Set of steering knuckles with reinforced hubs 24 splines for Niva and Niva Chevrolet cars with ABS. These knuckles are also installed on a car without ABS.
This unit is mounted in the front suspension instead of the standard unit without any modifications and has a number of advantages due to the use of a double-row non-adjustable bearing.
Advantages: — improved vehicle acceleration; — improving vehicle handling; — reduction of fuel consumption; — no need to adjust clearances or replace grease in bearings; — improving the efficiency and information content of the brakes.
When ordering, take into account the number of splines on the front hub (22 or 24): All Chevrolet Niva - 24 splines, VAZ 21213, 21214 from the fourth quarter of 2003 - 24 splines, (VAZ Information Letter No. 25-2004-I) VAZ 2131 - Starting from September 2009 - 24 splines (all VAZ 2131 cars are unified in the front suspension with the VAZ 21214M) VAZ 21213, 21214 until the fourth quarter of 2003 - 22 splines, VAZ 2121 - 22 splines.
The diameter of the CV joint shaft is 24 splines - 26.47 mm, and 22 splines - 24.33 mm (Drawing)
ABOUT BALL JOINTS! Since 2013, AvtoVAZ has stopped producing steering knuckles model 2121 and equips all cars of the Niva and Chevrolet Niva family with knuckles model 2123.
Therefore, for Niva cars of earlier years of production, where old-style camshafts may be installed, the lower ball joint will need to be replaced with a support from a Chevrolet Niva car. When installed on VAZ 21214, 2131 from 2004 to 2009. must be equipped with two lower ball joints of the VAZ 2123. This is necessary to maintain the ability to adjust the angles of the front wheels
Together with these knuckles, we recommend installing front ventilated brakes with upgraded calipers using GAZ 3110-3302 brake pads.
If you purchase a Reinforced Hub Unit and Ventilated Brakes at the same time, you will receive a guaranteed discount!
There are effective rear disc brakes available for Niva and Chevrolet Niva.
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The hub ensures free rotation of the wheel and its reliable attachment to the car suspension. It acts as a supporting structure and allows you not to change the entire hub assembly as a whole, but to separately repair parts (bearing, drum, disc).
The hub plays a key role in the operation of the drive, brakes and steering and is subject to severe stress while driving. Therefore, the comfort and safety of driving depend on the strength and condition of this unit.
Which ones are better to choose for Chevy Niva?
Front-wheel drive parts for Shnivy are produced by dozens of companies. Products differ in prices, quality, permissible loads and service life. The standard configuration of the SUV includes adjustable hub units, the tightening torque of which must be controlled after 2-3 thousand kilometers. For those who value reliability and are not ready for regular maintenance, manufacturers have introduced non-adjustable (maintenance-free) wheel hubs. They differ in the following indicators:
- The possibility of wear of the bearing seat in the steering knuckle is eliminated.
- The unit does not require lubrication or adjustment during its entire service life.
- The non-removable design of the bearings prevents them from turning.
- Increased service life of the unit.
- Reduced friction due to the use of ball bearings.
The non-adjustable hub has a reinforced cross-section, which prevents its deformation under the influence of shock loads. This is very important when regularly driving off-road or on broken asphalt roads.
Parts with catalog numbers 2123-3103014 and 21230-3103014 are produced by the following companies: IVECO, SKF, Leader, GM-Avtovaz, VolgaAvtoProm and other companies. The cost of the part depends on the manufacturer and design (adjustable and non-adjustable). The price of the products is 1000-6000 rubles. You can also find more expensive units that include brake discs.
How to replace the outer CV joint on a Chevrolet Niva
Replacing the outer CV joint on a Chevrolet Niva is an important undertaking, because if the breakdown is not repaired in time, the consequences can be very sad; the wire may simply jam while driving. One of the first symptoms of this problem is a slight cracking sound when the steering wheel is in the turned position at the beginning of the journey.
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.
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.
Work on replacing the outer CV joint
To carry out the procedure, you must first remove the old grenade, which is removed along with the axle shaft. To do this, you need to raise the body using a jack and install a strong stand under the car to avoid health problems. Before raising the Niva body, it is best to lower the hub nut; for this, a head is used, as well as an extension for the key. After this, the wheel is removed and the lower wheel of the front shock absorber is unscrewed, the nut on the hub is removed, and the grenade is thus pulled out.
After this, replacing the CV joint on a Chevrolet Niva is carried out according to the following steps:
- It is necessary to clamp the assembly that you removed in a vice.
