What is a rear wheel bearing, how does it work and how to replace it? Rear wheel hub - self-replacement in the garage We disassemble the rear hub.

No vehicle component is subjected to such a load as the chassis. Hence the large number of faults. A good example of this is the rear wheel bearing. According to the plan and calculations of the designers, it must serve regularly for at least 100,000 km. run. But domestic roads and improper operation make their own adjustments. Very often the bearing fails without having served even half of the resource.

In this case, you can not pull with a replacement. It's not even that a bad bearing will cause an even more serious malfunction. In this case, we are talking about security. No need to think that such complex repairs can only be done in a car service. It is quite possible to replace the rear wheel hub bearing yourself.

Symptoms and Causes

Consider how to check the rear wheel hub bearing. Unlike many others, this fault can be localized with almost 100% accuracy. And by virtue of this, it is not only experienced, but also novice motorists, if you know the characteristic signs. The main ones are:

• Extraneous noise while driving. It is often mistakenly confused with the "howl" of the box, but in this case the sound does not disappear even when switching to neutral.
• An unpleasant sound is especially noticeable in the back seat, from the side of the faulty wheel;
• When cornering, a clear braking of the faulty side is felt, and in especially severe cases, clicks are heard;
• Wheel heating while driving.

All these are indirect symptoms, upon hearing which the motorist should be alert and conduct a more detailed check. To do this, using a jack, hang a supposedly faulty wheel. Now you need to unroll it well.

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A hum is heard - bad, but not yet fatal. Grasping the wheel with your hands from above and below, you need to shake it vertically. If there is play - the bearing is in a landfill.

What is it coming from? Surprisingly, only a third of the bearings "die" from the natural wear of metal parts. The remaining two-thirds are due to the following reasons:

• Manufacturing defects;
• Severe operating conditions. For example, constant driving on country roads at high speed;
• Lack of timely service. As a rule, lack of lubrication and dust and dirt on the bearing;

In addition, there is another reason - incorrect installation during a previous repair. However, this can be easily avoided if, before self-replacing the rear wheel hub bearing, study the sequence of work in advance and focus on some details.

Do-it-yourself rear wheel bearing replacement

Any repair of the running gear of the car cannot be called simple. Not because it requires special education and special skills. The difficulty, first of all, lies in the complexity of the repair. Removing some parts requires decent effort and a lot of patience.

We must be prepared for this in advance. You can’t drive a car with a half-disassembled rear hub into a service. If the determination is not lost - first of all, you need to stock up on a tool.

Tools and accessories

To change the rear wheel hub bearing with your own hands, you will need:

• Jack and suitable wooden support;
• The socket wrench, as a rule, is 30 and a suitable piece of pipe, as an amplifier for the crank;
• Key 12, for disc guides;
• balloon wrench;
• Round-nose pliers for removing retaining rings;
• Hammer;
• Chisel;
• Universal puller. You can do without it, but this requires some experience. Therefore, it is better to buy it, it is also suitable for the front hub bearing.
• Mount.
• And, of course, a new bearing. It does not need to be taken out of the package ahead of time to prevent dirt from entering.

How to change the rear wheel bearing on the VAZ 2110: sequence of actions

First you need to break the wheel bolts, and raise the car with a jack.

Attention, in no case should work be carried out on a car installed on one jack, it is imperative to additionally use a wooden stand of suitable dimensions.

This is due to the great effort that will have to be applied in the process of work. A car on a jack will be very unstable. The further course of action is as follows:

• The bolts are unscrewed and the wheel is removed;
• Now you can remove the hub boot.
• The wheel guides are unscrewed. Sometimes this is not easy to do, they "sour" in aluminum. The main thing here is not to disrupt the edges, so there is no need to rush;
• Next, the brake drums are removed. It all depends on how long they haven't been filmed. Sometimes they are dismantled "by hand", and sometimes you have to knock with a hammer, through a tree, from the back. There is another way. The guides are screwed into special holes. It must be borne in mind that the pins cannot be used to remove the discs, this will lead to the destruction of the aluminum thread. You can only twist them to a slight stretch, and then try to knock the disk through the tree. Should help.
• The hub nut is unscrewed. You'll have to try - it is twisted very tightly. Therefore, the collar is reinforced with a piece of a suitable pipe. Care must be taken as the vehicle will wobble.
• The hub is removed. Here, of course, it is better to use a three-legged puller. However, not everyone has it, so you have to use the "proletarian" method. It consists in the following. A wheel is installed on the hub and bolted, but not completely, but so that there is a gap of several centimeters between the disk and the hub. Thus, a kind of reverse hammer is obtained. With a few sharp jerks of the wheel, the hub can usually be removed. And that's already half the battle.
• Using round nose pliers inserted into the corresponding holes, the retaining ring is removed.
• The old bearing is pressed out or simply knocked out with a universal puller;
• The axis of the hub is carefully examined. Sometimes the clip of the old bearing remains on it. It needs to be removed. The bearing is removed, you can proceed to install a new one. But first you can inspect the working brake cylinder. If it has leaks, you will have to change it so as not to remove the drum again later.
• The axle and hub are inspected for damage, cleaned of dust, dirt and rust, and lubricated with Litol type grease.
• The new bearing is pulled out of the package, its cage is also easily lubricated along the seat;
• Using a universal puller, the bearing is installed in place. In the absence of a tool, the bearing can be pressed in with a vise. In this case, the clip of the old one is used as a mandrel. It is not recommended to hammer the bearing with a hammer, this can lead to its destruction.
• Now you can install the retaining ring;
• Carefully, using a mandrel or a pipe of suitable diameter, with light blows, the hub is put in place;
• Fixed with a nut;
• The brake drum is put in place, the guides are twisted;
• The wheel is spinning. For the sake of interest, it is worth trying to shake and twist it. There will be no extraneous sounds and backlash.

How to change the rear hub bearing on a VAZ 2110 video

Outcome

After removing the car from the stands and the jack, you can test it on the go. The enjoyment of silence and satisfaction from the work done will be provided. And most importantly, now there is confidence in the reliability and safety of your car.

Unfortunately, sometimes our cars break down and need to be repaired, it is necessary to change various parts, optics, and in some cases, the rear hub bearing needs to be replaced, although, as statistics show, this happens quite rarely.

How to recognize problems in the hub?

The fact is that the hub is the most important element of any rotating mechanism, including an automobile wheel. It is a central part of rotating parts with a hole for the possibility of fitting it onto an axle or shaft. Thus, its main task is to provide rotational motion. In order to prevent free rotation on the axle, rolling bearings or special plugs are pressed into the hub hole. In addition, it is thanks to the bearings that the hub, as well as the wheel, can rotate.

It is quite easy to notice that it is urgent to replace the hub bearing, in this case there is a characteristic knock in the rear lower part of the body, most often, it intensifies when driving on rough roads or when hitting pits, as well as mounds. While driving on a relatively smooth road surface, a hum may occur. In addition, the brake drum is very hot.

Checking if the rear wheel bearing needs to be replaced

First of all, the cause of such a breakdown is bad uneven roads, especially since in some cases our road surface can hardly be called a road at all. The second reason why the bearing may become unusable is the poor-quality material from which it was made. the rear wheel is not a very complicated process, so it can be done quite easily on your own at home.

However, before proceeding directly to the actions, you should find out whether it really is the case. To do this, you need to hang out the wheel from which the rumble is heard, and, swinging it with your hands, check the play. If, during the implementation of these actions, the backlash is detected, and at the same time there are deaf knocks, then it is impossible to delay the replacement. A bearing falling apart along the road will cause damage to other parts of the hub system.

The key to fast and high-quality work is the right tool and high-quality materials, in this case the bearing. Therefore, do not try to save on it, purchase options only from good manufacturers, because the service life largely depends on this.

Replacing the rear hub bearing - your steps step by step

From the tool you will need a screwdriver, a jack, a wheel wrench, lithol, a hub nut puller, sometimes chisels and a pry bar. Next, having prepared everything you need, we proceed as follows. We put the car in first gear, having previously placed “boots” under the front wheels. We raise the car with a jack and dismantle the desired wheel. Having unscrewed the guide pins, you need to remove the brake drum, most often it is knocked down. Now the hub nut is unscrewed with a special puller and the hub itself is knocked off the trunnion. It must come off with the bearing ring, otherwise it must be removed with a pry bar and a chisel.

In order to press the bearing itself, it is necessary to remove the retaining ring with special pliers and knock off the metal boot. Next, you need to lubricate the seat and use a special puller to press the new bearings back. At the same time, keep in mind that it is highly undesirable to score them.. Now back and retaining ring. By hitting the inner ring of the bearing, we put the hub back on the trunnion. Next, you need to tighten the trunnion and hush up its sides as best as possible. The process is almost completed, the pads, the brake drum and, of course, the wheel are being installed in their original places.

The rear hub bearing is a very important element of the rear wheel rotation mechanism. The main task of the bearing is to ensure that it smoothly ensures the rotation of the wheel. In this article, we will look at how to replace the rear hub bearing with our own hands, so as not to go to a service station, where they will take normal money for work.

