How to bleed brakes with abs (ABS): step by step instructions. How to bleed the brake system with ABS? Can you bleed abs brakes yourself?

Bleeding brakes with ABS is not as difficult as it seems, however, it requires certain knowledge and skills from the driver, and in some cases, due to the specific design solutions of the ABS systems themselves, without contacting service centers car maintenance is out of the question.

Of course, pumping brakes with abs has its own distinctive features compared to pumping a conventional brake system. This should be understood, therefore, before taking any action to bleed the brakes with abs, you must at least briefly familiarize yourself with the car's ABS system itself.

How to bleed abs brakes- order of work.

On this moment There are two main types of ABS, which differ from each other in the order in which the system nodes are placed.
The first type of ABS is when the pump itself, the hydraulic accumulator and the hydraulic valve block are located in the main assembly.
In this case, bleeding the brakes with abs is carried out in the standard mode, as well as on conventional brakes without abs.

To do this, we find the fuse that is responsible for the work car ABS, take it out. This is what we achieve complete shutdown systems.

Unscrew the RTC bleed screw.

We turn on the ignition of the car, while you should observe glowing light bulb ABS malfunctions. At the same time, the pump starts, which expels air from the circuit. brake system. If the light goes out, then you did everything right.

The second type of ABS is when all the components (hydraulic module with valves, hydraulic accumulator) of this system are located in different nodes.

IN this case You will need a special scanner for diagnosing the ABS system, which removes all the necessary information from electronic block control of this system.

Such a scanner is expensive and rare for ordinary drivers. Therefore, pumping brakes with abs of this type, as a rule, is performed at a service station.

Also on most ABS installed special devices activations, the so-called ESP or SBC. Such ABS are pumped in the same way, only at the service station.

So, let's move on to the specifics and consider the algorithm for pumping brakes with abs.

The first thing to do before bleeding the ABS brakes is to reduce the internal pressure in the system, which can reach 180 atm.

Naturally, such pressure is unacceptable during work, therefore, in order to reduce it, we press the brake pedal 15 - 20 times, while the car's ignition must be turned off.

The following describes the most common method for bleeding brakes with abs. Naturally, for each car model, this process may be different, so before doing any work, study the operation manual for your car yourself.

Work is carried out with an assistant.

The ignition must be off. On a barrel brake fluid disconnects the connectors, unscrew the lid of the barrel.

First, we pump the brakes of the front wheels.

As with bleeding a conventional brake system, we take a hose, preferably transparent, put it on the bleeder fitting, and open the fitting one turn.

We press the brake pedal, watch how airy fluid comes out. We twist the fitting back, release the pedal.

You can repeat several times until the release of the air mixture stops.

We do the same on the second front wheel.

We pump the brakes of the rear wheels.

We start with the right rear wheel.

We also put the hose on the fitting and unscrew the fitting itself one turn.

Press the brake pedal and hold it in that position.

We start the engine, while the running pump will begin to expel the air mixture. This process must be watched carefully. As soon as liquid begins to come out without air, the fitting immediately closes and the brake pedal is released.

We turn off the ignition.

We pump the brake of the rear left wheel.

We do the same.

We put the hose on the fitting and open the fitting one turn.

BUT, this time we do not press the brake pedal.

We start the engine and observe how the airy liquid comes out.

Before screwing in the fitting, depress the brake pedal by 50% and only then screw in the fitting completely.

Then we release the brake pedal completely, turn off the ignition and wait for the pump to stop working completely.

Naturally, in the process of pumping brakes with abs, we constantly add fresh brake fluid to the reservoir to maintain its level.

Do not forget to reconnect the connector to the brake fluid reservoir and tighten the cap, and also once again check the car's brake system for leaks.

If someone has other methods of pumping brakes with abs, please share them in the comments.

Bleeding the brakes has never been something very difficult and problematic for motorists, this work took an average of 1.5-2 hours. However, with the advent of vehicles with a system ABS task has become much more complicated, and most drivers will not be able to answer the question of how to pump the brakes with ABS.

The process of pumping the brake system with ABS cannot be called laborious or too complicated, the whole problem is that you need to know the sequence of this work and then everything will work out. Today I will tell you how to properly bleed the brakes with the ABS system at home without anyone's help.

How to bleed ABS brakes - step by step instructions

There are two types ABS systems, which are pumped differently. Their differences lie in the location of the nodes and the principle of action.

First ABS type includes: pump, hydraulic valve block and hydraulic accumulator. Such an ABS scheme is considered the simplest, and therefore it is pumped almost like an ordinary brake system.

