It is not always possible for all systems to function smoothly, as is the wear indicator
After 3-5 years of use or 50,000-120,000 km without any unusual signs, you should also check the brake mechanism because it is most likely that the cheeks are worn out and scratching the brake disc.
Brakes are inefficient
When braking the floor, the braking effect is not as good as usual. The brake fluid is reduced due to leakage or mixing of water so the braking force does not produce sufficient oil pressure, check and repair the pipe before adding new oil or changing oil.
There are cases where the warning system with worn brakes does not work, without any sound coming from the wheel. Therefore inefficient braking is another sign that the brake pads are worn out.
Brake gently, without any braking effect
The brake pedal is very light, even if the brake has hit the floor but still does not show the effect, the two most common causes are broken oil and gas or the main cylinder. In the presence of air bubbles, when braking the air bubbles are compressed easily, the pressure is not large enough for the brake mechanism to work properly. Please discharge the air (discharge e) to push out the gas. In case the main cylinder is broken, worse, it cannot be repaired and needs to be replaced.
Brake heavy saw
Today’s brake systems often use vacuum power to reduce the difficulty of the driver having to brake. With the phenomenon of brake pedaling, the cause of the brake is often broken. The gas leak did not create a pressure difference large enough to support the force from the pedal. The driver can still brake the car with a stronger force.
Another reason, oil pipelines are blocked, oil pressure is high but cannot be transmitted to the brake mechanism. In this case, braking is also ineffective or much less effective. To release the biggest brake force, adjust the seat so that the back, hip rests on the seat.
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Operation of the brake is unstable
When braking, they must react smoothly and stably. There are times when the brake pedal is held for a long time, the braking force only appears for 1 second and then the cycle is repeated regularly, maybe the brake pads or brake discs are broken. In case you need to replace the brake disc, it is recommended to replace each pair before or after, avoiding only one side.
The sound came from the brake mechanism
Manufacturers often use drum brakes or disc brakes. Disc brakes are often used on modern cars that can be only in front wheels or all four wheels, older models use drum brakes because their speeds are lower than new ones, moreover at that time the disc brakes still incomplete.
The creaking noise came out only when you hit the brake, which simply signaled that the brake pads were worn, should be replaced. This is a safety measure given by the manufacturer.