Malfunctions of the hub bearing VAZ 2107 and its replacement

The hub bearing of the VAZ 2107 wears out over time, which leads to faster wear of tires, brake pads and discs. If measures are not taken in a timely manner to replace the bearing, the part may jam, resulting in a loss of vehicle control. This indicates the need to monitor the condition of the mechanism, periodically adjust and replace it.

The purpose of the hub bearing VAZ 2107

The wheel bearing VAZ 2107 is a part by which the wheel is fastened to the steering knuckle, and the wheel itself is rotated. In a car, this element is constantly affected by temperature changes, the environment, bumps from road irregularities, brake and steering jerks. With a good bearing, the wheel should rotate without any play, with noise and minimal friction allowed.

The wheel bearing secures the wheel to the steering knuckle

The part in question has a fairly large resource. However, there are many factors that drastically reduce its lifespan. These include:

1. Poor road quality is one of the reasons for the rapid failure of wheel bearings. This is explained by the fact that the element is located in the center of the wheel and perceives strong loads during the impact when hitting bumps. For some time, the bearing withstands such impacts, but gradually collapses.
2. Impact of aggressive environment. In summer, moisture and road dust get inside the hub, and in winter, chemical reagents penetrate.
3. Overheat. The rotation of the wheels is constantly associated with friction and an increase in temperature. With constant heating and cooling, which is especially typical for winter, the life of the bearings is reduced.

Where is the wheel bearing located?

Based on the name, you can already understand that the part is located near the hub. On the VAZ 2107, the element is installed in its internal cavity and changes, as a rule, upon failure, as evidenced by characteristic signs.

Symptoms of a malfunction

The wheel bearing must always be in good condition. If the part has become unusable, then this can lead to an accident, since the malfunction is accompanied by a large wheel play. As a result, the disc may shear off the wheel bolts. If this situation occurs at high speed, then a serious accident cannot be avoided. This suggests that the hub bearing needs periodic inspection, and if play is detected, it needs to be adjusted or replaced.

The main manifestations of a part failure are:

1. Dry crunch. When the bearing breaks, a metallic crunch occurs during movement. It manifests itself as a result of uneven rolling of the rollers due to damage to the separator. It is difficult to confuse this sound with any other.
2. Vibration. If the element in question has severe wear, vibration appears, which is transmitted both to the body and to the steering wheel. It indicates severe wear of the bearing cage, which can lead to seizing.
3. The car pulls to the side. The problem is somewhat reminiscent of the case with incorrect wheel alignment, since the faulty element does not work correctly due to wedging of its parts.
   

   If the bearing fails, extraneous noise, hum or crunch appear

Breakage detection

To determine the condition of the hub bearing, you need to follow a few simple steps:

1. Hang the front wheel from the right side with the help of a jack, not forgetting to put the car on the handbrake and set the stops under the rear wheels.
2. A support is installed under the lower suspension arm and the car is removed from the jack.
3. They take the wheel with both hands (top and bottom) and perform movements from themselves to themselves, while no play or knock should be felt.
4. Spin the wheel. If the bearing has become unusable, a rattle, hum or other extraneous noise may occur.
   

   To check the bearing it is necessary to hang out and shake the front wheel

During work with the wheel removed, for safety reasons, it is recommended to substitute an additional stop under the car body, which will secure in case of a sudden fall of the car.

What bearings to put

When a wheel bearing needs to be replaced, the question immediately arises of which part to install. Many advise using original components. However, today the quality of parts leaves much to be desired and the question of choice remains quite relevant.

Table: type, installation location, and dimensions of bearings

Installation location	Bearing type	Size, mm	Quantity
Front wheel hub (outer support)	Roller, conical, single row	19,5 * 45,3 * 15,5	2
Front wheel hub (inner support)	Roller, conical, single row	26 * 57,2 * 17,5	2
Rear axle shaft	Ball, radial, single row	30 * 72 * 19	2

Manufacturer selection

When choosing a wheel bearing manufacturer for the VAZ "seven", we can recommend SKF , SNR, FAG, NTN, Koyo, INA, NSK. The listed companies have many enterprises around the world. Such products are of high quality and meet the most stringent requirements.

The choice of bearing manufacturer should be given special attention, since the service life of the product depends on it.

Of the domestic manufacturers that supply bearings for cars of the Togliatti plant, we can distinguish:

• CJSC LADA Image - manufactures and sells original Lada wheel bearings through secondary markets;
• Saratov Plant - produces parts under the SPZ brand;
• Volzhsky Zavod - uses the Volzhsky Standard brand;
• Vologda Plant - sells products under the VBF brand;
• Samara plant SPZ-9.

Replacing the front hub bearing

Work on replacing the wheel bearing begins with the preparation of tools and materials. You will need:

• set of socket wrenches;
• screwdriver;
• chisel;
• a hammer;
• passages;
• extension for knocking out the bearing cage;
• new bearing, oil seal and grease;
• rags;
• kerosene.

How to remove

To dismantle the parts, raise the front wheel with a jack. In a service station, work is carried out on a lift. When replacing a bearing, follow these steps:

1. Unscrew the fasteners and remove the wheel.
2. Unscrew the mount and dismantle the caliper.
   

   To remove the caliper, unscrew the bolts of its fastening
3. Using a screwdriver, pry off the protective cap of the hub and remove it.
   

