Range Rover (LH) V8-3.5L (1987)
Thermostat: Testing and Inspection
Thermostat
NOTE: Rating stamped on the thermostat is when it should be fully open, 88°C (190°F).
Heating Thermostat
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Place the thermostat and a Centigrade thermometer in a laboratory beaker, or a suitable alternative, half full of water.
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Heat the water and observe the temperature at which the thermostat opens.
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If faulty, discard the thermostat.