Replacing brake fluid on a VAZ 2114 - which one to choose, when to change it

The VAZ 2114 car is equipped with a brake system with a hydraulic drive. A special feature of the vehicle on this machine is the diagonal distribution of the brake circuits. If one of them fails, the second provides braking with high efficiency. The working substance for vehicles is brake fluid VAZ 2114 “Rosa”, “Rosa-3”, “Rosa-DOT-4”.

Replacing brake fluid VAZ 2114

WHEN TO CHANGE

The main reason for changing brake fluid is moisture getting into the system. This leads to unpleasant consequences. For example, it can simply freeze in winter (this cannot happen with a clean one), and this can cause not only brake failure, but also damage to pipes and other elements of the car. And replacing brake hoses on a VAZ2114 is not a pleasant matter. However, this process is quite long, and takes about 2-3 years, in the absence of breakdowns in the system, after which it is necessary to replace the brake fluid of the VAZ 2114.

In summer this problem is also relevant. Moisture, as you know, tends to boil. So, prolonged braking can lead to exactly this, as a result of which the car simply stops braking.

Mileage and intensity of brake use also affects fluid performance. For the VAZ 2114, it is recommended to change the fluid in the entire system after 30,000 kilometers. Detailed operating rules are listed in the vehicle documentation.

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.

SIGNS OF PROBLEM

When the fluids are partially used up, the brake system begins to work incorrectly. The pedal begins to sink or becomes soft. Braking occurs silently, and the braking trail gradually increases. The car may skid when the brakes are pressed.

Having discovered one of the signs, the first thing you should do is look into the brake fluid reservoir. A cloudy color and the presence of sediment are an alarming signal; it’s time to go shopping, because you urgently need to change the brake fluid on your VAZ 2114.

Change brake fluid immediately - if necessary

Vehicle malfunctions leading to replacement of the vehicle with a VAZ 2114

The hydraulic brake system includes many different parts that allow you to operate the brakes using hydraulic fluid. It includes:

• a tank that is attached to the gas turbine engine and is intended for filling the fuel fluid;
• metal pipelines of both circuits;
• flexible brake hoses of front and rear wheels;
• GTZ installed in the engine compartment;
• working brake cylinders of front and rear wheels;
• dual-circuit pressure regulator;
• a sensor showing at what level the fuel fluid is located;
• a vacuum booster, the task of which is to create working fluid pressure in the pipelines of the circuits in order to ensure effective operation of the brake systems on the wheels during braking.

A car’s vehicle is one of the main systems that ensures the safety of the driver and passengers of the car, therefore regular preventive inspection of all elements of the vehicle is mandatory for the owner of the car.

The brake fluid on the VAZ 2114, according to the recommendations of technical specialists, is replaced every three years or no more than after 45 thousand kilometers of the vehicle.

At the same time, during the operation of a vehicle, malfunctions periodically occur in its braking system and especially in the hydraulic drive, leading to the need to replace the brake fluid. Knowledge of these malfunctions and the reasons leading to them can help the driver avoid serious troubles on the road, since in this case he can promptly identify the failure and take measures to eliminate it.

Malfunctions in the vehicle resulting in the need to replace the vehicle:

1. Leaks from the working brake cylinders leading to significant loss of fuel fluid.
2. The formation of air pockets in main pipelines and flexible hoses, which are formed as a result of leaks in vehicle units.
3. Rupture or fraying in the flexible hoses on the wheels, in this case the brake hoses on the VAZ 2114 need to be replaced. Damage to metal pipelines is also possible; as a rule, a leak forms due to “chasing”. In both cases, the liquid quickly flows out of the vehicle, so at the slightest sign of disorder in the vehicle, these parts should be checked first.
4. Damage or swelling of the sealing rings in the GTZ or wheel cylinders. This also leads to leaks.
5. Leakage of fuel fluid through the sealing rings of the rear wheel RD pusher.
6. There may be a leak in one of the brake circuits. In this case, partial failure of the brake pedal occurs.
7. Quite rarely, but metal pipelines become clogged.
8. As a result of mechanical damage, failures of the GTZ, RTC, vacuum unit and other vehicle elements are possible. To eliminate these damages on the VAZ 2114, replacing the brake fluid is a prerequisite.

REPLACEMENT PROCESS

Before starting work, you need to stock up on the following tools:

• Hose 10-15 centimeters long and 6 mm in diameter;
• Wrenches for 8 and 10;
• Plastic bottle;
• Gloves (work clothes and safety glasses are also a good idea);
• Hydraulic fluid (there are a lot of manufacturers, each with its own characteristics).

