Gearbox bearing (5-mortar) repair kit for VAZ Classic, Niva

The gearbox on the VAZ classic (which includes the “seven”) is particularly reliable. Often the gearbox “survives” 1-2 engine repairs before it has to be repaired. But sooner or later, her turn comes. One of the gearbox parts that most often requires replacement is the VAZ 2107 input shaft bearing .
The reason for its premature failure may be a factory defect or extreme driving style. If you “tear the gearbox lever”, constantly overload it with sudden accelerations or heavy loads when towing, even a high-quality bearing will not be able to hold out for long. Another reason for bearing failure may be neglect of regular gearbox maintenance regulated by the manufacturer. Many believe that replacing the input shaft bearing requires complete disassembly of the gearbox and prefer to entrust this operation to specialists at a service station. But practice has shown that complete disassembly of the gearbox is not required. You can change the input shaft bearing yourself without seriously disassembling the gearbox, and the operation does not require the highest qualifications or special devices and tools.

Layout of bearings in VAZ 2107 units

Layout of bearings in VAZ 2107 units with a four-speed gearbox

CARBURETOR VAZ 2107

Layout of bearings in VAZ 2107 units with a five-speed gearbox

Tips and recommendations for replacing bearings in a VAZ 2107 box

As basic advice, we can give recommendations on the selection of units for replacement. Foreign products are not always superior in quality to Russian products, which are produced according to strict government standards. Therefore, you should not focus on cost when purchasing. Also, when working on editing these details, you need to strictly follow the sequence of actions. A gearbox is a complex mechanism consisting of many components. And if the reassembly procedure is not followed or other parts are unintentionally damaged, the disassembly procedure will have to be repeated again.

For ease of use, you should always use a lift or pit in your garage. This will allow not only the replacement of parts, but also the prevention of other elements of the gearbox and the general condition of the gearbox. In addition, great attention must be paid to the moment of centering and tightening of parts. If the load increases, the life of the bearing decreases in proportion to the increase in load and, therefore, the bearing will need to be replaced at lower strokes. In addition, during the repair process it is necessary to use high-quality lubricants, since without them the bearing itself will have to run dry, which also significantly reduces its own service life.

Wheel bearing of the front wheel of a VAZ 2107

Interior

internal wheel bearing of the front wheel of the VAZ 2107 is roller, tapered. There are 2 of them on the car.

Type of wheel bearing brand 6-7805U:

Design of wheel bearing brand 6-7805U:

Designation of the internal bearing of the front wheel hub:

• According to VAZ classification - 2101-3103020;
• According to the bearing plant classification - 6-7805U.

Dimensions of the front wheel rear wheel bearing:

• Outer diameter D - 57.15 mm;
• Inner diameter d - 26 mm;
• Thickness B - 17.46 mm.

Outer

Outer wheel bearing 6-7804U for the front axle VAZ 2107, roller, tapered. There are 2 of them for cars.

Type of wheel bearing brand 6-7804U:

Design of outer wheel bearing 6-7804U:

Front wheel outer wheel bearing designation:

• According to VAZ classification - 2101-3103025;
• According to the classification of the bearing plant - 6-7804U;
• International designation - LM 11949/910/Q.

In the designation of bearing 6-7804U, the letter “U” stands for special technical requirements (strict requirements for roughness, rotation accuracy, etc.)

Wheel bearing dimensions:

• Outer diameter D - 45.52 mm;
• Inner diameter d - 19.05 mm;
• Thickness B - 16.63 mm.

How to remove the input shaft from the box

The gearbox must be installed on a flat surface so that nothing prevents its disassembly. Before starting work, it is important to clean the housing from dirt and liquid leaks so that debris does not accidentally get inside the housing.

To work you will need standard tools:

You need to pull the input shaft out of the gearbox strictly according to the regulations:

Photo gallery: main stages of work

For further work, you will need to wipe all the mechanisms in order to be able to carry out troubleshooting.

Accordingly, installation of the input shaft into the gearbox is carried out in the reverse order of removal.

Rejecting the input shaft

When the car and gearbox are operating normally, the driver, as a rule, does not have any suspicions about the exhaustion of the shaft and its elements. However, if the car starts to “strange things”, for example, the gear does not work or the speed starts to switch on in an arbitrary order, then you need to make sure that the box and, in particular, the input shaft are working.

