A few words about the principle of clutch. The work of any engine on the car ends with the rotational motion of heavy flywheel. Driving an accelerator, you can only increase or decrease the rotation speed of the flywheel. In order for the car to move from the place, it is necessary to convey this movement to the mechanical gearbox - the speed box. It is necessary to transmit this rotational movement very much, otherwise the motor will simply stall. The same operation is a smooth shutdown of the transmission - it is necessary and when the car is stopped. Clutch and is the "soft" switch.

The principle of operation of this device is easy to understand. Imagine two rotating discs with a small steering wheel. One of them is a flywheel of the motor, and the second is the clutch disc. If during the rotation of the flywheel to it tightly press the disk from the gearbox, then the rotational movement will be transferred and the car will start moving. It seems that everything is very simple. Everything works so and only discs are compressed with special mechanisms, and special gaskets are installed between them.

Basic malfunctions can be poor discharge of discs or the late separation. It is said that the clutch "leads" or "sinks."

How touples clutch

If the smell of Gary occurs when the car occurs when the car occurs, it became worse than the acceleration of the machine, a decrease in the speed when overcoming the lift is noticeable, then this is a clear symptom of malfunction - stacking. To clarify this diagnosis, you can when the engine is running and tightened manual brake Enable transmission. Then, smoothly pressing the control pedal, smoothly release the clutch pedal. If the engine stops, there is no slipping, and if it continues to work, the clutch strokes.

The causes of this unpleasant phenomena can be: violation of the free stroke of the pedal, wear or grinding of friction linings, the wear of the pressure springs, or the malfunction of the hydraulic pressure of the clutch.

How the clutch leads

The movement of the car is broken by jerks, the difficulty in shifting gear occurs. Shocks in transmission when driving a car from a place, a sharp turning on the clutch with a smooth release of the pedal, unpleasant noise - all these signs of a malfunction, which is said to say that the "clutch leads", that is, when you press the pedal, the discs do not completely diverge, but the presenter shaft boxes The gear continues to rotate.

The degree can be checked as follows. With small revolutions crankshaft The engine should squeeze the clutch pedal to failure, and if the first transmission turns on silent, then the clutch turns off completely. If, when you turn on the first gear, heard loud noise Gears and transmission does not turn on or turn on with difficulty, the clutch "leads".

The causes can be: a large free pedal move, air input into the hydraulic engine system, brake fluid leakage

It is possible that simply weakened the engine mounting screws with or completely produced lubricant in bearings. There are quite a few reasons for the emergence of a malfunction, and the output one - they need to be eliminated, and the earlier, the better and much cheaper.

The problem with the slip of the clutch on cars that is customary to refer to the domestic classics is well known. This defect causes not only serious inconvenience in driving a car, but also entails unplanned financial losses. The clutch slip leads to a fairly rapid failure of the frivolous bearings, disk wear and the combustion of the entire basket as a whole. This article is designed to answer the questions: why the clutch is dropped and what should be taken in a particular case?

How to define this defect?

The clutch slip can be simply identified independently, without the use of special equipment.

To do this, you must perform the following series of simple actions:

• start the engine;
• include neutral gear;
• tighten the hand brake;
• press the gas pedal;
• squeeze the grip;
• go to the first speed;
• release the clutch pedal.

For all the rules, as a result of these manipulations, the engine ultimately must be stuck. If this did not happen, the motor continues to work, and extraneous sounds or the smell of Gary appear, this means that the clutch and measures should be taken to be taken immediately. This is caused not only by financial reasons, but also by considerations of their own security.

Causes of clutch slip

The reasons that cause this effect may be several. As a rule, they arise due to the characteristic driving style, which is called sports. Sharp accelerations and braking, frequent gear shifting significantly reduce the working clutch resource, although AvtoVAZ and determines it in 75-85 thousand mileage kilometers. In addition, experts argue that the use of trailers can significantly affect the performance of the vehicle. It is believed that they are able to significantly reduce the life cycle of nodes and mechanisms of the automotive element. Consider the most common actual causes of clutch slip.

