We change the brake fluid on a VAZ-2112 with our own hands

The principle of braking is based on the transfer of kinetic energy from the brake pedal to the working cylinder of the wheel through brake fluid (hereinafter referred to as TF).

It is the TJ that helps reduce speed and stop the vehicle. After pressing the brake pedal, under the influence of pressure, the fuel fluid flows to the working cylinders. The brake pads compress, squeezing the disc, the car slows down and stops.

During the systematic operation of the car, the rubbing surfaces wear out and the liquid loses its useful properties. The process of replacing the TJ yourself is not complicated, but it requires attentiveness on the part of the master. It is unacceptable to disrupt the sequence of actions.

Working fluids and their volume

What and how much to fill in LADA (VAZ) 2110

Fuel tank – 43 l.
Fuel type - gasoline AI-92, AI-95. Engine oil should be changed every 10 thousand km. At the same time, a new oil filter is installed. Recommended liquid with API quality level: SG, SH, SJ. Refill volume – 3.5 l. It is also used for the crankcase of the power plant.

Antifreeze must be changed every 60 thousand km or once every two years. The following coolants are recommended: Tosol AM, Tosol A-40M, OZH-K-HT, OZH-40-HT, OZH-K-SK, OZH-40-SK, OZH-40, TOSOL-TS, AGIP ANTIFREEZE EXTRA, Glisantin G 03.

How much brake fluid do you need to change?

Maintaining the required level of brake fluid is necessary for the proper operation of the vehicle's braking system. How much is needed can always be found in the service book, but often car owners are not used to looking into it, but act empirically or look for the answer on the Internet. It is these users that we will try to help figure out the question of how much brake fluid is needed for replacement and which one should be poured.

Brake fluid is the working fluid of the brake system, with its help the force created in the master cylinder is transmitted to the wheel pairs.

If the brake fluid level is below the minimum mark (by the way, this will be indicated by the corresponding icon on the instrument panel - a red circle with waves inside), then you need to top it up. It also doesn’t hurt to check the master brake cylinder and the brake system as a whole, since a decrease in the fluid level may indicate a malfunction or wear of the master cylinder gaskets. As a rule, the brake system of a passenger car contains from 0.55 to 1.0 liters of brake fluid. And its specification can very often be indicated on the body of the expansion barrel or its cover.

When checking, do not forget to pay attention to the color of the liquid . The new TJ is transparent with a yellowish tint. During operation, it changes its color and becomes dark, this is mainly due to the accumulation of various impurities. If the fluid has darkened, this may mean that a complete replacement is necessary and simple topping up is not enough. Experts recommend replacing brake fluid approximately every 2-3 years , this is the optimal interval in accordance with hygroscopicity and exposure to temperature loads. For the brake mechanisms to function properly, the fluid must have a number of properties and also meet a certain standard.

Preparatory stage

First of all, let's unlock the pressure regulator. Why is a screwdriver or other gasket inserted between its piston and the plate? The air valve fittings of the VAZ rear cylinders and brake calipers are likely to be covered with a decent layer of dirt and dust. It should be thoroughly cleaned before starting work.

Unlock the pressure regulator

Open the hood of the car and the lid of the brake fluid reservoir. Then we unscrew the fittings on all four wheels and let the fluid drain from there by gravity, taking with it all the debris accumulated in the system. We wait for some time and fill the reservoir of the VAZ 2110 with new brake fluid.

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Do not close the fitting until the leaking liquid stops bubbling. Thus, the air is replaced by brake fluid. After all the fittings have been closed, the system needs bleeding, since there is still air in the lines.

Types and properties of fuel fluid

Old and new brake fluid

Any brake fluid has 93-98% of the main composition and from 2 to 7% of additives, which, in fact, are the key component for imparting the declared characteristics.

In general, if you look at it this way, the properties of brake fluid depend on the combination of its components. Depending on the composition of the base, TJ is divided into 3 groups.

Types of brake fluids:

1. Mineral (mineral oil LHM) . They consist of alcohol and castor oil.
2. Glycolic . Developed on the basis of polyglycols and their esters.
3. Silicone . Manufactured from silicon-organic polymer products.

Regardless of the type and composition, all brake fluids are divided into two classifications.

Classification of TJ:

1. By viscosity.
2. By boiling point:

• for “dry” liquid (without water);
• “wet”, which contains 3.5% water.

If the boiling point exceeds the permissible norm, then there is a risk of a vapor lock forming in the system (as a result of moisture evaporation), which can lead to breakdown and failure of the brake pedal.

Completion of work

At this time, there must be an assistant in the vehicle interior who will carry out the pumping process. To do this, he will need to press the brake pedal with sudden movements. In this case, it should be squeezed to the lowest position 5-6 times. After the required number of presses, the pedal must be locked in its lowest position.

The cylinder air valve should then be unscrewed 1/2 turn. This will cause the fluid to squeeze out and flow through the hose. After the brake circuit is completely released, the operating pedal in the passenger compartment will fall to the floor. After waiting until the hydraulic solution has completely flowed out, the outlet valve fitting must be tightened. A similar bleeding procedure should be repeated on the other rear wheel, and then move on to the front.

Brake fluid standards

In practice, and in most cases, it is customary to use the American quality standard FMVSS No. 116 (Federal Motor Vehicle Safety Standard), which was developed by the US Department of Transportation (DOT for short). So, often, in modern cars, either DOT 4 is used on a glycol basis, or DOT 5.1 (including glycol and silicone compounds). But in cars manufactured more than 20 years ago, BSK or DOT 3 fluid can be used.

