There are many causes of brake failure. One is the lack of necessary maintenance on the brake system, too many impurities in the brake master cylinder, loose seals, failure of the vacuum assist pump, dirty brake fluid, or mixed use of several brake fluids. , Brake master cylinder or sub-pump leak, gas tank or pipeline interface leakage; Second, due to improper operation leads to mechanical failure, such as long-term downhill friction brake pads will heat, carbonization of the brake hub, brake function is complete Failure; The third is due to severe overload, under the influence of the acceleration of gravity, increasing the inertia of the vehicle movement, directly leading to brake failure.
If a vehicle fails to brake when it is moving, what should a novice do?
1. According to the road conditions and speed control a good direction, take off the high gear, and quickly hung a leg of empty oil, the high speed gear into low gear. In this way, the engine will have a lot of traction resistance so that the speed of the vehicle quickly decreases. In addition, the handbrake should be used in combination with the low gear, but it should be noted that the handbrake can't be pulled tight or pulled too slowly. If you pull too tight, it is easy to make the brake disc "locked", it is likely to damage the transmission parts and lose the braking ability; if you pull too slowly, it will make the brake disc wear ablation and lose the braking effect.
2. Use the car's bumper, carriage and other steel parts to rub against and collide with roadside natural obstacles (rocks, trees, or slopes) to achieve the purpose of forcibly parking out and reduce accident losses as much as possible.
3. When the brake malfunctions when climbing uphill, it should be reduced to the middle and low gears in due course and keep enough power to drive uphill to stop. If you need to stop on a half-slope, you should keep the low gear in the forward direction and tighten the hand brake. The occupant will promptly block the wheels with stones, padding and other objects. If there is a phenomenon of backsliding, the rear of the vehicle should face the hillside or the side of safety, and turn on the headlights and emergency signal lights to attract the attention of the front and rear vehicles.
4. When the downhill brake malfunctions and the vehicle's own mechanism cannot be used to control the vehicle speed, the driver should decisively use natural obstacles, such as roadside rocks and trees, to cause resistance to the car. If you can't find a suitable terrain and objects can be used for a while, you can bring one side of the car body closer to the mountain side in an emergency, increase resistance with friction, and gradually reduce the speed.
5. When the vehicle is on a long slope or a steep slope, the brake should be stepped on regardless of the condition. Both can test the braking performance, but also can be found in the brake failure to gain control of the time, also known as predictive braking.
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