How to pump the brakes with and without the helper

The brake system of the car is almost the most important in its composition, and in driving safety it plays a key role. We rarely notice the work of the brakes, because they have become for us as normal as, for example, a TV, refrigerator or other items that surround us in everyday life. For the normal operation of this system, complete tightness is required, which is provided by the release of air from the conductive tubes and hoses.

In this article we will briefly consider how to pump the brakes. This process is quite laborious, so it requires certain skills, as well as tools. First, let's talk about the theoretical side of the question. We all know that the unique property of liquids is their incompressibility, it is used as the basis of the entire system. So, when you press the pedal we push the piston, which is in the main brake cylinder. From it, the tubes go out, through which the brake fluid moves under piston pressure to the calipers and to the working cylinders. This pressure, I must say, sometimes reaches 3 MPa. After falling into the support or into the working cylinder, the liquid transfers the pressure to the piston, and it, in turn, to the brake shoe.

Now consider how to pump the brakes in practice. In general, there are many ways. To implement them, various devices are used that allow one to pump the brakes. Let's start with a simple one. The very first method tells how to pump the brakes with an assistant. For this, a lift or other complex equipment is not required. First you need to fill the tank, located above the main brake cylinder. Now we must start from the farthest wheel. The assistant must make a few depressions on the pedal - this will create pressure in the system. Now the hose is put on the hose of the caliper, and it is unscrewed. Then it is twisted (all this happens with the pedal depressed), after which the procedure is repeated until air bubbles cease to flow into the hose. Further we pass to another wheel of the same axis. With him, we conduct all the described actions and move to the other axis. At this time, you should constantly monitor the level of fluid in the tank. This is one way to pump the brakes.

Consider another. He will tell you how to do it yourself. Bleeding brakes without an assistant is not such a difficult task, only it takes a little longer and requires a larger brake fluid supply. The car needs to be installed on a hill, it's better if it's a lift. Then one end of the hose should be put on the fitting, and the second - on the container with a vacuum. With this role, a 250 ml pear can perfectly handle. Now unscrew the union, after which we do a few depressions with the pedal. We constantly need to monitor the vacuum. If it does not exist, the air will go back to the system, and everything will have to be done anew. With other wheels, the procedure is the same.

Here are two main ways that can be useful when pumping the brakes. In addition, it is worth remembering about the harmfulness of the brake fluid and thoroughly wash your hands after work. In rubber gloves do all this undesirable, because the rubber under the action of a similar liquid melts, there may be burns.