Life is full of surprises. And especially for motorists. Not only do you need to be constantly attentive on the road, but you also need to be able to notice and fix problems in your car in a timely manner. Especially when there are no populated areas nearby and the nearest service station is far away, or when you are stuck in a traffic jam and the clutch pedal is stuck or the brakes have disappeared.
This problem is a constant topic of discussion on many forums for car owners of almost all brands. Of course, a clutch can fail for many reasons. Let's look at the most common cases of problems with the clutch pedal of the VAZ 2106 and VAZ 2107.
Basic faults
The slave cylinder has several rubber seals, which often become unusable or become oily, causing the car’s clutch to “slip.” Replacing old seals with new ones will require using a lift or inspection hole, since the main cylinder is located in an inconvenient place.
When replacing seals, do not forget that there is brake fluid in the system; it must first be drained.
It is advisable not to touch the flare nut, otherwise additional adjustment will be required later. In order to replace the gaskets without removing the master cylinder, certain skills and experience are required.
Another cause of clutch malfunction may be wear of the release bearing. To replace it, you will have to dismantle the gearbox. Brake disc linings wear out just as often, which is easy to notice by the characteristic noise when the pedal is released. And the most common problem with a clutch malfunction is air getting into the system. Air can be removed by bleeding.
Drive and its adjustment
To begin with, if the reason is still in the cable and it needs to be changed, dismantle the old part.
It is attached directly to the gearbox with a bracket. Here you also need to unscrew all the bolts and nuts slowly and evenly. Next, the fork is disengaged after the cable has been slightly loosened, but not completely removed. The cable itself needs to be looked for under the hood of the vacuum hydraulic booster of the brake system. Use a screwdriver or other similar element to pry up and remove the locking bracket, and only then dismantle the part. Sometimes the reason is not in the cable, but in the bushing to which it is attached. It may be bent or out of order, making it difficult to secure even a new cable correctly. Therefore, if a breakdown occurs, then this part is also replaced. It is also advisable to lubricate the new cable with a special compound to prevent damage from friction.
Possible reasons for clutch pedal failure
The clutch pedal is depressed when depressed and does not return
This problem can be easily solved in stationary conditions either at a service station or with your own hands in the garage. To replace or repair the main clutch or control valve in the garage, you must have repair kits for the clutch slave and master cylinders.
Reasons for failure and non-return of the clutch pedal of VAZ2106 and VAZ2107:
How to drive a VAZ2106 or VAZ2107 without a clutch? We'll talk about this below:
Exploitation
Thanks to its simple design, the clutch slave cylinder is quite durable and not subject to breakdown. The main malfunctions are associated with wear of rubber seals, which deteriorate from loads, exposure to low temperatures and brake fluid. If damaged seals are not replaced in time, dust and dirt that gets inside will damage the cylinder mirror, after which the brake fluid used in the hydraulic drive leaks out through micro-scratches, even if new clamps are installed. In this regard, it is advisable to inspect the working cylinder at every maintenance, and if drips appear, either repair it or replace it with a new one.
The working cylinder repair kit includes the necessary replacement parts for each specific model: boots, seals, retaining ring, and some kits may have a spare return spring, piston, rod.
A normally operating clutch cylinder does not manifest itself in any way and does not require any special precautions. Replacing it is quite simple and quick
There is no specific replacement schedule; the working cylinder will last as long as its technical reserve allows, as a rule, at least 150 thousand km.
Leveling up
To bleed, you will need brake fluid and a container for draining it, as well as a transparent hose with a diameter of 5mm. and an assistant who will have to press the clutch pedal until heaviness appears in it. After this, it must be clamped, and at this time a second person must unscrew the fitting and drain all the brake fluid. Air bubbles will be visible in the hose. The procedure should be repeated until these same bubbles disappear. Also, do not forget about the fluid level in the expansion tank.
