The ball joint is one of the most important components of the front suspension of front-wheel drive cars, including the Lada Kalina. The main purpose of the ball joint is to be the connecting link between the steering wheel hub and the suspension arms. That is, during vertical movement, the hub rotates, but the horizontal position of the wheel remains unchanged. The condition of the ball joint should be carefully monitored. Otherwise, there is a high probability of serious consequences, especially if the breakdown occurs while driving. If the ball joint fails, the wheel will turn outward and the car is guaranteed to fall onto the wing. If you imagine such a situation at high speed, there is a high probability that its development will lead to a serious accident.
Characteristics of the ball joint on the Lada Kalina
This unit holds the wheel in a certain position, while at the same time allowing the hub to rotate and maintain horizontal stability. The ball joint is called because of the ball-shaped tip. Structurally, it is a cone-shaped unit.
The Lada Kalina uses a modern collapsible element, although the first VAZ models had stamped assemblies from several parts, and then cast structures. The ball joint installed on a Lada Kalina car, regardless of modification and generation, has a standard device that includes several main components:
- frame;
- a part in the form of a cone (another name is “finger”);
- rubber protective boot (prevents dirt and dust from entering).
The main elements are made of high quality steel. This is due to the fact that during operation the working parts are constantly exposed to load, friction and, as a result, high temperatures. The only exception is the hollow part of the body, which is covered with polymer materials. Plastic is mainly used for these purposes.
The main advantage of the Kalina ball joint is the extreme simplicity and efficiency of the design, which allows the contacting parts to move freely at equal angles.
Looking at the structure of the ball in more detail, it can be noted that it is actually a steel finger, which on one side ends with a tip in the form of a small ball. The tip rests on a plastic (or polyurethane) gasket. The bushing and ball end are located in the body and are rolled to prevent flyout. The body is additionally galvanized against corrosion. It is fixed to the upper or lower control arm and the threaded part is secured with a knuckle nut. Thanks to this, the fist is not fixed too tightly, which allows it to rotate along with the wheel hub, and the vertical position is maintained when the vehicle’s suspension is operating.
The ball joint is a fairly reliable and durable unit if you follow the operating rules. The long service life of the ball joint is possible thanks to the lubricant located in the part of the housing where it comes into contact with the working part. Insufficient lubrication, its leakage and moisture entering the internal cavity can cause premature failure of the entire assembly. To protect the working parts, a special boot made of rubber that is resistant to aggressive environments is used.
In order for the ball joint to last as long as possible, every car enthusiast should check the condition of the suspension from time to time, paying special attention to the rubber boots. There should be no cracks or other visible damage on their surface. If there are defects, it is recommended to check the condition of the entire assembly for wear.
Malfunctions
Despite the fact that the support parts of the Lada Kalina are made of durable steel, the unit, which experiences the most powerful loads, fails from time to time, because it is the suspension that experiences the vibrations that come from driving on a bad, bumpy road, and the suspension also absorbs a significant part of the weight of the machine, which leads to wear of parts.
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- Most often, the contacting surfaces in the supports wear out, which are in constant friction. Mechanical damage and overheating lead to deformation: the formation of a gap from the pin to the body, chips, cracks. For this reason, parts malfunction, rotate, even hang out in the body, and as a result, have the most negative impact on the operation of the suspension. And since the stability of the car depends on the suspension, we can say for sure: faults in the ball joints lead to loss of controllability, and, therefore, to an accident.
- In addition to deformation of the contacting surfaces, damage also occurs in the boot; rupture of the boot also has a bad effect on the operation of the entire system, because in this case, all the dirt, dust and water that falls on the suspension while driving gets inside, which causes corrosion processes and rapid wear. components.
- Lack of lubrication also leads to the formation of mechanical deformations. Therefore, you must always monitor the lubrication level in all systems, without losing sight of the suspension.
Diagnostics of ball joints and reasons for their failure
Like all budget front-wheel drive cars, the Lada Kalina is equipped with a MacPherson-type front suspension. Briefly, the design consists of an upper support in the form of a strut with a shock absorber and a spring, and a lower support in the form of a wishbone. This lever is connected to the wheel hub (via the steering knuckle) using a ball joint. The design is elementary and therefore reliable, but the presence of moving elements makes diagnostics a difficult task, requiring certain skills and knowledge.
Signs of a ball joint malfunction
The most common symptoms of problems with this unit include the following:
- when driving at low speed over uneven surfaces, a knock is heard from the front suspension;
- when turning the steering wheel, a slightly greater force is required;
- when turning the steering wheel, the front suspension begins to creak;
- Tires wear out differently;
- The car pulls to the side when driving in a straight line.
But it is impossible to diagnose only a ball joint based on these signs, since these same symptoms may indicate problems with the shock absorber strut, wheel bearing or suspension arms. There are a number of methods for independently identifying faults that are not very complicated.
Options
Performance
It should be taken into account that on non-original supports there are special diagnostic holes that allow you to determine how worn the tip is. In addition, you can find out about problems with the ball by looking at the condition of the protective boot. Even small cracks can cause grease to leak and dirt and dust to enter. As a result, this results in accelerated wear of the unit and a significant reduction in service life.
