Why does the steering wheel vibrate when braking on the VAZ-2110, Chevrolet Lacetti, Opel Astra? When braking at a speed wheel vibrates

Car - vehicle increaseddanger. When driving all controls must be intact. However, it happens that the steering wheel vibrates when braking. "Opel Astra" is also not immune from such a problem. Let's look at the causes of this fault and how to eliminate them.

Wheel balancing

If you have when braking at speed vibratesthe steering wheel, the first thing to sin on, is the drive wheels. They may be unscrewed or unbalanced. Check the presence of weights on the disk - if one of them falls off, the problem can be solved by a single visit to the tire. You will not perform this operation yourself. Yes, and it is inexpensive, so first pay attention to balancing. It happens that the weights remained in place, but the disk bent when driving into a hole. In this case, repair will help. In the case of stamped products, they can be leveled without welding.

On cast wheels so do not work.By the way, you need to balance all four wheels. For the price it will be 1-1,5 thousand rubles. If it is a passenger car, no more than 50 grams of weight weights can be hung on each wheel. It will be useful to know when buying new wheels with tires. If they have a lot of weights, this is a reason to doubt the flatness of the disk and the uniform wear of the tire.

Tires

Sometimes the heartbeat arises due to uneventread wear. This is possible with incorrect wheel alignment. In some cases, motorists deliberately "fill up" the rear wheels, if they do not fit the diameter of the arch. In this case, putting them on the front will not work, except with the same negative degree of collapse.

Pads

Далее осматриваем тормозную систему, а именно pads. Since the steering wheel controls the front wheels, look at the state of the pads on them. Why does the steering wheel vibrate when braking in this case? Pads wear out a lot. The friction material is erased to the lining, and then the metal part rubs against the disk. As a result, when braking, the steering wheel vibrates.

VAZ-2110 is equipped with a reliable braking systembut it may also require repair if the consumables are not timely replaced. The pads need to be changed once for 20-25 thousand kilometers. If you have an aggressive driving style, divide this figure by 2. After installing new shoes, run in - brake for 200 kilometers smoothly and without jerks. This is necessary in order to get used to the new material to the working surface. Remember that the front pads wear several times more often than the rear.

Determine the wear can be by notches:when the pads are worn before them, need a replacement. Well, if the friction material is worn down to the metal lining, urgently buy the pads, as during the next braking the caliper can simply jam, and the car will go to the skid. Also about the replacement says characteristic creak when braking. Sometimes this happens because of a bad friction material or when water gets on its surface. After washing the car, thoroughly dry the brakes by briefly pressing the pedal.

Drives

It means not wheel, but brake discs.They also have their own resource and are considered consumable. Depending on driving style, they serve from 150 to 200 thousand kilometers. Over time, the disk thickness decreases. When the working part completely wears out, the shoe starts to beat against the base.

Of course, after that, when braking vibratessteering wheel (on “Chevrolet Lacetti” as well). Also not excluded deformation of the disk. When braking, the friction force increases - the metal begins to heat up. And if at this moment the car drove through a puddle, the disc may crack due to temperature changes. It sounds frightening, as if it is about to break into small pieces. Even a small crack makes itself felt. If your steering wheel vibrates during braking, pay attention to the condition of not only the pads, but also the disc itself. Sometimes, instead of cracks, it simply “leads”. The working surface becomes uneven. At first glance, you will not see the deformations. But for the pads, the slightest tubercle is enough to provoke a vibration. If you buy new discs, choose only originals. New brake pads are also included. If you were sold only a disc, this is a reason to doubt the integrity of the seller and the manufacturer. Also on the fakes, the thickness of the working surface and weight is much less.

How to check the disc?

To do this, poddomkratit car androtate wheel posted. The machine should not stand on the transmission - only the handbrake, otherwise you will not move the disc from its place. If, while rotating, it emits characteristic sounds, disassemble the wheel and inspect the condition of the brake elements.

Также рекомендуется проверить подшипник ступицы.To do this, rotate the wheel back and forth. If there is a large play, it should be tightened. But remember that the bearing needs a small free play. With a strong tightening, you risk damaging the part. If the wheel rotates tightly, the caliper's piston may have soured. Check its condition and replace if necessary.

Disk repair

In some cases, this element canrestore. It is amenable to repair in the absence of cracks. The whole recovery procedure is boring the working surface of the disk. It is leveled to a perfectly smooth state.

But in the case of cracks, and if the thickness of the diskminimal, it changes entirely. The cost of a new element is from two to ten thousand rubles. You can replace it yourself. But it will be possible to squander only a professional turner.

Dirt inside

Sometimes sand and dust that got to workthe surface of the brake elements, can provoke vibration. Especially often it happens in rainy weather, when dirt sticks to the disk along with water. Over time, it dries out and forms a solid layer. It can serve as an unbalanced weight, which is why the steering wheel vibrates when braking. Sometimes dirt gets on the inside of a disc or on a wheel shelf. The solution to the problem is high-quality flushing of elements of the brake system under high pressure of water.

Tie rods

При наличии вибраций осмотрите рулевые тяги.When worn and the development of tips these elements begin to vibrate when braking. How to check them? For this you need an assistant. He should hold the steering wheel tightly. At this time, you pull the tie rods from side to side (on a jacked-up car). There should be no backlash.

If there is a free wheeling this thrust is necessaryreplace. Also a sign of a malfunction of the element - poor handling of the car. The steering wheel becomes "sluggish." After replacing the steering gear, be sure to normalize toe-in to avoid uneven rubber wear.

Rail

In the presence of backlash steering check the status of the rail.It can flow through the boot. To fix this, buy a repair kit. If everything is dry, the backlash can be fixed with an adjusting bolt. But it is not necessary to tighten it too much. If the backlash is very large, it is better to replace the rail with a new one. After this, also balance the wheel alignment.

Spherical bearing

To diagnose it, post the front wheel andgrasp the top and bottom of the tire. If there is a backlash, there may be a failure of the ball. There are no adjusting bolts here, like on a rail or a hub bearing. The solution is to replace the item with a new one.

Cardan transmission

На многих автомобилях в рулевой колонке there is a small cardan. He, too, must be examined. You can reach it by removing the column protective cover. The item is located in the place where it enters the body. If kardanchik staggers, there is a development on it. After replacing this element, the steering wheel no longer vibrates when braking. This does not happen often, but you should not rule out such a malfunction.

Other elements

In rare cases, the steering wheel vibrates when brakingdue to rotted suspension struts. This happens on cars over 20 years old. Also on these machines wear suspension bushings. As a result, there is a backlash and vibration. Work items should not have traces of corrosion and drips.

Conclusion

Итак, мы выяснили основные причины, по которым the steering wheel vibrates when braking. As you can see, in most cases the problem is uncritical and is solved in one light day. But this does not mean that it should be postponed until later. Remember that a good steering is a guarantee of safety for the driver and his passengers.