VAZ 2107 clutch diagram
Design and operating principle of clutch master cylinders
Typical diagram of a hydraulic clutch release drive
The most simple design of the GCS is with the tank removed and installed on the body. The basis of the device is a cast cylindrical body, on which lugs for mounting bolts and other parts are made. At one end the housing is closed with a threaded plug or a plug with a fitting for connection to the pipeline. If the housing is closed with a blind plug, then the fitting is located on the side surface of the cylinder.
In the middle part of the cylinder there is a fitting for connecting to the tank via a hose or a seat for installing the tank directly on the body. There are two holes made under the fitting or in the seat in the cylinder body: a compensation (inlet) hole of small diameter and a bypass hole of increased diameter. The holes are located in such a way that when the clutch pedal is released, the compensation hole is located in front of the piston (from the drive circuit side), and the bypass hole is located behind the piston.
A piston is installed in the housing cavity, on one side of which there is a pusher connected to the clutch pedal. The end of the body on the pusher side is covered with a corrugated protective rubber cap. When the clutch pedal is depressed, the piston is retracted to its extreme position by a return spring located inside the cylinder. In double-piston gas pumps, two pistons are used, located one behind the other, with an o-ring (cuff) between the pistons. The use of two pistons improves the tightness of the clutch drive circuit and increases the reliability of the entire system.
Such cylinders work as follows. When the clutch pedal is released, the piston is in its extreme position under the influence of the return spring and atmospheric pressure is maintained in the clutch drive circuit (since the working cavity of the cylinder is connected to the reservoir through a compensation hole). When you press the clutch pedal, the piston moves under the influence of the force of your foot and tends to compress the fluid in the drive circuit. As the piston moves, the compensation hole closes and the pressure in the drive circuit increases. At the same time, through the bypass hole, liquid flows behind the back side of the piston. Due to the increase in pressure in the circuit, the piston of the working cylinder moves and moves the clutch release fork, which pushes the release bearing - the clutch disengages and you can change gear.
When the pedal is released, the piston in the main circulation center returns to its original position, the pressure in the circuit drops and the clutch is engaged. When the piston returns, the working fluid that has accumulated behind it is squeezed out through the bypass hole, which leads to a slowdown in the movement of the piston - this ensures smooth engagement of the clutch and the return of the entire system to its original state.
If there is a leak of working fluid in the circuit (which is inevitable due to insufficient connection density, damage to seals, etc.), then the required amount of fluid comes from the tank through the compensation hole. This hole also ensures that the volume of working fluid in the system remains constant when its temperature changes.
The design and operation of a cylinder with an integrated reservoir for working fluid is somewhat different from that described above. The basis of this GCS is a cast body installed vertically or at an angle. In the upper part of the housing there is a reservoir for the working fluid, under the reservoir there is a cylinder with a spring-loaded piston, and a pusher connected to the clutch pedal passes through the reservoir. On the wall of the tank there may be a plug for adding working fluid or a fitting for connecting to a remote tank.
The piston has a recess in the upper part, and a small diameter hole is drilled along the piston. The pusher is installed above the hole; in the retracted state, there is a gap between them, through which the working fluid enters the cylinder.
It is not difficult to operate such a GVC. When the clutch pedal is released, atmospheric pressure is observed in the hydraulic circuit and the clutch is engaged. When you press the pedal, the pusher moves down, closes the hole in the piston, sealing the system, and pushes the piston down - the pressure in the circuit increases, and the working cylinder actuates the clutch release fork. When the pedal is released, the described processes are performed in reverse order. Leaks of working fluid and changes in its volume due to heating are compensated through a hole in the piston.
How to get to the nearest service station or home if the clutch pedal has failed?
The task, although not easy, is still quite realistic. The main thing here is to get going and not take your foot off the gas, maintaining the speed in first gear.
You need to proceed as follows
We warm up the engine, turn on the emergency lights, then turn on first gear, and turn the key in the ignition. When the engine starts to “catch”, give the gas and start moving. With the right approach, the car will not stall, and you will be able to move away and slowly get to your destination. Don't try to change gear without a clutch - it is certainly possible, there is a technique, but without the proper skill you will most likely stall or damage your transmission.
