VAZ-2114, gearbox: device and repair

On vehicles VAZ-2114 the transmission system is arranged quite simply. The Lada-Samara series is a front-drive car. There is a VAZ-2114 clutch, a gearbox and a drive mechanism for the driving wheels. The clutch system is clear to all. But the design of the gearbox is not understood by everyone. Let's see what the checkpoint is, what are the failures, how to maintain and repair it.

Device checkpoint VAZ-2114

To ensure that the engine can work in optimal conditions when driving in different conditions, cars are equipped with gearboxes. This mechanism is able to change the amount of torque that is transmitted from the power unit to the driving wheels at the moment of starting from the place or at the time of speed dialing. The mechanism consists of several basic elements. This set of rotating shafts and gears, transfer links.

The body of the mechanism includes a clutch housing, a transaxle case, a rear cover. Inside the mechanism is the main pair. There is a differential and gears, due to which the gear ratios change. This car used a slightly modified mechanism, which remained with the VAZ-2108. The difference is in the other main pair.

In the checkpoint - this is the main transmission or the main, primary shaft. It is designed to reduce the engine speed. The main gear can reduce the number of revolutions in the proportion of 1 to 4. Thus, if the engine speed is 2 thousand, then the rotation frequency of the main pair will be 500 rev.

On the VAZ-2114, the gearbox in the main pair has a standard figure of 3.7. This figure is stable. But if you change it, you can correct the dynamic characteristics of the car.

The maximum speed and overclocking capabilities depend on the size of the main pair. It is this element that affects the transmission length. If you change the main pair, you can adjust the length of all the gears. The acceleration and the maximum speed also change.

At VAZ-2109 the main pair is 3.9. Due to this, the maximum speed on this car is lower, but the car accelerates better.

The VAZ-2114 transmission is a five-speed, mechanical, synchronized gearbox. The main transmission is connected with the differential node. Gear gears from the first to the fourth are made in the form of a block and are planted on the primary shaft of the box. The fifth block of driving gears is planted. At the VAZ-2114, the gearbox also has a secondary shaft. It is equipped with driven gears. The shaft itself is connected to the drive gear by means of the main pair.

Gear Ratios

The second, no less important component of this box is the gear ratios. These are gears, each of which is responsible for a particular transmission. What does the transmission ratio have on the VAZ-2114 cars? Below is the characteristic of each speed:

• The first transfer is 3,636.
• The second is 1.95.
• The third is 1.357.
• The fourth one is 0.941.
• The fifth is 0.784.
• The rear gear is 3.53.

It should be noted that the standard transmission range is far from ideal. The first gear is too short, the second is very long. Because of this, drivers can observe a dynamic failure, if abruptly switch from the first gear to the second.

And even more - in addition to the failure with sudden switching wear synchronizers. Look at what the gearbox looks like on the VAZ-2114 - there is a photo in our article.

Kulis

The checkpoint is also equipped with a turnstile.

This is a special mechanism by which the driver switches from one transmission to another. The design of the wings was developed back in the 80's, so there are a lot of different drawbacks. Most drivers blame her for low informativeness when switching. Transmissions are not always included the first time. Kulis sticks, or the transmission does not go well.

The speed of switching depends on how long the part is. For example, in sports cars, the wings are shortened. This makes it possible to solve a lot of problems with switching and adds dynamics. In order to improve information and controllability, the wings have long been replaced by a cable. With him the checkpoint is working more clearly. You can easily turn on the necessary gear.

Also, the drive control box is equipped with a lever toggle, a pull rod and a ball bearing, a rod to select the desired gear, a mechanism for selecting speeds.

Typical malfunctions and their symptoms

Transmission VAZ-2114 production AvtoVAZ has a fairly high resource. But sometimes some components of the mechanism can fail. Consider the typical malfunctions and their symptoms. We will also find out how repairs are done.

The transfer takes off at start-up and is not fixed

The reason for this problem is in the worn gear teeth of the gears and the coupling. This often happens if the driver tries to switch gears without observing the speed limit. To eliminate this trouble, it is necessary to replace damaged and worn parts. If the gears are switched on by themselves, then the cause is in wear, laminations or in cracks on the rubber part of the rear support.

Transfers are included with effort

In this case, experts are sure that the teeth of the attachment to the hinge have loosened.

Deformation or damage to the thrust is also possible. The case may be in the cracks in the plastic parts in the gearbox drive.

Noise in neutral transmission

If the car VAZ-2114 gearbox is very noisy in neutral transmission, this indicates a low oil level in the gearbox, as well as the quality of the oil poured. In addition, a similar symptom is observed with a strong wear of the upper bearing, which is on the primary shaft. To eliminate this fault, you will need to diagnose the bearing and also top up the oil level.

Crunch and crack when switching

When you switch, the driver will hear a crunch when the synchronizers of the gearbox are worn out.

If you miss the beginning of this process, then in the future operation it will be necessary to replace not only the damaged synchronizer, but also the gear unit completely. If there is a crack at the moment of switching, this indicates the wear of the locking ring of one of the synchronizers or the axes of the satellites. It is urgent to carry out diagnostics.

Noise when driving in gears

If the gearshift is noisy when driving, there may be several reasons. This problem consists in the wear of both the upper and lower bearings. In addition to noise, there are problems with wedging the shift lever. In this case, a diagnosis is necessary. At dismantling of a check point on VAZ-2114 the box of safety locks is under a cowl. It is located in a special block.

A good oil is the reliable operation of the gearbox

Whatever was simple and unpretentious at the VAZ-2114 gearbox, the oil for it should only be selected for quality. Experts believe that the most optimal option is mineral gear lubricant. You can also use synthetic products. In the case of synthetic oil, periodic cleaning of the packing glands of the box is necessary. Facilities of the category GL-4 are suitable for boxes of the Samara-2 series. To ensure that the transmission is as reliable and uninterrupted as possible, the oil level must be constantly checked.

The easiest way is to use a feeler gauge.

Conclusion

The gearbox is a complex mechanism that requires proper maintenance. Then the transmission will serve the owner for the entire service life.