The brakes were too hard and then there was a split second when the brakes failed

1. Analysis of possible causes.

1. It is the lack of necessary maintenance of the brake system, there are too many impurities in the brake master cylinder, the sealing is not tight, the vacuum booster pump fails, the brake oil is too dirty or the air resistance occurs after the mixing of several brake oils after heating, the brake master cylinder or sub-cylinder leaks, and the air leakage of the gas tank or pipeline interface;

2. It is due to improper operation that causes the failure of the parts;

3. Due to serious overload, under the action of gravitational acceleration, the inertia of vehicle movement is increased, which directly leads to brake failure.

Second, the treatment method.

1. Control the direction according to the road conditions and speed, disengage the high-speed gear, and at the same time quickly blast the empty fuel and shift the high-speed gear into the low-speed gear. In this way, the engine will have a lot of traction resistance and the speed of the vehicle will be reduced rapidly. In addition, the handbrake should be used in conjunction with the low-speed gear shift, 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 "lock", and it is likely to damage the transmission parts and lose the braking ability; If it is pulled too slowly, the brake disc will wear and ablate and lose its braking effect.

2. Use the bumper, carriage and other rigid parts of the car to rub and collide with natural obstacles (rocks, trees or soil slopes) on the side of the road to achieve the purpose of forcibly stopping and getting out of danger, and reduce the accident loss as much as possible.

3. If the brake fails when going uphill, it should be reduced to medium and low gear in time to maintain sufficient power to drive uphill to the top of the slope and stop. If you need to park on a half-slope, you should keep the forward low gear, tighten the hand brake, and the personnel with the vehicle should use stones, skids and other objects to jam the wheels in time. If there is a backward slippage, the rear of the car should face the hillside or the safety side, and the headlights and emergency lights should be turned on to attract the attention of the vehicles in front and behind.

4. When the downhill brake fails and the speed of the vehicle cannot be controlled by the mechanism of the vehicle itself, the driver should decisively use natural obstacles, such as rocks and trees on the side of the road, to cause resistance to the car. If you can't find a suitable terrain or object to use for a while, in an emergency, you can move one side of the car closer to the side of the mountain, and gradually reduce the speed of the vehicle by rubbing to increase the resistance.

5. The vehicle should step on the brakes when going down a long slope or a steep slope, regardless of whether there is a situation or not. It can not only test the performance of the brakes, but also buy time to control the speed of the vehicle when the brakes are found to be out of order, also known as predictive braking.

3. Preventive measures.

Do not ignore the daily maintenance of the brake system, in order to prevent the occurrence of brake failure, please maintain the brake system in time, regular maintenance and overhaul is essential, for the safety of life, you must not ignore the regular maintenance.

Note: Check whether the brake shoes are in good condition, and do not overuse the brakes, hang the low gear when going downhill, use the brake of the engine to let the car drive, supplemented by the foot brake; Avoid severe overloading to prevent brake failure.

Check the return of the brake pad and brake cylinder.

There are many reasons for the problem:1. There is a problem with the vehicle's brake master cylinder.

2.Brake collapse with insufficient oil or too many impurities. 3.

Oil leakage from the brake master cylinder or brake cylinder. 4.The brake pump is not tightly sealed.

In this case, it should be checked and repaired as soon as possible to avoid potential safety hazards.

Do brakes suddenly fail and need to be replaced?

This situation depends on the specific inspection situation. If the brake pad needs to be replaced after inspection, it is necessary to go to the after-sales service or repair shop to replace it in time. If no problem is found after inspection, it may just be a foreign object stuck or a fault caused by a minor malfunction, which can be used again after repair.

Does the sudden failure of the brakes have an impact on the future use of the car?

Yes, the braking system of the vehicle is very critical. Once there is a problem with the vehicle's braking system, it will affect the driving safety of the vehicle. So when the vehicle suddenly has a brake failure, it must be checked and repaired in time to solve the problem.

Millions of car purchase subsidies.