In order to bleed the ABS brake system, follow these steps:

1. Produce visual inspection main unit of the system.
2. Locate the fuse that is responsible for the operation of the entire ABS system and remove it from the socket. Thus, you turn off the system completely.
3. Locate the fitting and the bleed RTC. Unscrew it and start pumping.
4. Bleeding the brakes with ABS is done with the pedal depressed, to check the operation, turn on the ignition, the ABS malfunction indicator will light up on the instrument panel.
5. Turn on the pump and wait until the air is completely out of the system.
6. When the light goes out, this will mean that the system has been pumped correctly.

Brakes with ABS of the second type, in which the main components (pump, accumulator and hydraulic valve) are located in different places flows differently.

In order to bleed the brakes with this type of ABS, you need to have a special scanner that reads the computer data coming from the ABS unit. Given the cost of this device, it is unlikely that it will be cheaper to do this work at home; perhaps it would be more profitable to go to the service station.

In addition, such systems often have additional modules (ESP, SBC), which one way or another will need to be tested, and this can only be done in the service.

Brakes with this type of ABS are bled as follows:

Note: This instruction on how to bleed ABS brakes contains general rules and recommendations, for each car model, this procedure may vary slightly.

First of all, you need to find a partner and relieve the pressure in the system, which often reaches 180 or more atmospheres. It is not recommended to work with the system with such pressure. In order to relieve pressure, you need to turn off the ignition and apply the brakes about 10-20 times. Disconnect the connectors on the tank with TJ (brake fluid).

First, we pump the brakes of the front wheels:

1. Switch off the ignition.
2. Put the hose on the bleeder fitting.
3. Open the fitting half a turn.
4. Fully depress the brake pedal and lock in that position. In this case, you will see how to exit the TJ with bubbles.
5. When the bubbles run out, tighten the fitting and release the pedal.

1. Put the hose on the bleeder fitting, unscrew it a full turn.
2. Depress the brake pedal to the floor.
3. Turn on the ignition, do not release the brake pedal.
4. The pump will expel all the air from the brake system, as soon as you see that there are no “bubbles” and the fluid goes without air, close the fitting and release the pedal.

Now it's the turn to pump the brakes of the rear left wheel:

1. Put the hose back on the fitting and unscrew it a full turn.
2. This time we do not press the brake pedal.
3. The switched on pump pumps out the “airy” TJ.
4. Next, press the pedal halfway and tighten the fitting.
5. Depress the brake pedal and wait for the pump to stop completely.
6. Turn off the ignition, connect the connectors to the TJ tank.

Upon completion, check for leaks, check the tightness of the brake system. Add brake fluid to reservoir until required level. At this pumping of brakes with ABS can be considered complete. Assemble the tool, wash your hands and test the brakes while driving. Be careful not to accelerate too fast, first check the brakes at a low speed.

It has never been something very difficult and problematic for motorists, the completion of this work took an average of 1.5-2 hours. However, with the advent of cars with the system, the task has become much more complicated, and most drivers will not be able to answer the question of how to pump the brakes with ABS.

The process of pumping the brake system with ABS cannot be called laborious or too complicated, the whole problem is that you need to know the sequence of this work and then everything will work out. Today I will tell you how to bleed abs brakes at home without any help.

How to bleed ABS brakes - step by step instructions

There are two types of ABS systems that bleed differently. Their differences lie in the location of the nodes and the principle of action.

The first type of ABS includes: a pump, a hydraulic valve block and a hydraulic accumulator. Such an ABS scheme is considered the simplest, and therefore it is pumped almost like an ordinary brake system.

In order to bleed the ABS brake system, follow these steps:

1. Make a visual inspection of the main unit of the system.
2. Locate the fuse that is responsible for the operation of the entire ABS system and remove it from the socket. Thus, you turn off the system completely.
3. Locate the fitting and the bleed RTC. Unscrew it and start pumping.
4. Bleeding the brakes with ABS is done with the pedal depressed, to check the operation, turn on the ignition, the ABS malfunction indicator will light up on the instrument panel.
5. Turn on the pump and wait until the air is completely out of the system.
6. When the light goes out, this will mean that the system has been pumped correctly.

Brakes with ABS of the second type, in which the main components (pump, accumulator and hydraulic valve) are located in different places, are pumped differently.

In order to bleed the brakes with this type of ABS, you need to have a special scanner that reads the computer data coming from the ABS unit. Given the cost of this device, it is unlikely that it will be cheaper to do this work at home; perhaps it would be more profitable to go to the service station. In addition, such systems often have additional modules (ESP, SBC), which one way or another will need to be tested, and this can only be done in the service.

Brakes with this type of ABS are bled as follows:

Note: This instruction on how to bleed ABS brakes contains general rules and recommendations; for each car model, this procedure may vary slightly.

