Maintenance and Brake System Monitoring

Undoubtedly, the operation of an auto with faulty brakes or having deviations in the operating parameters of the brakes is IMPOSSIBLE, since most accidents occur because of their ineffective operation. Therefore, it is not only necessary, but vital, to constantly monitor and timely repair the brake system using original spare parts for Audi.

Checking the brake system

The effectiveness of the brake system can change at any time, so it is recommended to check its performance more often, but at least once a season. The control of the braking system must be carried out not only on the direct dry section of the asphalt at a speed of 50-60 km / h, where professional "pilot" skills and knowledge of the brake system, as well as specialized stands of professional service stations are required.

Testing the effectiveness of the brake system on the SRT is carried out in several stages - separately each wheel. After all, when the braking factor of at least one wheel decreases, the braking efficiency falls dramatically with the car moving to the side (with dangerous drifts). That is why the verification of each axis should establish a sufficient normalized braking force without significant differences between them.

Most SRTs are equipped with drum-type stands simulating the movement of the machine at a speed of about 5 km / h, with each wheel receiving a separate movement through the rolls of the stand. At the command of the SRT employee, the driver presses the brake pedal in the emergency braking mode (ie, until the failure), at this moment the stand captures the braking force generated on the rotating rollers.

The total average efficiency of the braking force should be of the order of 16%, while the operation of the ABS system is not taken into account; It does not work because of the low speed of the "movement". But it should be taken into account that the measured data can be erroneous if such factors are not taken into account:

• The studded or high-protector tires having a small coefficient of friction (clutch) are installed.
• The tire pressure is different from normal or uneven in all wheels.
• Recently installed original spare parts for Audi (brake pads), which require running-in or during the transportation of the car, they have been wetted with liquids, which requires before the measurement of cleaning and drying.
• Measurements of the braking force are carried out only on "cold" tires, so the car must stand before the procedure.

Signs of malfunction of the brake system

Insufficient supervision and monitoring of the braking system when untimely replacement of original spare parts for audi can lead to unforeseen catastrophic consequences, so it is worth paying attention to the main manifestations of brake system problems:

• The braking distance of an unloaded car on a dry, flat section of an asphalt road at a speed of 60 km / h should be about 14 m, while there should not be any withdrawal of the car to the side or an uneven "grasping of the brakes". In this case, it is necessary to take into account the features of the type of machine and the tires installed on it, Deviations from the manufacturer's recommendations can significantly affect the efficiency of the braking distance.
• Detection of increased free-wheeling of the pedal, which indicates the occurrence of air blockages in the brake system or the limiting production, which requires an urgent replacement of the original spare parts for audi. The "grasping" of the brakes for a few strokes with a pedal indicates the bypass of the system valves or the unsuitable state of the brake fluid. A constant "soft" pedal makes it clear about the depressurization of the system, which can be confirmed by leaving the storage tank fluid. With such manifestations of brake failure, further independent movement is not permissible and towing is required on a rigid hitch or on a tow truck.
• Preservation of the stiffness of the pedal with a decrease in the efficiency of braking makes it possible to know about the limiting production of brake pads, the failure of the vacuum amplifier or the wedging of the working hydraulic pistons. Continuation of traffic in this situation is not recommended, and is allowed only at a reduced speed in cases where it is impossible to transport the car on a rigid hitch.
• The periodic appearance of a "soft" pedal in cases of prolonged and intensive braking indicates a decrease in the quality of the brake fluid. Heating from the brake discs causes it to boil. Urgent replacement of hydraulic fluid is required, and it is recommended to install new original spare parts for Audi.
• Inefficient holding of the machine on the road gradient by the parking brake can be manifested with the brake pads developed or the drive (cable) being improperly adjusted, as well as when it is jammed due to the increased formation of metal oxides.

It is also worth paying attention to such manifestations:

• Periodic dips of the brake pedal or car driving to the side with sudden movement changes.
• Strong heating of wheel disks, due to the wedging of the brakes.
• Knocking of the brakes or the manifestation of vibration, indicating that the brake pads are not working properly, are shifting or jamming. This requires an urgent bulkhead brake system, tk. At a sudden braking, the wheels can be completely locked.
• Piskas and squeaks of brakes indicate the use of poor-quality materials for brake pads or their insufficient grinding (if they are new).
• The wedging of brake pads can occur due to accumulation of dirt or the formation of intense corrosion of metal in the braking unit.