Rejection is carried out with the gearbox removed, since only in this way can you carefully examine all the shaft parts and determine their suitability for further use.

The correct culling procedure is carried out according to the following scheme:

That is, a routine inspection of the mechanism allows you to determine the degree of wear of each element and, if necessary, replace them. It is important that the gears and the splined part of the input shaft do not have even the slightest damage, otherwise new parts will have to be installed.

Seven generator bearings

Rear bearing of VAZ 2107 generator (rectifier side)

The generator bearing on the drive side is ball, radial, closed, single row with double-sided seal - 2RS.

View of the rear bearing 6-180201U of the VAZ 2107 generator:

Design of the rear bearing 6-180201U of the VAZ 2107 generator:

Designation of the generator support bearing on the rectifier side:

• By designation VAZ - 24940220;
• According to the designation of the bearing plant - 6-180201U (6201 2RS).

Generator rear bearing dimensions:

• Outer diameter D - 32 mm;
• Inner diameter d - 12 mm;
• Thickness B - 10 mm.

Generator front bearing (drive side)

The front bearing 6-180302U of the generator is ball, radial, closed.

View of the front bearing 6-180302U of the VAZ 2107 generator:

Design of the front bearing 6-180302U of the VAZ 2107 generator:

Generator front bearing designation:

• By designation VAZ - 24940230;
• According to the designation of the bearing plant - 6-180302U.

Alternator front bearing dimensions:

• Outer diameter D - 42 mm;
• Inner diameter d - 15 mm;
• Thickness B - 13 mm;
• The width of the outer race (C) is 13 mm.

VAZ 2107 gearbox bearings

Front bearing of the input shaft of the VAZ 2107 gearbox

The front bearing of the gearbox input shaft is ball, radial, closed.

View of the front bearing 6-180502K1US9 of the input shaft of the VAZ 2107 gearbox:

Design of the front bearing of the input shaft of the VAZ 2107 gearbox:

Name of the front bearing of the input shaft of the VAZ 2107 gearbox:

• According to VAZ definition - 2101-1701031;
• According to the article number of the bearing plant - 6-180502K1US9.

Dimensions of the front bearing of the input shaft of the Lada 2107 gearbox, mm - 15x35x14:

• Outer diameter D - 35 mm;
• Internal diameter d - 15 mm;
• Thickness B - 14 mm.

Transmission intermediate shaft front support bearing

The front bearing of the intermediate shaft of the gearbox is ball, angular contact, double row.

View of the front bearing of the intermediate shaft of the VAZ 2107 gearbox:

Design of the front bearing of the intermediate shaft of the VAZ 2107 gearbox:

Designation of the front bearing of the intermediate shaft of the VAZ 2107 gearbox:

• According to VAZ classification - 2101-1701068;
• According to the designation of the bearing plant - 6-156704.

Dimensions of the front bearing of the intermediate shaft of the VAZ 2107 gearbox, mm - 20x50x20.6:

• Outer diameter D - 50 mm;
• Internal diameter d - 20 mm;
• Thickness B - 20.6 mm.

Rear bearing of the input shaft of the five-speed gearbox VAZ 2107

The rear bearing of the input shaft of the five-speed gearbox VAZ 2107 is ball, radial.

View of the rear bearing 6-50706EU of the input shaft of the 5th gearbox VAZ 2107:

Design of the rear bearing 6-50706EU of the input shaft of the 5th gearbox VAZ 2107:

Determination of the rear bearing of the input shaft of the VAZ 2107 gearbox:

• According to VAZ classification - 2107-1701033;
• According to the designation of the bearing plant - 6-50706EU.

Dimensions of the rear bearing of the input shaft of the five-speed gearbox VAZ 2107, mm - 75x30x19:

• Outer diameter D - 75 mm;
• Internal diameter d - 30 mm;
• Thickness B - 19 mm;
• The width of the outer race (C) is 19 mm.

Front bearing of the secondary shaft of the VAZ 2107 gearbox

View of the front bearing 2101-1701108-01 of the secondary shaft of the VAZ 2107 gearbox:

Design of the front bearing 2101-1701108-01 of the secondary shaft of the VAZ 2107 gearbox:

The front bearing of the secondary shaft of the gearbox is roller, radial, without rings.

Designation of the bearing of the front secondary shaft of the VAZ 2107 gearbox:

• By AvtoVAZ designation - 2101-1701108-01;
• According to the manufacturer's classification - 46490E.