Oil hit

Often, if the clutch is dropped, the reasons for this are licking in oil entering or another technical fluid In garbage. The oil falls on the surface of the released disk, the flywheel or on the lining of the slave disk due to the leaks of the rear seal of the knee shaft. Often the cause of the leaks is also overweight oil in the gearbox crankcase. In these cases, if the clutch is dropped, the VAZ-2107 is very simply repaired. It will be enough to eliminate the cause of leaks and clean the systems of the system to which the oil fell. This can be done with the help of White spirit or gasoline. In the case of fluid getting into friction overlays, they will also have to clean the sandpaper small-scale paper.

Wear lining discs

Friction cuts of discs have the property to be stitched over time.

As a rule, it does not only be a grip, but also significantly reduces the free course of the pedal. The output of the current situation in this case can only be one - replacing the linings or clutch disks entirely. It must be remembered that if only the lining is replaced, then you need to pay careful attention to the state of the gaskets. If they have damage or burned plots, they must also be replaced.

Spring damage

Another reason for which the clutch is dropped, can be a failure of a push spring.

In this case, the spring is simply not capable of creating the required pressure on the disk. A damaged or worn spring must be replaced with a new one.

No gaps in shutdown drive

Another sufficiently frequent reason why the clutch is dropped (VAZ-2107 or 2105, it does not matter) is the incorrect operation of its drive. Most often, this is due to the fact that the required clearance of the clutch shutdown drive simply is missing. This problem is easily eliminated by adjustment to the desired values.

Insufficiency of the free stroke of the pedal

It is often a clutch (VAZ-2107 often sinning with it) and due to the fact that the pedal has too small free stroke.

The manufacturer has a range of values \u200b\u200bof 25 ... 35 mm. This indicator is enough to simply measure the simple lineup and, if necessary, adjust.

There are other reasons due to which the grip of vases of any model, and "seven" in particular.

They are not so often found compared to those listed above. But it is still necessary to know about them. In particular, the following faults can be called:

• Salt the friction lining. The lining itself may not have visible damage or burned areas. But as a result of the detachment, it ceases to perceive the load with the entire surface, which leads to the slip.
• Overheating of the release disk. As a result of exceeding the temperature values \u200b\u200bof the maximum possible heat-absorbing characteristics of the clutch disk, it is permanent expansion, which causes the slip effect. Of course, this defect cannot be installed on the go. But it is possible to determine it quite easily according to the characteristic flare Gary and scale on the disk itself.

This article lists the main reasons why touches the grip on the domestic classics and on many other models of passenger and trucks. It is important to remember that, what would be the reason for the clutch slip, eliminate it is necessary at the first appearance of the symptoms of the defect. It is more expedient to task this work to highly qualified specialists.

Disassembly, repair and replacement of clutch details - the work is quite time-consuming and requiring quite deep knowledge, greater experience, as well as the presence of special tools and equipment.

In addition, repair workperformed independently enough risk to break correct settings and adjustment, which will turn the replacement of parts in Sisyphers work. Very soon, the grip will again begin to slip, it will be clearly felt in the car and linings, and the smell of superheated disks and lining will be clearly felt in the car.

The grip of the VAZ 2107 is part of the transmission mechanism involved in the transmission of torque on the drive's drive wheels. There is a grip between the gearbox and the car engine and transmits rotation from the engine to the box. At the time of pressing the pedal, the clutch is turned off and the engine is separated from the gearbox. When the pedal is released, the connection is restored again. The grip provides a smooth touch of the car from the scene and silent gear shift.

Major faults

The working cylinder has several rubber seals, which often come into disrepair or grinding, then the clutch of the car "rack". The replacement of old seals to new will require to use the lift or observation pit, as the main cylinder is located in an uncomfortable place.