Now you know why the clutch pedal does not return, for what reasons this happens and how to solve this problem. In addition, if this happens, you will know how to get home if the VAZ clutch pedal fails. That's all for me, write in the comments how you solved this problem and what signs of malfunction you had and the cause of the breakdown. Thank you all for your attention and see you again at VAZ Repair. Bye.
How to finally adjust the clutch on a VAZ 2107
After all manipulations, it is necessary to check the functionality of the system. To do this, you need to start the engine and let it warm up. Then, with the engine running, you need to depress the clutch and, without accelerating, engage the rear rocker position. In this case, the presence of extraneous sounds and rattles is not allowed. The position is turned on easily - without additional effort.
Next, you can start moving at first speed and then increase the position to maximum (5). When driving, the presence of extraneous sounds or grinding noises is strictly unacceptable; the pedal is pressed evenly, without dips or jerks.
The last stage is acceleration at each gearbox speed, while the set of engine speeds fully corresponds to the acceleration of the car. If there is dissonance, the clutch disc slips and recalibration is required.
How to determine this defect?
Clutch slipping can be easily detected independently, without the use of special equipment.
- start the engine;
- engage neutral gear;
- apply the handbrake;
- press the gas pedal;
- depress the clutch;
- go to first speed;
- release the clutch pedal.
By all rights, as a result of these manipulations, the engine should eventually stall. If this does not happen, the engine continues to work, and even extraneous sounds or a burning smell appear, this means that the clutch is slipping and measures to repair it should be taken immediately. This is caused not only by financial reasons, but also by reasons of personal safety.
Clutch mechanism of VAZ 2107
The VAZ 2107 clutch is a rather complex mechanism consisting of several dozen elements. The reasons for its malfunction can be very different. However, they can all be divided into two groups:
The clutch, like any other car part, has a limited service life. First of all, it depends on the skill of the driver, and therefore is not regulated by the manufacturer. To increase the service life of the clutch, it is necessary to adjust it in time, monitor the level of working fluid, avoid off-road driving, and learn the skills of using the clutch correctly.
It must be remembered that in addition, the clutch is a safety device that protects the transmission from serious damage when the rear wheels are blocked by various obstacles. The car is stuck in a quagmire, the drive wheels are stuck, the engine power is enough to turn the stuck tires. In this case, the clutch will begin to slip, protecting the gearbox, cardan and rear axle from damage. Yes, the driven disc linings will burn out. Yes, the clutch will overheat, which can cause the steel flats to warp or weaken the spring plates. But more expensive units will be protected from breakdowns.
Classic VAZ models have a dry, permanently closed single-plate clutch . It includes two main elements:
Classic VAZ models use a single-disc dry, permanently closed clutch: 1 - flywheel; 2 — clutch driven disc; 3 — clutch basket; 4 — release bearing with clutch; 5 — hydraulic clutch reservoir; 6 - hose; 7 — master cylinder of the hydraulic clutch release; 8 — servo spring of the clutch pedal; 9 — clutch pedal return spring; 10 — clutch pedal travel limit screw; 11 — clutch pedal; 12 — hydraulic clutch release pipeline; 13 — ball joint fork; 14 — clutch release fork; 15 — release spring for clutch release fork; 16 - hose; 17 — working cylinder of the hydraulic clutch release; 18 — clutch bleeder fitting
What is the clutch mechanism?
The VAZ 2106 and 2107 have a dry type of clutch with one disc, which operates as a closed mode. The spring mechanism is located in the center, the vibration damping device is located on the driven disk. This unit is a non-separable mechanism with a protected housing, inside of which there is a push-type clutch disc and a diaphragm spring.
The protective housing is attached to the flywheel using special bolts and dowel pins. The clutch disc is connected to the protective part of the housing through three pairs of steel plates. The clutch basket of VAZ 2106 and 2107 is connected to the outer part of the diaphragm spring by means of locking fasteners. The spring is held on two rings attached with rivets to the protection body. The clutch disc is made of steel and has 12 sectors with driven slots.
Friction linings are connected to the sectors separately from each other. In the gear shift mechanism of VAZ 2106 and 2107, the damper, which is located between the driven disk and the hub, performs the function of attenuating passive torsion pulses.
