Replacing the front bearing hub of a VAZ 2108: step-by-step instructions

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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.

What bearings are installed on VAZ 2108, 2109, 21099?

1. Differential bearings - 2108-2303036-01;
2. Steering shaft bearings - 2108-3401120;
3. Front steering gear bearing - 2108-3401123;
4. Upper support bearing of the front strut - 2108-2902840;
5. Rear steering gear bearing - 2108-3401104;
6. Rear bearing of the primary and secondary shaft of the gearbox - 2108-1701033;
7. Intermediate bearing of the secondary shaft of the gearbox - 2108-1701108;
8. Front bearing of the gearbox input shaft - 2108-1701031-01;
9. Front bearing of the secondary gearbox shaft - 2108-1701180-01;
10. Release bearing - 1111-1601182;
11. Generator front bearing - 249402030;
12. Generator rear bearing - 24940220;
13. Timing belt tensioner bearing - 2108-1006120;
14. Engine coolant pump bearing - 2108-1307027-12;
15. Front wheel hub bearing - 2108-3103020-01;
16. Rear wheel hub bearing - 2108-3104020.

Cause of wheel bearing failures

Wheel bearings on the VAZ 2109 are parts that often need replacement, a weak link. But the main reason for this weakness is not even the quality of the products (although this also matters), but the quality of the domestic road surface in most regions.

On average, manufacturers promise 100,000 km of mileage for their products, however, wheel bearings on a VAZ 2109 have to be changed much earlier. In terms of domestic roads, this is 50,000, maximum 60,000 km.

On the VAZ 2109 there is no turning of the rear axle, and the hubs are rigidly attached to the suspension. The bearing in the hub is pressed tightly, ensuring smooth rotation of the hub itself on the shaft. There should be no play, crunching, or jamming in this design; it is responsible for the rotation of the wheel. A strong blow to the suspension often leads to damage to the wheel bearings; reckless off-road driving has a bad effect on the chassis.

Torque is transmitted to the drive wheels through the gearbox from the engine; if the wheel bearings fail, this can lead to jamming and a complete stop of the wheel. So, it is best to take care of the need to replace the wheel bearing on a VAZ 2109 in advance.

Reasons for premature wear of a part:

• Off-road driving, especially careless driving. A sudden hit of a wheel in a pothole, a hole, “shock” overcoming potholes and potholes at high speed.
• No lubricant or insufficient amount. The cause of loss of lubricant is damage to the protective boots, the lubricant leaks, and the bearing wears out and fails prematurely. Damage to the seals also leads to loss of lubrication.
• Too much grease.
• The quality of the lubricant is low or it is not suitable for this model.
• Frequent overheating of the hub mechanism.
• When replacing the bearing, the tightening was done incorrectly. An overtightened hub nut (thermal clearance regulator) leads to failure of the cone bearing units due to friction and overheating. If the tightening is weak, the bearings break due to the resulting play and runout.
• Incorrect, uneven, distorted pressing. As a result, the loads on the bearing are uneven, wear is also uneven, and the operation of the element is unreliable.
• Driving through puddles, wet mud, “belly-deep”, at high speed. Dirt gets into all seams and joints, moisture washes away the lubricant, the metal undergoes oxidation and corrosion, friction increases, causing overheating of the mechanism.
• Tires have not been balanced. The beating that occurs without this is transmitted not only to the hub bearings, it is also noticeable in the cabin. The bearings acquire unacceptable play and are destroyed.
• The size of disks and wheels is unacceptable for the design. When increasing the weight of the wheel (larger ones weigh more), and installing beautiful large disks, it is necessary to take into account the permissible loads from such a design on the hub mechanism. If there is a mismatch, the bearings will fail quickly.
• Overloads under the influence of multidirectional forces of rotation and braking, turns, in the case of the front wheels. Malfunctions of the brake system, sudden braking, and problems with steering increase the load on the bearings and also lead to their failure.
• Problems with shock absorbers. In this case, the mechanism experiences excessive, uneven shock loads.

Of course, if you drive carefully, the wheel bearings on the VAZ 2109 will require replacement after the 100,000 km specified by the manufacturers; any part has its own service life. One way or another, the need for replacement is determined by a number of characteristic signs. It is advisable to know them in order to change the wheel bearing on a VAZ 2109 in time, but not to allow unscrupulous service station specialists to impose an expensive, unnecessary service.

Wheel bearing 2108, 2109, 21099

Rear hub bearing 2108, 2109, 21099

Characteristics: ball, angular contact, double-row, closed type, sealed on both sides.