The DOT standard clearly describes such characteristics as:

DOT 4 brake fluid (meets SAE J1703&J1704, FMVSS 116, JIS K2233, ISO 4925)

• degree of viscosity;
• boiling temperature;
• chemical inertness to materials (for example, rubber);
• corrosion resistance;
• constancy of properties within operating temperatures;
• possibility of lubrication of elements working in contact;
• level of moisture absorption from the surrounding atmosphere.

In accordance with FMVSS No. 116, brake fluid options are divided into five classes, each of which is designed for a specific type of operation and even the type of brake mechanisms - disc or drum.

But you shouldn’t think that these are uniform existing standards, because in Europe there will be SAE (Society of Automotive Engineers) J1703/1704 , ISO(DIN) 4925 - International Organization for Standardization, in the Middle Kingdom, Japanese - JIS (Japanese Industrial Standard) K2233 . But in Russia and other CIS countries there is no single standard regulating the quality indicators of brake fluids, so manufacturers work according to their own technical conditions.

Use of DOT brake fluids

Since in many cases everyone is guided specifically by the American DOT standard, let’s take a closer look at all five of its classes:

1. DOT 3 – designed for low-speed vehicles with drum and disc front brakes. Boiling point 220° C.
2. DOT 4 – is poured into the brake system of high-speed vehicles that have disc brakes on both axles. Boiling occurs at temperatures of 240° and 160° C.
3. DOT 4+, DOT 4 SUPER – modifications of DOT 4, their boiling point is 260° C and 180° C.
4. DOT 5 is a silicone fluid that cannot be poured into a car with an ABS system, because it does not absorb moisture, but allows it to collect in one place. Due to the fact that the boiling point is 280°C and 180°C (for “dry” and “wet” liquids) while having low viscosity, it is usually used only in racing cars.
5. DOT 5.1 – for fast cars whose brakes are often overloaded. It is more high-tech and fluid than DOT 4, but still absorbs moisture. Often recommended for use in systems with ABS and ESP. Operating temperature 270°C and 180°C.

As for the service life of fluids of various classes, it should be noted that brake fluids of class DOT 3 have a service life of approximately 1-2 years , in turn DOT 4 - 2-3 years, and DOT 5.1 needs to be changed every 3-4 years . DOT 5 can be used for up to 5 years .

Volume of fluid in the brake system

Basically, the brake system holds from 0.55 to 1.0 liters of fluid, this depends both on whether the car has an ABS system and on the size of the car. The period for replacing brake fluid in most cars is 2-3 years of use, or 40-60 thousand mileage . To determine a more specific interval, you need to look at a specific fluid standard and driving characteristics. For example, in sports cars the TZ is changed every 5-10 thousand.

But since the question of the required volume of brake fluid in the system and its standard is asked only by owners of ordinary cars, and not premium or business class ones, we will give specific examples for cars popular in the CIS countries.

What and how much brake fluid is in some cars

How much brake fluid is in the VAZ system

VAZ cars are filled with brake fluid of the DOT-4 , but its amount in the brake system can be from 550 ml in a classic (VAZ 2107) to 1.0 liters in more modern domestic cars, such as VAZ 2110 or Kalina . But if you replace the TJ with flushing, then you should take 1.5 liters, and since there is no such packaging, you will have to buy two liter bottles.

How often to change brake fluid

Useful recommendations on how often to change the brake fluid in a car. Regulations on the frequency of changing brake fluid. More details

To properly bleed the brakes, you need to know the bleeding procedure specified by the car manufacturer. However, such mistakes should not be made. More details

Bleeding the brakes without an assistant

Bleeding your brakes can be a challenging task at times. But there is a simple way to do it without an assistant. See instructions for bleeding your car's brakes yourself. Learn more.

How to properly level up if there are no helpers?

In theory, you can bleed the brakes on a VAZ-2112 alone. There is no ABS system here, but with it everything would be simpler - there is an electric pump. And instead of a pump we will use special equipment.

None Procedure:

1. The aerator cap is screwed onto the neck.
2. One of the wheels is hung up and the structure is assembled, as in the photo.
   Air from the tire enters the tank.
3. Carry out steps 5-6 (see above), pumping one cylinder after another.

In theory, everything looks simple. But in practice, you need to monitor whether the fluid has gone below the MIN mark. To top up, do this:

Unscrew the coupling from the wheel nipple; Carefully unscrew the lid, fill the tank, and so on.

The air pressure entering the tank should not exceed two atmospheres. That's why we connected the hose to the tire and not to the pump

It is important!

What kind of fluids and how much oil is used in the LADA VAZ 2110

VAZ 2110 car of domestic production. Popularly known as “ten”. It is a representative of a small class car. It was produced for 12 years from 1997 to 2007. Despite this, it continues to be popular among Russian drivers.

The car is equipped with several types of engines, of different sizes from 1.5 to 1.6 liters. Models produced before 2000 were equipped with a carburetor, subsequent ones with an injection system. The main advantages are high ground clearance and indestructible suspension.

Filling volumes of VAZ 2112 16 valves

Car : VAZ-2112. Asks : Abramov Viktor. The essence of the question : How much oil is needed for a complete replacement in a VAZ-2112 engine?

Hello, help me with this question! I have a 16-valve VAZ-2112, produced in 2004. I bought this car recently, and it is my first! I want to prepare it before winter and change the oil, I want to change it myself, but I just don’t know how much of it should be poured into the system. Please tell me!