Having collected all the tools, you can start working. The procedure is not complicated and does not require any professional skills. Most motorists do the replacement themselves.

It is extremely difficult to do this kind of work alone, so I recommend taking a friend with you who will undoubtedly help in the process. This will not only save time, but will also greatly simplify the procedure.

We are changing bunker - 4 in the VAZ 2114 in stages:

1. We park the car on a pit or overpass;
2. Remove the cap from the brake reservoir;
3. We go into the pit. Here we need a fitting located on the rear right wheel;
4. It is closed with a cap, which we remove;
5. Take a bottle and pour some DOT-4 into it;
6. We put the hose on the fitting and lower the other end into the bottle (do not forget to lower it to the bottom);
7. Now you need someone to press the brake pedal. Smoothly 7-8 times in a row, and the last press all the way and hold;
8. Unscrew the fitting a couple of turns;
9. We observe how the waste product comes out;
10. When 1-1.5 centimeters remain in the tank (it is important not to be late, otherwise air will enter the system), tighten the fitting and release the pedal;
11. Add the missing DOT-4 to the tank (up to the Maximum mark);
12. Then we repeat the procedures with the fitting and pressing the pedal until clean pillbox flows into the bottle;
13. We tighten the fitting and move on to the next wheel.

There is a specific order in which the replacement must be performed. After the left rear wheel, we need the right front, then the left rear and finally the right front. If you started doing everything according to the instructions, then this is the sequence in which the bunker runs.

What is needed for replacement?

Before starting replacement work, you should stock up on a set of tools, rags and a new brake guard. It should be understood that it contains active chemical elements that can cause burns if they come into contact with the skin. Having clean water on hand is also a good idea. Replacement Tool Set:

• Keys for "8" and "10";
• Containers for collecting waste “slurry”;
• The hose is 15-20 centimeters long.

Gloves should be used during operation. You will also need a partner to pump the system. Carrying out this procedure without an assistant is possible, but requires special equipment.

WHICH LIQUID TO CHOOSE

The technical documentation describes in detail recommendations on what brake fluid to fill in the VAZ 2114. However, many motorists choose the product individually for themselves. Some prefer Bosh bunkers, others Ferodo or TRW. There are many brands of manufacturers with different technical properties to choose from. If the recommended product does not suit you in any way, you can contact a service station for help. There they will describe to you in detail the pros and cons of all famous brands. In our case, DOT-4 synthetic is recommended. This is an excellent brake fluid for VAZ 2114.

When choosing, you can pay attention to the technical properties of the product. The best samples should have high scores in the following parameters:

• Boiling temperature;
• Viscosity;
• Anti-corrosion.

DOT 4 Ferodo
The higher these parameters, the better. Choose wisely.

Selecting brake fluid and the procedure for replacing it on a VAZ 2114

For the normal functioning of the vehicle’s vehicle with maximum efficiency, it is important for the car owner to correctly select the working fluid for the hydraulic brake drive. Modern TG, such as “Rosa” and its varieties, are based on polyglycols and this accounts for from 93 to 98 percent of the total composition. The rest is various additives that are necessary to combat oxidation of fuel fluid and prevent corrosion of metal parts of the vehicle.

When purchasing a vehicle, you need to pay attention to the following parameters:

• boiling point, it should be high to reduce the likelihood of plug formation from steam bubbles;
• good viscosity, which characterizes the ability to pump liquid in the system;
• the ability to absorb water, that is, hygroscopicity;
• ability to lubricate internal surfaces;
• neutrality in relation to rubber parts of the braking system;
• oxidation resistance and corrosion resistance.

According to the TZh class for the VAZ 2114, they are marked DOT 3.

How to change the brake fluid on a VAZ 2114 - for the correct actions you need to carefully study the car’s operating manual.

Before starting work, you need to prepare the necessary tools and materials:

1. TJ in the amount of 0.5 liters;
2. keys and screwdrivers;
3. transparent flexible hose;
4. container for draining spent fuel oil;
5. rags to wipe surfaces, especially plastic and painted ones, since the liquid is toxic and aggressive to these surfaces.

To replace the turbocharger, you need to hire an assistant, because it requires bleeding the system using the brake pedal.

