VAZ 2101 gearbox problems and do-it-yourself repairs

The VAZ 2101 is equipped with a gearbox that differs in operating time. Thanks to it, effective control of the machine is noted. The VAZ 2101 gearbox provides dynamic acceleration.

It should be noted that the VAZ 2106 is equipped with a transmission as standard: 4-speed or 5-mortar. It should be noted that in addition to manual transmission, vehicles may have automatic transmission.

The Zhiguli gearbox is distinguished by its small dimensions. Among the main elements of the device, it is worth highlighting three shafts (primary, secondary, intermediate).

The gearbox input shaft oil seal is distinguished by its compact dimensions. Moreover, it is designed for a long service life. The variable gear ratios of the VAZ 2101 gearbox allow the car to effectively move along the road at different speeds.

Box gears have straight and oblique teeth. There are synchronizer rings, thanks to which the machine is easy to control and speeds can be changed quickly. The box on the VAZ 2101 is connected to the power plant through the clutch.

The transmission includes a linkage that provides connection between the gear shift lever and the rod-shaped rod. The average service life of this spare part is 100,000 km.

The combinations of gear ratios of the VAZ gearbox provide the vehicle with the proper traction at 1 stage and maximum acceleration at 4.

Troubleshooting speed box 2101

Despite the long service life of the high-speed gearbox, this unit requires periodic maintenance and care. Among the causes of device breakdowns when it is necessary to disassemble it, it should be noted - poor gear engagement. In this case, you need to inspect the cylinder and seals. Also, the car owner should check the level of the existing working fluid in the tank. In addition, synchronizers are subject to diagnostics. When they are deformed while the engine is running, changing speed modes occurs with difficulty. The best option is to replace worn parts.

It is advisable to repair the gearbox on a VAZ 2101 if the gear is knocked out. As a rule, this manifestation is due to the fact that the teeth of the gearbox gears have become unusable, the springs and bearings have worn out. Premature deformation of these mechanisms is due to the fact that trips were often made in difficult conditions.

Manifestations such as noise at the 2101 gearbox are a consequence of insufficient oil in the system or the driver uses low quality fuel. Because of this, all components related to the gearbox suffer. Failure of the synchronizer and wear of the clutch basket also contribute to the appearance of noise from the gearbox, and a characteristic crunch may be noted when changing gears.

If any of the above occurs, driving is dangerous. That is why it is worth repairing the VAZ gearbox.

Design features

The VAZ-2101 gearbox diagram shows that the entire assembly consists of three shafts, which are placed in the gearbox housing. Despite the large number of components, the gearbox is relatively compact. Note that this diagram is not complete, since the sliders, latches and shift forks are not visible on it. They are located in the crankcase on the other side of the gearbox.

The input shaft receives torque from the crankshaft. To ensure the possibility of disconnecting the gearbox from the power plant, this connection is not made directly, but through the clutch mechanism. To ensure connection with the driven disk of the clutch mechanism on the first. The shaft is splined.

The primary shaft is fixed on 2 bearings. Moreover, one of them (the front one) is located in the crankshaft, and the gearbox shaft is inserted into it with its end switch. The other is located in the front of the crankcase.

At the second end of the first. The shaft has a gear, and the shaft itself is made integral with it. This gear has a constant clutch with the industrial gear. shaft To prevent oil leakage, the rear bearing of this shaft is covered with an oil seal.

Front end sec. shaft enters the primary. To eliminate axial displacement and maintain their alignment relative to each other, the secondary shaft is mounted on 3 bearings. The front one is of a needle type, installed in the hole in the front end. shaft, where the second limit switch enters. shaft

The second bearing is intermediate, it is a ball bearing and it is installed behind the 1st stage gear. The third is also a ball-shaped one, located on the back of the second. shaft in the crankcase cover.

Below these shafts there is another one - an intermediate one. At the same level with it there is a mechanism that ensures the car moves backwards.

How to remove the gearbox?

Before you begin removing the gearbox (2101) from its original location, it is worth preparing in advance the appropriate tool required for this work. In particular, this is a set of socket wrenches, sockets with extensions of different sizes, screwdrivers, and pliers. Additional materials include rags.

The VAZ gearbox can be removed as follows:

1. Vehicles must be placed in a viewing hole.
2. The negative terminal from the battery needs to be removed and the rear exhaust system mount needs to be disconnected.
3. Using a screwdriver, remove the gearshift lever.
4. The clamp and the transmission exhaust pipe must be dismantled (fixed with nuts).
5. The fasteners of the crankcase and clutch are unscrewed, the spring is removed from the fork, and the cotter pin of the pusher axle is removed.
6. The driveshaft safety bracket, the speedometer cable from the drive, and the elastic coupling must be dismantled.
7. To remove the coupling, it is advisable to use a special clamp.
8. It is necessary to unscrew the starter mount to the clutch housing.
9. Carefully remove the clutch housing cover and the gearbox cross member.

