Why brake the brake when braking?

In absolutely any car, regardless of brand and year of production, the key element responsible for safety is the brakes. If the brake pedal beats during braking, this is not a good sign. When such effects appear, it may be necessary to fully diagnose the vehicle. Let's look at the typical reasons for this phenomenon.

Direct causes

When when the brake pedal is pressed, beats are felt, then an urgent and complete diagnosis is necessary. To do this, you should turn to a high-quality car service, where qualified specialists work. However, to identify the reasons why the pedal beats when braking, you can and yourself. This method is suitable for experienced motorists.

How does the effect manifest?

Often the beats appear at high speeds. So, there is a regularity - higher speed - more vibration. Often they are felt not only on the brake pedal, but also on the body of the car, as well as on the steering wheel. It is very difficult not to notice this beating. If the vibrations are felt more on the body than on the elements of the system, then the brakes in this case are not the cause. But carefully check them all the same recommended.

Brake discs

Among the most common and popular reasons can be identified broken and damaged discs. They, in turn, can fail due to various damages or deformations. Disks break due to critical temperature changes. When braking, the element instantly warms up, and then it also drastically cools. It is because of these temperature fluctuations that various curvatures occur. If the brake pedal beats during braking, then carefully check the elements for breakage, cracks, deformations. If you detect even the slightest defects, the damaged part should be replaced immediately. To check where exactly the defective disk is installed, use a hand lever. If in this case there is no vibration, then the culprit is in front.

Also, sometimes vibrations may appear due to corrosion, but wear on the work surface may be normal. In this case, it is recommended to run the discs. This should be done by an experienced turner. However, there are technologies of grooving directly on the machine, without removing the discs. This procedure is much cheaper. Also, you need to make sure that the disks are properly mounted. With a poor installation on the parking surface, the braking will be accompanied by a beating effect.

New disks and general system malfunctions

But even after installing the best quality discs, problems can still be felt. Often, the brake pedal brakes when braking on the first hundred kilometers of the car. The reason is a sharp decrease or deterioration in the performance characteristics of the entire system as a whole.

To solve this trouble, run-in discs are used. However, even if this did not bring its effect, thorough diagnosis is recommended. Special equipment will help to accurately determine the causes of heartbeats.

Pads

Among the malfunctions of the brake system in the car can be and pads. This problem is easy to cure. It is enough simple replacement and beating will stop. Often, the brake pedal brakes when braking because of the so-called "sticking" of the rear pads. If you press the pedal too hard and too fast when driving at high speed, inexpensive items can be painted. In this mode, they wear out quickly. The output is simple - replacement.

Rear Drum

This fourth reason, because of which the pedal can not work in normal mode. This often happens on the "GAZel". There, the rear brake drum is deformed , and therefore the brake pedal is depressed when braking. "GAZelle" rear is equipped with a drum brake. If it is in a neglected state, it is natural that there are vibrations.

Brake Cylinders

This is the last of the most common reasons for the appearance of beats and vibrations on the pedal. Often cases, when both the front and rear cylinders of the brake system are sour. This contributes to various malfunctions.

To overcome this problem, you can do without a replacement - the problem is solved with the help of WD-40. It is enough to sprinkle this miracle-tool, and it is possible that the brakes will start working as it is necessary and conceived by engineers.

Indirect malfunctions

If after checking the typical and popular faults the brake pedal still brakes during braking, then the problems should be sought in other most unexpected places. To other malfunctions, which can cause the effect of vibrations or beats, it is possible to include the stupile bearings, which are very worn out during operation. The situation can be corrected by their replacement. In addition, due to maintenance wear levers on the front wheels.

Also, vibrations can appear as a result of unbalanced wheels. In this case, the pedal beats hard, but the main thuds are given all the same to the body. Solving this issue is not difficult - in the simplest case balancing will help. In the worst case, the wheels will have to be replaced.

If you checked everything, but could not find out why the pedal beats when braking, you should check the tightness of nuts, bolts and other fasteners. Not fully tightened fasteners can be the culprit for the appearance of backlash. At high speeds, this can cause significant heartbeat, and in such cases the brake is checked.

When braking, the brake pedal and the steering wheel

Sometimes vibration on the brake pedal is added to the vibration on the steering wheel. There are many reasons for this effect. This is imbalance, worn brake pads, steering rods, cardan gear.

Even if it seems that the wheels are perfectly balanced, this is not yet a guarantee that everything is really good. To find out whether this is so, a special stand is needed . Balancing is recommended for all wheels at once.

A common problem with domestic cars and foreign cars is the wear of the front shoes. Because of this, the wheel rushes. To carry out the diagnosis, the machine is installed on a pit and inspects the discs and pads. If there is a serious deterioration, then only a replacement, if the wear is small, then you need to look for the real reason. Often when braking, the brake pedal beats (VAZ-2110 is no exception), and also the steering wheel. Experienced car owners recommend checking the rear pads and the entire system if the vibrations are felt on the pedal, and if on the steering wheel - then look at the brakes in front.

Steering links

The steering wheel beats because of wear on the tips on the steering rods. It is necessary to look for a possible shat in these mechanisms. If there is no freewheel during the jerking, then the traction is all right. If the link is loose, it should be replaced, but this operation implies a subsequent procedure of collapse-convergence.

Cardan transmission

It would seem, and here it is, but experienced auto mechanics argue that the causes of vibration on the pedals and steering wheel can hide in this very transmission. When worn crossings can be felt and vibration, and heartbeat. Check the condition of the frogs and replace the worn out assembly if necessary. Such problems are often observed on "GAZel".

Ball bearings

Experienced motorists recommend to carefully check the entire chassis. The reason can be hidden anywhere. So, not infrequent cases when the brake pedal brakes during braking (VAZ-2114 is no exception) due to a faulty or worn out ball bearing. This is the first thing to check.

For inspection, the machine is lifted with a jack, and the ball joint is installed so that the wheel hangs in the air. Then, with the palm of one hand, take the wheel by the upper part, and the second hand by the lower one. Hands need to shake the wheel. If the reel is and is felt, then the ball joint must be changed. This should eliminate vibrations and knocking.

Human factor

This point can not be ruled out either. Sometimes it happens, but situations are very different. If, when replacing the wheel, you (or the master) were in a hurry to finish the work, you might not have to tighten the fixing bolts completely. Such inattention can lead not only to vibrations and beating on the pedals. So you can lose the wheel. As you can see, there are a lot of reasons. They are all different. All of them cause the same effect. You should carefully monitor the condition of the car, if necessary, in time to replace worn parts and components. Also, you should listen to the recommendations of car manufacturers.

So, we found out why the brake pedal brakes when braking.