Replacement of the bearing of the front hub VAZ-2109 with your own hands

Replacement of the front hub bearing VAZ-2109 is carried out in case of its wear and tear. From this material you will find out what signs of breakage there are at the hub bearings, how to carry out repairs yourself, without recourse to specialists at the service station. Of course, emphasis is on "white" methods, and "black" should not be preferred. Already too dangerous - you can get the injury, and break the hub. But they, of course, will be considered in passing.

Symptoms of bearing failure

To begin, of course, it is necessary with what there are external signs of breakage of the bearing. After all, you need to determine exactly whether you need a replacement. At once it is necessary to make a reservation - there is no option to confuse the signs with the breakage of any other suspension element or drive. It starts with the fact that there is a terrible howl when driving. And with the increase in speed, it is getting louder and louder.

When driving in a car with a broken hub bearing, there is a feeling that you are in an airplane that is gaining speed and is about to take off. Perhaps, this is the main external sign of breakdown. To finally make sure of this, you need to hang out the wheel and pull it with your hands sharply. If there is a backlash, the feeling that the hub "walks", then there is a destruction of the bearing. Of course, maybe the nut on the hub can be unscrewed, then there is also a backlash. But in the presence of hum, it is still necessary to replace the bearing of the VAZ-2109 hub .

Preparation for repair

Prepare the car for repair. For this, set the anti-chock stops. Also, at least one support is required. Of course, a special rack is desirable, but since its cost is high, not everyone will be able to afford such a luxury. Therefore, you can use a cheaper option - several wooden bars. If you are replacing the rear hub bearing, the stops are placed under the front wheels, and vice versa.

Next, you need a tool. To carry out all the work as quickly as possible, you need to have several skills, as many keys and pullers. Without them, this can not be done without. Remove the cap from the wheel on which the repair will be carried out. As a rule, it is lubricated, so the nut will break relatively easily. Now you should talk about the tool that you need to carry out a replacement.

What instrument is needed?

The most important thing is a special puller for bearings. It can also be made from a bolt, nut, thick washer and a metal cup (not the one, of course, from which tea is drunk). But it will be easier to buy a ready-made puller, since it's relatively inexpensive. In addition, it can be used not only to repair the front bearing. When the rear wheel bearing is replaced, it will also come to the rescue. The universal thing is simple, so buy it, you will not regret it!

Another, no less important tool is the key to 30. Unfortunately, in stores they are extremely rare. You'll either have to look for it from your acquaintances, or do it yourself. However, the last thing is simple, you only need a head for 30 and a metal rod, which you need to bend out with the letter G, and the edge must be staked so that it has a square cross-section. After that, place this edge in the head and cook it well. Only in this way you can achieve maximum rigidity. To this key it is desirable to have a piece of pipe that will act as a lever - the nuts are very difficult to unscrew. The reason for this is a great moment when it is tightened.

Extrusion of bearing

To remove the hub, you will have to do a few manipulations. Replacement of the bearing of the front hub VAZ-2109 takes place quite quickly, within half an hour you can repair one side. First, unscrew the nut. To do this, you need to deactivate it using a puncture and a hammer. Then, using a key to 30, unscrew. Only after these manipulations can you raise the car and remove the wheel. Now you need to unscrew the nuts on the bolts that attach the hub to the rack. After you unscrew the two bolts from the ball joint. It remains only to pull the hub on itself to remove it from the drive slots.

Now the most crucial moment is the replacement of the front hub bearing VAZ-2109. They talked about "white" and "black" methods of hinge extraction. The latter is a method in which the hub is mounted on a suitable support, after which the bearing is simply knocked out by a large hammer. Lesson is not easy, it takes a very long time. And you can damage the hub without problems. For this purpose it is better to use a puller, with its help, the bearing will leave the seat much faster.

Installing a new bearing

The installation of a new bearing can be carried out in two ways. If there is a puller available, then there is no need to look for any complicated paths, press it with it. This is the best option. But if there is not, then what is to be done? Immediately on the mind comes elementary physics, namely - the expansion and compression of metal. Replacing the bearing of the front hub VAZ can pass relatively quickly, if you take into service a couple of laws of physics.

You have in your hands two elements - a bearing and a hub. The latter can be expanded, and the first one can be narrowed. You have enough hundredths of a millimeter of difference to easily install. To do this, the bearing is placed in the cold. If the winter is going on, in a severe frost, then the matter becomes simpler. In the summer, you can throw it in the freezer. And now pay attention to the fact that the bearing has protection, it is made of rubber, which can melt at high temperature. Therefore, you do not need to warm up the hub for a long time. 60-70 degrees will be enough to make the bearing easily in its place.

Assemblage of a nave

That's all, now it only remains to let the hub cool and fix it up. It is worth noting that the collapse of the wheels will be broken. Therefore, before removing the hub, mark its position relative to the post. Accuracy, of course, is not jewelry, but it will save you from tire wear. When the replacement of the front hub bearing VAZ-2109 is completed, start mounting all the elements in the reverse order. Install the hub in the rack and fix the position with the bolts.

Then attach the body of the ball joint to the lower arm. Incidentally, when repairing the hub bearing there is no need to ball out, just unscrew the fastening bolts. Therefore, a special puller when carrying out work is not needed. After the hub has taken its position, align it with the marks that you made before disassembling. Only then tighten the two nuts on the stand. Note that the top has eccentric washers, with their help, the camber of the front wheels is regulated.

Replacing the rear bearing

On the rear hubs, the replacement is even easier, since it is not necessary to remove the ball joint. Two bolts less. But if the brake system is changed, discs are installed, then you will have to dismantle the calipers completely. Only after that it will turn out to remove a nave. The rest of the replacement of the rear bearings is the same as described above. The same pullers, the same keys, everything is done by analogy.

Conclusion

In conclusion, I would like to note that the service life of bearings directly depends on the quality of the product. The grease in them is pressed from the factory, it is impossible to check its availability. Of course, as an option, you can remove the protective gland, but then the bearing will be damaged. But in this case, you can fill the grease yourself. To facilitate the rotation of the bearings, you can grease the whole semiaxis between them. But it's better when replacing the front bearing, do not touch anything. Just buy a spare part of a reliable manufacturer and hope that this is not a fake (which, by the way, is very easy to determine by external signs).