The hydraulic mechanism includes the main and clutch master and slave cylinders, the clutch fork, the release bearing, the fluid reservoir, and the clutch foot pedal with a spring. Safety on the road while driving depends on the reliability of this mechanism. Therefore, it is necessary to promptly check the fluid level in the tank and the condition of the cable.
At the first signs of a sticking clutch pedal, you should perform preventive diagnostics of the elements of the vehicle’s clutch system so that you do not have to apply this knowledge in practice.
Replacing the clutch yourself
When replacing the clutch, you should carefully inspect all the parts being removed; it is quite possible that you will not need to replace the entire assembly; it will be enough to change only some parts.
The clutch is replaced in the following sequence:
When assembling, all parts must be thoroughly washed, but under no circumstances should this be done in gasoline or oil. Lubrication is carried out only with brake fluid.
The clutch is one of the most important components in a car, without which it simply will not move. Therefore, this complex system requires proper attention and care. Malfunctions in the clutch operation can lead to spontaneous movement of the car, and this is a direct threat to the lives of others.
What to do if the gear shift mechanism does not work?
If the clutch pedal fails on a road with heavy traffic, you should not be nervous, but act calmly with a “cool head” and get to the nearest parking spot, or even better, to a garage or service station. To do this, you can use a tug, tow truck, or drive yourself.
How to drive independently if the clutch system breaks down?
You can use the following tips from proven car enthusiasts:
You can also drive to the repair site with a VAZ2106 or VAZ2107 car without a clutch, engaging second gear in the same way when starting to drive. Only in this case it is necessary to take into account some important nuances:
In VAZ cars with a rear-wheel drive wheel pair, the clutch mechanism is a separate hydromechanical unit that interacts between the power plants and the transmission.
Causes and provoking factors
First, you need to find out why clutch pedals on cars can fail.
It is important to know not only the causes, but also the provoking factors that can lead to such dangerous breakdowns while driving.
- Broken cable. This often happens in the tip area. Breaks occur for a variety of reasons. But the fact is that a break has occurred and the problem needs to be solved. It is possible to cope with the task on the spot only if a spare cable accidentally ends up in the trunk. Given this potential danger, it is never a bad idea to have such a cable on hand just in case.
- Wear, deformation and damage. Moreover, this may concern various parts that are directly related to the clutch assembly in the car. Damper and diaphragm springs, as well as flywheels and pressure plates, are most often affected. In some cases, the culprit is the bearing. It also cannot be ruled out that the release fork is simply stuck in the clutch.
- Malfunction related to the driven disk. This disk may fail if there are defects, as a result of deformation and various damages.
- Leak in the hydraulic system. It is quite possible that the pipeline responsible for the passage of hydraulic fluid has failed.
- Problems with the master and slave cylinder. Here, air is likely to get into them, which disrupts the normal operation of the clutch pedal.
- Wear of friction linings on the driven disk. This results in insufficient free play for the pedal.
- Aggressive and inept driving style. All of the above breakdowns can occur due to the fault of the driver himself, who has not learned to operate the clutch pedal correctly.
As you can clearly see, there are a lot of reasons and factors influencing the occurrence of problems with the clutch pedal in vehicles.
It is not always possible to eliminate them in the field and calmly move on with your business. In some cases, you may need to stop and call a tow truck. It is strongly not recommended to take risks and try to get to the service station or home on your own.
But sometimes circumstances work against the driver. And the only option to get help and return the clutch pedal to working order is to try to drive yourself to a car service center. Nobody wants to face something like this. But sometimes there is simply no other choice.
What actions should be taken if the clutch slips?
The most rational and correct solution is to replace the clutch, but before that, you need to get to the garage. This must be done with extreme caution. To avoid problems, you need to drive with the lowest number of revolutions. It is necessary to start moving “under load”. This means that the clutch needs to be released as smoothly as possible, but at the same time add a minimum of gas, or even not at all. Gear shifting should be performed according to the number of revolutions prescribed by the manufacturer.
