Replacing brake fluid Lada 2114 (VAZ 2114)

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.

Which brake fluid should I choose?

The abundance of technical fluids for a car makes the procedure for choosing a technical fluid quite complicated. Marketing gimmicks and an excessive amount of information on a bottle of “braking fluid” should not be the only reason to buy. You should choose a TJ based on the following characteristics:

• The viscosity of the liquid must remain the same at any temperature;
• The presence of boric acid in the composition, which neutralizes moisture;
• Ability to maintain effectiveness at high temperatures.

Several types of fuel fluid are classified, but most often drivers use DOT 4 class fluid. The basis of liquid from this class is compounds of esters with boric acid. This composition helps to preserve properties at any time of the year.

We recommend considering the following TJ options for purchase:

1. "Dzerzhinsk brake fluid". Designed for use in hydraulic drives of brake systems and clutches of domestic and imported cars. Compatible with all domestic and imported glycol-based fluids. It has a boiling point of more than 2300C. The price of a 900 gram bottle is 160 rubles.
2. TJ from . The modified composition of the Bosch version is sold at a price of 400 rubles per liter. Endowed with improved characteristics against the formation of steam bubbles at high temperatures and increased intervals between replacements (up to 2-3 years).

As you can see, the price for this technical fluid is acceptable, so you should not save and look for the cheapest option. A low-quality vehicle can fail at the wrong moment. Also, when purchasing, check the product for counterfeit. It is recommended to purchase “brake guards” at trusted points of sale.

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.

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.

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.

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.

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.

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.

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.