Do not switch gears on the engine: possible malfunctions

The car consists of many nodes and mechanisms. That the energy of the torque has passed into action, and the car has gone, it is necessary to use the gearbox. But sometimes there is a situation where it is difficult to turn on the gears on the engine. What could be the problem? Today we will try to answer this question.

VAZ or foreign car - is there a difference?

To begin with, we note that the principle of operation of the main nodes for all cars is the same. And such a malfunction can happen to anyone, be it a foreign car or a domestic car. The only difference is the type of drive. On rear-wheel drive vehicles, the lever is connected directly to the gearbox. On front-wheel-drive cars, the engine is located transversely to the body. Therefore, to activate the box, a wedge or a cable drive is used. On the latest models of VAZ (including the "Kalina" and "Vesta") it is the latter type of drive that is used. He is more reliable, but he also has problems. If the transmissions on the engine are not included ("Niva" including), do not panic and take the car to the service. Probably, the reason consists in banal malfunctions which can be eliminated independently.

Thrust and wings

If you have a front-drive domestic car (nine, "Priora" and so on), and the gears on the engine are tight, it is worth paying attention to these two parts. Often when you start from the site, the gearshift lever begins to jerk violently (especially in the Lada Samara family of the first and second generations). Kulis flies out of the fastenings. As a result, the gears on the engine are poorly switched on. The way out is to replace the elements with new ones. But it's worth doing only if you really were convinced of the malfunction of the wings, looking under the bottom of the car.

Cable

If you have a more modern car, the problems can be in the cable drive. On such machines, the box lever does not have a link and is not inserted into the transmission. If the cable breaks off, the transmissions on both the wound and the muffled motor are not switched on. This is the main sign of failure. The output is a complete replacement of the transmission cable. The benefit is it is inexpensive.

Pillow of fastening DVS

Strangely enough, but this malfunction can significantly affect the quality of the work of the checkpoint. And because of bad cushions do not turn on the gears on the engine that is started with both MKPP and "automatic". On some cars, separate supports for the box are installed. Check their integrity and replace if necessary. Check is very simple - the motor should not jerk from side to side with increasing speed and idling. If the cushions "sagged", the motor will break the link or will seize the primary shaft.

Fork

Now we will consider more complex malfunctions, because of which the engine does not turn on transmissions. UAZ is also susceptible to this breakdown, so you should not disregard the fork. So, on the majority of rear-wheel and four-wheel drive vehicles are switched on by means of hydraulics. When the driver presses the clutch pedal, a squeeze piston is triggered, which pushes the fluid under pressure. As a result, the plug is removed to the side, and the disc - is disconnected. Inspect the condition of the plug itself and check the system for leaks. If the tank constantly goes off the level (by the way, the clutch is used "brake"), perhaps, the anther of the clutch slave cylinder has torn . Because of this, we get an incomplete squeeze fork. The latter also sometimes breaks down, especially on "GAZel". This case looks like this: This indicates that the plug was not of the best quality and should be replaced. When buying such responsible elements, it's not the price, but the quality that matters. Do not give preference to cheap analogs. Repair can take you a lot of time and effort. On front-wheel drive machines, a gearbox must be removed to replace the fork.

Squeeze

In the design of the clutch system, a special release bearing is provided . It is he who picks up the petals of the basket under the influence of the hydraulic drive (when you press the pedal). This bearing disconnects the drive from the basket and flywheel. As a result, the motor runs separate from the box. If you release the pedal, the element will reconnect the two nodes. The torque will be transmitted as the dry disk contacts the flywheel. If the transmissions on the engine are not switched on, the release bearing is likely to become unusable. What are the signs of a malfunction? Determine the performance of the bearing can be "by ear". To do this, gently press the pedal and then release it. No noise should not be, whether it's off or on the clutch. Also note that to replace the squeeze (even on the rear-wheel drive cars) will have to completely remove the box with the "bell". This element is set as shown in the photo below. After the replacement, noises should disappear. But if, even after this, the transmissions on the engine are not switched on, it is necessary to inspect the clutch basket itself .

Basket

Such an element is installed on all cars with a mechanical box. As for the "automatic", then there is a hydrotransformer or in the common people "bagel". So, why do not the transmissions on the engine start? Over time, wear of the petals of the clutch basket occurs. They buckle or break. As a result, the transmissions on the engine are not included. Inspect the state of the element visually. If the petals are damaged, then the element must be replaced. But this is not the last reason why the transmissions on the engine are not included. If the speeds are tightly turned on, and the car shakes at the start, the whole fault is the worn clutch disc. The element looks like this: So it looks like a new element. After 100 thousand kilometers, it will acquire a slightly different appearance. If the disc is worn out, burned or springs flew out, it should be replaced. By the way, there is also output on the flywheel, but it is not so significant.

How often does the clutch disc change?

There is no specific regulation here. The resource of the clutch disk is a subjective concept. It all depends on the loads - whether you used the trailer, how much the car was overloaded and how often they got stuck with the wheels slipping. Every blow from the flywheel is on the clutch disk, because its main task is to transfer the torque, and do it as smoothly as possible. The resource can be from 30 to 200 and more than thousands of kilometers. The service life depends on the driving style and the vehicle's load conditions.

Synchronizers

If these elements are faulty, the transmissions can be switched on, but with great effort and with a characteristic crunch (as on the 53rd Gazon). The synchronizers themselves are soft gears, which smooth out the angular velocity of the shafts. Usually elements are made of copper and brass, therefore are subject to deterioration. As far as output is concerned, the transmissions will turn on more and more complicated, up to the use of a double squeeze with gas permeation.

Transmission shafts

This is one of the most rare causes, but it should not be ruled out. So, the transmission shafts themselves fail. For example, the second or fifth gear does not turn on. Determine the degree of wear can only be after the dismantling of the transmission and full opening of the elements. The shafts are not turned, but are changed to new ones. That's all.

Conclusion

So, we found out why the transmissions on the engine are not switched on. As you can see, most problems can be identified and eliminated with their own hands. The main thing is to determine the failure in time and eliminate it, otherwise you risk getting to expensive repairs.