What should I do if the brake fails？ Five ways to deal with it.

　　What should I do if the brakes fail while driving? Now let’s see what we can do to deal with the brake failure when driving.

　　What should we do when the brakes fail? First of all, we should find out what is the cause of the brake failure, and then think about how to solve it.

　　Causes of brake failure

　　First, there is a lack of necessary maintenance of the brake system. There are too many impurities in the brake master cylinder, the seal is not tight, the vacuum booster pump fails, the brake oil is too dirty, or after several brake oils are mixed and heated, there is air resistance, oil leakage in the brake master cylinder or sub-cylinder, and air leakage in the air storage tank or pipeline interface;

　　Second, due to improper operation, the parts fail, such as friction and heat generation of brake pads, carbonization of brake hub and complete failure of braking function when going downhill for a long time;

　　Third, due to serious overload, under the action of gravity acceleration, the inertia of vehicle movement is increased, which directly leads to brake failure.

　　What should the novice do if the brakes of the vehicle fail while driving?

　　1. Control the direction according to the road conditions and vehicle speed, disengage the high gear, and at the same time quickly blow a foot of empty oil, and change the high gear into the low gear. In this way, the engine will have great traction resistance to reduce the speed quickly. In addition, the handbrake should be used in combination with the low gear, but it should be noted that the handbrake should not be tightened or pulled too slowly. If it is pulled too tightly, it is easy to make the brake disc "locked", which is likely to damage the transmission parts and lose the braking ability; If it is pulled too slowly, the brake disc will be worn and ablated and lose its braking function.

　　2. Make use of the friction and collision between the rigid parts such as the bumper and carriage of the car and the natural obstacles (rocks, trees or soil slopes) on the roadside to achieve the purpose of forcibly stopping to escape from danger and reduce the accident losses as much as possible.

　　3. If the brake fails when going uphill, it should be reduced to the middle and low gear in time to keep enough power to drive uphill and stop. If you need to stop halfway up the slope, you should keep the forward low gear, tighten the hand brake, and the attendant will block the wheels with stones, skids and other things in time. If there is backsliding, the rear of the car should face the hillside or the safety side, and turn on the headlights and emergency lights to attract the attention of the front and rear vehicles.

　　4. When the downhill brake fails and the vehicle’s own mechanism cannot be used to control the speed, the driver should decisively use natural obstacles, such as rocks and trees on the roadside, to cause resistance to the car. If you can’t find suitable terrain and objects to use at the moment, in an emergency, you can move one side of the car body closer to the hillside, increase the resistance by friction, and gradually reduce the speed.

　　5. When the vehicle is going down a long slope or steep slope, you should step on the brakes whether there is any situation or not. It can not only test the braking performance, but also win the time to control the speed when the brake fails, which is also called predictive braking.

　　Reprinted from: Zhongyue Driving School Yitongtong