We independently change the brake fluid on a VAZ 2110

According to statistics from the European Motorists' Community (ECA) for 2015 - 2021, 23% of accidents are caused by a faulty brake system.

Owners often underestimate the importance of brake circuit prevention (hereinafter referred to as TC). Late replacement of friction linings, late fluid renewal and monitoring of fluid levels are the most common factors.

The process of independently servicing the fuel tank and replacing the fluid is not at all difficult, but it requires attentiveness on the part of the technician. Violation of the regulations is unacceptable.

What brake fluid should be used in a VAZ 2114 car

According to the manufacturer's recommendations, set out in the VAZ 2114 operating instructions, the “update” of the TZ is carried out every three years or 45 – 50 thousand km, whichever comes first.

Since 1995, DOT-4 has been added to the brake circuit. Previous classes were canceled due to ineffectiveness and non-compliance with standards.

In the European Union, DOT-5 and even DOT-6 are used for transport vehicles, but for domestic transport the fourth generation is sufficient.

TJ has one significant drawback - absorption of moisture and condensation. The molecular structure is hygroscopic. The more water absorbed, the fewer nutrients inside and the weaker the structure.

Fresh DOT-4 has a boiling point of 245 degrees Celsius; after a run of 50–60 thousand km, the boiling point is reduced to 145–150°. Which can lead to an emergency if untimely prevention is not performed.

Service station technicians do not recommend mixing different types and classes of fuel fluid, despite the fact that many manufacturers do not prohibit this. There is a marketing component here.

What is the function of brake fluid

The brake fluid transfers kinetic energy from the cylinder to the pads when the brake pedal is pressed. The length of the braking distance required to completely stop the car depends on the completeness and timeliness of the transfer of pressure.

Often an old car leads to brake failure. Which is extremely dangerous when driving at high speeds.

You can update the TZ yourself; it is not at all necessary to contact a service station if the factory warranty has already expired.

Note to the driver!!! DOT-4 is an aggressive liquid; if it comes into contact with the skin of the hands, it can cause an allergenic reaction. Be extremely attentive and careful. Don't forget rubber gloves.

How much lubricant is in the circuit: the volume of lubricant in a VAZ 2114 car is 1.0 liter. Buy one and a half liters so that you always have a supply of bunkers at hand. The manufacturer of the bunker is not important, the main thing is that the liquid is class four.

The most popular are American and European brands, namely: Castrol, Liquid Moly, Shell, Mobile, Neva, DOTs.

To replace you will need:

• new DOT-4;
• plastic container for draining waste;
• rubber hose to change the “lubricant”;
• key to “10”;
• rags;
• additional lighting;
• new rubber boots on the working cylinders if the previous ones have become unusable.

Replacement

A certain set of tools and materials is required for independent coolant. Set contains:

• Brake fluid - 500 millimeters; Set of wrenches;
• Screwdriver Set;
• Transparent flexible hose;
• Pan for draining old brake fluid;
• Dry cloth for cleaning surfaces.
• You will definitely need the help of another person to do the job, so one person should be inside the machine and the other outside.

Let's move on to the procedure.

Unscrew the cap on the master cylinder reservoir and place it on a prepared surface. The plug coincides with the float of the hydraulic fluid level sensor, so be careful, there may be a toxic and dangerous substance on it.

• Unlock the rear brake sensor with a screwdriver. It is simply inserted between the plate and the piston. Made.
• Insert a screwdriver.

Clean the right rear brake release valve of any accumulated dirt and dust, and then remove the rubber cap covering the valve.

• Connect a flexible, clear hose to the valve connector and place the other end of the hose in a container to drain the fluid.
• Approximately every two seconds, press the accelerator pedal four times in a row until it stops. After the fifth press, the pedal is locked in the tightened position.
• Unscrew the valve at least half a turn. As the brake fluid drains, the brake pedal will gradually lower.
• As soon as the liquid stops flowing, close the valve.
• Don't forget to check the fluid level in the tank.
• As the old stuff is pumped out, add some new stuff. This will prevent air pockets from forming inside the system.
• Fill the reservoir with fresh fluid until all the old fluid has drained out and new, clean fluid flows through the hose into the reservoir.
• Once you are done with the right rear wheel, move to the left front wheel and follow the same procedure. Thanks to this movement along one circuit, you can completely get rid of the old coolant.
• Similarly, remove the coolant from the second circuit in the same order. After draining the water, close the valves with plugs and fill the new compensator to the required level.
• Care– first of all

After completing the replacement, be sure to bleed the brakes. It is strictly not recommended to drive on the road without it, since the brakes may simply not work.

Flushing your car is a preventative measure to ensure stable brake performance. The point is to remove foreign liquid and excess air.

Why bleed the brakes?

Air and excess fluid can appear in the system for various reasons. Namely:

Hoses are damaged and their integrity is at risk;

• Poor quality brake fluid is used;
• System components or brake fluid have been replaced;
• The seal of the car was broken.
• Each brake system, due to its design, can spontaneously accumulate moisture. Therefore, pumping should not be ignored under any circumstances.

In fact, the master cylinder can, but sometimes there is no other way. To get started, we recommend watching a training video where you can clearly learn all the nuances of the procedure.

