VAZ gearbox repair. Box 5-mortar exchange and installation, used. VAZ gearbox

• What kind of gearboxes are there?
• Specificity of manual transmission VAZ
• Types of gearbox breakdowns
• Transmission diagnostics, gearbox repair and replacement
• How to increase the life of the gearbox on VAZ cars?

After the invention of the internal combustion engine, the gearbox for cars was invented. The purpose of this device is to change wheel speeds and transmit torque within greater limits than the engine can provide. The gearbox ensures optimal engine operation at different vehicle speeds.

What kind of gearboxes are there?

• With manual mechanical gear shifting, the driver switches the gear himself.
• Automatic - depends on external parameters (engine speed and engine load). In such gearboxes, gears are switched automatically, and the control system operates without driver intervention.
• A robotic (similar to an automatic) works practically like an automatic transmission, but is controlled by a computer.

Exchange of a VAZ 2106 4-mortar gearbox for a 5-mortar
- 5500 rubles

We will only consider boxes with mechanical gear shifting, abbr. 5-speed manual transmission is the most common; 6-speed manual transmissions are less common. Trucks even use 8-10-12 speed gearboxes. Boxes are sometimes called transmissions.

Checkpoint not working: looking for solutions

The transmission largely determines safety and driving comfort. Its serviceability must be strictly monitored. The most common sign of problems with the mechanics of a VAZ is knockout of gearbox steps. This defect occurs very often. Many continue to travel with him for a certain time. But such experiments are fraught with serious consequences.

Firstly, gearbox defects are layered on top of each other. The transmission problem progresses very quickly. It’s not far from a vehicle stopping in the middle of the road. Not the best prospect, you will agree.

Increased loads on the transmission unit provoke more serious damage to the mechanics. Driving with a defective gearbox often leads to failure of the latter. Of course, you can buy a gearbox for a VAZ 2107 (5-speed ) or a unit for a car of another model, quickly replace the unit at the nearest service station and drive on. But how profitable will such a solution be?

New box to replace the broken one

VAZ 2107 gearboxes in Moscow are offered at different prices. The wide price range is due to the specifics of the sale of units. You can buy a new box for the seven or another model of Zhiguli in a regular auto parts store, a specialized online store, or directly at a service station.

Everyone chooses their own way to purchase a new unit. But you shouldn’t count on significant cost optimization in such cases. If you are offered a gearbox for a VAZ 2106 (5-speed), the price of which is too low compared to the market average, this is a serious reason to be wary. And it doesn’t hurt to remember the folk wisdom about the location of free (in this case cheap) cheese.

Specificity of manual transmission VAZ

VAZ cars use a three-shaft gearbox with a classic arrangement of shafts (primary, secondary and intermediate).

• The primary (aka drive) shaft is connected through the clutch to the engine flywheel.
• The secondary (aka driven) shaft is permanently connected to the driveshaft or drives.
• The intermediate shaft is designed to transmit torque from the primary shaft to the secondary shaft.

On the input shaft there is a drive gear that transmits rotation to the intermediate shaft. On prom. The shaft contains a gear block. On the secondary shaft there are driven gears on the splines of the shaft and move along it, or rotate on the hubs, then their longitudinal movement along the shaft is excluded, then the gears are switched by a sliding clutch equipped with a synchronizer. Sports manual transmissions often use dog clutches.

Technical characteristics of manual transmission

In the operating instructions, the technical characteristics of the box are indicated together with the characteristics of the transmission. This is given in tabular form:

Types of VAZ gearbox breakdowns

Here are the main types of faults in manual transmissions:

1. noise in a used gearbox when the neutral position is engaged may be caused by high wear on the drive shaft bearing or low oil level;
2. noise (crunching) when the gears are engaged occurs as a result of wear of the synchronizer or clutch. The box mounting bolts may be loose or the clutch may not be disengaged;
3. noise during operation of the box occurs due to wear of some bearings, deterioration of synchronizer clutches, or low/no oil level;
4. Difficulty shifting gears occurs due to wear of synchronizer couplings, gears, low oil level, under-disengagement of the clutch, damage to the traction, loosening of the gearbox to the car body.
5. spontaneous gear disengagement can be caused by loosening of the gearbox, jamming of the drive rod, wear of the synchronizer clutches and the synchronizers themselves, wear of the gears or shift rod, shift fork, and may also be due to wear of the intermediate shaft bearings;
6. Oil leakage usually occurs due to wear of the oil seals or loosening of the gearbox threaded connections.

