How to remove the inner CV joint on a Niva - step-by-step instructions

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Drivers did not know what a constant velocity joint, or CV joint for short, was until front-wheel drive cars began to conquer the market. After all, the wheels must turn, but this is impossible to do with the help of a cardan transmission. CV joints (popularly called “grenades”) are also found on cars with all-wheel drive today—the Russian Niva 2121 is no exception in this sense. If you take care of the hinges and change the anthers on time, the factory-assembled unit can last more than 100 thousand km (it all depends on operating conditions). But sooner or later the X-hour comes, and replacing the CV joint on the Niva becomes inevitable. The process is not easy, including choosing a node in the store. But more about everything.

CV joint device VAZ 2121

Both hinges include fundamentally the same elements, differing only in size and cost.

Main parts:

• cup-shaped housing with driven shaft;
• “fist” in the shape of a sphere with a drive shaft, forming a CV joint cage;
• steel balls located in special grooves of the holder and made of special types of metal.

When it is necessary to make a turn, the angles of both shafts change, the balls move along the grooves and transmit physical force to the wheels of the front axle. Usually a “Rtseppa” (“six-ball”) hinge is used. It cannot transmit torque from the gearbox on its own: for this, a shaft is used - a hollow steel pipe connecting the outer CV joint with the inner one. The latter operates continuously at a rotation angle of 10 degrees. The external unit operates in the same way, provided the movement is smooth. But as soon as the wheels turn, the angle at the outer joint increases to sixty degrees.

If the car moves on an uneven road, the distance from the outer unit to the inner one changes, so the shaft is mounted in such a way that it can either move in or out.

Structure

Important! If you decide to replace the CV joint yourself completely or change its individual parts, you need to understand its design, and only then dismantle it and then replace it.

Replacing a CV joint is an expensive procedure, which in a service center will significantly affect the thickness of the car owner’s wallet. The part is made of heavy-duty materials that are resistant to mechanical stress and aggressive environments. Accordingly, these materials, like the part itself, are quite expensive. It is designed for long-term operation, but not always road conditions and the driving style of the drivers themselves allow all parts of the chassis to be used for many years without the slightest breakdown.

And the cost of replacing a CV joint will be approximately half the cost of the mechanism. That is why many try to replace it themselves in order to save some money on repairs. But not everyone is born an auto mechanic, so the average person must first find out what parts the mechanism consists of. Here is their list:

The anthers perform two functions at once: they protect the hinge from dust and dirt. After all, in essence, a CV joint is an external part that is located on the bottom of the car. This means that all small particles when driving fall on the hinges in the same way as on the rest of the chassis.

On each wheel drive there are two mechanisms, which have almost the same structure, only slightly different in shape and size. As a rule, left and right CV joints are interchangeable on most car models. If you are in doubt, it is better to go to a car service center and ask if it is possible to buy left-handed hinges for right-hand drive on such and such a VAZ model for installation on right-hand drive, or vice versa.

How to remove the drive

Untimely replacement of the hinge will lead to dire consequences: in the worst case, the drive may jam, which at high speed can lead to an emergency situation. Therefore, it is more advisable to replace the unit in time. How to change the CV joint on a Niva? It is best to remove everything assembled; for this you will need:

• socket head wrench for 13 and 27 with a wrench (preferably a ratchet type);
• extension to the wrench in the form of a hollow pipe;
• hammer;
• flat screwdriver (you may also need a chisel);
• a jack and a wheel wrench for removing the wheel.

Inner CV joint
Place the car on a viewing hole, and if possible, on a lift. In the first case, you will need a jack. But first you need to remove the hub nut cap with a screwdriver and loosen it, then remove the wheel and unscrew it completely.

