| 1. Remove the thermostat from the car. |
| 2. Ship the thermostat and the control thermometer in glass capacity with a cooling liquid so that they did not concern a bottom and vessel walls (it can lead to distortion of indications). |
| 3. Establish capacity on an electric tile and increase temperature of a cooling liquid, watching indications of the thermometer and moving of the valve of the thermostat. It should start to open at liquid temperature approximately 88 With and completely to open at temperature 92 With. |
| 4. Replace the thermostat if it does not satisfy at least to one of check requirements. |