Front A-pillar bearing: description, specifications and replacement

The car consists of many parts and assemblies.On modern cars with front-wheel drive, MacPherson type lever suspension is used. It includes levers, and also a depreciation rack. It is assembled with a spring and rotates with the wheel. In order for the rack to move normally, a support bearing for the front rack is used in the design. VAZ-2110 is also equipped with them. What is this item? Let's consider.

Characteristic

Опорный подшипник передней стойки являет собой part of the front shock absorber, which is responsible for the rotation of the rack around the axis. The mechanism is used in many domestic cars with front-wheel drive layout.

The front strut bearing is located intop of the body. The element is attached to the engine mudguard. In modern racks such as MacPherson bearings are used. They have high performance, versatile and easy to replace. The operation of this bearing directly affects the accuracy of the installation angle of the wheels. Therefore, it is important to keep it in good condition.

Varieties

Опорный подшипник передней стойки имеет внутри cylindrical rollers. Each of them is mounted perpendicular to the previous one. The rollers are separated by a special separator. Such a device allows you to perceive large shock loads. Currently, several types of such mechanisms are used:

• Опорный подшипник передней стойки с наружным либо inner ring. Its design does not provide for clamping flanges. Instead, there are mounting holes. Also the bearing design with an inner ring includes protective pads.
• With detachable ring. In such a bearing, the outer ring is connected to the housing, and the inner ring is separated from it. Such design promotes high precision of rotation.
• Single split type. In this case, the outer ring is divided into a single point. This increases the rigidity of the bearing and has a beneficial effect on its life.

About faults

The thrust bearing of the front pillar is that part onwhich laid enormous shock loads. All irregularities that the shock absorber did not have time to “work out” are transmitted to this mechanism. As a result, it begins to collapse.

Yes, the front strut bearing hasa certain margin of safety. However, with constant use on uneven roads, it becomes unusable. So, its resource is about one hundred thousand kilometers.

What affects the resource?

Note that the front strut bearing is nothas good safety features. It is subject to constant exposure to external factors. This dust, water, dirt, temperature extremes, and more. And as you know, the rack is in the dirtiest place - in the wing, at the front wheels. Do not save even plastic lockers. As the rollers become dirty, the thrust bearing of the A-pillar begins to emit a characteristic crunch. "Kalina" is or a foreign car, it does not matter - the part will be subject to replacement. And the sooner you do this, the better. The serviceability of this mechanism affects the correctness of the angles of rotation of the wheels and the safety of movement. By the way, at first this crunch is very difficult to determine. But over time, it will increase. If the symptoms of a malfunction are confirmed, it is not necessary to spend time with the replacement. By the way, the photo below shows the spring remover. Thanks to him, you can delay coils a couple of centimeters, freeing access to the element.

Also carefully inspect the conditionrubber metal gasket support. She also wears out. If the part has cracks or traces of oil, the soft part of the element needs to be replaced. Otherwise, it will cause interruptions in the work of the ABS system and excessive vibration at the corners, which will be clearly transmitted to the steering wheel. Also support bearing front strut (2110 thVAZ including) affects the accuracy of the installation of the camber and toe angles. With its faults, you will "eat up" rubber. It is already impossible to restore such a tire - just change it. When replacing the bearing is required to re-exhibit the camber and toe of the front wheels. But there is a way in which it is not necessary to set angles (we will tell about it in the course of the article).

Price

Сколько стоит новый опорный подшипник передней stand? The price of this item is about a thousand rubles for the cars "Priora" and a half thousand for the "Ford Focus" of the third generation. For previous versions, this item costs up to a thousand. Note that there are no difficulties in finding parts for foreign cars or for Russian VAZ vehicles. The item can be purchased at any automotive store or on the market. Below we will look at how to change this element yourself.

Replacing the support bearings of the front pillars with their own hands

First we need to open the hood and find a cupfront strut. It should be unscrewed with a double head "on 22". If you have a “strut” installed, it must also be removed. Why precisely double head? When the bolt is rotated, the damper rod will also scroll. It must be securely fixed. On some cars this can be done with an allen key (installed in the connector, as in the photo below).

The inner head is captured by an ordinary"Cape". Next jacking front, remove the wheel and go to the bottom of the rack. We look at the place of attachment of the swivel cam. For ease of dismantling, we treat it with universal grease VD-40. Also splash the composition on the tie rod bolt.
Turn off the tip ball.Next, gently knock it with a hammer. It is important not to damage the element - use a wooden board as a damper. Now about the secret method. That after replacement not to make repeatedly alignment, we disassemble the mechanism without disconnecting a rack from a cam. After dismantling the fasteners, we pull the knot over. Disconnect the brake fitting. Do not forget about security measures. Since the upper part of the drain is still in place, we put down a hard stop (for example, a wheel). Now proceed to disassemble the top of the item. Turn off the three fasteners and remove the rack out. Better to do it from the top down.

Installation

To remove the old and install a new bearing, use a special spring vise.

Squeezing the coils to the desired level, unscrew the locknut stem. Make sure that the latter does not rotate. It is better to fix it with a hexagon or a cap wrench. After that, lift the cover and change the bearing.An important point - inspect the condition of the rubber pads. If vibration absorbers are worn out, also replace them with new ones. At this replacement process can be considered complete. The assembly of the element is performed in reverse order. Please note that the spring vise is removed only after full installation of the top and bottom of the rack. After 50 kilometers, re-pull the mounts.

Conclusion

So, we found out what a thrust bearing is.front rack and how to replace the item with your own hands. When operating the car, watch not only for its mileage, but also carefully listen to the mechanisms. If they begin to crunch, knock or play, inspect them visually and replace damaged items. We hope this manual will help you replace the front axle support bearing yourself.