Typical Ford Focus II clutch malfunctions
Let's look at the cases in which Ford Focus 2 clutch replacement
or repair of its individual components:
- incomplete shutdown;
- incomplete inclusion;
- increased noise when the clutch is engaged;
- vibrations;
- Difficulty shifting gears.
Craftsmen recommend installing all new parts at the same time, and not just worn-out ones. This is explained by the labor-intensive nature of the process, and the service life of undamaged structural elements has already been reduced and they will soon also require replacement. The owner decides what to do.
Low gearbox oil level
An insufficient amount of oil in the box makes the process of shifting gears extremely difficult, but the speeds must be engaged. When switching in this way, a metallic crunch is heard, and when driving in a gear, the transmission begins to make a lot of noise and “howl.”
A complete lack of lubrication in the gearbox will not allow you to change gears, since without oil the synchronizers will not be able to work properly, and the gears in the gearbox will not engage.
Any manifestation of these symptoms requires immediate cessation of operation of the vehicle and checking the transmission oil level in the gearbox. It is also necessary to inspect the gearbox for damage to the housing, oil leaks through the seals and gaskets.
It should be noted that for manual transmissions of many cars, the oil in the gearbox is filled from the factory for the entire service life. In practice, replacement is recommended every 60-80 km. mileage
It is imperative to fill only with lubricant recommended for viscosity and other characteristics. As for adding oil to the transmission, it is necessary to separately take into account the issue of compatibility with the already filled lubricant.
Choose the best
The last point in the question of which clutch is best to install on a VAZ 2107 car will be a short review of the most famous clutch kits for classic cars. Differences in brand products lie in reliability and behavior during operation.
Valeo
The well-known company from France is also known for its high-quality brake pads. Judging by the reviews of car owners, the clutch is characterized by soft operation with a clear engagement moment.
Many note the reliability of the new Valeo kits, which often operate without breakdowns for more than 150,000 km. The disadvantage is the high cost.
World famous German manufacturer of friction clutches. The products have always been distinguished by advanced design solutions. For example, the use of a torsional vibration damper on the pressure and driven discs significantly dampens vibrations, which contributes to comfort. LuK couplings are the best choice in terms of price-quality ratio, however, there are many fakes on sale, so you need to be careful when purchasing.
Kraft
The German brand has been known for 20 years, but recently products under this brand are increasingly being produced in Turkey, which, naturally, makes them cheaper. However, clutches have a lot of positive reviews, including:
Sachs
The German manufacturer has extensive experience in the production of transmission parts. All coupling models are equipped with asbestos-free linings, and they provide:
A domestic enterprise that supplies original products for Lada cars. The design of the coupling was developed by engineers from Tolyatti, but the components used in production are mainly imported. Most car owners, when deciding which clutch is best to install on the classic VAZ 2107, choose this manufacturer. The reason for this choice is the low price and acceptable quality.
Kraft tech
Turkish products licensed from the German company Kraft. The set is characterized by soft operation and is adapted to Russian working conditions. Some of the negative reviews relate to the fragility of the release bearing.
Cleaning system elements from oiling
First of all, you need to disconnect the battery, since to clean the flywheel and other elements of the system, you will need to dismantle the gearbox. And since when dismantling the box you will need to disconnect the electrical connectors, the battery should be disconnected. Remove the gearbox. If you do not have enough experience and knowledge for this, then it is better to seek help from a service station. Next, you need to unscrew the screws that secure the flywheel. Try to keep it from turning when you remove the screws. Remove the flywheel and clean it with white spirit or acetone. You can also use gasoline for these purposes. Do similar actions with the pressure and driven disk if these components are oily. Before direct installation, cleaned elements must be wiped dry.
Please note: if the driven shaft is too oily, it would be more advisable to replace it, since in practice cleaning the element rarely helps. It is also necessary to eliminate the cause of the oiling. In VAZ 2110 cars, oil leaks can occur through the gearbox or engine seals. Reassemble everything in reverse order.
Using a wrench, unscrew the screws that secure the flywheel. Dismantle the component and clean it of oil. Also visually check it for mechanical damage.