- Removing the damaged boot.
- Knocking down the outer CV joint using a hammer.
- All teeth on the axle gear should be thoroughly cleaned.
- A new hinge is being installed.
- The boot is inserted, which should be clamped using clamps.
- All parts are mounted in place.
To carry out independent repairs, use two heads, an extension, a hammer, a jack, a wheel wrench, a wrench, a ratchet, and a flat-head screwdriver.
Often, Chevrolet Niva owners carry out procedures to increase engine power, after which the load on the CV joint increases, and it wears out many times faster, so professionals recommend strengthening the shaft.
Why can the CV joint on a Chevrolet Niva deteriorate?
Such parts tend to wear out, like all others, so they need to be replaced over time. Among the main reasons for which the CV joint will need to be replaced are the following:
- long service life of the outer CV joint - most often the part has to be replaced after 10 thousand kilometers;
- entry of dust or dirt when the rubber boot wears out (therefore you need to check the condition of the protective part).
In addition, a large load is placed on the Chevrolet Niva grenade when the steering wheel is turned at strong turns, and driving occurs on poor road surfaces.
Having become familiar with all the features of the hinges, an experienced driver will be able to correctly replace the outer CV joint for a Chevrolet Niva on his own.
Video about Iveco non-adjustable hubs
Every owner dreams of trouble-free and long-term operation of their car. At the same time, there are some routine works that are not usually called repairs. Often such work is called replacing consumables. A failed Chevrolet Niva hub is considered by many craftsmen as a “consumable”, as this happens quite often.
Not every car service center can boast of a conscientious attitude towards its client. There are cases when a master deliberately provokes a visitor to carry out expensive repairs, although the cause of the malfunction does not require it.
There is no point in fighting such organizations, but everyone needs to be prepared for a trip to the service. If you decide to carry out repairs yourself, then you should clearly understand what this or that unit consists of, and also know how to install/dismantle it.
How many splines are on the Chevrolet Niva hub?
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If it is difficult for you to choose one of the delivery options presented , our manager, when clarifying your order, will help you choose the ideal option for you, in addition, he will calculate the estimated delivery time and the final cost.
The main purpose of the wheel hub
The main task of the transmission is to transmit torque from the engine to the wheels. A shaft system is used for this. But if the wheel is connected directly to the drive shaft, then it will be structurally impossible to assemble a load-resistant platform.
Difficulties also arise when designing front-wheel drive or all-wheel drive vehicles. The front wheel must have two degrees of freedom, that is, it rotates and turns at the same time. The rear wheels should also rotate easily, giving the vehicle a smooth ride. The intermediate link between the drive shaft and the wheel is the hub.
The hub is made of durable metal and serves to transmit torque from the shaft to the wheel. To ensure rotation of the hub, rolling bearings are used. It has not yet been precisely established whether the hub belongs to a suspension or transmission part.
On the one hand, it ensures wheel rotation and vehicle braking. On the other hand, it participates in the transfer of torque.
Design and operating principle
To drive the front wheels, two drive shafts (half shafts) are used, on which four CV joints are installed (2 internal and 2 external).
Structurally, they consist of the following parts:
- two cages (external and internal) in which grooves are made;
- bearing balls;
- separator.
The design is enclosed in a rubber corrugated boot, which prevents lubricant leakage and dirt from entering the bearing assembly.
The balls transmit torque between the cages and, moving along the grooves, ensure the operation of the unit when the angle between the axes of rotation changes.
For internal hinges, the bending angle can reach 30 degrees, and for external hinges, 60 degrees.
Note! In addition to driving the front wheels, CV joint gears are used in the intermediate and driveshafts of the Chevrolet Niva.
Chevrolet Niva hub
If we consider only one hub of a Chevrolet Niva, it consists of a flange assembled into a single unit for attaching a wheel rim and a guide on which the wheel bearing sits.
But some other functions are superimposed on the wheel hub:
- It connects the wheel to the shaft through bearings, allowing the wheel to rotate;
- The hub is pressed into the steering knuckle, thereby ensuring rotation of the wheel relative to the vertical axis;
- The brake disc is mounted on it, and the brake mechanism is mounted on the steering knuckle.
Since the assembly with the steering knuckle assembly is of practical importance, that is why they are called the hub.
In fact, this node includes the following elements:
- Rounded fist;
- Hub;
- Brake disk;
- Wheel bearing.
