How to get rid of the screeching brakes of the car. Why brake make noise

The sound of screeching brakes – the phenomenon is quite unpleasant, and sometimes dangerous. In most cases, the cause of the noise of the brakes is pretty easy to fix yourself.

2015-11-19 09:14:34 72

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Where does the squeal and hiss of brakes

Any brake system inevitably makes a noise of a certain frequency range. Usually it is a moderate buzzing and creaking. But it also happens that the sounds the brakes are very different from the results of the normal operation of the braking system. Screeching, whistling, squeaking brakes is a high – frequency vibration due to rubbing surfaces of details of the braking system during the braking process. That can vibrate? In drum brakes, the vibrations can occur directly between the brake pads and the drum of the wheel and between the pads and the platter. In disc brakes the cause unpleasant squeal is a vibration between the brake pads and the disc between the brake pads and the caliper and between caliper and details of its mounting.

Remove sand and dust

Very often sand and other small particles accidentally fell on the working surface of the disc, drum, brake pads or linings that may emit at the moment of braking is so pronounced squeal and whistle that an inexperienced driver is not alone. Meanwhile, to get rid of such trouble, it is enough to remove the wheel and clean the working surfaces of the brakes from falling on them of sand and other debris, at the same time making sure there is no leakage of brake fluid from the hydraulic system of the vehicle.

Wear indicator

It may be that the brake pads are worn so that when the braking system drum or disc is not a pressed plate brake pads and its metal part. As a result of friction of metal on metal brakes will squeak and whine. In this case the brake pads should be urgently replaced. The braking system in this state is able to refuse the wrong time, endangering your life and the lives of your passengers and other road users.

Noisy pads

Quite often after replacing the brake pads with new ones, marked with their increased "noise". In this case, the main reason for the squeal and the hiss of the brakes is the material that brake linings. If after a few days of operation do not align the pads to the brake disc, it is necessary to pay attention to the material from which they are made. Most semi-metallic pads are noisy. Because of their relatively high hardness and stiffness at work, in contact with metal surfaces of the disks or drums, they can make quite loud sounds. More preferred (and more expensive) are the pads with ceramic pads. They are stable to high temperatures, exhibit less wear and emit significantly less noise than semi-metallic. It happens that bought at the car the brake pads, positioned, branded, is actually made be someone unknown and who knows what material. Most often, due to violation of manufacturing technology, metal content in the friction part of the pad exceeds the norm. Therefore, if the brakes after installing these pads become noisy, the best thing to do is to replace counterfeit parts to other, well-known manufacturer.

Weather conditions

In the autumn-winter brake mechanisms of the wheels, regularly and almost silently worked in the summer, you can start to whine and popiskivaet. If you are sure of serviceability of brake system, to panic in this case is not necessary– the brake noise is likely caused by differences in temperature and moisture.

Other reasons

Common cause of brake noise may be brake pads that are not securely anchored to the landing field in the caliper. In such cases it is necessary to check the fasteners and make sure that all of its elements: brackets, springs, studs and gaskets are in place. If all fasteners are present pads, and the pads are set correctly, reduce the noise level of the brake mechanism by installing on the back of the pads self-adhesive isolation pads that will absorb generated between the pads and brake caliper vibration. Alternatively, you can put on the rear of the pads extinguishing compound, which after hardening will be a rubbery material damping. Instead of compound, you can use a dry molybdenum lubricant.In conclusion, the topic – one important note: because brake pads are a steam item, after replacing them the brake mechanism of one wheel must do the work to replace them and in the mechanism of another wheel. Let the brakes of your car are always in good condition, quiet you drive!

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