Front A-pillar bearing: description, specifications and replacement

The car consists of many parts and assemblies. On modern cars with front-wheel drive a lever suspension type McPherson is used. It includes levers, as well as an amortization rack. It comes complete with a spring and rotates with the wheel. In order for the rack to move normally, the design uses a support pillar bearing. VAZ-2110 is also equipped with them. What is this element? Let's consider.

Characteristic

The bearing support of the front post iscomponent of the front shock absorber, which is responsible for the rotation of the column around the axis. The mechanism is used in many domestic cars with front-wheel layout.

The bearing support of the A-pillar is located in thethe upper part of the body. The element is attached to the engine mudguard. In modern racks such as McPherson used rolling bearings. They have high performance characteristics, are versatile and easy to replace. The work of this bearing directly affects the accuracy of the installation of the corners of the wheels. Therefore, it is so important to keep it in good order.

Varieties

The bearing support of the front pillar is insiderollers of cylindrical type. Each of them is attached perpendicular to the previous one. The rollers are separated by a special separator. This device allows you to perceive large shock loads. At the moment, several types of such mechanisms are used:

• The bearing support of the front pillar with the outerinner ring. Its design does not provide for the presence of pressure flanges. Instead, there are mounting holes. Also, the design of the bearing with an inner ring includes protective gaskets.
• With detachable ring. In this bearing, the outer ring is connected to the body, and the inner ring is separated from it. This design contributes to high accuracy of rotation.
• Single-separated type. In this case, the outer ring is divided at a single point. This increases the rigidity of the bearing and has a beneficial effect on its life.

About faults

The bearing support of the front pillar is the partwhich is entrusted with enormous shock loads. All unevennesses that the shock absorber did not have time to work out are transferred to this mechanism. As a result, it begins to collapse.

Yes, the front pillar bearinga certain margin of safety. However, with constant operation on uneven roads, it becomes unusable. So, its resource is about one hundred thousand kilometers.

What affects the resource?

Note that the pillar bearing is nothas good protective devices. He is constantly exposed to external factors. It's dust, water, dirt, temperature changes and stuff. And as you know, the rack is in the dirtiest place - in the wing, at the front wheels. Even plastic lockers do not save. As the rollers become contaminated, the characteristic bearing of the front pillar begins to emit a characteristic crunch. "Kalina" is a foreign car, it does not matter - the part will be subject to replacement. And the sooner you do it, the better. The correctness of this mechanism affects the correctness of the angles of rotation of the wheels and the safety of movement. By the way, at first it is very difficult to determine this crunch. But over time it will intensify. If the symptoms are confirmed, do not hesitate to replace it. By the way, the photo below shows the spring remover. Thanks to him, you can pull the turns for a couple of centimeters, releasing access to the element.

Also, carefully examine the conditionrubber-metal support pads. It also wears out. If the part has cracks or oil marks, the soft part of the element needs to be replaced. Otherwise, this will cause a malfunction in the ABS system and unnecessary vibration on the corners, which will be clearly transferred to the steering wheel. Also the bearing support of the front pillar (2110thVAZ including) affects the accuracy of setting the angles of camber-toe. With its malfunctions, you will have to "eat up" the rubber. It is already impossible to restore such a tire - just change it. When replacing the bearing, it is required to re-align the camber and the convergence of the front wheels. But there is a way in which it is not necessary to expose the corners (we will tell about it in the course of the article).

Price

How much is the new front bearingracks? The price of this element is about one thousand rubles for "Priora" cars and one and a half thousand for "Ford Focus" of the third generation. For previous versions, this element costs up to a thousand. We should note that there are no difficulties with the search for spare parts either for foreign cars or for Russian VAZs. The item can be bought at any car store or on the market. Below we will look at how to change this element yourself.

Replacement of bearing supports of front racks by own hands

First we need to open the hood and find a cupfront rack. It should be unscrewed with a double head "for 22". If you have a "spacer" installed, it must also be removed. Why double head? When the bolt is rotated, the shock absorber rod will also scroll. It must be securely fixed. On some cars, this can be done with a hexagonal key (installed in the connector, as in the photo below).

The inner head is gripped by an ordinary"Cape". Next, we jack up the front part, remove the wheel and go to the bottom of the rack. We are looking at the place of fastening the rotary cam. For the convenience of dismantling we process it with universal grease VD-40. Also we spray the composition on the bolt of the steering rod.
Unscrew the ball head. Then gently knock it out with a hammer. It is important not to damage the element - use a wooden board as a damper. Now about the secret method. To ensure that after the replacement is not repeated break-down, we disassemble the mechanism without disconnecting the rack from the cam. After dismantling the fasteners, pull the knot toward you. Disconnect the brake nipple. Do not forget about security measures. Since the upper part of the drain is still in place, put a hard stop down (for example, a wheel). Now go to the dismantling of the top of the element. Unscrew the three fasteners and pull the stand out. It is better to do this from the top to the bottom.

Installation

To remove the old one and install a new bearing, use a special spring-type vice.

Squeezing the turns to the desired level, unscrew the lock nut of the rod. Take care that the latter does not turn. It is better to fix it with a hexagon or a spanner key. After that, lift the lid and change the bearing. The important point - look at the condition of the rubber gaskets. If the vibration isolators are worn out, also replace them with new ones. This completes the process of replacement. Assemble the element in the reverse order. Note that the spring vise is removed only after the top and bottom of the rack are fully installed. After 50 kilometers, re-pull the fasteners.

Conclusion

So, we found out what a bearing isfront rack and how to replace the element with your own hands. When operating a car, watch not only its mileage, but also listen carefully to the operation of the mechanisms. If they start crunching, knocking or clicking, inspect them visually and replace the damaged parts. We hope that this instruction will help you to replace the bearing of the front pillar yourself.

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