In detail: do-it-yourself repair of a CV joint for a Niva Chevrolet from a real master for the site my.housecope.com.
We carry out the work on a viewing ditch or overpass. During operation, you will need to turn the drive shaft, therefore, put the machine in neutral and release the parking brake lever. It is possible to hang the machine on one post from the front or rear (depending on which shaft needs to be removed). In this case, you do not have to roll the car to turn the shaft.
The removal procedure for the front and rear drive shafts is the same. We install an adjustable stop under the transfer case. Using the "13" head with an extension cord, we unscrew the four nuts securing the side brackets of the transfer case suspension and two nuts of the cross member of the rear bracket of the transfer case.
We lower the transfer case on the stop so that it comes off the mounting studs.
Turning the shaft with an open-end wrench "13", in turn, unscrew the four nuts securing the shaft to the drive axle flange.
The nuts are equipped with Teflon inserts to prevent spontaneous loosening. It is recommended not to allow repeated use of nuts and promptly replace them with new ones.
To remove the nuts, insert the mounting paddle into the gap between the CV joint and the flange, then press the CV joint so that it slightly moves along the shaft splines and allows you to remove the unscrewed nuts.
Then we squeeze the CV joint with two mounting blades so that the fastening pins come out of the holes in the drive axle flange.
The transfer case, removed from the mounting studs, allows this to be done. If you do not free the transfer case, then the free play of the splined joints of both CV joints will not be enough.
Video (click to play).
Holding the drive shaft with our free hand, unscrew the four nuts securing the shaft to the transfer case flange ...
Install the drive shaft in reverse order.
As a car from the class of SUVs, the Chevrolet Niva, respectively, is equipped with all-wheel drive. But how, if not a cardan transmission, torque can be transmitted from the transfer case to the wheels. Today we will consider the complete picture of the rear cardan of a Chevrolet Niva car, its features, structure, how it is replaced if faulty breakdowns occur.
The cardan drive is a hollow steel tube. The metal thickness of the tube is 1 to 2 mm. This tube is welded on both sides:
The fork of the second hinge is connected to the splined tip and is put on it. Thus, a splined connection is provided. This connection is necessarily sealed with a gland, which is installed on the slide fork.
So, the torque on the Chevrolet Niva car is transmitted through cardans (front and rear), but we are only interested in the rear. On the Chevrolet Niva, the design of both the front and rear universal joints is almost the same, the difference lies only in the length of the device.
On restyled models, the design of the propeller shaft has an improved look, and on models since 2010, the Chevrolet Niva has been equipped with a drive shaft with hinges of equal angular ends. The components of the rear universal joint of the Chevrolet Niva models up to 2010 and the CV joint shaft of models from 2010 are shown in the photo below.
Image "A" shows a steel base called a shaft (2). On both sides at the ends there are crosses, connected on one side by a shaft flange (1) and a sliding fork flange (4). There is also a sliding fork (3).On the restyled models, the cardan design has already acquired a distinctive appearance from the earlier modifications of the Chevy Niva, and is a shaft with hinges of equal angular velocities (B). The image shows that the shaft consists of a tube (7), the SHRUS device itself (5) on both sides and, of course, anthers. The boot is designed to protect the connection from getting inside not only dust, but also water and dirt. It also keeps the grease from flowing out.
The operability check is carried out on the engaged neutral gear of the PP box. The car is driven onto an overpass or inspection pit and shoes are placed under the wheels so that the car can move without rolling off the overpass. We proceed to verification activities. The check is carried out for both types of structures:
External examination. All joints are inspected, whether there are any loosening of the bolt tightening, in what condition the boot is.
Then, with both hands, the shaft is grasped on the side where the connections are checked, and the shaking is carried out with sharp movements. If there is a slight backlash, then the design is faulty. There should be no backlash.
With sharp movements, it is necessary to turn the shaft around its axis of rotation, while holding the plug-flange of the hinge with one hand. There should be no circumferential gaps.
When the design of the device, so to speak, loses the balance of the plates, or all parts of the product are replaced, then upon completion it is imperative to re-balance the propeller shaft. If, after balancing, the product malfunction problems are not eliminated, then the shaft is replaced with all the elements. If the shaft is not balanced, this will gradually lead to an increase in the number of vibrations, especially at a speed of 60-80 km / h.
Cardan balancing is carried out either by visiting a service station, where the masters will perform all related work, or independently, which will save finances. But that is another story.
Removal and then replacement of the cardan on Chevrolet Niva trim levels until 2010 is carried out in the following order:
The vehicle is installed on the flyover. At the checkpoint, the lever is in neutral and the parking brake is in the down position. Shoes are installed under the wheels for safety.
Before carrying out the removal, it is necessary to make notches on the ends of the flanges, the drive axle and the transfer case at the joints. This will help return the shaft to its original position without the need for balancing.
The nut of the cardan bracket is unscrewed, while supporting the bolt so that it does not rotate.
All fastening nuts are unscrewed in the same way. There are four of them on one side. The nuts are Teflon coated to prevent self-rotation.
After removal, even if the shaft is not replaced, it is recommended to replace the nuts with new ones.
Three fastening bolts are removed from one side, and the fourth is left to fix the product in its original position.