When an unpleasant knock appears in the area of ​​\u200b\u200bthe rear wheels, mainly on bumps or small pits, and on a flat road a characteristic hum is a message to the motorist that the rear hub bearing is faulty and needs to be replaced. I do not recommend delaying the repair, as this breakdown can pull the rest of the components and assemblies of the car.

Video. Do-it-yourself rear wheel bearing adjustment

Note that in the previous article we considered its work and do-it-yourself replacement. Due to improper idle adjustment, the car has problems with increased fuel consumption, so I recommend paying attention to this article.

How to determine if the rear wheel bearing needs to be replaced?

The main cause of rear wheel bearing failures is our most beloved domestic roads, which are simply in a terrible state. Road bumps and pits simply knock out the bearing, it quickly goes into disrepair. Another reason, quite popular in recent years, is the poor quality material from which the bearing is made. Self-replacing the rear wheel hub bearing on a car is a fairly simple repair that can be done in a garage.

Video. Do-it-yourself installation of rear wheel hub bearings

How to determine if the problem is in the rear hub bearing? Everything is very simple, you need to raise with a jack the side where the knock or rumble is pronounced, take the wheel with your hands and swing it. Thus, we will check the wheel play and if it is found, an immediate replacement is required. A bad bearing can damage the rest of the system in the hub.

Replacing the rear hub of the VAZ 2109 does not require special knowledge. It is necessary in the event that it has been worn out.
The hubs, in turn, play a very important role. Without them, the wheels will not rotate at the desired speed, which will first lead to damage to the brake system, and then to the failure of the entire car.
Therefore, if there are any problems with the front hubs, they must be diagnosed in advance so that it is not too late later. Replacing the hub of the VAZ 2109 can easily be done on your own.

What causes damage to the rear hubs

Hubs often stop functioning properly if:

• In there is, though small, but a backlash. That is, they are slightly wobbly. At the same time, you need to ensure that this backlash does not develop into a “Mega backlash”.

Note: If the bearings wobble too much, they may damage other parts in the vicinity.

• A hum is heard during bearing operation. It usually gets worse as the speed increases.
  After that, when reducing the speed, it does not become less quiet. Both bearings need to be replaced at the same time.

Note: that is, if the hum is heard only from one side, then only one bearing is damaged. But most likely the second also did not last long. And besides, buying two bearings in a set will be much cheaper than buying them separately.

• The bearings are overheating. This is due to the fact that they begin to spin much faster than usual.
  This may cause it to boil too quickly. Therefore, the brake system will “cover up”.
• The wheel bearing is falling apart. Perhaps it is only at the initial stage of destruction.
  It needs to be changed urgently, as a faulty bearing can cause serious damage.
• Steering wheel not working well.
• There are shortcomings in the operation of the upper or lower ball bearing.
• Wheel bearing nut is loose. Such an oversight can cause backlash.
  In this case, you can do just screwing this nut until it stops. That is, the hub or its bearing should not be changed.

Rear hub replacement

To make a quick and at the same time high-quality replacement of the rear hubs, you must:

• Jack up the car.
• Loosen the wheel nut. For this, a 30 head is needed.
• Remove the wheel itself. To facilitate this process for yourself, you just need to pull it forward, and with the other hand slightly push it from behind.
• Remove the brake caliper.
• Removing , you will have access to the hub. In some cases, it sticks to the hub, so in order to pull it out, it should be pressed.
  Therefore, many people remove the hub along with the drum or disc (if the brakes are disc), and after that they buy both a new disc and a new hub.
• Unscrew the hub nut. It is fastened with three bolts.
  Since the bolts are too close, and there is already very little free space, it will be very difficult to turn the head.

Note: in order for a bolt that is too tight to “succumb”, it should be slightly warmed up. Hot iron is much easier to handle, although you need to be careful not to burn yourself, because it heats up to high temperatures very quickly.

• ​ Pry out the hub from the back with a screwdriver.
• Clean the seat from dust and dirt. Lubricate it thoroughly with a degreaser.
• ​ If a new hub was purchased without an oil seal (and usually they are sold that way), then the cuff can be removed from the old one and installed on the new one. Before installation, the gland must be lubricated with a special liquid.

Note: if necessary, sealant can be dripped under the oil seal several times to make it sit better.

• Put the hub in place. Slightly tighten the hub nut so that the hub does not fall out.
• Push it inside.
• Tighten all necessary screws on the reverse side.

