What is the use of the outer joint of the joints?

The outer joint of the joint is a part that serves to protect its tips from getting a different kind of dust, dirt and water. As is known, the design of the drive of the running system includes 2 SHRUSs per each wheel. And if the internal part is mounted on a special socket and transmits the rotational movement of the axle from the gearbox, the outer one passes from the shaft directly to the hub.

By its size, this part is slightly smaller than the inside. This is due to multiple loads, which affect it during the movement of the car. The CV joint anther is mounted on the wheel, so it experiences multiple compression. The outer part is more exposed to friction, and dust and water are also negative on the outside.

Function

In general, all anthers perform one function - the protection of any detail from the negative impact of the environment. In our case, the element protects the CV joints from dirt and water. And if cracks form on the surface of the first part, this leads to premature wear of the second one. The CV joints, when dirt gets in, begins to produce extraneous sounds (crunching). This can lead to an early failure. Therefore, the serviceability of the anther should be closely monitored.

How can I check the condition of the part?

If this mechanism is so important in the system of the car, accordingly, it must undergo regular diagnostics. To do this, you need to unscrew the drive wheel as far as it will go. The outer anther of the SHRUS in this case will be stretched to the maximum, which will enable us to qualitatively evaluate its current state. A serviceable part should not have cracks on the surface and certainly not be torn. If the outer anther is damaged, do not neglect its replacement, otherwise you will soon have to part with the joint, which costs much more money. The detail itself is not subject to repair, as it changes only in a kit. Therefore, to avoid unnecessary expenses, periodically check the condition of anthers.

How often do you need to perform diagnostics?

To prevent the machine from being exposed to water and dirt, it is enough to do the diagnosis once a month. During this period nothing will happen to the anther.

Price

Recently, the markets can be found alternative anthers made of plastic. Such products, despite their name, are quite elastic and reliable. In terms of quality, they are not inferior to classic rubber analogues. As for the cost, for plastic will have to pay up to 2-3 thousand rubles. The outer anther of the SHRUS, made of rubber, now costs about 1 thousand rubles.

And at last about the sizes of details for domestic cars of family VAZ. Proceeding from the manufacturer's recommendations, the outer anther of the CV joints on the VAZ of the ninth and tenth families should have the following dimensions: 20x80x75 mm. For the domestic "Niva" model 2121 and its modification 21214 suited anther CV joints universal universal size 21h120h85 millimeter.