In detail: do-it-yourself repair of a Chevrolet Niva cardan joint from a real master for the site my.housecope.com.
We carry out work on a viewing ditch or overpass. During operation, you will need to rotate the drive shaft, so you should put the machine in neutral and release the parking brake lever. You can hang the machine on one rack in front or behind (depending on which shaft you need to remove). In this case, you do not have to roll the car to turn the shaft.
The procedure for removing the front and rear drive shafts is similar. We install an adjustable stop under the transfer case. With a “13” head with an extension, 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 “by 13”, we unscrew in turn the four nuts securing the shaft to the drive axle flange.
Nuts are equipped with Teflon inserts designed to prevent spontaneous loosening. It is recommended not to allow repeated use of nuts and to replace them with new ones in a timely manner.
To remove the nuts, insert a mounting blade into the slot between the CV joint and the flange, then press the CV joint so that it moves slightly along the splines of the shaft and allows you to remove the unscrewed nuts.
Then, with two mounting blades, we press the CV joint so that the mounting studs come out of the holes in the drive axle flange.
The transfer box removed from the mounting studs allows this to be done. If you do not release the transfer case, then the free play of the spline connections of both CV joints will not be enough.
Video (click to play).
Holding the drive shaft with your free hand, unscrew the four nuts securing the shaft to the transfer case flange ...
Install the drive shaft in reverse order.
Being a car from the SUV class, the Chevrolet Niva, respectively, is equipped with all-wheel drive. But what if not a cardan transmission can transmit torque from the transfer case to the wheels. Today we will consider the complete picture of the rear cardan of the Chevrolet Niva car, its features, structure, how the replacement is carried out if there are faulty breakdowns.
The driveline is a steel hollow tube. The thickness of the metal of the tube is from 1 to 2 mm. This tube is welded on both sides:
The fork of the second hinge is connected to the splined tip and put on it. Thus, a spline connection is provided. This connection must be sealed with an oil seal, which is installed on the slip fork.
So, the torque on a 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 cardan shafts is almost the same, the difference is only in the length of the device.
On restyled models, the design of the driveshaft has an improved look, and on models since 2010, the Chevrolet Niva is equipped with a drive shaft with hinges of equal angular endings. The components of the Chevrolet Niva rear cardan of models until 2010 and the CV joint shaft of models from 2010 are shown in the photo below.
The image "A" shows the steel base, called the 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 restyled models, the cardan design has already acquired a distinctive appearance from earlier modifications of the Chevy Niva, and is a shaft with constant velocity joints (B). The image shows that the shaft consists of a tube (7), the CV joint device itself (5) on both sides and, of course, anthers. The boot is designed to protect the connection from not only dust, but also water and dirt. It also keeps grease from leaking out.
The performance test is carried out on the included neutral transmission of the PP box. The car is driven onto a flyover or viewing hole and placing shoes under the wheels so that the car can move, but does not roll off the flyover. Let's get to the testing. The check is carried out for both types of structures:
External inspection. All joints are inspected, if there are any loosening of the bolts, in what condition the anther is.
Then, with both hands, the shaft is clasped on the side where the connections are checked, and the rocking is carried out with sharp movements. If a small backlash is inherent, then the design is faulty. There should be no backlash.
With sharp movements, it is necessary to turn the shaft around the axis of its rotation, while holding the fork-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 cardan shaft. If, after balancing, the problems of product malfunction are not eliminated, then the shaft assembly with all elements is replaced. If the shaft is not balanced, then 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 the service station, where the masters will perform all related work, or on their own, which will save money. 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 overpass. At the gearbox, the lever is placed in the neutral position, and the parking brake in the down position. Shoes for safety are installed under the wheels.
Before carrying out the removal, it is necessary to make notches on the ends of the flanges, the drive axle and the transfer cases at the joints. This will help return the shaft to its original position without the need for balancing.
The cardan bracket nut is unscrewed, while supporting the bolt so that it does not rotate.
All fastening nuts are unscrewed in the same way. Their number is four pieces 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 mounting bolts are removed on one side, and the fourth is left to fix the product in its original position.
We unscrew 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 being replaced with a new one. The installation order is the reverse of removal.
Many Shniv owners drive exactly on new models, so it will be relevant for them to present the procedure for removing the cardan from the CV joint.
You can not hold the shaft, but fix it with a strong rope to the bottom of the car, or use the help of a friend.