When replacing seals, we should not forget that the system is located brake fluid, it must be pre-merged.

The conical nut is preferably not touched, otherwise then additional adjustment will be required. In order to replace the gasket without removing the main cylinder, you need certain skills and experience.

Another cause of the clutch malfunction can be the deposit bearing wear. To replace it, you will have to dismantle the gearbox. No less often wear overlays brake discThis is easy to notice according to the characteristic noise at the time of letting the pedal. And the most common clutch fault problem is air in the system. Remove air can be removed.

Pumping

For pumping, you will need brake fluid and containers for its drainage, as well as a transparent hose, with a diameter of 5mm. And the assistant who will have to click on the clutch pedal until heaviness appears in it. After that, it must be clamped, and the second person at that time should unscrew the fitting and drain the entire brake fluid. Air bubbles will be visible in the hose. The procedure should be repeated before the disappearance of these bubbles. You should also not forget about the level of fluid in the expansion tank.

Adjustment

Adjusting the clutch on the VAZ 2107 is carried out by adjusting the adhesion drive, or rather the adjustment bolt, which is at the end of the cable in the subcontrol space. Incorrect adjustment leads to the fact that the adhesion is dropped.

1. The car is installed on the overpack or the observation pit.
2. In the cabin, the free course of clutch pedal is checked and, if necessary, adjustment is performed. For this, the key to 10 needs to weaken the lock nut of the pedal limiter and the required clearance is set, about 0.4-2 mm.
3. The pusher is cleaned about dirt and penetrating lubricant is applied.
4. The working cylinder is checked on the free stroke of the pusher, on which the free course of the release bearing depends. For this, the clutch plug is pressed back to the stop, while the free stroke of the pusher should be within 4-5 mm.
5. Adjusting the free stroke of the pusher is performed by the key on the 17, which will be kept from turning the adjusting nut, and the tightening of the lock nut is weakened with the key to 13.
6. The key on 8 holds the pusher, at the same time key on 17
7. the adjusting nut is swinging and the necessary free move of the pusher is installed, it is about 4-5 mm.
8. The locking tighten is delayed for this, the adjusting nut of the pusher is held.
9. In the cabin of the car, the total free course of clutch is checked, which should be approximately 25-30 mm. From the top position of the pedal before starting on. If necessary, the entire operation is repeated several times until it feels that the clutch is no longer refusing.

Replacing the main and working cylinder

Replacing the main cylinder is performed in the following sequence:

1. Liquid merges from the tank. This can be done with the help of an ordinary syringe, or by removing the hose from the fitting of the main cylinder.
2. The pipeline fitting is unscrewed leaving the clutch working cylinder.
3. The key to 13 unscrew two nuts on which the main cylinder is attached.

Replacing the working cylinder:

1. A spring is removed from the working cylinder.
2. The key to 10 unscrew the tube connecting the main and working cylinder.
3. The key to 13 is unscrewed by two bolts of the working cylinder and removed along with the plate.

After replacing the working cylinder must be pumped.

Independent clutch replacement

When replacing the clutch, you should carefully examine all the removable parts, it is quite possible to replace the entire node will not need, just some details will be changed.

Replacing the clutch is made in the following sequence:

1. Disconnect the battery terminals.
2. The transmission turns off the gear lever.
3. From the resonator is disconnected exhaust pipe, Then the working cylinder is disconnected from the test cable. Cardan is disconnected from the checkpoint itself.
4. The bolts that are fixing the starter to the gearbox housing are unscrewed, but before it should release the two lower nuts that are fixed by transmissions to the engine block.
5. The gearbox is removed, then the clutch basket is dismantled. After removing the basket, the clutch disc is released
6. At this stage, if necessary, the main cylinder and other components are replaced, for example, the clutch fork or mustach on the basket changes.
7. The assembly and installation of the node is performed in the reverse order.

