VAZ-2110, braking system: circuit

In this article, we will consider the design of the VAZ-2110: the braking system, the main components and mechanisms. You will learn about the general scheme of the drive, the design of all elements.

General device

The braking system VAZ-2110 is arranged in such a way that the pads are driven by pressure in the tubes. There are two circuits, a special pressure regulator, a vacuum amplifier and a liquid level sensor in the tank. In the event that one circuit fails, the other remains operational. Of course, the efficiency of braking will drop drastically. It is also worth noting that ventilated brake discs are installed on the front wheels of the "dozen" .

Also the design provides presence of the alarm indicator of deterioration колодок. On the rear wheels are installed drum brakes, which are driven by a two-piston cylinder. There is also a mechanism that automatically adjusts the gap between the drum and the brake pads. The basis of the system is the master cylinder mounted on a vacuum amplifier. In the upper part of the GTZ there is an expansion tank, which has a cover with an integrated level sensor.

Master Brake Cylinder

The braking system VAZ-2110 consists of several units, but the main thing is the cylinder, which increases the pressure in the tubes. In the cylinders, the pistons move in series. The one that is closer to the vacuum amplifier creates pressure in the right front and rear left brake mechanisms. The second piston drives the calipers of the left front and right rear brakes. Pay attention to the fact that the cuffs that are worn on the pistons are the same. They have a diameter of 20.64 mm. But there is a sealing ring operating under low pressure. It is on the piston that is closer to the vacuum amplifier. In addition, it has a groove.

Vacuum amplifier

The brake circuit of the VAZ-2110 provides for the presence of a vacuum amplifier. With its help, the effort is exerted, which is applied to the pedal. The vacuum amplifier is located between the pedal and the cylinder. Fastening is made with two pins. The design does not imply the disassembly, so when the device is damaged, the device must be replaced immediately with a new one.

To check the vacuum amplifier, it is necessary to muffle the engine and press the brake pedal several times. Then squeeze the pedal to the end, start the engine and pay attention to what will happen. If the pedal has gone forward, the vacuum amplifier is fully functional. Of course, in the event that there are no visible minor defects. It is also worth noting that the device will not function or its efficiency will decrease at times if the hose that connects it to the exhaust manifold is broken. If there is such a defect on the VAZ-2110, the braking system will work poorly.

Pressure regulator

A pressure regulator is provided for the rear brakes. It is fixed by means of a bracket to the body of the car from the left rear side. And one of the bolts produces fastening of the fork of the regulator drive. The holes are oval in shape. Due to this, the bracket can be moved near the regulator. At the same time, the force acting on the piston of the mechanism changes.

With increasing load on the rear of the car, a certain amount of force is exerted on the lever. In this case, it is transferred to the piston. When you press the brake pedal, the fluid in the system tries to push the piston out. But this is hampered by the effort that comes from the lever. Then there is a balancing of the braking system. The braking force is not applied to the rear axle. As a consequence, the rear wheels can not be locked. The brake system diagram of the VAZ-2110 demonstrates how the liquid flows through the tubes.

When there is an increase in the load on the rear axle, the wheels and the road have the maximum degree of traction. With the help of the regulator, more pressure is applied to the cylinders of the rear wheels. When the load on the rear wheels decreases, the pressure becomes lower. On the body there is a small hole, which is closed with a cap. If you detect leakage of liquid from there, there is leakage in the sealing rings.

How to replace the master cylinder

To ensure access to the cylinder, remove the upholstery in the engine compartment. For this, three screws on VAZ-2110 are twisted. The brake system, the malfunctions of which are discussed in the article, is hidden under this upholstery. It is worth noting that there is no need to completely remove it. It is enough to bend a little. After the cylinder has been accessed, the liquid level sensor must be disconnected. Then it is necessary to unscrew the lid from the expansion tank. Pump out all the liquid with a pear or syringe. After this, unscrew the pipe fittings from the cylinder. Take them away.

Now you can unscrew two nuts, through which the GTZ is fastened to the body of the vacuum amplifier. Remove the cylinder with the expansion tank. To dismantle the latter, just screw it with a screwdriver. The main brake cylinder is installed in the reverse order. It is necessary to pump the system. However, almost any repair of the VAZ-2110 braking system ends with a pumping.

How to remove the vacuum amplifier

As in the previous section, remove the upholstery. Also, you need to dismantle the covers installed on the windshield. To ensure that air does not fall into the hydraulic system, it is not necessary to disconnect the pipes from the GTZ. Then unscrew the two nuts that secures the cylinder to the brake booster casing. Take the GTZ to the front of the car - try not to break the brake pipes.

After this, it is necessary to disconnect the hose coming from the intake manifold. Further you move to the interior, disconnect the wires, and then unscrew the four nuts with which the bracket of the brake pedal is fastened. Now you can remove the brake booster together with the pedal.

How to replace the front pads

The braking system of the VAZ-2110 is quite reliable, but the pads still wear out with time. To replace them you will need to hang out the front wheels. Remove the wheel, then bend the edge of the plate, by which the lower bolt securing the caliper to the hub is fixed. Next, unscrew the bolt, using a screwdriver, lift the caliper assembly up. Now you can easily pull pads. Note that installing new ones will be problematic, since the piston is in the extended state. It must be pressed with the help of a gas key until it stops.

If there is no suitable key, it is necessary to install the outer block. After that, the support should be lowered to the initial position and install the mounting blade between the disc and the piston. With its help, the latter is pressed into the caliper. Assembly of the assembly must be done in the reverse order.

Replacement of back blocks

To determine the condition of the rear pads, do not need to disassemble the entire mechanism. A special inspection window is provided for this. From it, you need to pull out the plug, after which you can determine the thickness of the lining. Note that a minimum thickness of one and a half millimeters is allowed. On the VAZ-2110 the braking system is made according to the standard scheme, the same is used on most cars.

First, you need to hang out and remove the rear wheel. Secondly, loosen the parking brake cable, unscrew the pins and, turning the brake drum, apply a small hammer with light blows to the end. After that, you can remove the drum. Using a screwdriver, it is necessary to disconnect the upper spring, then the guide and the lower one. After this, the tip of the parking brake cable must be disengaged. Then, the cotter pin is removed from the axis of the parking brake lever. Then you can install new shoes in the reverse order.

Conclusion

It is not difficult to repair it if you know how the VAZ-2110 brake system works. For all events, you will need a standard set of tools and only one special key for 8 crimp type. In stores, it is called the "key for brake pipes." With its help, the fittings are easily unscrewed.