It is hard to imagine how a car with a brake failure or […]
It is hard to imagine how a car with a brake failure or a complete loss of braking will bring a happy life to the owner! There is no doubt that the braking of the vehicle is a guarantee for the safe driving of the vehicle, but how many owners have a deep understanding of the braking system and can have a good habit of regularly checking the braking system?
In fact, many car owners think that the brake is after pressing Brake drum the brake pedal, the car can finally stop and everything is OK. Next, we hope that every car owner can pay enough attention to the inspection of the brake system, because the brake is a guarantee for the car and love yourself.
Check the brake system steps:
1. Check the amount of brake fluid.
The brake fluid should be stored between the upper and lower engraved lines of the reservoir. If brake fluid is missing, add the same type of brake fluid of the same brand type. Do not add other types of brake fluid or alcohol substitutes.
2. Check the “feel” of the brake pedal of the hydraulic brake system.
When you step on the brake pedal, you should first feel the small free travel of the pedal (according to the requirements of each model), and the free stroke should be between 6-20mm. Continue to step on the pedal and the pedal should have significant resistance until it stops. If the pedal is soft, there is no obvious resistance, indicating that the brake system is faulty and should be repaired; if the pedal is depressed, the first pedal is very low, and the second foot returns to normal, but the pedal is pressed hard. A slight amount of elasticity indicates air in the brake line and the air in the brake hydraulic line should be removed. When the brake pedal is depressed, the brake pedal should be kept at a certain distance from the cab floor, which should meet the requirements of the model. If the distance is too small, the wheel brake shoe clearance is too large, and the shoe brake clearance should be adjusted.
3. Check the brake system leakage.
Check the technical status of the brake system to eliminate looseness, oil leakage or air leakage at each connection.
4. Inspection under parking conditions.
After starting the engine, after a few minutes of engine operation, for the hydraulic (including vacuum assist type) brake system, if the brake pedal is properly reacted, the piping system is normal.
5. Inspection under driving conditions.
Start the engine, release the hand brake, and drive the car at 20-30km/h. When the brake pedal is pressed on the dry and straight road, the car should decelerate and stop quickly without deviation. After the car is braked, when the brake pedal is released and continues to drive, it should be able to start and drive smoothly, and when the steering wheel is not moving, the car should keep running straight without deviation. When the car is driving for a certain distance (not braking), stop the temperature of the brake drum (brake disc brake) and the temperature should not be normal.