Signs of a faulty clutch release bearing

With a working engine, an impeccable gearbox, and a new chassis, the car will not go anywhere without a clutch. On the Lada Vesta this is one of the most important components. The task of a mechanical clutch is to connect the internal combustion engine and manual transmission, transmitting torque from the engine to the chassis, and also to separate them when changing gears (if you leave the gearbox input shaft rotating through the internal combustion engine, the gears will inevitably be damaged).

The Lada Vesta clutch on a manual transmission (mechanical) consists of one disc, engagement is made mechanically (dry, permanently closed type), the drive is hydraulic. The latter means that the unit is driven by fluid pressure and is adjusted manually (by foot) by the driver. In addition, the fluid system acts as a pedal booster. After all, simply pressing with your foot is not enough to set in motion the structure, which engages with the shaft while rotating several thousand revolutions. Therefore, there is no need for hydraulics on an AMT. Read the article to the end and you will learn the intricacies of this knot! Find out the problems that often happen and the clutch drive fails: the release bearing or the basket as a whole is broken. It's time to change, or adjust enough, precise adjustment is important for good operation of the unit. Replacement at the dealer at 9 TO.

Why does the clutch pedal click on the Lada Grant?

Often, owners of the new Lada Grana complain about the clicking of the clutch assembly. In most cases, the reason lies in insufficient lubrication of the drive cable.

Lubricating the cable yourself is not difficult. The lubrication procedure is described above; read additionally if repairs are necessary.

Sometimes the cause of the clicking sound lies in a faulty sensor (clutch pedal switch) located on the rear side. For dismantling and subsequent replacement you must:

1. Remove the block with wires coming from the dashboard.
2. Unscrew the two screws securing the base of the board to the pedal and replace the part.
3. Reassemble in reverse order.

Other malfunctions, such as loose pedals, stiffness, failure, are also associated with cable stretching, fiber delamination, winding damage, and worn out hinges.

The reason for the squeaking clutch pedal on the Lada Grant

The design of the clutch on the Lada Granta car is different from previous VAZ models. The shaft drive is activated by a cable with an automatic tensioner.

If the adjustment was made correctly from the factory, then the owner does not need to re-adjust the strain relief. In practice, this is far from the case; problems do happen. Especially at the stage of passing the first and second technical inspections.

Stage No. 1 Adjusting the clutch pedal of Lada Granta

The appearance of third-party noises and squeaks indicates the need for preventive maintenance and troubleshooting of clutch elements. First of all, we check the clearance on the drive fork.

In the engine compartment, dismantle the plastic casing of the air element and remove the pipes. Using a caliper, measure the size of the gap between the plastic wing and the fork. The factory standard is 27 mm, exceeding or reducing the length is unacceptable. We correct the gap by unscrewing the nut (key set to “10”).

Stage No. 2 Lubrication of elements

Lubricating the moving elements of the pedal assembly, including the compensator ratchet, clutch pedal bushing, and cable sheath.

To simplify the lubrication process, we use a grease gun, fill a medical syringe with transmission oil, and apply it to the surface.

Sometimes the creaking comes from the engine compartment. The reason is the leash of the tip. To eliminate squeaking, apply oil to the contact area between the nut and the drive fork.

Stage No. 3 Insufficient amount of lubricant

In rare cases, the cause of the squeak is the lack of lubrication on the input shaft of the gearbox. The defect is eliminated by applying graphite lubricant to the surface of the shaft. First remove the rubber bushing and spray lubricant using an aerosol can.

Replacing the clutch on a Lada Vesta with gearbox 21807 / jr3 / jr5 (mt)

Required tool:

• inspection hole;
• assistant;
• wheel chocks;
• jack;
• supports – 2;
• keys: wheel, 18 mm (2 pcs.);
• socket heads: 8, 10, 13, 16, 17, 18, 30 mm, Torx E10;
• bits: Torx T20;
• centering mandrel;
• mounting blade;
• hexagon – 5mm;
• tetrahedron – 8mm;
• empty container for transmission oil – 5 l;
• screwdriver: slotted, Phillips;
• hammer;
• barb or metal rod.