Selection of ball joints for Lada Kalina
Its front suspension is not much different from previous VAZ models, for example, Priora, Samara, etc. The chassis of different generations of Kalina itself does not stand out fundamentally. On the first generation and on Lada Kalina cars of 2 different modifications, ball joints with catalog number 21100-2904192-82 are installed, and for supports with a set of fasteners, catalog number 21100-2904192-86.
The modern auto parts market offers customers different types of supports. The first are original (welded from several parts), and the second are stamped and reinforced. Structurally, all these hinges are arranged identically. The only differences are in the manufacturing technology and quality of the steel used, as well as its thickness. This determines the strength of the products, their durability and, of course, cost. In terms of size and principle of operation, they are no different from each other. From this we can conclude that the question of choice is not fundamental and depends on the personal preferences of the car owner.
Experienced car enthusiasts, as well as auto mechanics, recommend using exclusively original components. Only by choosing the original, you can be guaranteed to obtain the declared quality, reliability and long service life. However, as practice shows, original spare parts are sometimes much more expensive than analogues, so most car enthusiasts prefer to use the second option.
When choosing analogues, you need to approach the issue carefully and responsibly. You should not choose very cheap spare parts from an unknown manufacturer, and you should also not take components from markets, unknown points, or simply from your hands. Before purchasing, you should carefully inspect the components. There should be no visible welds on them; the surface should be gray, which indicates heat treatment of the part.
The components must have an emblem and a quality mark. As a rule, fakes do not have this.
Indirectly, quality is indicated by holograms on the case or packaging of components, as well as an additional set of fasteners. The cost of a ball joint for Kalina usually does not exceed 500 rubles. It's inexpensive, but it's worth considering that purchasing units for tuning can be significantly more expensive. For example, those from Pasker are valued tens of times higher.
Replacing a ball joint on a Lada Kalina
The instructions for carrying out work on the first generation Lada Kalina and the “two” are no different. This does not depend on the modification, for example, sedan, station wagon or hatchback (cross). You can do everything yourself. To do this you will need the following set of tools:
- wrenches or socket heads 17 and 19;
- TORX E12 head;
- special puller for ball joints.
You may also need a torque wrench to ensure optimal tightening of nuts and bolts, a pry bar, and a hammer to knock out the pin. As for the TORX E12 key, it can become useful when working with a ball joint on Kalina 2, where this fastener is used for fastening to the steering knuckle, and not a 17 bolt, as on Kalina 1st generation.
Rules for removing the ball joint
Before starting work, you should raise the parking brake lever all the way and use the jack to hang the desired wheel. The further process is as follows.
- Using a socket or a 19 mm wrench, unscrew the fastening nut, thanks to which the ball end is mounted on the wishbone.
- Use a special puller to remove the conical pin from its seat in the body.
- Using a 17 wrench (on Kalina 2, a TORX wrench), unscrew the fastening bolts that secure the ball to the hub knuckle.
- Using a pry bar, lower the lever lower. This will give you access to remove the ball joint.
To make the task easier, you can pre-treat the bolts and nuts with VD 40 or any similar liquid. This is true in some cases, but usually there are no problems with unscrewing nuts and bolts. If there is no puller for ball joints, you can remove the pin in another way:
- loosen the nut and leave it on the tip;
- Use a mounting spatula to press the lever from top to bottom;
- Use a hammer to knock the pin out of the body, thereby pressing it out of the seat.
If desired, the ball can be visually inspected and tested for compliance. To do this, the assembly is clamped in a vice. And with movements in different directions, the axial and other play of the finger in the socket is checked. The play should not exceed 0.7 mm; if there are large deviations in this indicator, the unit should be replaced; the ball joint cannot be repaired. If it is in order, but the rubber boot is damaged, you can only get by by replacing it. To do this, the support is dismantled and the boot is removed from it; before installing the cover, it should be filled with a suitable lubricant and fixed to the support.
Replacement
You have decided that you will carry out the replacement work yourself. Well, that's right. Extra money saved is never a bad idea.
Today, the service for replacing ball joints costs an average of 2-3 thousand rubles.
Replacement consists of two stages:
- Dismantling old ball joints;
- Installation of new elements.
Dismantling stage
We will start, of course, with removal:
- Put the car on the handbrake, disconnect the negative terminal on the battery, place anti-roll bars under the wheels and lift the car using a jack on the problem wheel. You need to think about safety first if you are doing car repairs yourself;
- Loosen the wheel mounting bolts and then remove it;
- Remove the nut that holds the ball pin;
- Using a puller, press the support pin out of its seat. If you don't have a puller, use a pry bar and a hammer. The support is pryed up with a pry bar, several blows are applied with a hammer, as a result of which the problematic part comes out;
- Using any strong lever you can find in the garage, move the suspension arm down a little;
- Now the ball is easily removed from its place. This stage requires the presence of an assistant, since it is quite difficult to complete the entire range of dismantling work with two hands. To be more precise, it is inconvenient.
Internal lubrication
That's it, the old ball is dismantled, so you can start installation. We can say that the installation takes place in a clear reverse order. But there are some nuances here.
When choosing a support, inspect it carefully for defects. This is especially true for the boot, since the service life of the support as a whole depends on it. The average price of a ball is 300-500 rubles.