First of all, you need to find a partner and relieve the pressure in the system, which often reaches 180 or more atmospheres. It is not recommended to work with the system with such pressure. In order to relieve pressure, you need to turn off the ignition and apply the brakes about 10-20 times. Disconnect the connectors on the tank with TJ (brake fluid).

First, we pump the brakes of the front wheels:

1. Switch off the ignition.
2. Put the hose on the bleeder fitting.
3. Open the fitting half a turn.
4. Fully depress the brake pedal and lock in that position. In this case, you will see how to exit the TJ with bubbles.
5. When the bubbles run out, tighten the fitting and release the pedal.

1. Put the hose on the bleeder fitting, unscrew it a full turn.
2. Press the brake pedal to the floor.
3. Turn on the ignition, do not release the brake pedal.
4. The pump will expel all the air from the brake system, as soon as you see that there are no "bubbles" and the liquid goes without air, close the fitting and release the pedal.

Now it's the turn to pump the brakes of the rear left wheel:

1. Put the hose back on the fitting and unscrew it a full turn.
2. This time we do not press the brake pedal.
3. The switched on pump pumps out the “airy” TJ.
4. Next, press the pedal halfway and tighten the fitting.
5. Depress the brake pedal and wait for the pump to stop completely.
6. Turn off the ignition, connect the connectors to the TJ tank.

Upon completion, check for leaks, check the tightness of the brake system. Add brake fluid to the reservoir to the correct level. At this pumping of brakes with ABS can be considered complete. Assemble the tool, wash your hands and test the brakes while driving. Be careful not to accelerate too fast, first check the brakes at a low speed.

It is no more difficult than bleeding a traditional car brake system. But in order to properly remove air from the brake system on which it is installed ABS system, it is recommended to understand the principle and scheme of its operation specifically for your car. Since depending on the model, the pumping scheme may differ slightly. For example, when the hydraulic valve block and the hydraulic accumulator with the pump are in the same unit, both the replacement of the fluid and the pumping of the brake system with ABS will be carried out in a similar way, as well as.

Types of ABS systems

1. ABS includes: hydraulic valve block, hydraulic accumulator, pump (pumped in garage conditions);
2. The pump, hydraulic accumulator and hydraulic valve block are located at different nodes, such a brake system, in addition to ABS module includes additional ESP modules, SBC (in service station conditions). It is necessary to have a diagnostic scanner to monitor the modulator valves.

Based on the features, we can conclude that before you pump the brakes with ABS, decide on the type of your system, since this instruction will relevant only for standard anti-lock braking system.

Bleeding the ABS brakes

In order to qualitatively complete the task, it is desirable to pump with an assistant, starting to pump the brake system from the front wheels, then the rear wheels (right and left).

The pressure in the brake system with ABS can fluctuate up to 180 atm, which is why the first thing to do is to reset it.

The pressure is released by discharging the pressure accumulator. To do this, turn off the ignition and press the brake pedal about 20 times. And then, to proceed to the next stage of bleeding the brake, disconnect the connectors on the brake fluid reservoir.

The general principle of how to bleed the brakes with ABS

1. We find and remove the fuse in the block responsible for the operation of the ABS;
2. We unscrew the wheel and find the RTC fitting for bleeding the brake;
3. We begin to pump the brakes with abs with the pedal depressed;
4. Turn on hydraulic pump(with ignition on, dashboard) and wait until all the air comes out;
5. Tighten the fitting and release the brake pedal, if abs light bulb no longer burns - everything is done correctly and the air is completely out.

The sequence of removing air from the vehicle

Let's start pumping the brakes from front right and then left. Procedure happens when the ignition is off.(position to "0") and removed terminal on the TJ tank.

1. We put the hose, with a bottle, on the fitting and open it (with an open-end wrench). Just need to give transparent hose so that air bubbles can be seen, as well as the other end of the hose must be completely immersed in liquid.
2. Fully depress the pedal and hold until all the air comes out.
3. Tighten the fitting and release the pedal as soon as the liquid comes out without air.

Rear wheels pumped with ignition on in key position "2".

1. As with bleeding the front wheels, we put a hose on the bleeder fitting on the caliper.
2. After fully depressing the pedal, turn the ignition key (to start the hydraulic pump). We observe the air outlet and control the level of brake fluid in the reservoir (top up periodically).
   

   In order for the pump not to be out of order, it is necessary to monitor the level of TJ all the time (to prevent running “dry”). And also do not allow to work continuously for more than 2 minutes.

   3. We close the fitting after the complete release of air bubbles, and the pump is turned off and the brake is released.

To properly bleed the brakes with abs on the rear left wheel, the sequence of actions needs to be slightly changed.

