The perforator is poorly turned on the rear gear.

For what reasons are the transfers on a manual gearbox poorly included

The cause of fuzzy inclusion and extraneous sounds when changing the gears does not always lie in the checkpoint itself. Much more often transfers are poorly switched due to wear/clutch breakdown, backlash in the mechanism of selection of steps. In the article, we consider the common malfunctions provoking transmission problems, and methods for their diagnosis.

The box “crunches” when switching

Crime is a characteristic extraneous sound that occurs when gear. The reasons for this phenomenon:

• the clutch malfunctions and the drive of it is turned off, due to which, when the pedal is squeezed, the driven disc remains in the hook with the flywheel (often in such cases they say that the clutch “leads”). Sounds when switching gears are often accompanied by a tight stroke of the backstage, so to change the steps you need to make a fairly large effort;
• insufficient amount of oil in the gearbox;
• incorrect adjustment of the cable clutch cable drive;
• wear of synchronizers in the gearbox.

Why on a car with manual transmission sometimes the rear gear does not turn on

Transmission. one of the most mysterious elements in the car. It seems especially strange and unusual to those people who have small experience with vehicles. It seems that everything is so simple. squeeze the clutch, push the handle and the car rides. And what to do if two steps are successful, but the car did not go? That is why, when something happens to the gearbox, for example, the rear speed stops working, you can break your head before you find the reason.

Imagine the situation. The motorist got into the car and found that he did not work in the rear gear, what to do then. First of all, you need to determine how serious a malfunction. To do this, you need to analyze the transmission behavior in the last week. If there were no problems before that, there is a hope that the issue can be solved. Consider the most common reasons for the refusal of the rear gear.

The cululus sleeve was worn out. As a rule, such a malfunction is supplemented by a loosened lever. However, if wear went evenly, then the driver may simply not notice that the cululis sleeve began to walk free. The problem is solved simply. You need to replace the sleeve. To do this, remove the cover from the lever, and then dismantle the wings and replace the plastic sleeve with a new.

Dot in electronics. Today, some cars provide electromagnetic blocking while turning on the rear gear. With this design, the wires in free swimming dangle directly under the bottom of the car. In conditions this is an unforgivable attitude. The wires can get wet and damage. As a result, the bow is lost, this leads to the impossibility of turning on the rear gear.

Mechanical damage. In some cars, the transmission location involves the use of external rods to switch gears. If the weather is bad outside, it can also stick snow, as a result, the move is much at a difficult.

Old oil in the checkpoint. Experts do not just advise replacing oil in a gearbox in a timely manner. If there is a leak, even one drop per day is enough for the whole substance to flow out after some time. As a rule, the box with this phenomenon is more noisy. But the driver may not notice this. As a result, one day you can simply not turn on the rear gear on the box.

A squeezed bearing, springs, forks, gears, shafts worn out. All these malfunctions are always supplemented by the noise when car operating. To eliminate the problem, you will need to carry out repairs with the withdrawal of the gearbox. In addition, the procedure can only be carried out with the participation of specialists.

Result. Some motorists are faced with a situation where the rear gear does not turn on on the manual transmission. This can occur for a variety of reasons. The main thing. Install a malfunction in time and repair.

Why is the back gear ceases to be turned on by car with automatic transmission and manual transmission

The transmission in the vehicle allows you to change the torque, which goes from the internal combustion engine to the drive wheels. This helps to change the speed of the car, supports the engine in a given range. In addition, using a gearbox, you can change the direction of movement. That is, the car gets the opportunity to move not only forward, but also backward. Very often, drivers are faced with a malfunction in which the rear gear does not turn on. And such a breakdown can occur on different types of gearboxes. Consider the main reasons why the rear transmission refuses.

Clutch connects the motor and gearbox among themselves. This happens at the time of switching. After the transmission is turned on, the clutch pedal is released, the clutch itself is closed, and the torque continues to be transmitted to wheels

If the rear speed stopped turning on on the gearbox in the car, the cause of this malfunction should be immediately set. Note that it is impossible to operate a car without rear gear in some cases. Start with a manual gearbox. It is in such a system that the back speed most often fails. As a rule, the first signs of a problem are a rattle, crack or crunch while turning on the rear gear. In addition, a motorist may feel that the speed has become much more difficult to turn on or through. If you ignore the above symptoms, the system at one point will just stop working.