• Open the lid on the GTZ tank and place it on the prepared surface. The cover is combined with the float of the fuel fluid level sensor and there are remnants of old toxic fuel fluid on it.
• Unlock the rear brake lever using a screwdriver, which must be inserted between the piston and the plate.
• Clean the air outlet valve of the right rear brake from dust and dirt and unscrew the rubber cap that closes this valve.
• Place a flexible hose, previously inserted into a transparent container, onto the fitting of this valve.
• At intervals of two seconds, press the pedal all the way four times, and on the fifth press, lock it in the pressed position.
• Unscrew the valve at least half a turn. As the fuel drains, the pedal should fall. As soon as the liquid stops flowing, immediately close the air valve.
• During these actions, it is necessary to monitor the fluid level in the tank, constantly adding it to prevent an air lock. It is necessary to add and drain the fluid until new, clean fluid flows from the tube.

Brake fluid level VAZ 2114

• After the right rear brake, you need to do a similar procedure with the left front brake mechanism. Thus, the working fluid in one brake circuit is completely replaced.
• Now, knowing how to replace the brake fluid in the second circuit, all work is performed in the same sequence. After completing the work, be sure to close the valves with rubber caps and add the missing fuel fluid to the GTZ tank.

HOW MUCH TO BUY

The VAZ 2114 system has a volume of 750 milliliters. Taking into account pumping and unforeseen situations, one liter is enough. There will be some left over for topping up. There is no need to carry it with you and constantly top up the pillbox. You can buy it in any quantity at any gas station. Motorists who have been driving for several years can always find out how much brake fluid is in the VAZ2114 system.

It must be remembered that DOT-4 is extremely toxic, so spilling it on open skin is highly undesirable. Therefore, it is not worth storing it in the trunk.

Design

The task of the driver and car owner part-time is to constantly monitor the condition of the brake system.

Failure of one of its elements can lead to serious consequences. Therefore, you should know what exactly is included in the braking system.

The components of the vehicle are:

• Brake fluid reservoir mounted on the GTZ;
• Metal pipelines of two circuits;
• Flexible brake hoses for front and rear wheels;
• GTZ (brake master cylinder located in the engine compartment);
• Brake cylinders of front and rear wheels;
• Pressure regulator;
• Brake fluid level sensor;
• Vacuum booster.

Tank with fuel fluid
According to the recommendations of experts, replacement of fuel fluid is carried out once every 3 years, but at least once every 45 thousand kilometers.

REPLACEMENT

Some drivers don’t even know where to fill the brake fluid in the VAZ 2114 (even though the VAZ brake fluid reservoir is visible), not to mention the rules. DOT-4 needs to be added only if its level in the tank has dropped below the halfway point between the MIN and MAX marks. To do this, simply unscrew the tank cap and fill it to the top mark. The brake fluid volume should not exceed the maximum mark.

Do not under any circumstances mix products from different manufacturers and brands. This may lead to system failure, which will adversely affect your financial situation when contacting the service. Be sure to ask an expert how to add brake fluid.

In general, if all necessary conditions and rules are observed, everything is done quite simply. Any measures to normalize the operation of a car require certain tools and special clothing. This should not be forgotten, since contact with human skin of chemicals contained in fuels and lubricants is extremely dangerous to health.

But whatever one may say, in the quest for durability and reliability of your car there is nothing you can do. The acquired skills can be applied not only to the VAZ 2114, but also to other models of the domestic automobile industry. For example, the VAZ 2115 has an absolutely identical device.

When is brake fluid replacement necessary?

Many motorists simply top up the brake fluid, without particularly paying attention to either the recommendations from the service book or the objective signs of deterioration in braking efficiency. Meanwhile, a complete replacement of the fluid cannot be avoided if its level has dropped below the minimum mark and the corresponding symbol lights up on the instrument panel.

Of course, you can simply add fluid, but after that it is worth checking the serviceability of the brakes, since a drop in the level indicates a malfunction in the master cylinder or the fuel fluid supply system to the wheels.

Vulnerabilities of the VAZ 2114

The most vulnerable points in the VAZ 2114 brake system include:

1. Master brake cylinder - most often, leakage occurs due to wear of the sealing collar, which is subjected to stress during operation. There are also cases of installation of initially poor-quality seals. Detecting this leak is the most problematic, since liquid can go into the vacuum booster. In this case, no leaks are formed. If there are leaks on the left CV joint and gearbox, the GTZ is leaking.
2. Brake cylinders of the rear wheels - in the VAZ 2114 their cuffs are susceptible to destruction, especially in frosty weather. A leak is determined by the presence of traces of leaking brake fluid on the calipers. If there is a strong leak, there may be marks under the wheels and on the road surface.
3. Brake hoses - they are also subject to mechanical damage. If the rubber is dry, cracks will form on it. You should also inspect for leaks.