Some car owners reported that they were driving their vehicles at the three-way intersection and found that the brakes suddenly failed, and it was useless to step on them to the end. Fortunately, the owner reacted and hit the steering wheel urgently to avoid colliding with other cars. But after a while, it was back to normal.

Why do brakes suddenly fail? There may be several reasons for this: First, the lack of necessary maintenance of the brake system, too many impurities in the brake master cylinder, poor sealing, failure of the vacuum booster pump, excessive dirtiness of the brake oil, oil leakage of the brake master cylinder or sub-cylinder, air leakage of the gas tank or pipeline interface, etc.; The second is the failure of the parts due to improper operation, such as long-term downhill will cause the brake pads to rub and heat, the brake hub to carbonize, and the brake function to completely fail; Third, due to serious overload, under the action of gravitational acceleration, the inertia of vehicle movement is increased, which directly leads to brake failure.

What should I do if the brakes suddenly fail? 1. Calm and calm is the premise When encountering brake failure, the first thing to do is to calm down, do not operate casually, grasp the steering wheel, release the accelerator pedal, and turn on the hazard warning lights (double flashing lights); 2. Try to step on the brake several times Once there is an accident on the brake, you must know how to repeatedly press the brake several times, which will put pressure on the braking system with air in the oil pipe, and it is possible to recover part of the braking force; 3. Engine brake + handbrake When the brake fails, the manual transmission model can be continuously downshifted in turn, so that the traction of the engine intervenes in braking, and when the gear is lowered to 1st gear, it will slow down with the handbrake. It is a foot brake type, and to control the strength of the foot brake, remember not to step on the foot brake to death.

When using the handbrake, you must press and hold the "release" button in front of you, do not let go, and pull the handbrake several times in a row. Don't pull it to death at once! Otherwise, it is easy to lock the rear wheels and the vehicle will slide or overturn.

Also note that when you pull the handbrake, hold the steering wheel in front of you and don't hit the wheel, otherwise it will drift. 4. Brake the refuge lane The high-speed section is generally provided with a refuge lane, which is a buffer area for the vehicle that fails to brake, and the refuge lane is generally set up in the long downhill section or the frequent braking deceleration section, and the slope and gravel are used to make the runaway vehicle stop safely, and the end is provided with a flexible barrier to minimize the damage. 5. Use roadside obstacles In the end, there is no way, you can only use the bumper of the car, the carriage and other rigid parts and the natural obstacles (rocks, trees or soil slopes) on the side of the road to friction and collision, to achieve the purpose of forcibly stopping and getting out of danger, as much as possible to reduce the loss of accidents, this method can be used for uphill and downhill brake failure.

The above is the content of "the brake suddenly fails and is fine", I hope it can help you.

If the brake fails, immediately hang the low gear and pull the handbrake. Look for trees or walls. When the brakes fail when going downhill and the vehicle is unable to slow down and brake by other means, the driver should immediately look for a natural obstacle.

1. Hang the low-speed gear and pull the handbrake.

Control the direction of travel of the vehicle according to the road conditions and speed, quickly press the clutch pedal, and shift from high to low gear. In this way, the engine creates a lot of traction drag to reduce the speed of the vehicle. In addition, when hanging to a low gear, the handbrake should be pulled at the same time, but it should be noted that the tightness and speed of the handbrake should be moderate, not too tight or too loose, and not too slow.

If the handbrake slows down slowly or fails, you should try to force downshifting, which is often referred to as gear rushing, to see if you can turn the gear from high to low, thus slowing down the car.

2. Look for trees or walls.

When the speed of the vehicle cannot be controlled, it should be controlled to drive in the direction of trees or walls, and use the bumper, compartment and other solid parts of the vehicle to collide or rub against obstacles to achieve the purpose of forced stopping, and avoid hitting pedestrians or other vehicles as much as possible.

3. When the brakes fail when going downhill and the vehicle cannot slow down and brake by other methods, the driver should immediately look for natural obstacles.

If you can't find a suitable obstacle, you need to sound a loud horn to remind the vehicle in front of you to give way to you, lean the side of the body against the hill, and reduce the speed of the car through frictional resistance to force the car to stop.