Further steps to replace the grenade on the Niva:

1. Using a 13mm socket, unscrew the nuts securing the ball joint to the steering knuckle.
2. Using a jack, smoothly lower the lower arm onto a suitable wooden block.
3. Remove the shaft from the hub by moving the steering knuckle up and back (secure it with wire), and removing the retaining ring to remove the outer joint.
4. Remove the 3 pressure plate nuts securing the inner CV joint. Pry it up with a flathead screwdriver and pull the internal assembly out of the gearbox.
5. If it is inconvenient to remove the hinge when assembled, disconnect it.

Below see how to remove the CV joint on Niva 21213 - video.

Dismantling the drive assembly on a Niva 2121 car

As for the repair procedure, we present the main points below:

• First of all, we lift the car with a jack (it is also advisable that it is in the inspection hole).
• Using a screwdriver and a hammer, knock off the protective cap of the hub nut and unscrew it.
• Using a 13mm wrench, unscrew the nuts securing the ball joint to the steering knuckle.

Now you can remove the drive shaft from the Niva's front wheel hub. And to remove

/replace
the outer
CV joint, remove the retaining ring.

To release the internal one, you must first unscrew the three nuts securing the pressure plate.

• Then we pry up the plate with a screwdriver or a sharp chisel and pull out the inner CV joint from the front axle gear housing.
• Since the space between the shock absorber and the front suspension spring is minimal, it is not very convenient to pull out the drive assembly, so it can be disconnected.
• If necessary, defective CV joints are knocked down and new ones are installed in their place in the reverse order.
• It is imperative to apply a lubricant, such as a CV joint, to each of the grenades and securely fix the boot clamps.
• The assembled drive is installed on the Niva in the reverse order.

How to replace a grenade

Once you have the inner grenade in your hands, collect the bearing balls if they have fallen out and place them in a container of kerosene. Remove the retaining ring from the shaft that holds the race and separator. Take a drift and, hitting it with a hammer, knock down the hinge, hitting the end of the cage. Remove the retaining ring and thrust ring. Clean all removed parts with a metal brush and rinse in kerosene.

Disassembling the hinge

Japanese duster Maruishi

In Japan, Taiwan and China, there are quite a lot of companies producing similar products. Replacing the inner right Niva 2121, replacing the CV joint boot on VAZ Niva 21213 drives!. But at that time, when there were Japanese “crooks” in my family, I came across this particular brand. The manufacturer Maruishi (Maruishi) deals with rubber bands, anthers and corrugations for the entire Japanese automobile industry, so finding the right size using the selection method is generally not a problem. Corrugated rubber is not afraid of either heat or frost. Replacement of tripoid, inner CV joint boot. The inscription on the boot “made in Japan” warms the soul. The boot in our case can be either external or internal. It is better to use it as an external one. Equipped with tape clamps.

How to put it in place

Reassembly begins with lubricating the shaft and installing the boots in their original places. Next, the retaining rings are put back in place - it is better to do this in a vice. The next point is to install the hinge on the shaft: feel for the splines and lower it until it comes into contact with the ring located outside. Now, through the wooden spacer, hit the CV joint with milk so that it snaps into place. Move the part in different directions to make sure it is securely fixed. All that remains is to install the anthers with clamps.

Installation of the unit is carried out in the reverse order of removal. In this case, it is recommended to use screw clamps rather than standard ones. The hub nut needs to be installed with a new one. At the final stage, do not forget to use it to adjust the clearance in the bearings.

Internal wheel drive joint - CV joint (removal, disassembly, boot replacement)

We carry out the work when replacing the hinge, its cover and lubricant.

READ What oil to fill in Chevrolet Niva

We clamp the drive shaft in a vice with soft metal jaw linings.

We mark the relative positions of the body, separator and holder.

... use a soft metal drift to knock down the clip.

We wash the body, separator, cage and balls. Traces of corrosion, scuffs and dents on the tracks are not allowed. If they are found, replace the hinge.

We assemble the hinge in the reverse order.

During assembly, we install a new retaining ring and rubber boot on the shaft.

