2.4.5. Removal, check and thermostat installation

Fig. 2.182. Thermostat components

Merge cooling liquid so that its level was below the thermostat.

Remove an inlet branch pipe of system of cooling and laying.

Remove the thermostat.

Fig. 2.183. Thermostat immersion in a water bath

Place the thermostat in hot cooling liquid or water and check that the temperature of opening of the valve of the thermostat corresponds to nominal rate. Replace if necessary (fig. 2.183).

Temperature of the beginning of opening of the valve: 82 °C.

Temperature of complete opening of the valve: 95 °C.

Valve stroke (at complete opening): 8,5 mm.

Check correctness of landing of a flange of the valve of the thermostat in a nest of the case of the thermostat. If the thermostat is established incorrectly, its lower part will touch an edge in a bringing branch pipe that will lead to violation of operation of the thermostat.

Establish taking-away branch pipe with new laying.

Fill in in system fresh cooling liquid.