Difficulty switching

Now let's briefly look at other faults. Difficulty shifting gears will be next.

The reason for this may be:

• Wear of the switching mechanism or its deformation (scenes);
• Wear, the appearance of burrs on the gear shift axles or on their seats, jamming of the crackers;
• Damage or wear of the splines of the synchronizer sliding couplings;
• Damage and bent shift forks;

In the first case, to restore functionality, you don’t even need to remove the transmission from the car, since replacing the VAZ-2105 gearbox shifter is possible without dismantling the transmission unit.

To do this, it is enough to remove the lever, boot, and plastic protective cover to provide access to the fastening elements of the switching mechanism, which must be unscrewed in order to remove the mechanism assembly. And then it is replaced or repaired.

Important! In a 4-speed gearbox, a tension spring is attached to the rod from inside the crankcase, which ensures a constant position of the lever opposite 3-4 gears and prevents its vibration. Therefore, when removing the mechanism, you should first lift it a little, and then pry the spring with a hook made of steel wire, remove it from the eye of the rod and hold it in a slightly tense position so that it does not fall into the crankcase. Before installing the new link, use the same hook to hook the spring and install everything in place.

As for other breakdowns that make it difficult to engage the gears, you will have to remove the gearbox, disassemble it, identify the worn or damaged element and replace it.

Transmission diagnostics, repair and replacement of VAZ gearbox

As for diagnosing the operation of a used VAZ gearbox. then in some cases it can be done independently, but in most cases it cannot be done without a specialist. By the way, we will diagnose the box for free and identify the cause. Often the reason lies not in the box itself, but for example in the gearbox, clutch, traction, etc. What can dishonest repair shops take advantage of? That's why we always ask clients what the problem is and do the diagnostics ourselves.

After diagnostics, we offer repair of a VAZ gearbox or other unit that has failed. Repair of gearboxes in our specialized workshop is carried out by craftsmen who repair exclusively manual gearboxes, which eliminates possible errors in assembly and disassembly. The cost of repairs is always fixed and depends on the model of your VAZ:

From the price list for VAZ gearbox repairs , it can be seen that the cheapest repairs are gearboxes for VAZ 2101 -2105 - 2107 and 2108, 2109. Gearboxes for VAZ 2110, 2112, 2114, 2115 and Kalina with Priora are more expensive to repair. The highest price tag is for the repair of Largus, Granta and New Kalina cable gearboxes.

To save time, we have an “ express exchange of VAZ gearboxes ” for popular VAZ models. The price for replacing the gearbox is shown above. The exchange takes place an hour and a half faster than repairing the box.

All transmissions and transmissions we repair and exchange have a one-year warranty.

Transmission replacement occurs as quickly as possible and usually takes 2-3 hours. The replacement time is indicated with installation. If you need to exchange without installation, then it’s generally quick, bring the removed box to us, and we will give you a whole and fully working one for a fixed fee.

If you nevertheless decide to repair your gearbox, then we will do this as quickly as possible at “Express Transmission Exchange” prices, including spare parts.

Oil leaks

The last common cause is a lubricant leak. This can happen through loosely screwed plugs or a damaged bottom cover gasket. But most often it is the input shaft seal that leaks.

In the first case, the problem can be eliminated simply by pulling the plugs or replacing the gasket. And for this you do not need to dismantle the gearbox from the car. But in the case of a leak in the input shaft oil seal, you will have to remove the box, but you won’t need to disassemble it to replace the damaged rubber element as a whole.

Replacing the gearbox oil seal, if it concerns the input shaft, is not difficult. It is located in the clutch housing, but from the inside, that is, it will have to be disconnected from the gearbox housing. And then the damaged oil seal is removed and a new one is installed.

Then everything is put back together. In case of damage to other seals, the gearbox is disassembled and the damaged element is replaced.

How to increase the life of the gearbox on VAZ cars?

Without a gearbox repairman

You can get by if you use the gearbox carefully, because it is designed for a long service life and high mileage of the car. The owner of his car needs to monitor the oil level in the gearbox; if it is low, it is necessary to add it to the level on the dipstick or control hole. Sometimes you need to completely change the oil. The period for changing the gearbox oil is indicated in the vehicle manual, but for better performance you can change it every 50-60 thousand km. mileage The rapid wear of mechanical transmission components is affected by aggressive driving by the driver and rough gear shifting. Therefore, it is quite possible to extend the “life” of the box on your own and with a sensitive attitude towards the car, but who, where, and in what ways will serve you depends only on you.