Dimensions of the front bearing of the secondary shaft of the VAZ 2107 gearbox, - 25.3x19.8x19.8:

• Outer diameter D - 25.3 mm;
• Inner diameter d - 19.8 mm;
• Thickness B - 19.8 mm.

Four-speed transmission countershaft rear bearing

View of the rear bearing 21070-1701073-00 of the intermediate shaft of the 4-speed gearbox VAZ 2105:

Design of the rear bearing 21070-1701073-00 of the intermediate shaft of the 4-speed gearbox VAZ 2105:

Rear bearing 21070-1701073-00 of the intermediate shaft of the four-speed gearbox, roller, radial.

Designation of the rear bearing of the intermediate shaft of the VAZ 2107 gearbox:

• According to VAZ classification - 21070-1701073-00, 21070-1701073-01, 21070-1701073-02;
• According to the bearing plant classification - 6-92705К, 6-92705АЭУШ1, .

Dimensions of the rear bearing of the intermediate shaft of gearbox 2107:

• Outer diameter D - 55 mm;
• Inner diameter d - 25 mm;
• Thickness B - 18 mm.

Bearing for the rear support of the secondary shaft of the four-speed gearbox

The rear bearing of the secondary shaft of the four-speed gearbox is ball, radial.

Type of bearing 2107-1701073 rear support of the secondary shaft of the 4-speed gearbox VAZ 2107:

Bearing design 2107-1701073 rear support of the secondary shaft of the 4-speed gearbox:

Designation of the rear bearing of the secondary shaft 4 of the VAZ 2107 gearbox:

• Designation VAZ - 2107-1701073;
• The designation of the bearing plant is 6-92705AE1.

Dimensions of the rear bearing of the secondary shaft of the 4-gearbox 2107:

• Outer diameter D - 55 mm;
• Inner diameter d - 25 mm;
• Thickness B - 18 mm.

Bearing of the secondary shaft of a five-speed gearbox

The bearing of the intermediate support of the secondary shaft of the five-speed gearbox is ball, radial.

Type of bearing 2107-1701190 intermediate support of the secondary shaft 5-speed gearbox VAZ 2107

Design of the bearing 2107-1701190 of the intermediate support of the secondary shaft of the 5-speed gearbox VAZ 2107

Name of secondary shaft bearing 5 st. VAZ 2107 gearbox:

• VAZ classification - 2107-1701190, 21070-1701190-01, 21070-1701190-03, 21070-1701190-04, 21070-1701190-05, 21070-1701190-06, 21070-1701190 -07;
• Classification of the bearing plant - 6V-50306E2U, 6-50306AE5USH1, 6-50306AKUSH1, 6-50306KUSH1, V6-50306KU2SH1, 6-50306AK1SH1, V6-50306AKUSH1.

Dimensions of bearing of secondary shaft 5 of gearbox 2107:

• Outer diameter (D) - 72 mm;
• Inner diameter (d) - 30 mm;
• Height (H) - 19 mm;
• The width of the outer race (C) is 19 mm.

Bearing of the gear block of the fifth stage of the five-speed gearbox VAZ 2107

Type of bearing 2108-1701031 gear block of the 5th stage of the 5th gearbox VAZ 2107

Design of bearing 2108-1701031 gear block of the 5th stage of the 5th gearbox VAZ 2107

Designation of the bearing of the gear block of the 5th stage of the five-speed gearbox VAZ 2107:

• VAZ article number - 2108-1701031, 21080-1701031-01, 21080-1701031-02, 21080-1701031-03, 21080-1701031-04;
• Factory article number: 66-422054E, B66-42205AEM1SH1, 6-42205A1EUSH1, 6-42205A1E1USH1, 6-42205A1E1USH1.

Dimensions of bearing of secondary shaft 5 of gearbox 2107:

• Outer diameter D - 52 mm;
• Inner diameter d - 25 mm;
• Height h - 15 mm.

First stage. Removing the gearbox from the car

Repair of the VAZ 2107 gearbox must be carried out when the first signs of a malfunction appear. For repairs, it is necessary to remove the gearbox from the vehicle.

On a note. It is quite difficult to do this alone. Therefore, it is advisable to have an assistant so that everything goes smoothly.