Designation (article) of the rear wheel hub bearing:

• According to VAZ classification - 2108-3104020;
• According to the classification of the bearing plant (GPZ) - 6-256706E1C17.

Dimensions of bearing 2108-3104020 rear hub VAZ 2108, 2109, 21099:

• Outer diameter D - 60 mm;
• Inner diameter d - 30 mm;
• Thickness B - 37 mm.

Technical characteristics of wheel bearing 2108-3104020:

Installation location of the rear wheel bearing for VAZ 2108, 2109, 21099:

Front wheel bearing 2108, 2109

Characteristics: ball, angular contact, double-row, closed type, sealed on both sides.

Designation (article) of the front hub bearing:

• According to VAZ classification - 2108-3103020-01, 2108-3103020-02;
• According to the classification of the bearing plant (GPZ) - 6-256907AE7C17, 6 - 256907E9C17.

Bearing dimensions 2108-3103020-01 front hub VAZ 2108, 2109, 21099:

• Outer diameter D - 64 mm;
• Inner diameter d - 34 mm;
• Thickness B - 37 mm.

Technical characteristics of the front hub bearing 2108-3103020-01:

Installation location of the front wheel bearing for VAZ 2108, 2109, 21099:

Front strut support bearing 2108, 2109, 21099

Characteristics: ball, angular contact, single-row, closed type, sealed on both sides.

Designation (article) of the support bearing of the front strut of VAZ 2108, 2109, 21099:

• According to VAZ classification - 2108-2902840, 2108-2902840-01;
• According to the classification of the bearing plant (GPZ) - 348702C17, 6 - 348702C17.

Dimensions of support bearing 2108-2902840 front strut VAZ 2108, 2109, 21099:

• Outer diameter D - 52 mm;
• Inner diameter d - 14.5 mm;
• Thickness B - 14 mm.

Technical characteristics of the front strut support bearing 2108-2902840:

Installation location of support bearing 2108-2902840 front strut VAZ 2108, 2109, 21099:

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 done using a removable device, in a shock-free manner.

Tools and materials for work

• Wheel chocks;
• Socket head for nine, thirteen, fifteen, nineteen, thirty;
• Power wrench;
• Jack;
• Wheel bolt wrench;
• Car stand;
• Nineteen spanner;
• Penetrating lubricant;
• Ratchet driver;
• Kardanchik;
• Extension;
• Pliers;
• Vise;
• Torque wrench;
• Extensions for dismantling and installing bearings;
• Hammer;
• Deep head for seven;
• Slotted screwdriver;
• Rubber hammer;
• Bulgarian;
• Chisel;
• Circlip pliers;
• Lithium grease.

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Sequencing

1. First of all, the car should be in first gear, after which the car is put on the handbrake. Wheel chocks must be placed under the rear wheels.
2. The car is jacked up, the wheel, in the hub of which the bearing is damaged, is removed.

   The car is on a jack, the wheel is removed, the hub is visible

3. Use a 30 mm socket wrench to unscrew the wheel bearing nut.

   The nut is unscrewed with a 30mm head

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4. Using a flat screwdriver, pry up the caliper, then it should be unscrewed from the steering knuckle (for this, use a 17 mm spanner).
5. The unscrewed caliper should be tied with something (otherwise it will hang on the brake hose and this hose may come off under its weight). You should also unscrew the brake disc from the hub.
6. Now you need to remove the wheel bearing itself. To get to it, you must first remove the steering knuckle, which will require unscrewing a couple of bolts that secure the knuckle to the car's ball joint.

   Use a spanner to unscrew the ball joint bolts

7. Using an attachment of a suitable diameter (you can use a piece of steel pipe of the required diameter as this attachment), you should knock the hub out of the bearing, after which you need to remove the retaining ring (pliers are excellent for removing the retaining ring).

   It is better to knock out the hub with a pipe of suitable diameter

   The best way to remove the ring is with pliers.

8. Now you need to press out the bearing. This is done using a puller pre-clamped in a vice.

   Pressing out the bearing with a puller

   The bearing was successfully pressed out by the puller

9. After pressing out the bearing, the place where it was located must be thoroughly cleaned of rust and dirt, and then lubricated.
10. The new wheel bearing is pressed into the steering knuckle using a vice and a puller, and the retaining ring is installed in place.
11. The knuckle with the new bearing is screwed back to the ball joint, the unit is reassembled, and the wheel is installed in place.

Gearbox bearings 2108, 2109, 21099

Front bearing gearbox 2108, 2109, 21099 input shaft

Description: roller, radial, single-row.

