Front Rack Support Bearing: Dimensions, Signs of Malfunction, Replacement

Shock absorbers are attached to the car body through the upper supports, the design of which includes special bearings. Their role is the uniform distribution of shock loads transmitted from the front wheels.

About what is a reference bearing front rack, we will talk in this article. We will look at its design, signs of malfunction and replacement process on the example of the car of domestic production VAZ-2110.

Design features

Front rack reference bearing is not intended for rotation. The basis of its design is a rubber separator and a set of steel balls. Due to the fact that the separator has the ability to bend in different directions, and loads are quenched. And the balls help to distribute them as evenly as possible.

The top support bearing has several varieties:

• with an integrated outer (inner) ring;
• with a separated outer ring;
• with a separated inner ring;
• single-separated.

Where it is located

Front rack reference bearing is placed in the top support housing. You can see her by lifting your car's hood. Pay attention to the so-called glasses located above the wheeled arches. From above, they are usually covered with protective caps. If you remove one of these caps, you will see the top support of the rack under it. To the glass she is fastened with three bolts. Nut, located in the center of the support, connects it with a rack.

Life time

The radiation resource for VAZ-2110 is 80-100 thousand km of run. At least so says the manufacturer.

What makes a malfunction of support bearings

Any malfunction in the front suspension of the car can cause a reduction in manageability, problems with stabilization during movement, as well as body deformities.

The faulty reference bearing of the front rack most often provokes the damage to the "glass" to which the shock absorber is attached. Because of this, the body geometry is disturbed, problems with control appear, the rack itself is destroyed.

Diagnosis of malfunction

How to warn possible consequences? For this, you just need to know signs of a fault of the front rack support bearing. These include a knock (crunch) in the area of \u200b\u200bthe upper attachment of the shock absorber when driving on an uneven road, as well as reduced management efficiency.

In order to make sure the fruitful fault, it needs to be checked. This is done as follows:

1. Raise the hood of the machine, remove the cover from the diagnosed "glass".
2. Apply the palm to the top of the "glass" at the fastening of the rack to the support.
3. Another hand shake the car body in vertical and horizontal directions.

If the reference bearing of the front rack of the VAZ is faulty, it will declare this appearance of a characteristic knock and vibration. Last minute you feel the palm.

What can happen to the bearing

The bearing of the front support can fail for reasons:

• resource consumed;
• impact on working elements of dirt, dust, moisture, technical fluids;
• exceeding permissible loads;
• faults of the depreciation rack or other parts of the suspension.

The most common relief faults are the ruin of the rubber separator and the damage to the internal or outer ring.

How much will the repair cost

To restore the suspension VAZ-2110 will have to be replaced either with a support assembly, which will cost 600-700 rubles, or only the reference bearing of the front rack. The price of this detail "dozens" is about 350 rubles. It is advisable to replace on both racks. At least, so it will be easier for you to take into account the resource.

Model and dimensions of the support bearing of the front rack VAZ-2110

Fulling defensions for "dozens" are produced under the catalog number 348702. By the way, they are also suitable for VAZ-2108, 2109, 2111, 2112. This is a ball-resistant single bearing with two internal rings. We produce such details on the Vologda, Samara and Minsk bearing factories. Russian products are manufactured according to GOST 520-2002.

Specifications of the support bearing 348702 are as follows:

• diameter Outer, mm - 52;
• diameter internal, mm - 14.5;
• width, mm - 14;
• mass, kg - 0.05;
• bulb diameter, mm - 5,556;
• load capacity Static / Dynamic, KN - 25.4 / 12;
• rated rotational speed, rpm. - 15 thousand

Replacing the bearing bearing front rack VAZ-2110

To replace the desperter on the "dozen" to go for a hundred optionally. This can be done without any problems. For this, the following tools will be required:

• balloon key and jack;
• keys at 9, 17, 19 (horns), 13 (end), 22 (cape);
• passatia;
• puller for steering tips;
• two screeds for springs shock absorbers.

Replacing the reference bearing is as follows:

1. Install the car on a flat site, fix it.
2. We turn the front wheel fixing bolts from the right side. We raise the body of the jack, dismantle the wheel, remove it to the side.
3. Passages pull out the vellenge nut of the steering tip, we unscrew this nut key to 19.
4. If you have a puller for the tips of the steering, remove the finger from the rack with it. If the puller is not, the finger can be pressed using a small flat mount using it as a lever.
5. Using the horn key to 19, we unscrew the two nuts of the bolts, which are fixed with a rack to a swivel fist. If the bolts scroll, hold their caps on the back of the key to 17.
6. Go to the engine compartment. On the glass we unscrew 3 nuts that attach support to the body to 13.
7. We dismantle the depreciation rack.
8. Using keys to 9 and 22, we unscrew the screw fastening nut to the upper support.
9. We dismantle the upper support and disassemble it. Remove the faulty flavor, install the new one in its place. We collect support.
10. If you decide to replace the entire support block, you do not need to disassemble anything. Just remove the old support from the rack, and screw the new one in its place.
11. Build the assembly in the reverse order.
12. Similarly, we replace the desire (support assembly) on another rack.

How to extend the life of the support bearings

In order for the support bearings to serve as longer as possible:

• if possible, avoid movements on uneven coating, and if this can not be done, move at a minimum speed;
• do not slow down directly on pins (pits), bumps;
• do not allow the housings of the dirt, dust, technical fluids, check the state of the fixtures of the protective caps on the glasses;
• at least once every three months, inspection of the state of the supports and the diagnosis of bearings in the manner described above;
• by purchasing replacement replacement, give preference to brand items.