We put 3 CV joint-4 lubricants into the 150 cm hinge.

We install new clamps (before tightening the clamps, release excess air from the cover by prying the seating belt of the cover with a screwdriver).

Recommendations for choosing CV joints on Niva

The first thing you should pay attention to is the number of teeth (splines) on the hinge. Until 2004, there were 22 of them (the hub corresponded to this number), then there were 24, but sometimes units with 22 were still installed. So you just need to count them on your machine. But if everything is clear with this point, another question arises - about the manufacturer. Most experienced Niva owners recommend purchasing factory hinges, complete with shafts. The only negative here is the huge number of counterfeit products. There are only three main large suppliers: VAZ, BelMag, Trialli. Another company, LGR, overcomes the 5% sales barrier.

Alternative manufacturers:

• Pilenga;
• STK;
• Hofer;
• Baker;
• G.K.N.

CV joint from AvtoVAZ

Which to choose

Depending on the year of manufacture, the Niva 2121 can be equipped with CV joints with 22 or 24 splines. Before 2002, the first version was distributed, after 2002 – the second. According to another version, 22-spline “grenades” were common until 2007.

The surest way to determine the type is to remove the hub washer and count by hand.

Operating experience shows that the best quality grenades for the Niva are produced by AvtoVAZ; also, if you are confident in the origin of the product, it makes sense to pay attention to the products of CORAM and Pilenga.

The main symptoms of CV joint failure on Niva

The first sign is the appearance of a characteristic crunching sound from one, or less often both, wheels while driving. An unpleasant sound appears when turning and when accelerating. The crunch is heard especially clearly during a sharp start. And another symptom is jerking during acceleration. Having realized that replacing the CV joint on the Niva is needed in the very near future, it is necessary to determine what exactly has failed.

You can do this in two ways:

1. On a stationary car. You will need to move your hands, tug the shaft connecting the hinges - there should be no play. Its presence indicates the need to replace the unit. To check the inner CV joint, hang one of the wheels and turn on first gear - the faulty unit will certainly crunch when the wheel rotates.
2. When moving. You need to drive on a flat road, alternately turning the steering wheel in one direction or the other. A crunching sound will be heard from the side where the outer unit is faulty. To check the internal joints, you will need to overcome small holes and bumps at low speed so that the wheel drops as low as possible. Where the crunching sound comes from is where the internal CV joint on the Niva needs to be replaced.

It should be noted: a crunch in the hinges indicates that replacing the Niva 2121 internal or external CV joint is inevitable. The hinge can still be saved if you notice it in time.

Primary signs include:

• boot rupture;
• the appearance of grease on the inner surface of the wheel due to a torn boot;
• a whistling sound reminiscent of friction against metal;
• weak jerks when moving away (the grooves of the “grenade” begin to break), sometimes weak clicks (2-5).

Auto parts for foreign cars, auto repair

Chassis Replacement of CV Joints on a Chevrolet Niva Every car has equal angular joints, which are called grenades; they have this name because of their similarity to a military object.

Thanks to it, when turning while driving, torque is transmitted from the engine to the inner CV joint. This element in the car appeared when they began to produce cars with front-wheel drive, and before that, torque was transmitted through a conventional cardan.

Further, it will intensify even with small turns of the steering wheel. Replacement procedure: A set of wrenches, pullers, and plumbing experience will be required.

Replacing the Inner CV Joint Niva Chevrolet Video

The body is raised with a car jack, a reliable stand under the car and wheel chocks are installed. This helps protect the repairman from possible injuries.

Before lifting the car body, loosen the hub nut. Initially, 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 was constantly working under load.

Inner right CV joint on a Chevrolet Niva - how much does it cost to replace a grenade

This problem gave impetus to the invention of a special CV joint unit that could transmit torque to the wheels at different angles of rotation. It's mostly front-wheel drive. Due to the CV joint, there is a uniform transmission of torque, taking into account the fact that the wheel is located under the corner of the car.

