The braking system is directly related to driving safety. Today, let's talk about the common yet dangerous issue of spongy brakes.
Brake fluid, as a crucial medium for transmitting braking pressure, has a decisive impact on braking performance in terms of its quality and condition. If not replaced for an extended period, brake fluid can absorb moisture, deteriorate, and have its boiling point reduced. Under high temperatures, bubbles are likely to form. These bubbles weaken the braking force, making the brakes feel spongy, as if stepping on cotton.
The wear and tear of brake pads and brake discs also cannot be overlooked. As the vehicle is used, brake pads gradually wear down and become thinner, and the surface of the brake disc becomes smooth due to frequent friction. This reduces the friction coefficient between them, directly affecting the braking effect. Once it is detected that the brake pads are worn close to or reaching the replacement limit specified by the manufacturer, they must be replaced immediately. Otherwise, there is a high risk of brake failure. Regarding the brake disc, if its surface becomes noticeably smooth or has grooves, repair or replacement should be considered to ensure sufficient friction for the brakes to function properly.
Air in the braking system is also a significant cause of spongy brakes. If the brake pipes are not well - sealed or maintained inadequately, air can enter the system, creating an air blockage that impedes the normal flow of brake fluid. This results in slow - reacting and weak brakes.
To avoid the problem of spongy brakes, first, it's essential to replace the brake fluid on schedule and select high - quality products that meet the requirements of the vehicle manufacturer. This ensures the stable operation of the braking system. Each time the brake fluid is replaced, professional equipment should be used to thoroughly bleed the braking system to eliminate any remaining air, restoring the normal fluidity of the brake fluid and the braking response speed.
Moreover, the working condition of the brake booster system is of utmost importance. For vehicles with hydraulic or vacuum boosters, if the booster system malfunctions, such as a failed vacuum pump or a leaking booster pump, it will lead to insufficient brake assistance. Drivers will feel that the brake pedal becomes extremely heavy, and the braking effect will be severely compromised. Therefore, regular maintenance of the braking system is highly necessary.
For vehicles equipped with a brake booster system, we should pay special attention to the working condition of the booster system. Regularly visit a professional repair station for inspection and maintenance to ensure that components like the vacuum pump and booster pump are operating correctly, and that the fluid in the booster system is sufficient and free from leakage. This guarantees sufficient brake assistance and enhances driving safety.
Through these maintenance and inspection measures, we can effectively prevent the problem of spongy brakes and ensure safety and stability during driving. Well, that's all for this issue's automotive knowledge popularization. See you next time!