1. As in previous cases, we first put the hose on the fitting and unscrew it not completely, but only 1 turn, and the pedal no need to squeeze.
2. Turn the ignition key to start the hydraulic pump.
3. Once the air is out depress the brake pedal to half and tighten the bleed screw.
4. Then we release the brake and wait for the pump to stop.
5. Turn off the ignition and connect the removed connector from the tank.

If you need to bleed the brakes together with the ABS modulator, then information on such a procedure can be viewed.

IN without fail after the brakes have been bled, before leaving, you need to check the tightness of the system and the absence of smudges. Check the brake fluid level.

Good day, dear motorists! Among us, most likely, there is no driver who at least once did not experience a feeling of helplessness at the moment of braking. When the car continues its movement, and not at all in the direction in which the driver wants. Skid.

Fortunately, engineering thought does not stand still. Modern Driver armed with a system such as ABS. Let's take a closer look at the system and see if it is possible to bleed the brakes with ABS with your own hands.

What is car ABS

ABS (Anti-lock Braking System) is an anti-lock braking system that prevents the wheels from locking during emergency braking.

The main task of the ABS is to regulate the speed of rotation of all wheels. This is done by changing the pressure in the vehicle's brake system. The process occurs with the help of signals (impulses) from each wheel sensor, which enter the ABS control unit.

The principle of operation of the anti-lock braking system
The contact patch of the wheels of the car is in relative immobility to the roadway. According to physics, the wheels are affected by the so-called. static friction force.

Taking into account the fact that the static friction force is greater than the sliding friction force, with the help of ABS, the rotation of the wheels is effectively slowed down at a speed that corresponds to the speed of the car at the time of braking.

At the moment of the beginning of braking, the anti-lock braking system begins to constantly and accurately determine the speed of rotation of each wheel, and synchronizes it.

Anti-lock system device
Here are the main components of ABS:

• sensors installed on the wheel hubs of the car: speed, acceleration or deceleration;
• control valves installed in the line of the main brake system. They are also components of the pressure modulator;
• the electronic unit ABS control. Its task is to receive a signal from sensors and control the operation of valves.

Bleeding brakes with ABS, taking into account the features of the system

Bleeding the ABS brake system will require you to have certain technical skills. In addition, it will not be superfluous to study the manual for the installation and maintenance of the brake system of your car.

Features of pumping brakes with ABS

• in vehicles that have in one unit: a hydraulic valve block, a hydraulic accumulator and a pump, changing the brake fluid and bleeding the brake system with anti-lock braking system produced in the same way, you need to turn off the system by removing the fuse. Bleeding of the circuits is carried out with the brake pedal depressed, the RTC bleeder must be unscrewed. The ignition is turned on and the pump expels air from the circuit. The bleeder screw is tightened and the brake pedal is released. An extinguished malfunction lamp is evidence of the correctness of your actions.
• Bleeding of the brake system with ABS, in which the hydraulic module with valves and the hydraulic accumulator are separated into separate units, is carried out using a diagnostic scanner to read information from the ABS computer. You probably don't have it. Therefore, bleeding brakes with ABS of this type, most likely, should be done by you at the service station.
• Bleeding the brake system with ABS and electronic systems activation (ESP or SBC) is made only in terms of service.

How to bleed ABS brakes

It is important! It should be remembered that the pressure in the brake system reaches 180 atm. Therefore, in order to prevent the release of brake fluid, before disconnecting brake lines for any system with ABS, it is necessary to discharge the pressure accumulator. To do this, with the ignition off, press the brake pedal 20 times.

Technology of pumping the brake system with ABS

Bleeding brakes with ABS, like bleeding a conventional brake system, is performed with an assistant. Turn off the ignition (position "0"). Disconnect the connectors on the brake fluid reservoir.

Front wheel brakes:

• put the hose on the bleeder fitting;
• open the fitting for a turn;
• the brake pedal is pressed to the stop and held in the depressed position;
• we observe the exit of the "airy" mixture;
• turn the screw on and release the pedal.

Rear right wheel brake:

• put the hose on the bleeder fitting, unscrew it one turn;
• press the brake pedal to the stop, turn the ignition key to position "2". In this case, the brake pedal is held in the depressed position;
• a running pump will force air out of the system. That is, as soon as the brake fluid begins to come out without air bubbles, close the fitting and release the brake.

Rear left wheel brake

• the hose is put on the fitting and unscrew it 1 turn;
• DO NOT press the brake pedal;
• a working pump pushes out the “airy” mixture;
• press the brake pedal halfway and tighten the fitting;
• release the pedal and wait for the pump to stop completely.

IN reverse order: turn the ignition key to "0", connect the connectors to the brake fluid reservoir, carry out a leak test of the brake system (see ABS fault indicator).

Good luck with bleeding your ABS brakes.