All articles about the device and repair of units and elements of the brake system of cars VAZ-2108 and VAZ-2109 Sputnik.
The device and operation of the brake system According to its purpose and functions, the brake system of the car is divided into working, spare, parking and emergency. The working brake system reduces the speed of the car...
Vacuum brake booster device The vacuum booster reduces the amount of effort required for braking on the brake pedal, thereby facilitating driving. It is fastened with two studs to the adapter bracket, which...
Brake master cylinder The main cylinder of the hydraulic drive of the brakes, complete with reservoir 13 (pic. 79) fastened on the studs of the vacuum booster with nuts. Two pistons are located in...
Brake pressure regulator Pressure regulator 1 (pic. 81) changes the pressure in the drive of the brake mechanisms of the rear wheels depending on the load on the rear suspension of the car. With an...
Front wheel brake mechanism The brake mechanism of the front wheel is disc, with a movable caliper. It fits well into the wheel, has a small number of parts, including seals and a small mass. Since the heat...
Rear wheel brake mechanism The brake mechanism of the rear wheel is drum, with automatic adjustment of the gap between the pads and the drum. It is mounted on the support board 11 (pic. 85), attached to the...
Parking brake system The brakes of the rear wheels have not only hydraulic, but also a mechanical manual drive, which includes: lever 10 ( see fig. 85 ), two cables 10 (pic. 87), equalizer 6, rod 5...
Brake maintenance After the first 2,000 km and then every 15,000 km, check: tightness of the system, condition of hoses and tubes; liquid level in the tank (top up if necessary); efficiency of the...
Checking pipelines and connections To prevent sudden failure of the brake system, check the condition of all pipelines: metal pipelines should not have nicks, scratches, rubbing, active centers of corrosion and...
Parking brake adjustment If the parking brake does not hold the vehicle on a 25% slope when the lever is moved 4-5 teeth of the ratchet, adjust it in the following order: raise the parking brake lever by...
Brake pedal free travel adjustment The free travel of the brake pedal with the engine off should be 3...5 mm. The adjustment is carried out by moving the switch 10 (pic. 89) brake light with loose nuts 8 and. 9....
Checking the performance of the pressure regulator Place the car on a lift or inspection ditch, clean the pressure regulator and its drive parts from dirt. Visual inspection to make sure that the pressure regulator and its drive...
Checking the performance of the vacuum booster Press the brake pedal 5-6 times with the engine off to create in cavities A and B ( see fig. 78 ) the same pressure, close to atmospheric pressure. At the same time, by the force...
Removal of air from a hydraulic drive of brakes Bleeding the hydraulic brakes is necessary to remove air, which significantly reduces the effectiveness of the working brake system. Air can get into the hydraulic drive due to...
Brake Fluid Replacement In order to prevent air from entering the hydraulic drive system and to spend the minimum amount of time on this operation, the following rules must be followed: proceed in the...