Questions about the remaining nodes rained down on my blog. Namely, how to determine a particular malfunction. And now several people are asking a question about a wheel bearing, namely how to understand that it is faulty. Today I will also try to explain simply and clearly how to determine a breakdown with my own hands ...
The wheel bearing is a very important element; without it, the car wheel would not spin. It undergoes really high loads and therefore must be made of durable high quality materials. However, from time to time, from high mileage or simply misuse car, this part may be damaged. You need to change it - MANDATORY, otherwise you can provoke a big accident.
Bearings are used to rotate the wheel hub with minimal resistance. They transmit the force applied to turn the wheel onto the shaft. An assortment of bearings is used on the rear shaft, when replaced it changes completely, depending on the version of the veculum on the front axle, angled radial bearings are installed. roller and radial. To install and remove bearings you need special toolsso you need to go to the workshop.
Bearings deteriorate over time. When the bearings are worn out, the noise gets louder and louder. A high noise level when turning to the left indicates a fault on the right side. Sometimes, due to wear and tear, you can create a game. This problem can be diagnosed. To do this, you need to apply the brake once while turning the wheels, and then turn the wheels without touching the brakes. in the game it is observed that the cause lies in the bearing.
Breakdown reasons
To be honest, the bearing is a very durable part of the hub. And to "kill" him you need to try! Most likely, you will fail all sorts of racks, rubber bushings and other hinged parts, but if you "try" you can disable this element too.
It is useless to repair bearings, so when a defect is found, the bearing must be replaced. Repairs require a suitable press to re-seat the bearings. Do not try to replace the court yourself using a club. Defective bearings must be replaced in time as moving with defective bearings is risky.
How to identify defects in a wheel bearing set. The condition of the bearing must be checked every time it is replaced. brake pads regardless of vehicle mileage. The check can be carried out in different ways: if the abnormal noise stops, this means that the fault is in the left wheel bearing. Right wheel should be managed in the same way. For a more detailed diagnosis, it is necessary to obtain special equipment.
1) High mileage ... No matter how trite it may sound, a high mileage of a car wears out all components, and the bearing is no exception. This is the main cause of the malfunction, the rest are secondary. After about 70 - 120,000 kilometers, different manufacturers have different ways. You will hear a characteristic crunch. Says that this part needs to be changed.
After that, the clutch should be engaged and the gear disengaged. It is important to listen carefully to noises, of which the source will be one of the wheels. Another method is to shake the wheel first in the vertical direction and then in the horizontal direction. The presence of play indicates a defect in the bearing or in the steering system. Then you need to step on the brake pedal and simultaneously shake the wheel in a vertical direction. If the game disappears, the device will need to be replaced.
The following symptoms indicate that it is necessary to check the condition of the wheel bearing. Hits while driving, strong vibration; deviation of the vehicle from a straight line; body tilt when braking or sudden turns; unusual noises; overheating of the wheel rim; uneven tire wear. The main reason for hub bearing failure is road traffic low quality... In such conditions, the component is exposed to high loads that cause cracks and chips on its surface.
2) Loss of tightness ... The bearing has a little grease, which is covered with special covers made of rubber or plastic. If they break down, the grease comes out and the wear becomes much greater. After a couple of thousand kilometers, you can hear a characteristic hum, which indicates a malfunction.
The wheel bearing has a fairly long service life. Its premature wear can be caused by the use of an unsuitable lubricant, as well as an excess or deficiency of the latter. In addition, component life can be reduced by contact with abrasive particles, dirt and moisture. Bearing performance can also be affected by poor quality components or improper installation. Incorrect setting of the interval can lead to misalignment and, as a result, to its damage.
Improperly balanced wheel balancing can also result in reduced bearing operating power. Replacing the wheel bearing set. To this end, attention should be paid to the following recommendations. Set the spacing by installing the tapered roller bearing, do not use sharp objects during replacement, as they may damage it, when installing on the axle, use the spindle to work on the inner ring; using a spindle, press down on the outer ring to ensure the bearing is seated. The hub bearing plays an important role in every vehicle.
3) Sloppy driving ... If you constantly fly into the pits on high speeds, it will also wear out this knot a little. Although, as I wrote above, other suspension elements will fail faster.
4) Incorrect fitting ... This is a secondary reason, during repair, a new bearing may be incorrectly pressed in, for example, obliquely. Thus, when driving, it will not stand correctly, which will wear it out quickly enough, after about a couple or three thousand kilometers, it will again need to be changed.
This allows the wheel to turn with minimal resistance and takes the weight of the vehicle. To be able to fulfill its full function, it must be in a very good condition... The first symptom of a problem is usually noise, explains the car's Wilhelm Kunchev. The noise carrying the hub is usually simple in speed. A whistling, noisy noise of any kind in the area of \u200b\u200bthe wheels is a sign that a problem has arisen that requires immediate attention. If ignored, the consequences can be serious, including fatal, if a wheel breaks down at high speed.