Chevrolet Niva hub malfunctions
Most wheel hub repairs involve replacing the wheel bearing. Less often, the hub itself fails, since the material from which it is made is quite durable. The reason for replacing the wheel bearing is simple wear. It is necessary to understand that there is a huge load on it, because the distributed load from the car itself exerts pressure from above. When driving over uneven surfaces, this load increases. If we also take into account the mobility of the bearing parts, the reason for the wear that appears on the inner and outer race will become clear. A failed wheel bearing begins to emit extraneous noise, which intensifies over time.
Since the condition of the hub directly affects traffic safety, at the first suspicion, the bearing must be replaced.
There are two simple ways to diagnose a bad wheel bearing. The first is that on an empty highway you need to drive along a large radius curve, first in one direction and then in the other. In simple words, when driving, you first need to turn the steering wheel slightly to the right, and then to the left. Typically, bearing noise will increase in one case and then decrease. If the noise increases when you turn the steering wheel to the right, then the reason is in the left bearing and vice versa.
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:
- 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.
- 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).
Hub replacement
For any type of repair work related to the hub, it must be dismantled. This work may include replacing bearings, the hub itself or the brake disc. For all of the listed types there is a general algorithm for dismantling the hub.
- The wheel nuts are unscrewed. The wheel hangs out.
- Unscrew the hub nut with a 30mm wrench.
- The caliper is dismantled. To do this, use a 17mm wrench to unscrew the two bolts on the rear side of the steering knuckle.
- The steering end nut is unscrewed.
- Using a puller, the tip is removed along with the rod.
- Using a 22mm wrench, unscrew the nut of the upper ball joint, then the lower one. You can tighten the ball joint itself without removing it from the steering knuckle.
- The steering knuckle assembly is dismantled. The drive will easily come out of the hub since the hub nut is unscrewed.
- In order to press the hub out of the inner race of the bearing, you will need a suitable frame. The bearing itself remains in the steering knuckle. It is also knocked out with a frame.
Replacing Niva with VAZ 2121 Trunk
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With the car lightly connected, the hood is removed which covers the hub, the wheel frame is completely unscrewed and the wheel nuts are loosened.
The wheel is hung and removed.
The lower arm is carefully lowered onto the solid block.
The nuts holding the ball layer (3 pieces) are removed
Shaft outer joint Carefully remove the steering wheel by pulling it back and up
The handle is attached with wire to the corresponding projection. The lower damper mount is released from the lever, after which it is necessary to raise the jack a few centimeters up.
Using pliers and screwdrivers, you must remove the CV loading clamps of the CV connection, as well as the sawmill
. The retaining ring, located inside the grenade shell, is then removed from the structure outside the vehicle.
Possible improvements
The Chevrolet Niva hub does not require any maintenance work during operation. In this case, the car owner is obliged to constantly monitor the condition of the wheel bearings. By replacing them, improvements are possible. First of all, this is the installation of non-adjustable, reinforced bearings. Instead of two single-row ones, one double-row bearing is installed, and the landing part of the steering knuckle is bored. The landing part of the hub is also bored. Today you can already buy a non-adjustable hub along with a steering knuckle. You just need to pay attention to the number of splines for the drive. Such bearings are more reliable. In addition, there is no need for constant adjustment.
Grenade replacement
This unit consists of parts that are constantly in motion. As a result, they may burst or wear out, requiring replacement.
The device can only be repaired if the owner of the car has identified damage to the boot in time, and therefore foreign substances have not yet managed to get inside the mechanism.
But this happens quite rarely, since it is almost impossible to detect damage to the boot in time. It should also be said that the cost of the CV joint is not high, and therefore it can be purchased if necessary.
Troubleshooting
You can determine the malfunction of the grenade yourself. To do this, while the car is moving, turn the steering wheel in any direction until it stops. In this case, the driver will hear a crunching sound in the area of the front wheel. In this case, you need to replace the hinge.
During the repair process, it is important to determine whether it is necessary to change both hinges or one, because such work is recommended to be carried out only in a comprehensive manner
Video on how to determine if a grenade is faulty
Changing a grenade on a Niva Chevrolet with your own hands
To replace a grenade, you must first remove the old one. In the process, you will have to dismantle the axle shaft along with the CV joint (you can find a disassembly video on the Internet). Then the car owner must perform the following actions:
- Clamp the removed assembly in a vice.
- Remove the old boot.
- Knock the CV joint off the axle using a hammer and a socket.
- Clean all teeth on the axle gear.
- Install the new joint on the axle.
- Place the boot and secure it with clamps.
- Install the axle with CV joint on the car.