• the first thing to do is to lift the vehicle above the pit or onto an overpass;
• disconnect the wire with a minus sign that goes to the battery;

Do not forget that on VAZ cars, for repairs, the radio panel must be removed.

• press the box lever;
• a screwdriver is inserted into the marked hole. It has a bushing that is of the locking type;
• the screwdriver needs to be moved down;
• remove the sleeve from the rod;
• we separate this rod located on the RPP.

• the rubber bushing of the damper is removed from the rod using pliers;
• then you need to unclench the petals that grip the damper bushing, then you need to remove them from the lever (see the figure).
• then the damper spacer bushing is removed;
• the floor upholstery moves;
• the bolts that secure the cover covering the hole are unscrewed;
• the lever is removed simultaneously with the foam rubber seal;
• the receiving pipe is removed from the device releasing gas;
• we climb under the car;

Read the latest news from the world of sedans here, you will learn everything about tuning here.

• the starter is removed;
• the “cross” is removed;
• the support cross member of the power device is disconnected;
• it is necessary to remove the flexible shaft, which is connected to the speedometer drive;
• The hydraulic drive cylinder must be separated from the crankcase. Important! The hose attached to it does not need to be touched;
• remove the bolts securing the clutch housing cover using a ten key;
• it is necessary to install a support under the gearbox;
• you need to take an extension cord and put it on a 19 socket type key;
• using a key and a “cross” hinge, you need to unscrew the bolts securing the cylinder block with the clutch;
• using a screwdriver that was inserted into the gap, it is necessary to press the clutch away from the cylinder;
• remove the starter from the directional bushings;
• the input shaft of the VAZ 2107 gearbox must be removed from the driven disk hub;
• we displace the primary shaft from inside the bearing ring located in the crankshaft;
• and finally, remove the gearbox from the car.

Cardan joint bearings

Bearings for cardan joints, roller, needle, cardan.

There are 2 pieces on the car.

Designation of the VAZ 2107 universal joint bearing:

• VAZ classification - 2101-2202025-01;
• According to the manufacturer's classification - 904902K5S14.

Note! Designation of a bearing without a cross.

Cardan joint bearing dimensions:

• Outer diameter D - 23.8 mm;
• Inner diameter d - 14.7 mm;
• Height h - 13.1 mm.

Rear axle drive gear bearings

The VAZ 2107 passenger car has two rear axle drive gear bearings: front and rear.

Rear axle drive gear front bearing

The front bearing of the rear axle drive gear is roller, bevel.

Article number of the front bearing of the drive gear of the rear axle VAZ 2107:

• Designation VAZ - 2101-2402025;
• Manufacturer's designation: 6-7705U.

Dimensions of the front bearing of the rear axle drive gear:

• Outer diameter D - 57.15 mm;
• Inner diameter d - 26 mm;
• Height h - 17.46 mm.

Rear bearing of the drive gear of the rear axle VAZ 2107

The rear drive gear bearing of the rear axle is roller, tapered.

Designation of the rear bearing of the drive gear of the rear axle 2107:

• VAZ classification - 2101-2402041;
• The designation of the bearing plant is 6-7807U.

Dimensions of the rear bearing of the rear axle drive gear:

• Outer diameter D - 73 mm;
• Inner diameter d - 35 mm;
• Height h - 27 mm.

Procedure for bearing replacement

To get to the faulty unit, you will have to remove the gearbox, clutch and flywheel. Carry out similar work on a lift, pit or overpass, using a special crankshaft bearing puller (a device for pressing out of blind holes).

Crankshaft bearing puller

The replacement procedure is as follows:

1.First, disassemble the crankshaft bearing removal tool into its component parts, otherwise you will damage the thread when installing it. After this, lubricate the conical protrusion on the puller bushing with engine oil or grease - this will protect its surface from damage.

2.Install the press-out spacer sleeve into the inner race of the bearing and drive the device in until it stops.

3.To remove the bearing from the crankshaft, do the following. First tighten the puller screw by hand. Then, holding the press-out sleeve from turning with a 14-point open-end wrench, tighten the screw with a 17-point socket. Resting against the blank wall of the hole in the crankshaft flange, the shank of the device moves out of the coupling, pushing it along with the bearing out of the socket.

4. Having removed the damaged part, wipe the seat in the crankshaft from dust and lubricate it with engine oil. Don’t forget to check and, if necessary, replenish the amount of lubricant in the new bearing - manufacturers often sin with excessive efficiency.