5) If pulled too tight ... This happened especially on our domestic cars, the bearing was overtightened during replacement, so it heated up more than usual, which also contributes to a decrease in resource and subsequent breakdown. So you need to take into account the twisting force, usually it is indicated in the instructions.
Camping is accompanied by a rotation to the left or right. When loaded, the sound is picked up and the oscillation stops in the opposite direction. If the compromised bearing does not change, it can lock up because it is accompanied by heating material rolling in the hub. It may burst and the wheel will fall. The front bearings burst faster because the car is heavier. On modern cars bearings are sealed and free from lubrication, maintenance. When the time comes, they must change - they have no protection or repair.
These are all the main reasons, but as you can see the last two are the "crooked hands" of the car service. So we change only at proven stations that give a guarantee for work. Sometimes it is more profitable to look at the official stations.
Breakage symptoms
Here is the most interesting thing - how to determine the malfunction, there are several hundred percent methods.
Older cars have two tapered bearings. After a couple of years, they can be lowered and lubricated to prolong their life. This change does not need to be done in the kit - two in the front or back. Only the one who started you changed, advises Kanchev. Another problem that sometimes occurs with hubs is their weakness. This can cause the car to "play". This is sometimes confused with worn control components or requires adjustment. For most front-wheel-drive wheels, the wheel does not need to be moved at all, but in some cars from the rear it is acceptable for the front bearings to play 2-3 mm.
1) "Dry" crunch ... When the wheel bearing fails, there is a crunching sound when driving. These are rolling spherical elements. They broke the clip they were in and are now not evenly spaced. You will not confuse this sound with anything, believe me, this sound is perfectly heard in the cabin. This is the very first symptom - how such a sound appeared, we immediately go to the service station.
If you rotate the tire by hand, any unevenness, resistance, or noise is an indication of wear or damage to the bearings and must be replaced. If this is done carefully and the hole is avoided, which is difficult in Bulgaria, the camp will live longer, says Wilhelm Kanchev. Another way to protect yourself is not to load your car. If he systematically passes five people and his wheel falls into the hole, the camp will soon start picking you up. If someone drives very often and applies the brakes abruptly, the bearing grease evaporates.
2) Vibration ... If the bearing is already well worn, then vibration should appear, both in the steering wheel and in the body. This suggests that the spherical elements have already worn out the bearing cage well, a little more and a "wedge" may come. We are urgently changing.
3) The car is pulled to the side ... Also possible, part with faulty item does not work normally - so to speak, it stuck a little, and therefore the car will pull in one direction or another, as if it were wrong.
This leads to a reduction in their lives. Practice shows that most camps carry taxis, says the racer. The carrier bearing can be damaged prematurely due to poor mounting, dirt, or loss of lubrication. The seals are the vulnerable part, and if it leaks, there is water and mud in the camp. If this problem is not detected and removed in time, the camp is doomed.
Repairing this part is not expensive, but it still depends on the vehicle. The wheel bearing is the centerpiece of the chassis system; The radial bearing is responsible for connecting the wheel to the steering wheel pin and hub. The handling of the car depends on the quality of this part and its regular maintenance.
What happens if you don't change
Many motorists ride with faulty wheel bearings, and even accelerate to 100 and more kilometers per hour - guys, this is very dangerous, remember this is the connecting element of the wheel, which is responsible for its rotation. If it is broken, then at any moment it can jam. And this is an abrupt stop of one of the front wheels. Now imagine if you have a speed of 100 km / h - at this speed you will just fly to the side of the road. best case, but you can fly to the "oncoming", and here it is not far from the accident. There have been cases when the cars overturned. So guys, the hub bearing is very dangerous, if you do not want to change it, drive at low speeds, up to 40 km / h, otherwise everything may end up very badly.
They require careful installation, as improper installation can lead to component failure. Radial axial bearings. They resist axial and radial loads due to displacement towards rolling parts.
- Single row deep groove ball bearings.
- Radial cylindrical or double row bearings.
- They can handle double the load on single row bearings.
- Thanks to their design, they do not need regular maintenance.
- Rotating part.
- Cell.
We determine the malfunction ourselves (at home)
In general, in addition to the crunch that you will constantly hear when driving. You can determine by the signs yourself literally near the house.
1) We put the car on a flat, preferably asphalt area.
Sedimentation rear wheel happens less often. To prolong the life of the parts, you must adhere to the rules of car operation and regularly check the bearing for grease and dirt. Overheating of components; damage or destruction of the outer ring; bearing displacement or tilt angle change; excessive tightening; the occurrence of other damage; component deformation. Rotation and movement in a straight line; the car stretches to one side while driving; vibration in the steering system; when braking and turning, the car is tilted too much; the wheels are very hot; premature and excessive tire wear. Violation of current rules; uneven load on the front and rear axles; violation of the bearing clearance; deformation of the wheel or other elements; lack of lubrication; dust and dirt; using lubricants Low quality; incorrect installation. For wheel bearing failure, repairs are not recommended.
