack the elbow.