We perform operations on unscrewing the nuts from the other side of the fastening. The order of unscrewing does not matter.
The last bolt is removed from one side and the cardan is removed, while its parts are reduced to the slot.
The product has been removed, now it is being repaired, and if it is impossible, it is replaced with a new one. The order of installation is the reverse of removal.
Many Shniv owners drive exactly new models, so it will be relevant for them to present the procedure for removing the universal joint from the CV joint.
You can not hold the shaft, but fix it with a strong rope to the bottom of the car, well, or use the help of a friend.
It is worth paying special attention to such an important question: How to put the boot correctly on the CV joint? This question is replete with its popularity on the forums, but unfortunately few people pay attention to such custom sites.So, how to replace the boot on the cardan with the CV joint of the Niva Chevrolet SUV is described below:
A new boot is purchased, if necessary, two, because one product is located on both sides. The cost of one is about 150-200 rubles.
The cardan is removed, the order is described above.
We take out the device from the pit and proceed to removing the old worn out boot. The plug is removed from the back of the hinge.
The retaining ring is removed from the spline part, and then the hinge is removed.
On the side where the boot is put on, another retaining ring is installed, which must also be removed.
We take out the hinge, and the order of the parts must be remembered. The worn boot is removed.
The boot can be removed by cutting, this sequence of steps is necessary to install a new element.
All parts are washed, then lubricated and put back on.
The boot is initially put on the shaft, and then all the other parts.
Clamps are installed on the boot.
Similarly, the boot is replaced on the other side. Everything is ready to assemble the gimbal into place.
Thus, every driver of a Chevrolet Niva car will be able to independently replace the cardan using this information, regardless of what year of release his SUV is. Successful repair work, dear Shnivavody!
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A grenade on a car is a constant velocity hinge. The knot received this name due to the fact that it looks like a military knot. It can also be called CV joint. With the help of it in the car, torque is transmitted from the motor to the wheel at different angles of rotation of the driving wheel.
Internal grenade on Shnivu
This part appeared at a time when manufacturers began to produce front-wheel drive cars. Initially, the torque was transmitted to the drive wheel using a conventional universal joint.... At the same time, the service life of the hinge was short, since it was constantly working under load. This problem gave impetus to the fact that a special unit (SHRUS) was invented, which could transmit torque to the wheels at different angles of rotation.
With the help of it, the torque is transmitted from the motor to the drive wheels. This is mainly front-wheel drive. Due to the constant velocity joint there is a uniform transmission of torque, taking into account the fact that the wheel is at a different angle relative to the car.
On a Chevrolet, a grenade can be:
As a car from the class of SUVs, the Chevrolet Niva, respectively, is equipped with all-wheel drive. But how, if not a cardan transmission, torque can be transmitted from the transfer case to the wheels. Today we will consider the complete picture of the rear cardan of a Chevrolet Niva car, its features, structure, how it is replaced if faulty breakdowns occur.
The cardan drive is a hollow steel tube. The metal thickness of the tube is 1 to 2 mm. This tube is welded on both sides:
Types of cardan shafts
1. Slotted tip; 2. Hinge fork.
The fork of the second hinge is connected to the splined tip and is put on it. Thus, a splined connection is provided. This connection is necessarily sealed with a gland, which is installed on the slide fork.
So, the torque on the Chevrolet Niva car is transmitted through cardans (front and rear), but we are only interested in the rear. On the Chevrolet Niva, the design of both the front and rear universal joints is almost the same, the difference lies only in the length of the device.
On restyled models, the design of the propeller shaft has an improved look, and on models since 2010, the Chevrolet Niva has been equipped with a drive shaft with hinges of equal angular ends. The components of the rear universal joint of the Chevrolet Niva models up to 2010 and the CV joint shaft of models from 2010 are shown in the photo below.
Comparison of cardan shafts of the old and new model
Image "A" shows a steel base called a shaft (2). On both sides, at the ends, there are crosses (their purpose and design can be found in the corresponding article), connected on one side by a shaft flange (1) and a sliding fork flange (4). There is also a sliding fork (3). On the restyled models, the cardan design has already acquired a distinctive appearance from the earlier modifications of the Chevy Niva, and is a shaft with hinges of equal angular velocities (B). The image shows that the shaft consists of a tube (7), the SHRUS device itself (5) on both sides and, of course, anthers. The boot is designed to protect the connection from getting inside not only dust, but also water and dirt. It also keeps the grease from flowing out. Checking the serviceability of the cardan transmission
The operability check is carried out on the engaged neutral gear of the PP box. The car is driven onto an overpass or inspection pit and shoes are placed under the wheels so that the car can move without rolling off the overpass. We proceed to verification activities. The check is carried out for both types of structures:
1. External examination. All joints are inspected, whether there are any loosening of the bolt tightening, in what condition the boot is. 2. Next, both hands grasp the shaft on the side where the connections are checked, and swing it with sharp movements. If there is a slight backlash, then the design is faulty. There should be no backlash. 3. With sharp movements it is necessary to turn the shaft around the axis of its rotation, while holding the plug-flange of the hinge with one hand. There should be no circumferential gaps.
