From the article you will learn what is internalCV JOINT (left and right) on cars. Any machine is a complex mechanism that consists of many components. And they all directly or indirectly affect the technical condition of the car, a comfortable stay in it, a safe ride. On all machines with front-wheel drive (or full) there is such a detail as the CV JOINT - the hinge of equal angular velocity. On different cars, it can have individual dimensions, shape, design features. But the general principle of operation for all hinges of equal angular velocities is the same, regardless of whether it is installed on a used VAZ car or on a new German, American, or Japanese production.
What is the hinge for?
Эти элементы устанавливаются на автомобили, в which transmitted torque to the front wheels. The inner CV joint left and right are the same. When buying new hinges, you need to pay attention only to compatibility with your car manufacturer's products. From the price, as you know, depends on the quality of the product - the more expensive the hinge, the better it is. The hinge of equal angular speeds provides a reliable connection of the differential in the gearbox and the front wheel hubs.
Note that the wheel hubsare well below the gearbox. Therefore, a simple shaft will not be able to dock them. The cardan shaft will also be ineffective - the loads are large, it is impossible to turn the steering wheel in the right direction when driving. The ideal solution is a CV joint, which allows the wheel drives to operate in normal mode. And at the same time exercise the steering.
Typical damage
It is worth noting one feature - inner CV jointthe left one (“Logan” or VAZ is yours, it doesn't matter) and the right one wears out three times slower than the outer one. This is due to the fact that it is affected by a much smaller load. As for breakdowns, they are the same for internal and external. The most common is the natural wear of the balls in the hinge. Gaps increase, ball bearings take the form of eggs, which leads to the appearance of extraneous sounds, crunches, knocks.
Another common failure isdestroyed boot CV joint. Despite the fact that it is made of thick and durable rubber, the service life is not very long. The fact is that the whole mechanism works in the immediate vicinity of the road surface. Consequently, all the dirt, water, chemicals will fall on the rubber. It will begin to dry, cracks will appear, which will lead to ingress of aggressive substances - water, sand and others. The result is a very fast wear of the balls in the mechanism, knocking the constant velocity joint, makes terrible sounds.
Tools and accessories
For the work you need a standardset of tools - open-end wrenches, cap and end wrenches. Screwdrivers, jack, pliers - this is all that everyone should have in the garage. But we need special tools. For example, strippers for steering tips. In the event that you simultaneously change the ball joint, it also needs a puller. But if you intend only to replace the inner CV joint (left or right), then these tools will not be required.
It is worth noting that another one is needed for repair.the key is at 30. It is with its help that you need to unscrew the nut on the hub. It is desirable that this key had a large lever, since the nut is tightened with a very large moment. Also needed wheel chocks under the rear wheels to not allow the car to move. The presence of reliable supports is also necessary. And most importantly - a strong grip.
Preparation for repair
Before starting work you need to prepare the entire set of spare parts:
- Directly CV joint.
- Bellow CV joints.
- Two clamps.
- Lubricant based on graphite.
- Hub nut.
Only then can we begin to carry outrepairs. First of all, drain the gearbox oil. It is advisable to merge everything, so it will be easier. In fact, it is enough to pour 2/3 of the total. In this case, removing the hinge will not spill oil from the holes. Install stops under the rear wheels. Then, using a hammer and a suitable punch, unfasten the nut, unscrew it, lift the side to be repaired and remove the wheel.
Dismantling drive
To remove the drive from the car, you need to take a few more simple steps:
- Remove the pin from the tie rod end by straightening it with pliers.
- The key 19 unscrew the nut. If it does not give in, treat it with a penetrating lubricant and try again in a few minutes.
- Install the puller on the steering knuckle, rotate the main bolt clockwise. If necessary, tap with a hammer. After a few turns, the finger should come out of the fist.
- Remove the two bolts that secure the ball bearing to the front wheel hub.
- That's all practically, it remains only to knock out the left front (internal) with light taps of the CV joint, and only after that - the outside.
Removal and installation of CV joints on the drive
Now it is time to dismantle the hinges withdrive. To do this, you can use two methods - the simplest and somewhat more complicated. The difference is whether a vise is used or not, as well as whether you plan to use hinges as intended in the future. If "no" is the answer to all the questions posed above, then you can take the whole drive in one hand and the heavy hammer in the other hand, apply sharp and strong blows until the hinge is removed. Thus removed both external and internal CV joints.
To keep the drive in hand, you canuse a vice. Installation should be done carefully - everything is new, do not spoil it. After all, you can easily damage the thread, and this will affect your own safety. Therefore, when you fill the hinge on the half-shaft, be sure to use wooden spacers. They allow to exclude the possibility that the thread will be damaged. Pay attention to the fact that it is necessary to install anthers first on the semi-axis, and only after that to install the CV joints.
Drive installation
Now the crucial moment has come - installationassembled drive on the car. There is nothing complicated in this; it is enough to repeat all disassembly actions in the reverse order. In general terms, it will look like this:
- Insert the internal CV joint (VAZ or othercar, does not matter) in the gearbox. And he should enter so that the retaining ring inside is opened and fixed the drive. Also pay attention to the coincidence of the slots.
- Now it is necessary to pull the hub together with the stand outwards in order to install an external grenade into it.
- Fix the outer CV joint with a nut.
- Two bolts tighten the ball joint to the wheel hub.
- Install the tie rod end in place and tighten the nut. Fix it with a pin.
- Install the wheel and lower the side of the car to the ground.
- Tighten the hub nut with a wrench to 30. Use a hammer and chisel to fix it to the thread.
Conclusion
In conclusion, it would be worth talking aboutrepair efficiency. The fact is that you can install new CV joints. And you can purchase the entire drive assembly. The question is what will be better. Of course, the first option is cheaper. Without difficulty, you can replace only the CV joint inner left (the price of the kit will be approximately 1000-1500 rubles, depending on the manufacturer). And in this case it is perfectly acceptable to not touch the external grenade. But if you buy the entire drive assembly, it will cost you no less than 4,000 rubles. Accordingly, two drives are already at least 8000. But the reliability of the assembly, as a rule, will be much better than in the first case.
Also, do not forget that the slots ondrive axles gradually wear out. The older your car, the more wear and tear. The optimal way out is to replace not only the hinges, but also the semi-axes. And it is more convenient to do this by buying a drive assembly. But it all depends on the car. If it is old and easier to cut into metal than repair, then why spend so much money? After all, in the market when selling a car for the internal CV JOINT (left and right) will no longer pay.