When assembling, all the details must be rinsed thoroughly, but in no case cannot be done in gasoline or in oil. Lubrication is carried out only by brake fluid.

The clutch is one of the most important knots in the car, without which he simply does not touch. Therefore, this complex system requires proper attention and care. Malfunctions in the work of the clutch can lead to spontaneous car movement, and this is already a direct threat to the lives of others.

Well no

The clutch slip can lead to a deterioration in the traction quality of the car, to a decrease in the speed of movement and makes it difficult to move in difficult road conditions.

Here are the most common causes of slipping: the lack of free movement of the pedal; Wornness of friction linings; swelling rubber parts.

To eliminate the causes of the clutch, must first be checked and adjust the free move of the clutch pedal if necessary. The free stroke of the clutch pedal in millimeters, measured in the center of its platform using a ruler, the move must comply with the following data:

Zap3-966 "Zaporozhets" .......................................... 34-46

ZAZ-968M "Zaporozhets" ........................................26-38

ZAZ-1102 "Tavria" ...............................................20-30

"Moskvich-408, -412" .......................................... .35-45

"Moskvich-2140, -2138" ........................................4.5-5.5

GAZ-21 "Volga" ................................................... 32-40

GAZ-24, GAZ-24-10 "Volga" .................................... 12-28.

VAZ-2101, -2103, -2106 "Zhiguli", VA3-21 21 "Niva" 20-30

VAZ-2105, -2107 "Zhiguli" .............................. .. 25-35

VAZ-2108, -2109 "Zhiguli" ................................ 35-40 *

* Free course of clutch shutting down lever.

Wear friccine overlays to rivet heads

The reasons:
- Normal wear in accordance with operating conditions;
- frequent touching from the place / error in driving a car;
- tight stroke of the clutch drive system;
- The clutch drive is set or adjusted incorrectly.

Result: insufficient clutch compression force.

Loss of elasticity in pressure springs. The slip of the disks occurs with weakening or breakdown of pressure springs, wear, or blocking surfaces of the flywheel friction and pressure disk. Sweet disk friction linings. Faulty pressure springs and grinding friction linings are replaced with new ones. Fraining surfaces of the flywheel and pressure disk are treated with grinding.; If, during the movement of the car, a characteristic smell of combustion of friction linings appears, there is a slow acceleration of the car, the speed is reduced or the rise is overcome too slowly, the reason for this, as a rule, is a clutch, that is, the clutch is not fully turned on. If you want to finally make sure that the clutch is guilty, it is necessary to pull the brake handle when the engine is running parking system before the failure, then turn on the transmission, after that slowly pressing the pedal throttle valve, smoothly release the clutch pedal.

If the engine stalls, the clutch is working normally, if the engine does not stall, it means that the clutch strokes. In this case, first of all, you need to check and, if necessary, configure the free movement of the clutch pedal. Wornness of friction linings. When the friction linings are worn, the clutch slip also occurs, since the free movement of the pedal is reduced. If the linings are not very worn, the clutch slip is quite possible to eliminate the free stroke setting. If the linings are fully worn out (the distance between the working surfaces and rivets is less than 0.2 millimeters) is necessary full replacement The driven disk complete with overlays.

Friction lining must be changed and when the cracks, extensions and one-sided jackets are detected on the surfaces. Swelling of rubber parts of the hypreen of the clutch. One of the grounds for the clutch slip can be swelling of rubber hydraulic parts. This defect may arise due to the poor quality of the brake fluid or its composition does not comply with the standards, it is also possible to enter liquid Mineral oil, kerosene, gasoline. To eliminate this malfunction, you need to remove the working and main cylinder of the hydraulic drive, disassemble and rinse the entire system with clean braking fluid or alcohol, replace the swollen parts, clean the compensatory hole and pour a new brake fluid corresponding to the composition and quality. Loss of elasticity in pressure springs. As a result of long-term work, the pressure springs are elasticity. Due to insufficient pressure on the slave disc created by pressure springs, the clutch also slides. Their condition is advisable to check at the station maintenanceBecause for this you need special devices and devices. Weakened springs must be replaced. Oil on friction linings.
Combining or oiling friction linings