The first reason that can explain the situation. The clutch does not turn off until the end. As you know, the clutch connects the motor and gearbox among themselves. This happens at the time of switching. After the transmission is turned on, the clutch pedal is released, the clutch itself closes, and the torque continues to be transmitted to wheels. If an incomplete clutch is turned off, the gearbox does not completely turn off the motor. And this can lead to the fact that all speeds in the car will be included with difficulty. In this situation, when trying to turn on a certain transmission, you can hear a crunch in the box or rattle. In order to eliminate the problem, you need to pay separate attention to the state of the clutch system. In addition, you can check the adjustment of this node and the quality of the pedal itself.

The third reason that can be indicated. The system needs to adjust the curtains of the gearbox

Another common reason is a low oil level in the gearbox. In addition, this can occur due to the loss of the properties of transmission oil. Practice shows that among car owners many simply do not change this consumable in the node. In fact, its replacement should be carried out every 100 thousand km. This indicator refers to situations when the car is operated in gentle conditions. If the machine is used in difficult conditions and often drives on uneven roads with constant gear shift, then the oil needs to be changed every 50,000 km.

The third reason that can be indicated. The system needs to adjust the curtains of the gearbox. In addition, we can note the deformation of the thrust or levers of the box drive. Often, it is after the diagnosis of the state of the cululis that it is possible to understand why the back does not turn on. Especially often problems arise on front.wheel drive cars. As for the thrust and drive in the gearbox, these elements must be carefully examined for damage. If necessary, they should be replaced.

Another reason. Design features of the box. Very often on budget cars, the back and the first speed are not equipped with synchronizers. Due to the lack of these elements, the device of the node itself is simplified, but difficulties arise during the inclusion of the programs. It is impossible to count such a transmission of the gearbox, it is rather a feature of the node.

Fiction problems lead to a single scenario. the programs are not included or individual speeds may disappear. To eliminate the problem, you need to change the clutches

Automatic transmission. The rear gear may not be turned on on cars with an automatic gearbox. The first reason. The level of transmission fluid deviates from the norm. In addition, this can occur due to contamination of the consumable. Note that the automatic gearbox is most sensitive to the level and quality of the oil inside. That is why it is necessary to periodically conduct verification and replacement. The second reason. wear of the friction fruits. This malfunction can affect not only the reverse, but also on the drive in drive mode. Fiction problems lead to a single scenario. the programs are not included or individual speeds may disappear. To eliminate the problem, you need to change the clutches.

In the automatic gearbox, there may be other causes of poorly turned on the rear gear. This can occur due to brake tape or worn friction layer. Among other problems, one can distinguish a break in the piston cuffs or its strong wear. If there are no certain knowledge in the field of the car, namely the design of the gearbox, when damage, you should contact the workshop. Do not self.medicate the vehicle, since in many cases it can only harm some manipulations.

Result. The failure of the rear gear in the car can occur for various reasons. Vehicles are subjected to a similar problem both with automatic transmission and manual transmission.

Why are the programs poorly switch

When transmissions are poorly switched, driving a car becomes not only unpleasant, but also unsafe. Consider the main reasons why transmissions are poorly switched or do not switch at all. And since the box of the automatic and the manual transmission differs too much, we will consider them separately.

Porvagues switches on a car with a manual transmission for three reasons. The first of them is a clutch malfunction when it does not completely turn off (leads). The first sign of this malfunction. the rear transmission is turned on with a characteristic crack. The back responds to this anomaly more noticeable than other programs, because it is the only one is not equipped with a synchronizer.

The second reason is a defect in the gear selection mechanism. And finally, the third is the excessive wear of the synchronizers of the checkpoint.

Adhesion malfunctions, in which there are also several transfers of the manual transmission:

• Bringing the hydraulic drive of the clutch turning off or leaning from it liquid. The malfunction is eliminated by replacing the failed hydraulic systems and its pumping.
• Wear or breakdown of the clutch turning off. Requires a replacement or repair of part.
• Warping (beating more than 0.5 mm) or too large the thickness of the new driven disk.
• The failure of the basket (temperature deformation of the pressure disk or its skew).
• Loss of mobility of the supporting bearing of the primary shaft of the checkpoint (in the end of the crankshaft, to which the flywheel is attached).
• Jamming the hub of the driven clutch disk on the hills of the primary shaft of the checkpoint. To eliminate the defect, clean the hubs of the hub and the primary shaft of the checkpoint. Will not hurt and lubricate them a little with a lithol.
• Too much free stroke of the clutch turning off. Its value needs to be clarified by the manufacturer, since for different cars it is slightly different. Until you recognized the value of this parameter for your car, install it from 5 to 8 mm. Too small free stroke of the fork is also undesirable, since it leads to a slip in the clutch and increased wear of the squeezer bearing.