It is worth paying special attention to such an important issue: How to put the boot on the CV joint correctly? This question is replete with its popularity on the forums, but unfortunately few people pay attention to such user sites.So, how to replace the anther on the cardan with the CV joint of the Chevrolet Niva SUV is described below:
A new anther 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 procedure is described above.
We take out the device from the pit and proceed to the removal of the old worn boot. The plug is removed from the back of the hinge.
The retaining ring is removed from the splined 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 location of the parts must be remembered. The worn duster is removed.
The anther can be removed by cutting, this sequence of actions is necessary to put a new element.
All parts are washed, then lubricated and dressed in place.
The boot is initially put on the shaft, and then all the other details.
Clamps are installed on the anther.
Similarly, the anther is replaced on the other side. Everything is ready to assemble the cardan into place.
Thus, each driver of a Niva Chevrolet car will be able to independently replace the cardan using this information, regardless of the year of manufacture of his SUV. Successful repair work, dear Shnivavody!
Do you still think that car diagnostics is difficult?
If you are reading these lines, then you have an interest in doing something yourself in the car and really savebecause you already know that:
Service stations break a lot of money for simple computer diagnostics
To find out the mistake you need to go to specialists
Simple wrenches work in the services, but you can’t find a good specialist
And of course, you are tired of throwing money away, and it’s out of the question to ride around the service station all the time, then you need a simple ELM327 AUTO SCANNER that connects to any car and through a regular smartphone you will always find a problem, pay off the CHECK and save a lot.
We ourselves tested this scanner on different machines and it showed excellent results, Now we recommend it to EVERYONE! So that you do not fall for a Chinese fake, we publish here a link to the official Autoscanner website.
The grenade on the car is a joint of equal angular velocities. The name of the knot was due to the fact that it looks like a military knot. It may also be called SHRUS. With the help of it in the car, torque is transmitted from the motor to the wheel at different angles of rotation of the drive wheel.
Shniva internal grenade
This detail appeared at a time when manufacturers began to produce cars with front-wheel drive. Initially, the torque was transmitted to the drive wheel using a conventional cardan. At the same time, the service life of the hinge was short, since it constantly worked under load. This problem gave impetus to the fact that a special assembly (CV joint) was invented, which could transmit torque to the wheels at different angles of their rotation.
With the help of its torque is transmitted from the motor to the drive wheels. It's basically front wheel drive. Due to the CV 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:
Being a car from the SUV class, Chevrolet Niva, respectively, is equipped with all-wheel drive. But what if not a cardan transmission can transmit torque from the transfer case to the wheels. Today we will consider the complete picture of the rear cardan of the Chevrolet Niva car, its features, structure, how the replacement is carried out if there are faulty breakdowns.
The cardan gear is a steel hollow tube. The thickness of the metal of the tube is from 1 to 2 mm. This tube is welded on both sides:
Types of cardan shafts
1. Slotted tip; 2. Fork hinge.
The fork of the second hinge is connected to the splined tip and put on it. Thus, a spline connection is provided. This connection must be sealed with an oil seal, which is installed on the slip fork.
So, the torque on a 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 cardans is almost the same, the difference is only in the length of the device.
On restyled models, the design of the driveshaft has an improved look, and on models since 2010, the Chevrolet Niva is equipped with a drive shaft with hinges of equal angular endings. The components of the Chevrolet Niva rear cardan of models until 2010 and the CV joint shaft of models from 2010 are shown in the photo below.
Comparison of old and new cardan shafts
The image "A" shows the steel base, called the 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 restyled models, the cardan design has already acquired a distinctive appearance from earlier modifications of the Chevy Niva, and is a shaft with constant velocity joints (B). The image shows that the shaft consists of a tube (7), the CV joint device itself (5) on both sides and, of course, anthers. The boot is designed to protect the connection from not only dust, but also water and dirt. It also keeps grease from leaking out. Check of serviceability of cardan transfer
The performance test is carried out on the included neutral transmission of the PP box. The car is driven onto a flyover or viewing hole and placing shoes under the wheels so that the car can move, but does not roll off the flyover. Let's get to the testing. The check is carried out for both types of structures:
1. External examination. All joints are inspected, if there are any loosening of the bolts, in what condition the anther is. 2. Next, with both hands, the shaft is clasped on the side where the connections are checked, and swaying is carried out with sharp movements. If a small backlash is inherent, 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 fork-flange of the hinge with one hand. There should be no circumferential gaps.