On a Chevrolet, a grenade can be: Outer CV joint Inner CV joint Like all other parts in the car, this unit has its own specific service life.

The cost for spare parts was rubles. And by the way, it’s also cheap, I called 3 stores in our city in advance and the prices are different everywhere. So don’t rush to run to the first store you come across.

For example, I saved rubles on these same spare parts if I bought them in a store; the Chevrolet Niva inner CV joint is closest to service. Photo of the entire set: By default, the oil that is poured into the automatic transmission during the production of Opel Astra N cars is designed entirely for its service life.

Russian conditions, climate, quality of roads, etc. Replacing the Timing Belt Logan 1.

You just need to look at what exactly is coming in years. And according to the regulations, the Chevrolet Niva inner CV joint with the belt always changes a few more parts, not all of them are related to m Replacing the Rear Hub of a Skoda Fabia Replacing the rear hub bearings Replacing the rear hub bearings Hub assembly of the rear wheel 3 - Brake drum 7 - Bolt securing the trunnion to the lever 11 - Castle washer 1.

Remove the brake drum, see Chapter Brake system.

Using a flathead screwdriver, remove the oil seal from the brake drum assembly - try How to replace the cabin filter in Ford Focus 1, 2 and 3 Replacing the Ford Focus cabin filter is an integral part of the technical work of each car of this line.

Typically, failure of this component indicates a problem with your furnace or air conditioning. At the same time, they begin to work much weaker than the inner CV joint.

In addition, the filter is broken

Part Features

Constant velocity joints - these elements were created specifically for front-wheel drive vehicles; previously, torque was transmitted to the wheels using a simple cardan. Due to the large load on the hinge, the service life of the part was very short. To avoid such a situation, this node was created.

An outer CV joint is needed to transmit torque evenly when the wheel is at different angles. CV joints can be both external and internal.

There are certain parts in the assembly that are constantly moving, so often the parts burst or completely wear out, and this requires their urgent replacement. Repair of the device is carried out when damage to the boot is detected in time, when dirt, dust and other substances do not have time to penetrate inside the grenade.

To identify a breakdown on a Niva, turn the steering wheel all the way in any direction while driving. If there is a problem, then you will hear a characteristic creaking sound in the area of ​​the front wheel. During the repair work, you should determine how many hinges need to be changed - one or two at once. Professionals advise implementing the procedure comprehensively.

Step-by-step instructions for a quality replacement

If the unit has just begun to signal a problem, then repair work can extend its service life. If it is completely worn out (diagnosis is recommended at a service station), it makes no sense to carry out work to resuscitate the parts or put the mechanism in order - a complete replacement is required.

In most cases, if there is severe wear, the outer CV joint on a Chevrolet Niva is replaced.

It is important to remember that the upcoming process will require time and effort. The car needs to be driven to a special pit to facilitate access to the components and the CV joint itself

Tools:

• wrenches (set);
• hammer with extension;
• pullers

Experience in plumbing is required if the replacement is carried out in-house.

Replacing the outer CV joint

To change the outer part of the pair in the assembly, you will need to completely remove the axle shaft with the “grenades” installed on it from the car. The sequence of actions in this case is as follows:

• the body needs to be lifted (a car jack is used);
• install a stand to minimize the likelihood of an accident if the jack fails to cope with the task;
• Anti-recoil shoes are installed.

The safety measures taken will prevent damage and injury. The main point: before lifting the body, you should loosen the hub nut. For this job you will need a socket and a wrench extension. Further sequence of actions:

• remove the front wheels;
• unscrew the lower fastening that holds the front shock absorber;
• move it as far as possible to the side so that further work is not complicated;
• secure (use any available means).

After this stage, you need to unscrew the bolts directly on the ball joint. The next part of the work:

• completely remove the nut on the hub;
• Pull towards you and remove the outer CV joint.