How to replace a rear wheel bearing

To begin with, it is better to check whether the rear bearing is really defective. This process is best done with an assistant.
For this:

• Jack up the wheel. You can also use the lift or viewing hole.
• Start the car.
• Engage 3rd or 4th gear.

Note: The hum is heard immediately.

• In order not to interfere with the sound of the engine, you need to press the clutch, turn off the ignition and listen for extraneous sounds. If the hum is still observed, then the problem was, indeed, in the bearing.

To change the old bearing to a new one, you need:

• Loosen the hub nut. It's better to do it together.
• Release the steering knuckle from the ball joint.
• Remove the brake caliper by unscrewing the two 17mm bolts.
• Remove with hub. It's easier.
• If, after turning the disk, an incomprehensible sound is heard again (resembles a creak), then the problem was precisely in the bearing.
• Do not do without a special tool. It's a long bolt and nut.
• You will have access to the bearing.
• It is necessary to remove the retaining ring with the help of round-nose pliers, for which there is a special hole.
• Remove the bearing with a puller.

Note: you can not do this with a sledgehammer, as it will only spoil his "nest".

• Remove the bearing.
• Change it.
• Assemble everything in reverse order.

Note. The reason for the hum can also be that the bearing is poorly lubricated or there are cracks on its surface.

• ​ The surface must be thoroughly cleaned before pressing in (even a small grain of sand can affect the insertion of the bearing).
• Collect everything back.
• The most difficult thing will be to install the ball joint in place. Here you simply can not do without an assistant.

You can replace the hub with your own hands. Moreover, this process does not take too much time.
Moreover, now there are many photos and videos on the Internet on this topic. The instructions offered here can also help in this difficult matter.
She should be given maximum attention. All you need is to figure it out.
And most importantly, the price of home repairs will be much lower than that offered by car services. You will need to pay only for the hub or bearing (depending on what needs to be changed).

When moving, different parts of the car experience certain loads. They can be from road roughness, its slope, wind resistance and others. In order for people in the car to feel comfortable, all these loads must be balanced. Wheel bearings are one of such elements for balancing loads.

Rear wheel hub assembly.

They are nodes that work to maintain the supporting parts of the transport.

The bearing allows the car to roll freely on the road. It also participates in the transmission and reduction of the load on the rest of the machine. The bearings allow the wheels to rotate freely.

These bearings are front and rear. During their entire service life, they bear heavy loads, and therefore often fail and require replacement. Bearings can experience stress not only when driving on a bad road, but also when starting or stopping a car, and therefore the risk of wear is quite high.

When should you change?

During the operation of the car in the bearing, a natural process of wear of parts and aging of the lubricant occurs.

Bearing failure is not a serious problem. But this gives a lot of trouble to the owner of the car. When driving, a car with a bad bearing will make noise.

The main causes of bearing failure are:

1. Incorrect bearing installation and unadjusted clearance.
2. Movement damage.
3. Insufficient bearing lubrication.

Checking the operation of the bearing

If it happens that the bearing began to make unpleasant sounds, it is worth checking the part before replacing it. After a thorough diagnosis, a decision can be made on the need for repair.

It's easy to check: you need to raise the car and spin the wheel. If there is no noise, then the part is OK. When there is noise when the wheel rotates, the bearing needs to be changed.

Tools and working materials

To carry out the work you will need:

Replacement algorithm

Such work can be done on your own, but here you have to work hard.

Before you lift the wheel, you need to “break off” the hub nut - this is easy to do with a 30 head, a powerful wrench and a pipe. Do not forget to straighten the jammed side of the nut first!

Process:

1. The car is jacked up and the wheel is removed from it from the right side.

   

   In addition to the jack, be sure to substitute a reliable backup.

2. The brake drum is dismantled.

   

   We unscrew the studs and remove the drum.

3. The hub is unscrewed with a key. Here you need to use a puller, but you can work without it.
4. The retaining ring that holds the bearing in its seat is removed and the bearing itself is knocked out.
5. Then a new part is put in and lubricated. Pressing is carried out with a puller or a hammer with a wooden lining.

   

   In order not to damage the bearing during pressing, only the outer race should be acted upon. Don't forget the retaining ring!

6. Next is assembly.

   

   After the hub nut is completely tightened, we jam the side with a wrench.

It is worth noting that for the durability of the bearing, all work must be done carefully. If you make a mistake, it can cause serious consequences.

If you do not follow the installation rules, the life of the bearing can be halved.

Conclusion

As can be seen from the above, such work can be done on your own. But in this work you need to be careful. That is why, if there are no skills in this matter, it is worth contacting the service station so as not to waste your money on the purchase of a new part and the time spent on work.