Designation (article) of the roller front bearing of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

• According to VAZ classification - 2108-1701031-01, 2108-1701031-02, 2108-1701031-03, 2108-1701031-04;
• According to the classification of the bearing plant (GPZ) - B66-42205AEM1SH1, 6-42205A1EUSH1, 6-42205A1E1USH1.

Dimensions of the front bearing 2108-1701031-01 of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

• Outer diameter D - 52 mm;
• Inner diameter d - 25 mm;
• Thickness B - 15 mm.

Technical characteristics of the front bearing 2108-1701031-01 of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

Installation location of the front bearing 2108-1701031-01 of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

Rear gearbox bearing 2108, 2109, 21099 input shaft

Description: ball, radial, single-row.

Designation (article) of the rear ball bearing of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

• According to VAZ classification - 2108-1701033, 2108-1701033-02, 2108-1701033-03;
• According to the classification of the bearing plant (GPZ) - B6-50305A1E, B6-50305A1E-1, 6-50305AE-1.

Dimensions of the rear bearing 2108-1701033 of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

• Outer diameter D - 62 mm;
• Inner diameter d - 25 mm;
• Thickness B - 17 mm.

Technical characteristics of the rear bearing 2108-1701033 of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

Installation location of the rear bearing 2108-1701031-01 of the input shaft of the VAZ 2108, 2109, 21099 gearbox:

Front bearing of the secondary shaft of the gearbox

Description: roller, radial, single-row.

Designation (article number) of the roller front bearing of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

• According to VAZ classification - 2108-1701180-01, 2108-1701180-02, 2108-1701180-03, 2108-1701180-04;
• According to the classification of the bearing plant (GPZ) - 6-42305AEУШ1, 6-42305AE1УШ1, B6-42305AEMШ1.

Dimensions of the front bearing 2108-1701180-01 of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

• Outer diameter D - 62 mm;
• Inner diameter d - 25 mm;
• Thickness B - 17 mm.

Technical characteristics of the front bearing 2108-1701180-01 of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

Installation location of the front bearing 2108-1701180-01 of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

Rear bearing of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox

Description: ball, radial, single-row.

Designation (article) of the rear ball bearing of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

• According to VAZ classification - 2108-1701033, 2108-1701033-02, 2108-1701033-03;
• According to the classification of the bearing plant (GPZ) - B6-50305A1E, B6-50305A1E-1, 6-50305AE-1.

Dimensions of the rear bearing 2108-1701033-02 of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

• Outer diameter D - 62 mm;
• Inner diameter d - 25 mm;
• Thickness B - 17 mm.

Technical characteristics of the rear bearing 2108-1701033-02 of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

Installation location of the rear bearing 2108-1701033-02 of the secondary shaft of the VAZ 2108, 2109, 21099 gearbox:

Needle bearings of the secondary shaft of the gearbox 2108, 2109, 21099

Description: roller, needle, single-row.

Designation (article) of the needle bearing of the gearbox secondary shaft VAZ 2108, 2109, 21099:

• According to VAZ classification - 2108-1701108, 2108-1701108-01, 2108-1701108-02, 2108-1701108-03;
• According to the classification of the bearing plant (GPZ) - 464706E1.

Dimensions of needle bearing 2108-1701108 of the gearbox secondary shaft VAZ 2108, 2109, 21099:

• Outer diameter D - 37 mm;
• Inner diameter d - 32 mm;
• Thickness B - 27 mm.

Technical characteristics of the needle bearing 2108-1701108 of the secondary shaft gears of the VAZ 2108, 2109, 21099 gearbox:

Installation location of the needle bearing 2108-1701108 of the secondary shaft gears of the VAZ 2108, 2109, 21099 gearbox:

Steering bearing 2108, 2109, 21099

Steering shaft bearing VAZ 2108, 2109, 21099

Description: ball, single row, radial.

Designation (article) of the steering shaft bearing VAZ 2108, 2109, 21099:

• According to VAZ classification - 2108-3401120;
• According to the classification of the bearing plant (GPZ) - 930904.

Dimensions of bearing 2108-3401120 steering shaft VAZ 2108, 2109, 21099:

• Outer diameter D - 37 mm;
• Inner diameter d - 21.6 mm;
• Thickness B - 11, mm.

Technical characteristics of bearing 2108-3401120 steering shaft VAZ 2108, 2109, 21099:

Installation location of bearing 2108-3401120 steering shaft VAZ 2108, 2109, 21099:

Front steering gear bearing

Description: ball, single row, radial.

Designation (article) of the front bearing of the steering gear VAZ 2108, 2109, 21099:

• According to VAZ classification - 2108-3401123, 2108-3401123-01, 2108-3401123-02;
• According to GOST - 80-903E.