Finally, the box is dismantled along with the clutch. Next, the device must be disassembled. This allows you to determine which components have been worn to the limit and need to be replaced. Corrosion, chips and cracks are unacceptable. For self-repair, a diagram of the box is required. Installation of a 5-speed gearbox on a VAZ should be done in the reverse order.

A little about the principle of operation

The input shaft gear, as well as four industrial gears. shafts are made integral with the shafts. And only on the secondary shaft can the gears move along the shaft. This ensures the possibility of engaging the necessary gears.

Related link:

The device of the ignition system of the VAZ 2101

In “neutral,” torque is transmitted from primary. shaft to the intermediate one through gears having constant mesh. But on the second. the shaft does not undergo this rotation, since in this position the engagement between the gears is industrial. and sec. there are no shafts.

The driver, engaging first gear, using a shift fork mounted on the slider, moves the 1st stage gear of the second through the synchronizer. shaft and engages it with the gear on the industrial. shaft

All other steps are switched on in approximately the same way. To prevent the inclusion of two stages at the same time, the driver, before turning on the required speed, first disengages the gears of the engaged stage, that is, first moves the lever to “neutral”, and then connects the necessary gears.

In order for the meshed gears of the second. the shafts have not returned to their original position due to axial force, clamps are used - special spring-loaded balls, which, once in the recesses on the slide, do not allow it to move back.

In order to ensure rotation of the second. shaft in the opposite direction (reverse movement), the design of the gearbox includes an additional intermediate axle with a gear, which is connected to the gears of the intermediate and secondary shafts using a separate fork.

In general, the entire operation of the VAZ-2101 gearbox is based on the interaction of gears of different diameters, assembled in one housing and mounted on shafts, which allows you to change the gear ratio in the desired direction.

Article on the topic - Removing the gearbox

Selecting fuel for the transmission system

The manual transmission of the VAZ 2106 is not demanding on fuel. The need to replace the fuel and lubricant arises after the second year of operation. As a rule, oil marked 80W-90 is used. You can change the fuel yourself. To do this, you should arm yourself with a wrench and a hexagon.

It is recommended to check the oil level of gearbox 2101 every 15,000 km. The fuel volume in the crankcase does not exceed 1.4 liters. The fuel needs to be replaced after 40,000 km.

To drain the oil from the gearbox, you need to prepare an empty container, rags, and a hex key in advance. The work is done on a warm engine. The drain plug is unscrewed using a key. Taking this into account, it is necessary to substitute an empty container in advance for draining the transmission. As soon as the liquid has flowed out, the drain plug is screwed in (previously cleaned of settled contaminants). Next, you can begin refueling the gearbox with new fuel. This procedure is carried out using a special syringe or funnel to which an elastic hose is connected.

VAZ replacement scenes.

Sports

We noted that for the VAZ 2114 you can install a sports short-throw rocker. Outwardly they are quite similar, but the difference in work is felt immediately. On a sports unit, gears shift faster and smoother. It's all about the design of the backstage itself. Unfortunately, it is precisely because of this that the process of independent replacement becomes almost impossible.

If you decide to install a short-throw rocker on your VAZ 2114, contact trusted car services, or even better, a studio that specializes in tuning. Such events are classified as technical improvement, which is why no one understands this better than tuning specialists. Even official AvtoVAZ car services.

Adjustment

Now let's talk about how you can adjust the link if it shows primary signs of malfunction.

1. First of all, try by hook or by crook to engage first gear.
2. Place the car on an overpass, turn on the handbrake, place additional supports under the wheels to avoid the car moving.
3. Do not turn off first gear on the transmission.
4. At the bottom, find the clamp that holds the rocker and secures it. To do this you will have to crawl under the hood. You shouldn't have any problems finding the gearbox. The clamp needs to be loosened.
5. Now return to the salon. Your task is to move the box lever as far as possible to the left. If you start to pull the handle forward or backward, the drawstring will most likely come off. You don't need it.
6. Get back under the car and tighten the clamp back.
7. In many cases, simply shifting the rocker relative to the cardan shaft by literally a few millimeters is enough.

When adjusting, pay attention to the condition of the cardan shaft. It may require replacement if worn out

Work is in full swing

What kind of gearbox can be installed on a VAZ 2107

Initially, the “Seven” was produced with a “four-speed”, so you can install any VAZ gearbox from rear-wheel drive “Zhiguli” on it. You should know what functions the car will perform. If you use it as a workhorse, carry loads, pull a trailer, then a four-speed gearbox will do. It is more durable and resistant to variable loads. If high-speed driving on highways is necessary, then a five-speed gearbox is suitable.

It is possible to install boxes from foreign cars.

The best option is a box from an Italian Fiat model, since this is a prototype of our VAZ.

You can also install it from an early model BMW, but for installation you will have to redo the fastenings.