How to properly fill brake fluid on a VAZ 2114

The procedure for replacing the TJ is as follows:

• Place the car on a roadside overpass (inspection hole);
• Open the hood, unscrew the cap from the expansion tank of the master brake cylinder;
• If necessary, remove the wheel after hanging the car;
• Ask your partner to bleed the brake pedal and hold it in the down position;
• Remove the rubber cap on the working cylinder, put the hose on the grease fitting, and lower the end into a plastic container;
• Using the key “10”, unscrew the grease fitting, drain the fuel fluid, tighten the valve;
• Repeat the pumping procedure until clear DOT-4 liquid flows from the hose.

In practice, 3–4 flushes are enough to update the system. At the same time, do not forget to replenish the missing amount of DOT - 4 in the expansion tank after each cycle. Otherwise, you risk introducing air into the system, which is extremely undesirable and dangerous.

After updating the contour of one slave cylinder, move on to the next one. Don't forget about the diagonal principle. DIY replacement completed.

Brake fluid replacement process

If you decide to change the brake fluid on your VAZ 2114 yourself, you should prepare the necessary tools in advance and invite a friend. It is difficult to perform such a procedure alone, so to save time you should find an assistant.

The step-by-step process of replacing DOT 4 in the “four” looks like this:

1. Stop the car on an overpass or pit.
2. Remove the cap from the TJ tank and move to the rear right wheel.
3. Remove the cap from the bleeder fitting.

4. Take an empty container and fill it with some DOT 4.
5. Next, put the hose on the fitting and lower its second end to the bottom of the container with the “brake housing”.
6. Now you should press the brake pedal about 7-9 times. For this you will need an assistant.
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7. Unscrew the fitting a few turns and, while pressing the pedal, drain the used DOT-4.
8. When there are a couple of centimeters of brake fluid left in the reservoir, screw the fitting back on and release the pedal.
9. Fill the tank to the maximum level and continue the procedure until pure DOT-4 comes out of the tube.
10. Carry out this procedure on the remaining wheels.

Important! When carrying out work, the following order should be observed: rear right wheel, front left, rear left and front right.

In order to prevent air from entering the system, do not allow the liquid level in the tank to drop to a minimum. Periodically check the brake fluid reservoir for leaks or damage. Damaged brake hoses that allow air into the system can also be a reason for changing the fluid. Despite the fact that the durability of hoses is high, there is always a risk of mechanical damage due to friction if installed incorrectly.

Keep in mind that the “four” system includes about 800 milliliters of DOT-4, so to carry out all pumping procedures you will need at least one liter of TJ. You should not mix different types of fuel fluid with each other. If the system previously used DOT-3, then the new class of “slurry” should be filled only after the old waste has been completely drained.

Signs of brake fluid loss of quality

• Increasing the length of the path to a complete stop of the car;
• Pressing the brake pedal requires force;
• The pillbox in the expansion tank changed color from light to dark;
• At the place where the tank is installed, traces of lubricant leakage are visible, the level is below normal;
• The yellow indicator light is on on the dashboard.

If one or more signs are detected, stop the car, turn off the engine, and inspect the brake circuit and master cylinder. If traces of depressurization of the circuit are visible, then call a tow truck to deliver the car to a service center. Subsequent operation of the technical device is unsafe.

Causes of brake fluid leakage in VAZ 2114

You can understand that the amount of brake fluid is insufficient by looking into the reservoir. Also, sometimes, when approaching a car, you can see stains of leaked chemicals under it. And when driving, the system begins to work incorrectly: the brake pedal is felt, and the quality of braking deteriorates. In addition, an exclamation mark indicator may light up on the dashboard and will not go out when the car is released from the handbrake. All this often indicates a leak. Its main reasons may be:

1. Crack in the tank. This problem can be easily detected by looking under the hood. A cracked tank should be replaced immediately.
2. Hoses. When a leak appears, cracks and other defects, as well as traces of liquid, can be seen on them. To the touch, such hoses become inelastic and rigid. If such defects are detected, worn parts must be replaced.
3. Brake cylinders. Their malfunction is a little more difficult to detect than all other causes of leakage due to the “four” drum brakes. Therefore, to check the brake cylinders, you will have to remove the drums. If defects are detected, it is recommended to replace the cylinder assembly. This part for this car is inexpensive. Therefore, there is no point in disassembling it and replacing individual elements.
4. Master brake cylinder. Most often, its sealing cuffs wear out. It is not difficult to notice their wear upon inspection. In this case, the elements change. You can also see pockets of corrosion or mechanical damage on the cylinder. In this case, the entire part is replaced.

If a leak appears from the system, you cannot use the car until the problem is eliminated. It is very dangerous! You can identify and fix problems yourself. But, if self-diagnosis or repairs cause difficulties, you need to urgently contact a service station.

Recommendations for servicing the brake circuit of the VAZ 2114

• Conduct scheduled technical inspections of the vehicle in a timely manner;
• When purchasing, carefully check the catalog numbers with the data specified in the instruction manual;
• Use the services of certified points of sale.

Service station experts recommend purchasing DOT-4 on semi-synthetic and synthetic bases. It is “synthetics” that meets many modern requirements and quality standards.

Mineral-based lubricants are not always effective for high speed conditions and systematic loads. If you have any difficulties choosing a technical vehicle for a VAZ 2114, contact service station specialists and auto store managers for help.

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.

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Pillbox 4 Ferodo

The higher these parameters, the better. Choose wisely.