5. When installing the new VAZ 2107 crankshaft bearing in place, make sure that it does not warp. The final pressing is carried out with a hammer and a suitable mandrel. If one is not found, then use the dismantled unit or hammer the bearing with a hard rubber mallet.

6.Installation is complete when the top plane of the bearing is flush with the flange.

If you are unable to find a press-out, do not despair. Every experienced auto mechanic knows how to remove a bearing from a crankshaft without a tool. In this case, you will need: a drift with a diameter of 15 mm (you can use a suitable bolt) and plastic material - lithol, plasticine or bread crumb mixed with sawdust. It is placed through the opening in the inner race in such a way as to fill the space under the bearing. Then a drift is inserted into the hole and hit with a hammer. Expanding to the sides, the soft mixture squeezes the bearing out. This way you can replace the faulty unit and avoid troubles in the future.

Something else useful for you:

Rear axle differential bearings

VAZ 2107 passenger cars are equipped with two identical rear axle differential bearings, on one side and the other. Both of them are roller, conical.

Rear axle differential bearing designation:

• According to VAZ classification - 2101-2403036;
• According to the bearing plant classification - 6-7707U.

Rear axle differential bearing dimensions:

• External diameter D - 62 mm;
• Internal diameter d - 33 mm;
• Height h - 16.5 mm.

We are studying the gearbox design to change the input shaft bearing

Before changing the bearing, familiarize yourself with the design of a four-speed gearbox (in a five-speed gearbox, the arrangement of the primary ball bearing is similar). Position No. 4 must be replaced; to do this, you first need to dismantle the gearbox.

• A set of spanners or ratchet heads;
• Two wide flat-head screwdrivers;
• Round nose pliers;
• Hammer, vice, wooden block.

How to remove the gearbox and input shaft bearing on a VAZ 2107

The operation of replacing or dismantling the gearbox is carried out in a pit or on a lift; in exceptional cases, use strong supports with a jack, but this is not safe. Stops are installed under the rear wheels, and the handbrake is engaged with a neutral gear. To make the replacement safe, disconnect the negative terminal from the battery and perform further operations according to the instructions.

1. We remove the cardan from the gearbox and coupling; read how to do this in the article on replacing the VAZ 2107 suspension bearing.
2. Now we dismantle the exhaust (reception) pipe of the manifold; it is held on by three bolts.

Toothed belt tensioner bearings

The bearings of the toothed belt tensioning mechanism are ball, angular contact, double-row, closed. There are 2 pieces installed on the car.

Names of bearings of the toothed belt tensioning mechanism:

• According to VAZ classification - 2105-1006124;
• According to the bearing plant classification - R70-6120.

Toothed belt tensioner bearing dimensions:

• External diameter D - 37 mm;
• Internal diameter d - 25 mm;
• Height h - 17 mm.

Coolant pump bearings

Coolant pump bearings are ball, radial, double row, sealed.

Coolant pump bearing designation:

• According to VAZ classification - 2101-1307027 or 2101-1307027-0];
• According to the bearing plant classification - 6-330902С17 or 6-330902 EC 17.

Toothed belt tensioner bearing dimensions:

• External diameter (D) - 30 mm;
• Internal diameter (d) - 16 mm;
• Height (width) (B) - 115 mm.
• The width of the outer race (C) is 39 mm.

Steering gear worm bearings

Bearing of the upper support of the steering gear worm

Bearing of the upper support of the steering gear worm, ball, angular contact

Designation of the upper support of the steering gear worm:

• According to VAZ classification - 2101-3401122 or 2101-3401129;
• According to the bearing plant classification - 996905-01 or 996805-97.

Dimensions of the upper support of the steering gear worm:

• External diameter (D) - 47 mm;
• Internal diameter (d) - 28 mm;
• Height (width) (B) - 13.40 mm.

Steering worm lower bearing (lower support)

Bearing of the lower support of the steering gear worm, ball, angular contact

Designation of the lower support of the steering gear worm:

• According to VAZ classification - 2101-3401123 or 2101-3401129;
• According to the bearing plant classification - 996905-01 or 996805-97.

Dimensions of the lower support of the steering gear worm:

• External diameter (D) - 50 mm;
• Internal diameter (d) - 28 mm;
• Height (width) (B) - 20.20 mm.