Dimensions of the front bearing 80-903E steering gear VAZ 2108, 2109, 21099:

• Outer diameter D - 35 mm;
• Inner diameter d - 17.7 mm;
• Thickness B - 8 mm.

Technical characteristics of the front bearing 80-903E steering gear VAZ 2108, 2109, 21099:

Installation location of the front bearing 80-903E steering gear VAZ 2108, 2109, 21099:

Rear steering gear bearing

Description: roller, needle, single-row, radial.

Designation (article) of the rear bearing of the steering gear VAZ 2108, 2109, 21099:

• According to VAZ classification - 2108-3401104;
• According to GOST - 604901US17.

Dimensions of rear bearing 2108-3401104 steering gear VAZ 2108, 2109, 21099:

• Outer diameter D - 17.46 mm;
• Inner diameter d - 15.11 mm;
• Thickness B - 13 mm.

Technical characteristics of the rear bearing 2108-3401104 steering gear VAZ 2108, 2109, 21099:

Installation location of rear bearing 2108-3401104 steering gear VAZ 2108, 2109, 21099:

Diagnosis of wheel bearing failure

Signs of a problem appear, first of all, in the noise accompanying the movement. The sound of an accelerating subway train is what the whine that arises most resembles; it can come from one side or both; its appearance in the noise of the chassis clearly indicates the appearance of problems in the hub mechanism. At the very beginning, the problem makes itself felt at a speed of 50 km/h, during acceleration and when cornering, the noise will intensify.

Listen to what a bad wheel bearing sounds like in this video:

It is important not to confuse noise from bearings and a similar noise “alarm” from a gearbox or rear axle gearbox. The similarity is great, however, the transmission “makes itself known” at the start, during acceleration, and when changing driving modes. Wheel bearings provide a constant “sound effect”, to which knocking and other characteristic noises and vibrations are later added.

If you detect characteristic noises, you should try to eliminate the problem by simply tightening the hub nut. Then you need to check the unit, most likely there will be no more noise. But this is an option that will help you get to a workshop or other place for repairs without any problems. The braces are enough for 100 – 200 km of travel.

Signs that it’s time to change the wheel bearings on a VAZ 2109:

• When driving, especially when turning, there is a characteristic noise that turns into a howl, as well as knocking, crunching, and rattling. May only occur on one side. By the way, if you can already hear a grinding or crunching sound, the bearing is broken, and replacement is urgently needed, metal particles that have broken off from the mechanism crunch.
• Vibration is noticeable in the cabin itself. It is transmitted from damaged hubs to the steering wheel and body. Usually this is a sign that for some reason there is little lubricant left in the bearing, but it is clogged with dirt. Getting dirt and foreign objects inside the bearings causes chipping and destruction of the material of the balls and rings.
• Brake pedal vibrations.
• Any extraneous sounds from the suspension mechanisms, it is better to immediately check the condition of the hub assembly.
• The front bearings, by knocking and vibration, warn of strong play; a hum indicates poor condition, wear of the separators, rings or rollers.

Driving at a low (about 50 km/h) speed, like a “snake,” helps to find out which bearing is damaged. In this case, you need to carefully listen to the noises that arise when turning, they will indicate a problem unit. You also need to listen to which axle, front or rear, here a sharp turn will help identify the problem in the front hub.

To finally clarify the possible problems of suspicious nodes, you need to:

• lift the wheel with a jack;
• check the wheel itself for play without removing it, pull it towards you, away from you, in different planes, if the unit is in order, there will be no play (strong, small within acceptable limits);
• to be sure that the problem is in the bearing, it is necessary for someone to depress the brake when checking; if there is no play with the pedal pressed, the bearing must be replaced;
• by manually rotating the wheel, make sure that there is noise or absence of noise in the mechanism; the wheel should rotate smoothly, silently, without jamming or vibration;
• the damaged part heats up more, this can be verified by touch;
• with the wheel and brake disc removed, the play of the hub itself is checked; it must also be moved manually, towards the axle; strong play indicates the need for replacement;

It is important to pay attention to such a malfunction in a timely manner; driving with noise and vibration brings discomfort to passengers and the driver. In the absence of timely repairs, the destruction of the front bearing will lead to large play. The wheel starts to wobble and the car loses control.

The rear bearing will simply immobilize the car, jamming the wheel. In addition, as a result of such a breakdown, over time the entire rack will certainly suffer, then repairs will be more difficult and also much more expensive.

Release bearing 2108, 2109, 21099

Description: ball, radial, single-row.

Designation (article) of the release bearing VAZ 2108, 2109, 21099:

• According to VAZ classification - 1111-1601182, 2109-1601182;
• According to GOST - 6-520806KEChC30, 76520806K1C28Ш1.

