1. Operation of the thermostat is checked visually by means of a mirror. |
2. Find a thermostat zaslonka. |
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3. On some cars disconnect an air line of cold air from a filter bell in the direction specified by an arrow (1). Zaslonka (2) should be visible through a bell. |
4. At engine warming up the zaslonka should block gradually a filter bell which the hose from a final collector and a prestarting heater joins. |
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5. After engine warming up the zaslonka (1) should open completely the channel of cold air (see subsection 6.5). |