The reasons:
- damage to the seal of the gearbox or engine;
- excess lubricant on the primary gear shaft or on the crankshaft bearing;
- impaired tightness of the hydraulic drive.
Result: Reducing the friction coefficient of friction linings

If, with the usual free movement of the pedal, the clutch strokes, possibly oil on the friction linings. It is necessary to remove the clutch and very carefully check whether the slave disk is not grilled together with friction linings. The oil can get to the slave disk along with the friction overlays due to the fact that in the gearbox too much oil, due to clogging of the drainage opening of the flywheel or due to the fact that the primary bearing is casually lubricated in the gear change box. To remove oil with friction linings, they need to be thoroughly rinsed with kerosene or gasoline, wipe dry and clean the gently sandpaper. Strongly washed slave disk must be replaced with a new complete with friction linings. After that, in the transmission box, lead to normal oil level, clean the flywheel hole

Burned or detached clutch friction

The reasons:

- start from the place on too high gear;
- too small adhesion compression force (weak presser);
- a malfunction or defect in the clutch inclusion system or the absence of a gap between the bearing and the clutch shutdown levers, the tight passage;


Result: overheating leads to severe damage to the material of friction linings.

Friction pad perceives load not entire surface

The reasons:
- the flywheel was not finalized;
- The friction surface has a large number of scratches.
Result: reducing the friction coefficient of friction linings.

Note: On a new pressure disk, the friction pad at first perceives the load only outside (a large friction radius), thus ensuring the full loading of the full load of new parts. This is not a defect detail.

Overheating of the clutch pressure disk

The reasons:
- constant clutch singing;
- grinding or suping;
- malfunction or defect in the clutch shutdown system or insufficient gap between bearing and clutch shutdown levers, tight running;
- Too much depth of the flywheel - a refinement error.
Result: reducing the friction coefficient of friction linings. Due to too much clutch compression effort, the permanent clutch slip leads to exceeding the values \u200b\u200bof the heat-absorbing ability. The result is overheating.

The ends of the membrane spring are very worn

The reasons:
- the drive system is worn;
- the guide tube has been generated;
- Too high preload on released Bearing.
Result: The enclosure compression force is blocked due to the "hanging" of the release bearing or partially decreases due to high preload

Rift of the membrane spring

Cause: Excess compressing efforts or permissible clutch shutdown.
Result: The compression force of the membrane spring loses its calculated value.
Note: Small pressing of the pressure disk leads to clutch disconnection issues.

The clutch slip must be eliminated immediately as soon as this defect was detected. Otherwise, when driving on a difficult road, you can deal with the engine.

Many drivers change consumables too late. The same applies to the transmission of the car. In this article, we will consider a rather common problem of many motorists and tell me what to do if the clutch is dropped? But before considering the problem, we will understand what it is for the item, for what it is intended and how does the symptoms of its failure manifest?

What is the clutch?

The clutch is necessary for transmitting torque from the engine flywheel to the intermediate shaft of the car gearbox. This is exactly the detail that can limit or create a connection between power installation and transmissia. The principle of clutch operation is based on friction arising between two pressed discs. When you click on the clutch pedal, the disk is pressed, and the torque transmission stops. When releasing, the disc is pressed again to the flywheel and then it enters the work.

Why does the clutch fail?

Clutch disc is consumable material And sooner or later, it is still replaced. Repair the worn disc is impossible. The fact is that when in contact with the flywheel, it begins to set some time and only then the details are connected among themselves. Thus, the clutch thickness decreases and ultimately the disk loses its function.

