Chevrolet Niva bearing axle replacement
Niva Chevrolet belongs to the class of SUVs with full front-wheel drive. This is implemented through the installation of a rear axle, through which torque is transmitted to the rear wheels. For this, a system of gears and half shafts is used, which are located in the bridge. One of the elements that are subjected to excessive load, and, accordingly, the most quickly failing is the rear axle bearing. Therefore, it is necessary to diagnose its condition in time and, if necessary, replace it. How to do this - you can find out by reading this article.
Purpose of the bearing
This part is located in the Chevrolet Niva rear axle, closer to the outside of the car. Like any bearing, its main function is to smooth out the rotation coming from the rear axle. The axle shaft comes out of the gearbox, where it is driven by gears and ends with a flange on which the brake drums and the wheel are located. In order for it to rotate smoothly inside the structure, a ball bearing is installed on it.
It is mounted in a special seat on the bridge, where an increased load on the axle shaft is provided. To exclude its movement inside the bridge, a special locking sleeve is used, which provides double fixation of this element. An additionally installed stuffing box ensures the tightness of the entire structure.
It is important to remember that if the oil seal is damaged, the lubricant will leak, which leads to increased friction inside the bearing and a quick failure. Therefore, if damage is found, the seal must be replaced.
These elements are among the most exposed to stress, and therefore require periodic inspection and replacement.
Bearing device.
Like most parts in a car, the bearing has several indicators by which you can choose the necessary part:
- number
- inner and outer dimension
- height
Knowing these parameters, you can choose a replacement element that will be suitable for a given car and perform its functions correctly.
The number is the value in the catalog - 21212403080. In most cases, this data is enough to purchase a bearing model for a Chevrolet Niva in a store. If the necessary element is not available, you can find analogues, knowing the technical characteristics:
- inner diameter 40mm
- outer diameter 80mm
- height (meaning the thickness of the product) 23mm
How to notice a malfunction in time.
If you miss it in time and do not pay attention to the failure of this element, then right during the movement the rear axle may jam, which at high speed can lead to unpredictable consequences. Therefore, you need to periodically pay attention to the sound of the wheels in order to notice the characteristic rumble in time. This usually occurs even at the lowest speed. After that, it is necessary to measure the wheel play, which should not exceed 0.7 mm.
Replacement
To change a worn part, you must remove the wheel, then unscrew the brake drum and axle shaft. To do this, you need to raise the rear of the car with a jack.
The removal of the axle shaft is carried out in several stages:
- With the help of a jack, the bridge is raised so that when the axle shaft is removed, oil does not flow out of it.
- Having unscrewed the nuts by 17, the semi-axle is unscrewed
- If the repair is done on time and the axle is not jammed, then it can be knocked out with a hammer and a wooden board.
If an anti-lock braking system is installed on the Chevrolet Niva, then the work is carried out in a slightly different sequence. The difference in the locking ring with slots, which is clearly visible when compared:
If the vehicle is fitted with an ABS system, the following procedure is required.
