Checking the expansion tank cap for leaks |
Checking the cooling system for leaks |
The cooling system operates under pressure. The expansion tank cap is under the force of a spring, which opens and closes the system when a certain pressure is reached.
Increasing the pressure of the coolant leads to an increase in its boiling point.
To check the radiator cap, you need a special pump. The pump is screwed onto the plug and pressure is created until the valve opens. This should happen within the pressure limits specified above. If this does not happen, the plug must be replaced. The pump and its installation are shown in the illustration. Using the same pump, the cooling system can be tested for leaks. The installation of the pump on the expansion tank in this case is shown in the illustration. For the 2.4L engine, the expansion tank has the shape shown in the illustration. Expansion tank for 2.4L engine, however, the verification is carried out in a similar manner. Create a pressure of 1 kg/cm³ and check that the pressure gauge holds this pressure for at least 2 minutes. If the pressure does not hold, the system has a leak. When using the pump, it is necessary to follow the instructions of its manufacturer.
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