Dimensions of release bearing 2109-1601182 VAZ 2108, 2109, 21099:

• Outer diameter D - 55 mm;
• Inner diameter d - 31 mm;
• Thickness B - 13 mm.

Technical characteristics of the release bearing 2109-1601182 VAZ 2108, 2109, 21099:

Installation location of release bearing 2109-1601182 VAZ 2108, 2109, 21099:

Differential bearing 2108, 2109, 21099

Description: roller, angular contact, single row.

Designation (article) of the differential bearing VAZ 2108, 2109, 21099:

• According to VAZ classification - 2108-2303036-01, 2108-2303036-02, 2108-2303036-03;
• According to GOST - 6U-7207AK, 6U-7207AK1.

Dimensions of bearing 6U-7207AK differential VAZ 2108, 2109, 21099:

• Outer diameter D - 72 mm;
• Inner diameter d - 35 mm;
• Thickness B - 18.25 mm.

Technical characteristics of bearing 6U-7207AK differential VAZ 2108, 2109, 21099:

Installation location of bearing 6U-7207AK differential VAZ 2108, 2109, 21099:

How to adjust the differential preload of a VAZ 2114

It happens that the blocking begins to lag or does not work at all. The reason is that the preload decreases or disappears altogether. In this case, you should not rush to change the entire assembly; it is recommended to try to increase its value (preload) yourself. To do this, you need to select the required thickness of the adjusting ring and install it in the gearbox housing socket. The whole procedure is quite labor-intensive, so it is recommended to use the vehicle’s operating instructions.

Causes of malfunctions

Due to the design features of the differential and its operational purpose, destructive processes occur due to friction, force loads and other reasons. As a result, active wear of the unit and its elements occurs. The main causes of malfunctions are as follows:

• Bearing wear and damage to their integrity;
• Damage or wear of oil seals;
• Insufficient amount of oil in the transmission, as well as its poor quality;
• Other reasons.

The first signs of problems in the operation of the VAZ 2114 differential:

• Increased noise in the bridge or box;
• Oil leaks;
• Bridge jamming;
• Plays and knocks during inspection;
• And other non-standard operation of the unit and its components.

If you observe abnormal operation of the differential mechanisms, the first thing that is recommended to do is to check all the connections of the unit for tightness and no oil leakage. If the integrity of connections and fastenings is not broken, and signs (noise or disruption of functionality) are present, dismantling and disassembling of the unit is required to identify and eliminate the causes.

Generator bearing 2108, 2109

Generator front bearing

Description: ball, angular contact, single-row, closed.

Designation (article) of the front bearing of the VAZ 2108, 2109, 21099 generator:

• According to VAZ classification - 249402030;
• According to GOST - 6-180302U.

Dimensions of the front bearing 6-180302U of the VAZ 2108, 2109, 21099 generator:

• Outer diameter D - 42 mm;
• Inner diameter d - 15 mm;
• Thickness B - 13 mm.

Technical characteristics of the front bearing 6-180302U of the VAZ 2108, 2109, 21099 generator:

Installation location of the front bearing 6-180302U of the VAZ 2108, 2109, 21099 generator:

Generator rear bearing

Description: ball, radial, single-row, closed, with double-sided seal.

Designation (article) of the rear bearing of the VAZ 2108, 2109, 21099 generator:

• According to VAZ classification - 24940220;
• According to GOST - 6-180201U.

Dimensions of the rear bearing 6-180201U of the VAZ 2108, 2109, 21099 generator:

• Outer diameter D - 32 mm;
• Inner diameter d - 15 mm;
• Thickness B - 10 mm.

Technical characteristics of the rear bearing 6-180201U generator VAZ 2108, 2109, 21099:

Installation location of the rear bearing 6-180201U of the VAZ 2108, 2109, 21099 generator:

Pump bearing 2108, 2109, 21099

Description: ball, radial, single-row, closed, with double-sided seal.

Designation (article) of the pump bearing VAZ 2108, 2109, 21099:

• According to VAZ classification - 2108-1307027-12, 2108-1307027-13, 2110-1307027;
• According to GOST - 6-4224703EC17, 6-1HP16092EC30, 6-1HP16092KC30.

Dimensions of bearing 6-4224703EC17 pump VAZ 2108, 2109, 21099:

• Outer diameter D - 30 mm;
• Inner diameter d - 16 mm;
• Thickness B - 39 mm.

Technical characteristics of bearing 6-4224703EC17 pump VAZ 2108, 2109, 21099:

Installation location of bearing 6-4224703EC17 for VAZ 2108, 2109, 21099 pump: