In this article we will talk about how to drain the coolant from the engine. This procedure is necessary for various reasons. For example, when repairing the cooling system of an internal combustion engine. Even replacing a thermostat requires draining the coolant. But let's look at the main reasons for this procedure in more detail. From the article you will also learn how to fill the system with liquid and make pumping - getting rid of air congestion.
The main reasons for draining the fluid
As mentioned earlier, it is necessary to get rid of the liquid even when replacing the thermostat. In addition, you need to drain the antifreeze when replacing the nozzles, water pump, repair of the stove. Therefore, you need to know how to drain the coolant during scheduled maintenance of vehicle systems. It is worth noting that antifreeze has some resource. It contains additives that evaporate during the operation of the car. These additives are needed to lubricate the water pump, which rotates when the engine is running. If water is added to the cooling system, the pump will no longer be lubricated, which will lead to its premature wear.
Additives that are contained in antifreeze allow the pipes to work in a gentle mode. Rubber lasts much longer, does not crack, therefore, there is no need to monitor its condition. But these additives disappear, because they do not withstand the constant sharp temperature difference. The approximate service life of antifreeze is 90 thousand kilometers. From here we can draw an analogy, because you need to replace the liquid pump with the same mileage. The conclusion is this: when replacing the pump, it is necessary to fill in fresh fluid.
How to drain coolant
Before draining the coolant, you need to prepare for this. Of the tools and fixtures you need a capacity of about 10 liters. It is quite enough to fit all the liquid that you will drain. In addition, you need a key at 13. It is advisable to use a socket or cap, as it is more convenient to work with them. In rare cases, pliers may be required. If you have engine protection installed, you need to remove it. So, there are two drain holes - directly in the block of the internal combustion engine and in the lowest part of the radiator. But note that getting rid of all the fluid is quite difficult. Therefore, you need to resort to some tricks.
About them will be discussed below. First of all, you install a container under the drain hole on the radiator. If necessary, cover the generator with a piece of film. Please note that the engine must be cool so that you do not get injured. In sealed-type cooling systems, fluid will not flow out until you begin to unscrew the plug on the expansion tank. After all the antifreeze has poured out of the radiator, you need to close the drain hole in it. Using a 13 key, unscrew the plug in the engine block. Similarly, get rid of antifreeze in the cooling jacket.
Little tricks
But there are small nuances that will help you completely get rid of the fluid in the system. It is worth noting that not everyone knows how to drain completely coolant. And to do this is quite simple. Do not forget that the stove is connected to the cooling of the motor. Therefore, it must be fully opened so that all liquid is removed from the radiator. In addition, you can do a little trickier - put the car in such a way that its back is higher than the front. This will allow antifreeze to flow out through the hole in the radiator. In this case, even from the stove, it will be directed to the main hole. The same can be done when filling the coolant. The only difference is that the front of the car should be higher than the back. Thus, antifreeze will tend to fill the radiator of the stove as much as possible. And now a little about how to refuel the system.
Coolant fill
Before starting to fill the coolant in the system, make sure that all the drain holes are tightly closed. This will avoid unnecessary costs. The procedure for filling the cooling system on the “classic” and on the VAZ family is slightly different, starting with model 2108. The latter used a sealed system in which the liquid is under a certain pressure. It is regulated by two valves, which are located in the plug of the expansion tank. Hence the conclusion - to drain the VAZ-2110 coolant, you will need to open the plug. There is another small feature - as such, pumping the system is not provided. It is enough to fill in antifreeze, warm the engine to operating temperature and let it run for a while. But in the "classic" you need to act in a slightly different way. In general, difficulties with refueling the coolant system should not arise. The main thing is to know exactly how much fluid is in the system.
findings
Now you have an idea of how to drain the coolant, Nexia or the domestic ten, it does not matter at all. The work is carried out similarly both on domestic machines and on imported ones. True, there are small features in each car model. For example, the location of the drain holes may not match. But they will still be located on the radiator and engine block, because these are the largest elements of the cooling system. In the engine, a powerful heat transfer of the liquid occurs, and in the radiator the latter reduces its temperature.