"Stroke" a clutch can also be a quick way. Many drivers, at the beginning of the move, press the gas too much and at the same time quickly release the clutch pedal. At these moments, the clutch wear increases at times and then its replacement will be pretty soon. Fast disk wear is also achieved fast driving on low gears. At that moment, when the turns are large, and the transmission is too low, the clutch does not have time to transfer the desired moment to the intermediate shaft, and starts slipping. Thus, it receives additional "unnecessary" friction and is rapidly wear out.

Another reason is to get into the working part of the disk motor oil. The problem is quite rare, but also takes place. The fact is that with the wear of the crankshaft seal behind, the oil seeps into the engine flywheel. Oil remains on the clutch surface, and friction decreases, so the disk "runs".

Signs of worn clutch

• It has become difficult to touch on the car. To be accurate, the pedal must be removed as follows and only then the machine begins to move. Another option such a problem may be too difficult to turn on the gear or even their crunch.
• Noticeable loss in power. It is expressed in that when quickly driving, especially on low gears, failures appear: the car twisted and each time this effect is enhanced. To this malfunction and refers to the expression "Coupling". The disc is pressed by a loosely and from time to time slipping, creating discomfort when driving. Mount the car is already clear enough.

What actions need to be taken if the clutch is dropped?

First, let's try to extend the life of the disk. For this, it is possible, and accordingly change the position of the disk relative to the flywheel. For this, in the cabin or under the hood there is a special adjustment device. Twisting the corresponding nuts, we can raise the pedal, thereby stronger to press the clutch disc to flywheel. This method Recommended only for those who have not yet worn friction overlays on the working part of the part. Therefore, it is not recommended to apply it for all cases.

Video - how to adjust the clutch drive

The most rational and correct solution is the replacement of the clutch, however, before that, you need to go to the garage. Do it need it extremely carefully. To avoid problems, you need to go with the smallest number of revolutions. Starting the movement is necessary "under load". This means that the clutch needs to be released as smoothly as possible, but at the same time to add a minimum of gas, and then not to add at all. Transmission should be performed according to the amount of revolutions to which the manufacturer prescribes.

Replacing the clutch VAZ 2107 do it yourself

Perform this procedure recommended on observation pit and overpass. First of all, it is necessary to immobilize the car using the counter-type devices. Using the gearbox is not allowed for this, as it will need to be removed.

Initially, the minus battery terminal is removed and the brake fluid from the clutch tank merges. After that, it is necessary to remove the starter from the engine and disassemble the velocity switch lever in the car. To do this, the upper handle twists.

Now you need to go under the car. Remove the fastening cardanian Vala to the shlits of the gearbox. Previously, it is necessary to mark the position of disconnected elements, since there is a risk of incorrectly assemble nodes in the future, which is why vibration and buzz appears. CPP disconnecting the lamp switching terminals rear stroke, and the speedometer drive cable is disconnected. Next, unscrew the two screws for fastening the clutch cylinder and remove the last to the other side. Unscrew the nuts securing the gearbox to the bottom of the car.

The latter action will be unscrewing nuts with which the transmission is fixed on the engine. At the same time, the help of a partner will need, which will hold and insure a heavy unit from falling. To facilitate the dismantling of the gearbox and disrupt it from the mounts, it is recommended to facilitate the work to install the switch lever to the position that corresponds to the third gear.

To avoid unnecessary replacements in the future, we advise you to change the next list of parts: the crown of the engine flywheel, the release bearing, the drive (and the slave) and the bolts that are attached to the basket. Many experienced masters change the basket with a new disc assembly.

After replacement, you must install the gearbox in place. It is very difficult to do this, since this action is performed only with the help of centering. If this is not done, the box will not fall into place. For the centering, you can use a special centering device, or the primary shaft from the old, disassembled PPC.

Further assembly of nodes occurs in the reverse order. This is the whole complex of events, which is aimed at solving a common problem - "Coupling". We wish you good luck on the roads!