Auto repair school - Do-it-yourself car repair

The wheel bearing ensures uniform rotation of the wheel around its own axis. Of all the elements of the car's chassis, it is the first to meet and distribute shock loads, so the main requirements for this part are strength and durability.

In this article we will talk about what a rear wheel bearing is on a VAZ-2108. We will look at the design of this device, its dimensions, and also understand the process of replacing it.

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.

Manufacturers.

Domestic manufacturers:

• SPZ-Group
• LADA
• VBF
• Volzhsky standard

Foreign manufacturers:

• SNR (NTN)
• SKF
• INA
• NSK
• KOYO
• Timken

When choosing a quality product, it is better to buy from manufacturers of foreign brands. Domestic brands have a low price and are more widespread on the market than their foreign counterparts.

When replacing a product, it is extremely important to use high quality replacement parts. Low quality aftermarket products may not be sufficiently suitable for the application, causing end play problems. This can cause drivability problems that lead to costly returns. It is recommended to purchase only from official dealers or directly from the manufacturer.

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:

When to replace

The rear wheel bearing should be changed no later than every 100 thousand kilometers. But the realities of our roads and the quality of products are such that in fact the service life of the element is noticeably less than the specified period.

Practice shows that it is necessary to change the spare parts every 50-60 thousand kilometers, and in some cases even more often. It is best to focus not on mileage, but on signs of wear.

Symptoms of a problem

The car itself will tell you that it’s time to change the air conditioner by displaying the following signs:

• There is a noise, a strong hum or knocking sound in the rear of the car when driving;
• Play is detected in the bearing.

Checking status

If one of the symptoms appears on your VAZ 2109, you must lift the rear wheels one by one and make sure whether the problem is really in the bearings. For this:

• Lift the wheels and spin each one by hand;
• Listen to whether any extraneous sounds appear when the wheel spins;
• If you hear a characteristic hum, this indicates wear on the wheel bearing;
• Check the assembly for play. The wheels must be hung;
• Firmly grasp the top of the wheel and pull away from you and towards you;
• If the bearing is in good condition, the wheel will not move, that is, play;
• If there is a build-up, then you will have to replace the spare parts.

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:

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:

Diagnostics, signs of malfunction, causes of failure

With proper operation, the ball bearing itself can last a really long time - about 100,000 kilometers. However, there are a number of reasons why a part may become unusable much earlier. Among them:

• frequent driving at high speed on bad roads;
• improper installation without lubrication (resulting in overheating and increased wear);
• prolonged exposure to an aggressive environment (water, dirt, other abrasives or liquids that get inside);

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:

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:

Diameter and number of balls

The rolling elements of this bearing are placed through a special groove. Balls with a diameter of 9.525 mm are used as moving elements of the product. In the space between the clips they are placed in two rows, the total number per unit is 28 pcs.

The balls are held at specified positions using a separator. Its task is to position the rolling elements, but not to interfere with their free rotation.

There are ball bearings 256706 with a cage made of steel (without additional designation) and plastic materials: textolite (E, E1, E2) and polyamide (E9).

These features significantly affect the characteristics of a particular product, and therefore, before buying a replacement, you should learn more about the pros and cons of a particular separator.

Important! The use of composite materials for the manufacture of wheel bearing cages can significantly reduce their weight without compromising consumer characteristics. In addition, if such parts fail, they do not create solid debris that can aggravate the situation.

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:

Required Tools

To complete the work, nothing unusual is required - most of the tools are already in the car enthusiast’s garage:

• pliers (with their help it will be necessary to dismantle the retaining rings);
• socket wrench. If you have the whole set, great, but for this work, number “30” is especially necessary;
• spanner wrench Again, you can use a set, but one “12” key is enough for the job. Without it, it will not be possible to remove the guide pins from the brake drum;
• special puller (necessary for pressing out bearings);
• Additional tools that may be useful are a hammer, a small wooden block, a pry bar and a chisel.