5.10. Diagnostics of malfunctions of the cooling system
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REASON
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WAY OF ELIMINATION
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Too high temperature of cooling liquid, indication is in red area of a scale
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| Too little cooling liquid in a circulation contour | The compensation tank has to be filled in to a mark, see subsection 5.2., check tightness of the cooling system. |
| The regulator of supply of cooling liquid is not open (thermostat) | Check whether the top hose with cooling liquid on a radiator heats up. If is not present, remove and check the regulator, if necessary, replace. |
| The pump of system of liquid cooling is faulty | Sort and check the pump. |
| The sensor of indication of temperature of cooling liquid is faulty | In addition check the sensor. |
| The system of indication of temperature of cooling liquid is faulty | Check the indicator device. |
| The carving cover of a radiator is faulty | Check the cooling system, carry out hydraulic test of a carving cover. |
| Radiator plastnka are polluted | Remove a radiator and blow it compressed air from the engine. |
| The radiator is intoxicated limy deposits and products of corrosion inside. The radiator heats up only in the top part, the lower hose of a radiator with cooling liquid does not heat up | Replace a radiator. |
| The fan of a radiator rotates not according to increase in frequency of rotation of a shaft of the engine, the bimetallic plate of the hydraulic coupling of the fan of the cooling system is faulty | At a temperature of cooling liquid about 90-95 °C leave to work the engine with the frequency of rotation of a shaft of the engine of 4000-4500 rpm., at the same time the frequency of rotation of a shaft of the fan has to increase accurately. Otherwise check the hydraulic coupling of the fan of the cooling system, if necessary replace a bimetallic platinka. |