The outer joint can be replaced without first removing the axle shaft. Sequencing:

• it is necessary to release the fastening clamp that belongs to the boot;
• move as far as possible on the axle axis;
• you will need to hit the CV joint body with a hammer (with an extension);
• Continue making blows until it is completely removed from the axle shaft.

Next stage:

• replace the retaining ring, which is located on the axle shaft;
• install a new part.

To install the hinge, all steps will need to be carried out in the reverse order of steps.

Replacing the inner CV joint

The external component of the “grenade” may also require replacement. This unit can be put in order only after completely removing the axle shaft with constant velocity joints. All components must first be disabled. Then other elements of this mechanism are released. Then you can begin to rotate the bridge when removing the axle shaft.

Replacing the internal element occurs as follows:

• the anther clamps are removed;
• move so as not to interfere with the work of nearby parts;
• strike the “grenade” with a hammer until it is completely removed.

A faulty part cannot be repaired. Next step:

• the splines must be thoroughly cleaned;
• install a new retaining ring - the replacement is complete, since the part is disposable and cannot be repaired;
• a new hinge is installed.

Finally, a new element is installed on the axis. To ensure the quality of the repair is high and no breakdowns occur, it is recommended to fill the protective case with lubricant. Then clamp the boot with a clamp. After this, you can turn on the unit and start using it while the machine is moving.

Varieties

SR as a suspension part began to be used on cars from the mid-20th century. Thanks to the unit, it became possible to simultaneously rotate and control the rotation of the wheels at an angle of up to 70 degrees. In the automotive industry, four technical solutions for components are used:

• cam;
• tripoid;
• ball;
• twin cardan shafts.

All these types are united by the basic design, which is a rigidly connected body and holder. The car's joints are also divided into:

• internal, rotating up to 20 degrees;
• external, more mobile and transmitting without power losses.

The part works according to the following principle.

1. There are grooves on the surface of the inner race. Their number is the same as the number of bearings inside it.
2. The cage is held in place by bearings that separate the housing and the cam.
3. The bearings move along the path of the smaller diameter of the fist and the larger diameter of the housing.
4. This creates a rotational impulse that transmits torque to the driven shaft.

If you change the angles connecting the axle shafts, the bearings begin to move inside the grooves. This is how torque is transmitted.

Caring for front wheel joints

It just so happens that most motorists pay attention to some part of the car after it breaks down. A new CV joint is purchased and replaced, which takes time and considerable money.

In fact, there is no drift to the angular velocity hinges installed in the Niva.

Unlike front-wheel drive VAZ 2110-2114 cars, in the Niva the torque is distributed over 4 wheels. This means that the load on the front wheel drive is half as much as in the same VAZ 2114. And if we theoretically assume that not a drop of abrasive dust and dirt gets inside the hinge mechanisms of the axle shafts, then the service life of the CV joint will be equal to the “life” of the CV joint itself. auto. Of course, this is impossible in real life, and the Niva is designed for off-road driving.

It is quite possible to prolong the life of grenades as much as possible. To do this, you must regularly perform the following activities:

1. Conduct a visual inspection of the anthers covering the hinges. When the car is operated on an asphalt road, an inspection should be carried out every 10-15 thousand km. When driving off-road or on embankment and dirt roads, the grenade cases need to be inspected more often, especially after driving in difficult conditions.
2. If the slightest damage to the boot is detected, immediately replace it with a new one. This also applies to the clamps that hold the covers in place.
3. During replacement, remove old grease from the Niva CV joint along with any dirt that has fallen into it and apply new one. The lubricant used is CV joint-4, its quantity for the outer grenade is 40 cm3, for the inner grenade - 80 cm3.

If you pay attention to these elements, they will easily last 150-200 thousand km

Otherwise, malfunctions may appear within the first hundred thousand km.