Excessive wear of synchronizers is mainly in those programs that include more often: this is usually the first, second and third. The back does not get into this list, since it does not have a synchronizer. Когда у вас плохо переключаются передачи, а вы предполагаете, что причина тому износ синхронизаторов, во-первых, трудности с этим у вас должны быть только на ходу. Secondly, it switches in this case better if you use a double squeeze.

Those who do not know what double squeezing. To switch to increased gear: squeeze the clutch, turn on the neutral, release and squeeze the clutch again, turn on the transmission.

Backlash in such a “helicopter” is one of the reasons for the fuzzy inclusion of gears

To switch to reduced: double squeezing must be combined with exciting, that is, when the clutch pedal is released, and the box on neutrals, you need to press and release the accelerator pedal. So switch transmissions to the car, which does not have synchronizers. If the box is easier to switch using double squeezes, then the transmissions are most likely switched, most likely worn synchronizers.

If gears are poorly switched, when the car stands still with a dried engine, the malfunction can only be in the gearbox selection mechanism.

Look for a breakdown in it or check the correctness of its adjustment. Do not even think for clutch and synchronizers.

For those who have an automatic

If your car has a gearbox automatic. Knowledge of the modes in which your machine can operate will not hurt you:

• P. for parking and starting the engine. Switching to this mode is possible only after the car is completely stopped.
• R. for moving back. Switching to this mode is also possible only after stopping the car and with a pressed brake pedal.
• N. neutral. When the engine is completely disconnected from the checkpoint.
• D. forward movement without gear shifting restrictions (most often used operating mode of the checkpoint of automaton).
• D3 (s). low transfers to overcome the rise and braking engines on the descents.
• D2. mode for difficult conditions (slippery or mountain road). The gears above the second are not switched, that is, only the first and second gears are turned on.
• D1 (l). movement occurs only in 1 gear, used on off.road through mud, snow or ice, where you need to go without extension, as well as to overcome steep rise.

The checkpoint of the machine has a heavier button on the lever of switching modes with the inscription O/D OFF. When it is turned on, there is a ban on inclusion, increasing the transmission of analogue 5 of the gear manual transmission. That is, if your machine has 4 transmissions for moving forward, then for more dynamic acceleration it will use only three lower gears.

The automatic machine is much more complicated about the malfunction of the gearbox that meet with the manual transmission, and the chances of repairing it in your garage are small. But despite this, you still need to know something about her, if not to harm her with improper operation.

The automatic checkpoint is much more demanding on the accuracy of maintaining oil levels in it than mechanics. She is very harmful both too low and excessively high oil level. Both can lead to her serious breakdowns. In both cases, oil foaming occurs. With a lack of oil due to the fact that the oil pump, along with the oil, begins to capture air. With an excess of oil, it is fenced by rotating details, which in this case are immersed in it. Foamed oil is better compressed and has small thermal conductivity. Therefore, if you operate an automatic machine with such oil, the pressure in its control systems will be low. Which will lead to a slip of the frictions and their intensive wear. Worsened thermal conductivity will not allow all excess heat to remove. That in conjunction with low pressure will lead to the fact that the machine will fail and require serious repair.

Foamed oil has a larger volume. Therefore, the oil test will show too high level. If you find that the oil level has risen for no apparent reason, you need to drown out the motor and give the clock settled. After that, check the level again. If it turns out to be low, you need to perfectly add the required poria and repeat the check.

The oil level in the machine is checked using a probe or through a control opening closed with a plug.

How to check the oil level using a probe

Select a flat horizontal site for measurement. Put a car on a handbrake.

• Spend the lever the choice of the operating mode of the box through all the provisions, lingering in each from 3 to 5 seconds, until the machine gun is triggered.
• Leave the mode selector in position P, and in this position determine the oil level.
• Do not turn the engine to remove the oil probe, wipe it dry and insert it into the tube until it stops, then pull out and count the readings. The upper boundary of the traces of the oil on the dry probe should be at the mark with the inscription Hot or in the area with intersecting notches.

It is possible to add oil in case of insufficient level through a tube into which the probe is inserted. Do not forget that the automatic transmission is afraid of dirt, so add only pure new oil. Wipe the probe with a clean rag from which the threads do not fall out.

Checking the oil level, pay attention to its type. Dark with the smell of Gary, the liquid suggests that not everything is in order in the unit. First, try to change the oil and filter in automatic transmission. ATF milk color speaks of a cooling liquid box entering a box. The cooling liquid softens and inflates the material from which the clutches are made. Do not hesitate with the replacement of such oil, having previously eliminated the cause of the antifreeze entering the box, otherwise significant damage will be caused to the machine. The cooling liquid can fall into the box due to the leakage of the oil section in the radiator of the cooling system. In this case, the emulsion will be observed both in the box and in the engine cooling system.