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The thermostat air flow
The thermostat is designed to supply the heated air into the engine. Overlapping channel cool air to the engine is cold damper is provided, connected to a vacuum diaphragm.
As the heating of the engine vacuum port diaphragm gradually overlaps termobimetallicheskim vacuum valve flap partially ajar and the engine starts to be fed cold air.
Check | PERFORMANCE ORDER | | 1. To check the engine is cold, disconnect the air line from the filter - valve must fully close the passage of hot air. | | 2. After starting the engine valve must immediately close the channel cold air and then slowly opened. | | 3. To check the vacuum valve termobimetallicheskogo disconnect and plug the vacuum tube. On the cold engine should be felt strong negative pressure on the heated vacuum should be absent. | | 4. To check the thermostat to remove it and remove the vacuum tube. When absorbed through the choke valve should close the channel cold air. | | 5. Faulty vacuum valve and replace the thermostat. |
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Replacing the vacuum valve
| PERFORMANCE ORDER | | 1. Remove the air filter. |  | 2. Bend the bracket and remove the vacuum valve (arrow). | | 3. Remove and inspect the gasket. | | 4. Put the seal and install the valve. | | 5. Securely fasten the valve by bending the bracket. | | 6. Install the filter. |
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Replacing the valve thermostat
| PERFORMANCE ORDER | | 1. Remove the air filter and nozzle. |  | 2. Remove the three screws and remove the thermostat, disconnect the hose. | | 3. Remove the screws and remove the diaphragm. | | 4. Install the new diaphragm valve on the regulator and tighten the screws. | | 5. Attach the hose and install the regulator, tighten the screws. | | 6. Install the filter. |
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