Replacement procedure: step-by-step algorithm

There is no point in repairing a worn-out unit, so the outer CV joint of a Niva Chevrolet is always replaced. Replacing a damaged “grenade” is a labor-intensive operation. You will need a set of wrenches, pullers, and experience in performing plumbing work.

Outer CV joint

The damaged unit is replaced using an axle shaft with grenades removed from the vehicle. The body is raised with a car jack, a reliable stand under the car and wheel chocks are installed. This helps protect the repairman from possible injuries. Before lifting the car body, loosen the hub nut. You will need a head and an extension for the key. Next, you need to remove the wheel and unscrew the lower mount of the front shock absorber. Take it to the side and secure it with improvised means. Also unscrew the bolts on the ball joint.

Then they completely remove the nut on the hub and, pulling it towards themselves, take out the “grenade”.

Release the boot mounting clamp and move it as far as possible on the axle shaft. A hammer with an extension is used to hit the body of the “grenade” until it is removed from the axle shaft. Before installing a new part, be sure to change the retaining ring on the axle shaft, since it is disposable. Installing the hinge is done in the reverse order.

Inner CV joint

This faulty unit on a Chevrolet Niva can only be replaced after the axle shaft with constant velocity joints has been completely removed. The “ear” and skis are released, which will allow you to rotate the bridge when removing the axle shaft. For ease of operation, the dismantled axle shaft with “grenades” should be clamped in a vice. Replacing the internal CV joint of a Niva Chevrolet occurs as follows:

1. Remove the clamps securing the protective boots and move them as far as possible.
2. Use a hammer and extension to remove the damaged “grenade”. A few blows are enough to dismantle the faulty part.
3. Before installing a new hinge, carefully clean the splines and install a new retaining ring, since it is disposable.
4. A new CV joint is installed on the axle, the protective cover is additionally filled with lubricant, and the boot is clamped with a clamp.

The axle shaft with new grenades is assembled and mounted in the reverse order. The process is fully presented in the video:

It will be possible to extend the service life of constant velocity joints if you monitor the condition of the protective covers on the grenades, avoid bad roads and use only high-quality spare parts.

Replacing the internal grenade

Niva Chevrolet

Replacement

inner CV joint
Niva Chevrolet
requires the necessary tools, as well as a lift, or a pit with a jack and trestles.

Necessary tool

1. Set of keys, sizes 13, 17 and 27.
2. Wheel nut wrench.
3. Jack.

Let's start work.

Before starting work, be sure to install the Niva on the handbrake and insert wheel chocks under the rear wheels.

1. Loosen the wheel nuts, place the car on a jack and remove the wheel.

2. Place a secure support under the lower arm. Lower the jack and the lever will compress.

3. Remove the three bolts securing the lower ball joint and unscrew the nuts.

4. Knock the chrome hub cap through a wooden block and unscrew the nut. Make sure that the hub does not rotate; to do this, you can install some kind of stop under the wheel stud. A hammer is ideal.

5. Remove the cone washer.

6. Grasp the bottom of the brake disc and pull it towards you, then move it to the side. At the same time, the grenade axis should be removed.

The Niva CV joint has been released. You need to place it on the bottom cup in any place convenient for you.

Replacement of the front left outer and inner CV joint at the Niva

Help the project. Replacement

at the front left CV

external and
internal
.

Replacing the inner right and left CV joints Niva 2121 part-1

Video on the topic Do It Yourself CV16013 Grenade ( CV joint

Next, your task is to turn the CV joint and find a comfortable position in order to grab the clamp tabs with pliers. Having grabbed the clamp, you should squeeze it well, bend the hook and dismantle it. Leave marks on the car shaft, as well as on the grenade body. This is done so that later, when you put the part back in place, you assemble everything exactly as it was before the repair. When the boot is released, move it away from the grenade.

Now you need to get the wire type retaining ring on the CV joint housing. You can feel it with your finger and, using a screwdriver, pry it off at the break in the ring and remove it.