How to change the brake fluid on the machine?

Motorists, especially beginners, often do not realize that in cars it is necessary to change and other technical fluids, except for the oil in the engine. One of these mixtures is inhibitory. The safety of the driver depends first of all on her. Each car owner must know how to correctly change the brake fluid. Consider this process using the example of machines of different brands.

Why do I need to change the brake fluid?

It works in extremely difficult and even extreme conditions. The liquid is often prone to overheating - even with a quiet ride it can warm up to 150 ° C. If the car is operated more aggressively: traffic with a trailer, travel on mountain roads, intensive driving, then this technical fluid easily warms up to 180 ° C. If the machine is stopped, the temperature can reach even 200 ° C.

Naturally, manufacturers of technical fluids take into account high loads - in the characteristics of popular products, which are now offered in the auto parts and accessories market, boiling points from 205 to 265 ° C are indicated depending on the brand. However, during operation it often happens that this liquid absorbs moisture - this dramatically lowers the boiling point. For example, for one year, the brake fluid can gain from 2 to 3% of water - hence, the boiling point can drop to 30-50 ° C. So, it will begin to boil already at 145-160 ° C. It is simply dangerous to operate such a car. In the braking system, steam locks are formed. Due to the sudden expansion of the bubbles, part of the brake fluid is forced into the reserve tank. When the driver presses the brake in an emergency situation, the remaining liquid simply does not create the required pressure level. Accordingly, the pedal will fail. It should be remembered that this is a very serious composite and you need to constantly monitor its condition and know how to change the brake fluid if its level has become below normal.

How often do I need to replace?

Complete with any modern car there is a service book in which the manufacturer recommends replacing this fluid no more than once every two years. But most car owners for some reason do not consider it necessary to adhere to these recommendations. So, instead of figuring out how to change the brake fluid completely, just periodically add it to the tank to a certain level. In this matter it is important to consider how the car is operated - how actively the brake system is used in extreme and high-speed modes.

It was already written above that the main reason for the replacement is penetration into the hydraulic composition of moisture. This happens in 2-3 years. It is at this time that a replacement is needed. When and how do I change the brake fluid? This is often indicated and produced on containers, which should also be noted.

Misconceptions of novice drivers regarding brake fluid

Let's consider some typical misconceptions. They happen to those who just entered the world of cars, bought their first car and tried to operate it correctly.

Closed modes of operation

The brake system has special holes for air movement. The liquid itself is very hygroscopic, and as already noted, absorbs moisture. This leads to the fact that over time it loses its properties. Therefore, do not think that if the braking system has a closed mode of operation, then nothing should be changed. In fact, it is not only desirable, but necessary.

DOT-4 is suitable for any modern car

This is another misconception. If you do not go into the types and types of products for brake systems, you need to say that the novice driver should not experiment. Safety depends on the braking system. It is important to follow the instructions of the car manufacturer, and also you need to know how to change the brake fluid on a particular car model.

How to check the quality of the brake fluid

In the automotive market, you can find fakes. In order to check the quality of the composition, a special tester is used. With this device it is possible to determine the boiling point of the hydraulic fluid and on the basis of the readings determine whether it is qualitative. So, at 175 ° C - the agent is effective, if from 165 to 175 ° C - it is better to replace. If the reading is lower than 165 ° C, this is an urgent replacement.

How to change the brake fluid on the WHA

To make a replacement, it is better to use someone's help, because, as practice shows, the process will be much more difficult without outside interference. The first thing to do is to unscrew the cap of the brake tank, then, you have to put the part so that the liquid does not drain from it. Then, with the help of a large medical syringe or pear, you need to extract the amount of hydraulic composition that is in the tank. However, do not pull everything out - it will be enough if the amount falls to the minimum mark. If you take the entire volume, then there will be a depressurization and you will have to carry out the bleeding of the brakes. After the selection, a new liquid is poured into the tank to the maximum level. Now it is covered with a lid. Next, the car owner should get under the bottom of the car, and the assistant - to sit behind the wheel. The owner of the car removes the protective cap located on the bleeder - to search for this part is necessary on the calipers of the wheels (often it is located in the upper part of it). It is necessary to put a tube with the hose fixed to it on any of the unions, and the other end of the hose, meanwhile, is lowered into the container with brake fluid. It should be dipped in a container for the entire time of draining. Next, the assistant should smoothly apply the brake pedal 5-10 times. It is necessary to act up to the limit, and the last time the pedal must remain fully pressed into the floor.

At this point, the union is loosened by 2 or 3 turns - as a result, the already used liquid will flow into the vessel. You need to tighten it when it's new. Such an operation must be done with all the wheels. Here's how to change the brake fluid on VAZ 2110, 2112, 2114. In fact - it's not difficult and you can perform this operation yourself.

Chevrolet Lacetti

For work, it's better to drive the car over a trestle or pit. The first step is to unscrew the tank, and then use a syringe or pear to drain the old working fluid, and then - a new one is poured. Then beginners are lost - do I need to pump? What do specialists say in response to a question, how to change the brake fluid of Lacetti? Bleed in this case is necessary. Before producing it, you should check the level in the reservoir. Then unscrew the union on the support of the rear right wheel, it is put on the hose, which is immersed in a container with liquid. Further, you need help - you should press the brake pedal several times and hold it in this position. All this time the old hydraulic mixture will flow from the hose. As soon as a new, cleaner liquid begins to go, the screw is immediately twisted and a protective rubber cap is put on it.

This process must be performed for the left front wheel, left rear and right front. Here's how to change the brake fluid yourself without having to travel to service stations.

Replacing the brake fluid on vehicles with ABS

To solve this problem, it is best to contact the service station. Car repair specialists will perform this procedure quickly and efficiently. But if this is not possible, you can make a replacement yourself.

Many do not know how to change the brake fluid from ABS. In fact, there is nothing complicated. It is enough to remove the lid from the tank, put the hose on the union, and put the other end of the hose into a container full of liquid. Next, start the engine and leave it at idle. With the help of the brake, the old liquid will gradually be displaced - a new one should take its place. This operation is carried out for each of the wheels.

CIA

On cars of this brand, the replacement can be done in two ways - already known, with the use of pumping and without it. So, the machine is installed on a trestle or pit. Further, a syringe or a pear is pumped out the old hydraulic composition from the tank, adding a new one. To speed up this process, hoses are put on each hose and lowered into bottles.

Then all the unions are unscrewed - it is important to make sure that the liquid has flowed from all the hoses. In this case, you should control the amount of the mixture in the tank - if the level decreases, you need to refill it. When the volume of the brake fluid in the front left-hand vessel is about 200 grams, it is tightened. When there is the same volume in each container, the operation is terminated. That's how to change the brake fluid ("Kia Sorento" is no exception) without the need for pumping.

Conclusion

The process of replacing the brake fluid is not as complicated as it might seem. You can do everything yourself and save a certain amount.