How to judge whether the Air Pressure Brake Hose needs to be replaced?

In the braking system of the car, the Air Pressure Brake Hose plays a vital role. It is not only responsible for transmitting the pressure from the air brake system, but also directly affects the braking performance and driving safety of the vehicle. Therefore, it is crucial to regularly check and replace aging or damaged air brake hoses in time.
1. Appearance inspection
First, conduct an intuitive appearance inspection. Observe whether there are obvious cracks, wear, bulges or deformations on the surface of the air brake hose. These signs usually indicate that the hose is aged or physically damaged and needs to be replaced. In addition, pay attention to whether there is leakage at the hose joint. Even a small amount of leakage may affect the braking effect.
2. Touch inspection
Gently touch the surface of the hose to feel its elasticity and flexibility. Under normal circumstances, the air brake hose should have a certain elasticity and toughness, and can withstand pressure changes well without being easily deformed. If the hose feels hardened, loses elasticity or becomes too soft, it may be a sign of aging and needs to be replaced.
3. Check the inside of the hose
Although it is difficult to check the inside of the hose directly, it can be indirectly judged by observing whether there are impurities, oil stains or water stains at the outlet of the hose. If abnormal substances are found, it may be that the inside of the hose has been damaged or corroded, resulting in a decrease in sealing. In this case, it is recommended to replace the pneumatic brake hose with a new one.
4. Consider the service life
The service life of the pneumatic brake hose is affected by many factors, including the use environment, frequency of use and maintenance status. Generally speaking, most manufacturers will recommend that car owners replace the hose after a certain number of years of use (such as 3-5 years) to ensure its stable and reliable performance. Therefore, even if there is no obvious abnormality in the appearance of the hose, it should be replaced regularly according to the service life.
5. Performance test
For car owners or maintenance technicians who have the conditions, performance tests can be used to more accurately determine whether the pneumatic brake hose needs to be replaced. For example, use professional testing equipment to perform pressure tests on the hose to observe whether its performance is stable and reliable under different pressures. If the hose is found to leak, swell or rupture during the test, it must be replaced immediately.