2) Check the vertical axis backlash. To do this, take the wheel at the top point and try to swing it with all our might. If you hear clicks and there is a backlash, then this is definitely a "hub".
3) For full confidence, you can lift the wheel on a jack and rotate it. If a crunch is heard, it is a malfunction.
Replacing wheel bearings should be done by professionals. If you decide to fix this problem yourself, you will find the following steps here. Raise the car using the jack on the side where the part is damaged. Install a new bearing and fry it. Follow the same steps in reverse order and install the wheel. Check the vehicle is working. We offer the purchase of spare parts purchased anywhere in the shortest possible time and all free of charge. We guarantee high quality each component.
- Place support under the bike you will be working on.
- Select a wheel, brake caliper and wheel.
- Unscrew the hub bolts and disassemble this part.
- Pick it up and explore.
4) There is one more method (works only on front wheel drive), but it is advisable to do it on a lift. You need to raise the car, start, turn on the gear and accelerate the wheels, then turn off the engine and listen. The side that will make noise, crunch and vibrate is faulty.
Their role is obvious, but few drivers yet realize the importance of this element. So what are the tasks about wheel bearings? What bearing defects should we be prepared for? By definition, a bearing is a piece of a vehicle supporting another component of it so that it can have relative rotational motion. In short, in the case of a car, the wheel bearing neutralizes the car's rolling resistance. Phenomenon such as wheel lock or loss of control vehiclecan have a really negative effect.
Now a small video version of the article
About replacement
What I want to say - change the bearing correctly, it is quite difficult to do it yourself. You need at least a couple of pullers, as well as knowledge of the car's suspension. It is not for nothing that many automakers completely change the wheel hub.
When replacing, it is important:
1) It is possible to press in the bearing only with special smooth cages (ideally use the housing from the old one). Pressing in with "rolling elements" is not allowed.
2) Do not press in with sharp tools, which can damage the O-ring, which will then lead to grease leakage.
3) When pressing in, it is necessary to keep the correct clearance and plane, distortions are not allowed. Wrong clearance - misalignment will lead to quick failure.
That's all, in conclusion I would like to say that I myself changed the wheel bearing a couple of times. IN garage conditions, and even if you do not have the skills to do this it is very difficult (you can ruin a new one), so it's better not to spare the money and give it to a proven station. Save both nerves and money and effort.
That's all, read our AUTOBLOG.
Emergence extraneous noise on the side of the front suspension when the car is moving can be caused by a number of faults. One of these might be strong wear wheel bearing left or right front wheel, the replacement of which may well be done by hand, since this does not even require a pit or a lift. In this article, you will learn more about how to check a wheel bearing. There are several ways to identify this malfunction.
Indirect signs of front suspension hub bearing wear
In this section, you will find symptoms of a defective wheel bearing, as well as how to check the front wheel hub bearing.
- A characteristic sign that you need replacement of the hub bearing in Kalina, there is an extraneous even noise (hum, hum) from the left or right wheel when driving. As a rule, in this case it is amplified by high speed (more than 80-90 km / h), so it is most often seen when driving on the highway.
- Due to the noise generated by the air flow and when the tires come in contact with the road, it is far from always possible to accurately determine the source of the sound. It is noteworthy that from the passenger compartment noise from the right side is often perceived as from the left and vice versa. In this case, you need to pay attention to how the sound changes when cornering, since at this moment an increased load is placed on the bearing. So, the disappearance of sound when turning to the left and its amplification when turning to the right indicates the wear of the left hub bearing... Accordingly, the opposite symptoms indicate wear on the right.
Diagnostics of the wheel bearing of the left and right front wheel
How do you know which wheel bearing is buzzing?
- To be sure of a malfunction hub bearings front left or right wheel, or lack thereof, it is better to check for standing car... By hanging the front wheels and engaging parking brake, it is necessary to "accelerate" the standing car in fifth gear to 120 km / h and listen from which side the noise is heard. Ideally, this is best done with a phonendoscope.
The disadvantage of the above diagnostic method is the noise of the engine running, which can drown out the sound, and the lack of load. A more objective symptom is the presence of backlash, which can be detected by shaking front wheel hands grasping its upper part. In addition, the wheel can be rotated by hand, paying attention to the presence of extraneous sounds and smooth deceleration. In this case, the load is low, but there is no noise from the engine and gearbox. It is better to check it with an assistant who will press the brake pedal without blocking the wheel completely - if the sound disappears, it is almost certainly the bearing.