   The protective cap is pry off with a screwdriver and removed
4. Align the flange of the hub nut.
   

   To unscrew the nut, you need to align its side
5. Unscrew the nut and remove it along with the washer.
6. Dismantle the hub.
   

   After unscrewing the nut, it remains to remove the hub from the car
7. Remove the outer bearing cage.
8. With the help of a tip and a hammer, the clip of the outer part is knocked out of the hub.
   
   

   Bearing cages are knocked out using a drill
9. Pull out the ring that separates both wheel bearings and the oil seal.
10. Knock out the inner lining.
11. With the use of kerosene and rags, the seat is cleaned of dirt.

To avoid damage to the brake hose after removing the caliper, the latter is carefully suspended and fixed with a wire.

How to put

After dismantling the wheel bearings and cleaning the hub itself, you can begin to install new parts. The work is performed in the following order:

1. Press in the races of both bearings.
   

   The bearing race is pressed in using a suitable tool.
2. Lubricate the separator and insert it inside the hub.
   

   The separator of the new bearing is filled with grease
3. The space between the bearings is filled with grease.
   

   The space between the bearings is filled with grease.
4. Insert the spacer ring.
5. Install a new seal.
   

   A new oil seal is driven through the guide
6. Install the hub on the axle of the steering knuckle.
7. Lubricate the outer cage and place it in the bearing race.
   

   Lubricate the outer cage and insert it into the bearing race.
8. Put the washer in place and tighten the hub nut until it stops.
9. At the end of the replacement of the wheel bearings, they are adjusted, for which they smoothly unscrew the nut and ensure that the hub rotates freely, but there is no play.
10. They strike the side of the nut with a chisel, which will prevent its arbitrary unscrewing.
    

    To fix the nuts, strike with a chisel on the side
11. Install the caliper in place and tighten the fasteners.
12. Mount the protective cap, wheel and tighten the bolts.
13. They drop the car.

Video: how to replace the front hub bearings VAZ 2107

Replacing the bearings of the front hub VAZ 2107

How to lubricate

To lubricate wheel bearing cages, Litol-24 is used. It is also used to apply a new oil seal to the working edge during installation.

Bearing nut tightening torque

The need to tighten the hub nut occurs after replacing the bearings or during their adjustment. The nut is tightened with a torque wrench to a torque of 9,6 Nm, while turning the hub several times to install the bearings in place. Then the nut is loosened and tightened again, but with a torque of 6,8 N m, after which it is locked in this position.

The hub nut is tightened with a torque wrench

Axle bearing replacement

The axle shaft is an integral part of the VAZ 2107 rear axle. The axle shaft itself practically does not break, but the bearing, through which it is attached to the stocking of the bridge, sometimes fails. Its purpose is to smoothly and evenly rotate the axle shaft while the car is moving. The symptoms of bearing failure are the same as those of the hub elements. In the event of a malfunction, it is necessary to dismantle the axle shaft and replace the defective part.

Bearing removal

Before starting work, you need to prepare the following list of tools:

• a set of socket wrenches with a collar;
• a hammer;
• flat screwdriver;
• chisel;
• the Bulgarian;
• new axle bearing with circlip.

To replace, follow these steps:

1. Hang the rear wheel with a jack, and then remove it, not forgetting to set the stops under the front wheels.
2. Dismantle the brake drum.
   

   To get to the axle shaft, you will need to remove the brake drum
3. Using pliers and a screwdriver, dismantle the brake pads.
4. With a 17 socket wrench, unscrew the axle shaft mount.
   

   The axle shaft mounting bolts are unscrewed with a socket wrench by 17
5. Remove the axle shaft from the stocking of the rear axle.
   

   The axle shaft is removed from the stocking of the rear axle by pulling it towards you
6. The worn bearing is dismantled by setting a wrench of a suitable size and striking the tool with a hammer. Quite often, to remove the bearing, you have to cut the holder with a grinder, since the part sits quite firmly on the axle shaft.
   

   Often the bearing cannot be removed, so it is cut off with a grinder

To dismantle the drum, you need to carefully strike on its inside through a wooden block.

Installing a new part

After removing the bearing, you can immediately proceed to reassembly:

1. Clean the axle shaft from dirt and wipe with a rag.
2. A new bearing is pressed onto the axle shaft, after which the retaining ring is mounted. To mount the latter, it is advisable to heat it up with a blowtorch, which will provide an easier fit and secure hold after cooling.
   

   To make it easier to fit the ring on the axle shaft, it is heated with a gas burner or blowtorch
3. Remove the old axle shaft seal from the rear axle stocking with a screwdriver or pliers.
   

   The old stuffing box is removed with pliers or a screwdriver
4. A new seal is driven in through a fitting of a suitable size.
   

   A new cuff is installed using the adapter
5. Mount the half shaft in place. The axle shaft bearing plate fastening nut is tightened with a torque of 41,6–51,4 N m.

Video: replacing the axle shaft bearing on the "classic"

Replacing the semi-axle bearing of the VAZ 2101-07 classic.

Replacing a wheel bearing on a VAZ "seven" is not a difficult procedure. To carry it out, you will need to prepare the necessary tools and materials, as well as read the step-by-step instructions. When choosing a quality product and properly carrying out repairs, the bearing will work for a long time without any problems.