What are the common causes of brake drum cracking?

Common causes of brake drum cracking

1. The brakes are hot. Into the pool

Many high-speed downhill sections have a cooling pool halfway up the hill to lower the temperature of the brake drum. If the temperature of the brake drum is too high, it is easy to lead to cracks directly into the pool, and even crack in serious cases.

Suggestion: If the brake drum is too hot, stop and let it cool naturally.

2. Found the temperature is high before boiling water

Brake water dousing is an important device to ensure the safety of trucks in China. It is mainly used to reduce the temperature of brake drum and reduce the thermal decay of brake. And if the brake drum is too hot when the water is opened, only the brake drum will crack.

Suggestion: before downhill, try to choose long open water, it does not cost much money, but can improve driving safety.

Brake water drenching device, in China has been a very contradictory thing, in the north you install, he said you change, run to the south you do not install, he said you violate the rules, which is embarrassing and suffering, only the truck people know that kind of taste. It is recommended to choose vehicles with auxiliary braking to operate correctly and reduce unnecessary driving braking when going downhill.

3. Change it to "King Brake."

Brakes do not work well for a number of reasons. In order to improve the braking effect, some drivers will choose a product called "Brake King". The so-called "good braking" of the brake king is nothing more than increasing the amount of overair on the brake gas road. The consequence is that the brake drum can not withstand so much force, leading to rupture.

Suggestion: Bad braking is generally a system problem. Check the gas path, valve body and mechanical part of the system, and do not use the brake king.

4. Too much reliance on trailer braking

Some semitrailer tractors in China in order to prevent the phenomenon of "pushing the head" on the wet road surface, the main vehicle braking is weakened, too dependent on the trailer braking, leading to the trailer brake drum load is too large, leading to high failure rate.

Suggestion: pay attention to check the whole vehicle braking, maintain the overall coordination of the main vehicle and the trailer braking, and do not rely too much on the trailer braking.

5. Usually don't pay attention to check

Some careless drivers usually do not pay attention to their brake drum situation is what, in the usual maintenance of the car, should pay more attention to observe the thickness of the brake drum, whether there are too serious cracks.

Suggestion: the truck should be "maintained instead of repair", usually pay attention to check, do not wait until the broken repair.