Xiao Wu is a food deliveryman who loves cycling. He braves the wind and rain every day, shuttling through the streets and alleys of the city on his electric bike to deliver meals. This electric bike has accompanied him to complete countless orders and is a powerful assistant for him to earn money.

One afternoon, Xiao Wu received and delivered orders as usual. On a downhill section, in order to avoid a small dog that suddenly dashed out, he quickly squeezed the brake. But in an instant, he felt that something was wrong with the brake. It didn’t have the usual crispness, the braking force was soft, and the bike didn’t slow down as expected. Xiao Wu’s heart skipped a beat, and cold sweat broke out on his forehead. He desperately squeezed the brake several times while controlling the direction. Fortunately, relying on his rich cycling experience, he managed to stabilize the bike just before it rushed into the roadside flower bed.

This thrilling experience made Xiao Wu realize that there must be a serious problem with his electric bike. He didn’t dare to ride rashly anymore and carefully pushed the bike to a nearby electric bike repair shop with a good reputation. The repairman warmly received him. First, he carefully examined the electric bike all around, and then he got on the bike and tried the brake himself. The repairman found that the feel of the brake was abnormal, and he could clearly feel the weakness of the brake.

Immediately after, the repairman began to carefully check the braking system. He first looked at the brake lever and the brake caliper and found no obvious damage or looseness. Then, the repairman focused his attention on the brake hose. He found a slight bulge on the surface of the brake hose, which was very likely the key cause of the brake failure. To further confirm this, the repairman used professional tools to conduct a pressure test on the brake hose. As a result, it was found that the pressure inside the hose was significantly insufficient, and there was a leakage situation.

The repairman explained the situation to Xiao Wu in detail, explaining that the brake hose is like the blood vessel of a human body, responsible for transmitting the pressure generated by the brake fluid. Once there is damage or leakage, the braking effect will be greatly reduced. The repairman also took out several brake hoses of different brands and models from the shop and introduced that different brake hoses vary in material, pressure resistance performance, and price. For example, some are made of high-strength rubber material with a metal braided mesh wrapped around the outer layer, which has strong pressure resistance and is not easy to break, but the price is relatively high; while some ordinary brake hoses are more affordable, but their durability is slightly inferior.

Considering that he rides a long distance every day, the road conditions are complex, and he has extremely high requirements for the safety of the brake, Xiao Wu chose a brake hose with excellent quality and a moderate price. After determining the brake hose, the repairman started to replace it. First, he drained the brake fluid of the electric bike to avoid brake fluid leakage during the replacement process. Then, he carefully used professional tools to unscrew the joint screws at both ends of the brake hose and removed the old brake hose from the bike. When installing the new brake hose, the repairman paid special attention to arranging the hose along the fixed cable groove of the bike frame to avoid bending or twisting, which would affect the normal flow of the brake fluid. Then, the repairman accurately installed both ends of the new brake hose at the interfaces of the brake caliper and the brake lever and tightened them with screws to ensure a tight connection and no leakage.

After the installation was completed, the repairman began to pour new brake fluid into the braking system and carried out the air bleeding operation. He squeezed the brake lever repeatedly to expel the air inside the brake hose, so that the brake fluid could fill the entire braking system and ensure the sensitivity of the brake. After a series of debugging and inspections, the repairman finally completed the repair work of the braking system.

With a nervous and expectant mood, Xiao Wu got on the electric bike and came to the downhill section where the brake had failed before again. He took a deep breath and slowly squeezed the brake. This time, the brake responded quickly, and the bike decelerated steadily and powerfully. The familiar sense of security returned. The worry in Xiao Wu’s heart finally dissipated, and he was extremely grateful for the repairman’s superb skills.

This experience made Xiao Wu deeply realize the importance of the brake hose for the safety of the electric bike. He also reminded other electric bike owners to pay more attention to the condition of the braking system usually, regularly check whether the brake hose has problems such as aging, bulging, and leakage. Once any abnormality is found, it must be repaired or replaced in a timely manner to ensure riding safety. From then on, Xiao Wu would carefully check the key components such as the brake before each trip, making his food delivery journey safer and smoother.