Perhaps the most important component in any car is the braking system. It is she who allows you to slow down the car in time, ensuring traffic safety. Today, most passenger cars use a hydraulic brake system. And cars of the Samara-2 family are no exception. Car owners should be aware of the circumstances under which the VAZ-2115 brakes should be pumped and how to do this correctly. About all this - later in our article.
Signs to Watch Out For
In what cases do you need to perform this operation? The main reason that causes pumping is the air that has accumulated in the system. It can get inside for various reasons. As a rule, this is a malfunction of the brake cylinders or leaks in the hoses. Very rarely, air enters due to a weak connection of the fittings, but this possibility should not be ruled out.
How to determine if air has formed in the system? The driver will notice a change in the behavior of the car. So, when you press the pedal, the car will not slow down so effectively. And the pedal itself will be more sluggish and have an increased stroke. A critical situation is when it completely falls to the floor, and the car barely slows down. In this case, it is urgent to pump the front and rear brakes of the VAZ-2115.
This operation is also required when replacing brake fluid. If it has not been updated for more than three years or has acquired a black color, its replacement is definitely required. In addition, some fluid changes when buying a car in the secondary market, when there is no confidence in the reliability of the system. Another pumping may be required for any work with the brake system. This can be a replacement of the tank, working or main cylinder, hoses and other elements. It does not pump only when replacing the pads, since the working cylinders are only recessed here (both in the case of the front disk mechanisms and the rear drum mechanisms).
Pumping pattern
How to pump the brakes on the VAZ-2115? To do this, you need to know the sequence of work. They operate according to the “crosswise” pattern. That is, the air on the rear right wheel is first removed. Next, go to the front left. After that, pump the rear left, and then the front right.
Necessary tools and materials
To get to the fittings in the absence of a viewing hole, we need to unscrew the wheels. Therefore, you need a jack, stops and a wrench. If there is a pit or overpass, the wheels can not be unscrewed. You will also need a new brake fluid. On cars of the Samara-2 family, RosDot of the fourth class is used. In addition, we need a plastic bottle and a hose that will be worn on the fitting (so that the liquid does not splash in different directions, but goes into a specific container). To unscrew the fitting, a standard 8 key is required.
Preparation for surgery
So, we put the car on a hole or on a flat surface, then open the hood and remove the connector of the brake fluid level sensor. Then we unscrew the cap and add liquid to the maximum level. After that, screw the lid.
Please note: if you use a lift during work, when pumping the rear brakes, you need to put the slot in the brake force regulator (it is also called the "sorcerer"). To do this, you can use a screwdriver, installing it between the shaft and the bracket.
When pumping the front brakes, this slot must be removed.
How to pump the brakes on the VAZ-2115? In the course of work, we will need one assistant. He will press the brake pedal on command.
Getting to work
Let's look at how to pump the brakes on the VAZ-2115 with your own hands. So, first we need to find a fitting on the back of the rear wheel drum.
It will be closed with a protective cap. We need to remove the last one. Next, put on the hose fitting and direct it into a plastic bottle. After that, we need the help of a second person who, on command, will press the brake pedal several times. It is necessary to do this about four to five times with an interval of one to two seconds, in order to create pressure in the system. At the last press, the pedal is held in the floor. At this moment, we carefully unscrew the fitting. It is important to unscrew it smoothly, since at first the liquid will go under very high pressure. As the fluid exits, the assistant will feel that the pedal falls into the floor.
We need to monitor the amount of air in the fluid. If it was with a lot of bubbles, the procedure must be repeated again. Before creating pressure with the pedal, the union must be tightened. Then everything is according to the pattern. The assistant holds the pedal, and we unscrew the fitting and look at the state of the fluid. If it comes out quietly, does not "spit," then there is no air in the circuit. On this, you can twist the fitting and put on a protective cap on it.
How to pump the brakes on the VAZ-2115 next? After that, they move on to the next, now front wheel.
But before pumping the brakes on the VAZ-2115, you need to add fluid, since part of it was poured through the fitting. The flow pattern is the same. First unscrew the fitting, put on a hose, create pressure and unscrew the mechanism. And so on until a normal fluid goes.
Conclusion
So, we examined how to pump the brakes on the VAZ-2115 ourselves. As you can see, this operation is not very complicated. Therefore, at the first sign of a soft pedal, you need to deal with the removal of air from the system. It is also worth inspecting the condition of the hoses and cylinders, since after pumping the problem may recur. Air is only vented with a working brake system.