Replacing the front wheel bearing on a VAZ 2109 (21099, 2108) with photos and videos

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Malfunction of the front hub of a VAZ 2109 car caused by faulty bearings can lead to quite dire consequences.

Without a properly functioning hub, the wheels stop rotating at the required speed. This leads to damage to the braking system, and then the entire car breaks down.

If any malfunctions are found, they should be corrected immediately.

Wheel bearing diagnostics, causes and signs of failure

Let us briefly list the signs of this breakdown:

• Noise when driving from the front (right or left), and when turning there is also a noise or howling.
• Vibration in the interior is a sign that repairs are required, as the lubricant may have dried out or a lot of dirt has entered.
• A grinding or crunching sound means that the front wheel bearing has already fallen apart.

Before jumping to conclusions, do a step-by-step diagnosis:

1. Jack up the side where there are characteristic signs, but before doing this, remove the wheel.
2. Rotate the disk by hand; if there is a “rolling” sound or other noise, a replacement is needed. When the product is in good working order, rotation is smooth, without jamming or noise.
3. Remove the brake disc, check the hub play by moving it by hand in the axial direction - if you feel the movement without measurements, then the front hub bearing needs to be replaced.

Advice:

Before disassembling the unit, try tightening the hub nut, then do the diagnostics again. There is a high probability that the noise will go away, but this will not last long, at least it will allow you to drive another 100-200 km.

Reasons for failure:

1. Not economical driving, over pits and potholes in the asphalt.
2. Frequent overheating of the mechanism.
3. Damage to the boot, contamination of the spare part from the inside.
4. Wear of the product according to the warranty service life (60 thousand km stated).
5. Malfunction of other elements (the brake disc is unbalanced, the rotating mechanism is worn out or the wheels are unbalanced, etc.).

Be sure to watch the video on how to check a wheel bearing:

How to check a wheel bearing

In what cases is replacement required?

Given that the service life of the hub bearing on the VAZ 21099 is designed for several years, the need to replace it may arise much earlier than expected. The reason for this may be driving on bad roads, sharp turns at high speed, or dirt and moisture getting into the mechanism. And, of course, the greater the mileage of the car, the higher the percentage of probability of bearing failure.

When a bearing fails, the following signs of its malfunction are observed:

• whining sound when turning a wheel;
• when driving on a straight road, a crunching sound is heard from the side of the wheel and in the passenger compartment;
• There is a vibration in the steering wheel. Usually this indicates a pre-failure condition of the bearing as a result of its severe wear;
• while driving, you feel that the wheel is moving to the side;
• When you rock the wheel with your hands, clicks will be heard.

The need for a new bearing exists when play and extraneous noise appear. If the bearing is installed incorrectly, it will be sufficient to dismantle it and reinstall it in the correct position.

Three ways to replace the front wheel bearing on a VAZ 2109 with your own hands

There are three popular methods that vary in speed and quality of replacement. Depending on your needs, choose the replacement option that suits you. Before performing any operations, familiarize yourself with the unit structure.

Preparatory activities before replacement

Regardless of the chosen replacement option, you will need a minimum set of tools:

• Large screwdriver.
• Keys: 17, 13, 10.
• Hexagon 10.
• Hammer and chisel.
• A long 30mm wrench or a 30mm socket with a knob.
• Wheel puller for VAZ (photo).
• Mandrels (or heads) for knocking out the old part from the hub.
• Torque wrench.

We prepare the car, place it on a flat surface, you will also need bright lighting. You will complete all the work faster with an assistant, and also if you use an inspection hole (overpass). Put the car in first gear, and be sure to put chocks under the rear wheels.

Advice:

The first, more efficient and high-quality replacement option is recommended for work, since pressing in and out is carried out using a removable device, in a shock-free manner.

Continuation of the broken hub nut.

Hello everyone!) They asked me to tell you how I solved the problem. I'm telling you. Sorry for the low quality photo. Phone without autofocus.

I got to Gorda from the dacha (20 km) without incident, I drove 40-50 km/hour. I checked several times to see if it was in the right place; to do this, I put a stamp on the spare wheel so that it could be seen right away.

In the morning I set about solving the problem I created.