Check method of automobile brake pad
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The author:haohuien
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Release time :2017 days ago
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Thickness: the thickness of a new brake pad is generally about 1.5cm, which will gradually become thinner with constant friction in use. When the thickness of the brake pad is only 1/3 (about 0.5cm).
1. Thickness: the thickness of a new brake pad is generally about 1.5cm, which will gradually become thinner with constant friction in use. When the thickness of the brake pad is only 1/3 (about 0.5cm). The owner will increase the frequency of self-inspection, ready to replace at any time. Due to wheel hub design, some models do not have the conditions for visual inspection, so they need to remove the tires to complete.
If it is the latter, by the time the warning light comes on, the metal base of the brake pad and the brake disc are in the state of iron grinding iron, at this time, the tire will be near the rim of the wheel to see the bright iron chipping. Instead of relying on warning lights, we recommend that brake pads be regularly checked for wear and tear to see if they work.
2, listen to the voice: if at the same time with the light brake "iron rub iron" filar voice or clamour (also may be the brake pad at the beginning of installation run-in effect), the brake pad must be immediately replaced.
3, with foot sense: if the pedal feel very tired, often need to step on the brake deeper in order to achieve the previous braking effect, or take emergency braking will obviously feel the pedal position is low, it is likely that the brake pad has basically lost friction, this time must be replaced.
Common problems
Q: how often do you change the brakes? A: generally speaking, the replacement cycle of the front brake pad is 30,000km and the replacement cycle of the rear brake pad is 60,000km, which may vary slightly from model to model.
How to prevent excessive wear and tear?
1. In the process of continuing down the steep slope, reduce the speed in advance, use the appropriate gear and adopt the operation mode of engine braking with the braking system, which can effectively reduce the burden of the braking system and avoid overheating of the braking system.
2 prohibit the downhill process to extinguish the engine, the car is basically equipped with the brake vacuum booster pump, once the engine turned off, the brake booster pump not only can not play an auxiliary role, but also to the brake total pump generated great resistance, braking distance will be multiplied.
3, automatic car in the urban driving, regardless of speed to timely collect oil. If you apply the brakes only when you are very close to the car in front of you, the brake pads will be very worn and fuel intensive. How do you prevent excessive brake wear? Therefore, automatic car to see the red light or congestion ahead of the fuel to advance, not only save fuel, save maintenance costs, but also to increase the ride comfort.
4. When driving at night, when driving from the light to the dark, the eyes need to adapt to the change of light. In order to ensure safety, the speed should be reduced. How do you prevent excessive brake wear? In addition, when going through the curve, slope, bridge, narrow road and not easy to see the place, should reduce the speed and ready to brake or stop at any time, prevent unexpected accidents, to ensure the safety of driving.
Matters needing attention
Brake drum is installed brake shoes, but the general people called brake pad refers to the brake pad and brake shoes, so use "disc brake pad" to specifically point out is disc brake brake pad. It's not the brakes.
Methods the choose and buy
First, the friction coefficient determines the basic braking torque of the brake pad. If it is too high, the wheel will lock, lose control of direction and burn the brake pad. If it is too low, the braking distance will be too long. Second, to look at safety, the brake pad will produce instantaneous high temperature during braking, especially in high-speed driving or emergency braking, the friction coefficient of the friction disc will decrease under the high temperature condition; 3. Comfort, including braking sensation, noise, dust, smoke and peculiar smell, is a direct reflection of friction performance; Four life, usually the brake pad can guarantee the service life of 30,000 kilometers.
First of all, should choose the normal manufacturer production, there is a license number, designated friction coefficient, the implementation of standards, such as the car brake pad, and packaging box should be qualified, production batch number, production date, etc. Next, choose professional maintenance point to ask professional personnel to install.