The procedure is as follows:

1. Drive into the inspection hole, engage the parking brake, and place chocks under the rear wheels.
2. Pump out the brake fluid from the brake system hydraulic reservoir to a level below the fitting to which the clutch hoses are connected.
3. Loosen the wheel bolts and hub nuts on the front wheels, raise the front of the car on a jack, install the supports and remove the jack.
4. Remove the wheels.
5. Remove the gearbox: Unscrew the 13 bolts securing the engine splash guard (protection) and the lower clutch housing cover..
6. Remove the battery and its shelf.
7. Remove the air filter housing.
8. Disconnect the gear selection cables by pressing the lock on the gearbox housing and disconnect the cable end. Press the fasteners securing the cable sheath to the box body. Remove the cable from the repair area.
9. Disconnect the hose supplying the brake fluid to the clutch slave cylinder and drain it.
10. Disconnect the wiring connectors: oxygen sensor, reversing light switch.
11. Drain the oil by unscrewing the plug with a 17" socket (21807) or a square socket (JR3 / JR5).
12. Remove the left fender liner by removing the screws using a T20 Torx bit and removing the clips using a slotted screwdriver.
13. Place a jack under the gearbox and lift it, unloading the left power unit support.
14. Unscrew the pinch bolt from the steering gear driveshaft and disconnect it from the steering column.
15. Remove the starter by unscrewing the nut from the power contact with a “13” socket and 3 mounting bolts with an E10 socket.
16. Disconnect the stabilizer struts from the shock absorber struts by unscrewing the nut from the ball joint pin with a 16mm socket, holding the pin from turning with a hexagon.
17. Remove the rear engine mount by unscrewing with a socket and an 18mm wrench the 3 bolts securing the mount to the front subframe and gearbox housing.
18. Disconnect the ball joints from the steering knuckles by unscrewing the nuts with a 18mm socket.
19. Remove the front subframe longitudinal members,
20. Remove the subframe by unscrewing the 4 bolts securing it to the body using a 18mm head.
21. Remove the front wheel drives: unscrew the hub nuts, pull the outer CV joint shank out of the hub. With the mounting blade resting on the inner CV joint, push the drive out of the gearbox.
22. Remove the bolts securing the gearbox to the cylinder block.
23. Remove the left power unit support by unscrewing with a 16" head the 4 bolts securing it to the body, and unscrewing with a 18" head the 2 bolts securing the support to the gearbox.
24. Remove the unit from the vehicle.

FakeHeader

Comments 14

I also wanted to get confused, bought the 10th cable, went to the service center, removed the old one and then surprise, the factory cable was 10 cm longer than the 10th (Kalina 1 ’13) and the bummer had to be replaced with a Kalinovsky one.

Like for your efforts. But. For example, I have a stock cable and am quite happy with it, sometimes it clicks once every now and then, but it doesn’t bother me because it happens very rarely. True, I myself re-adjusted it according to the manual and lubricated it, after the adjustment I pressed the pedal several times, the device tightened it and that’s it, I drive, nothing bothers me.

When I was working on getting rid of the squeak, I also wanted to do the same thing (although it can be cheaper to buy both the cable and the fastener at a disassembly) until half a year later nothing creaks. I installed it while there is a spring in the BZ. So far I’m happy with it and another option is to press in another loop and not change the entire cable.

and someone else had another option - remove the machine gun and weld a metal ring to the end of the cable.

you can't weld it to the cable. only if you fill it with tin. Separately solder the cable with acid and then pour it into the tube.

On the pedal side, the cable already has a metal tip with teeth. I saw someone had it welded to it.

I thoroughly lubricated the auto-tensioning mechanism and there was no squeaking or squeaking.

The only inconvenience of the standard clutch for you is clicking, and this is completely normal, does not affect the ride in any way, does not irritate me, an absolutely pointless idea, you will still change to the classic! There's also a gap you can adjust at the bottom, which is cool. Looks like the world has gone crazy! Sorry, I just can’t get my head around this alteration, you’re looking for problems for yourself! On the contrary, they did it well; there is no need to adjust anything during operation. For example, a friend of mine drove a two-wheeler with his leg stuck in the knee due to manual adjustment, until I adjusted everything properly for him, and one wonders why go against real improvement.

So everything started well and ruined everything with the last phrase. It's a pity, it's a pity.

The technique is not suitable for everyone. It won't work like that on a cable car.

The right thing to do! Good job!

Add to favorites, I've been wanting to do the same thing for a long time!

You have an old box with a short cable, on a new (cable) box 2181, there is a longer clutch cable, your method is only suitable for grants with black bumpers where the old box has a rocker.

Clutch malfunctions on AMT. Ways to eliminate them

The robotic version of the Lada Vesta box is not ideal. The most common breakdowns are associated with knocking, howling, roaring when shifting to higher gears.

A faulty release bearing is a source of extraneous sound. When replacing discs, the bearing must be replaced, regardless of the actual condition.

The AMT needs to be repaired (adapted) at a service station, but you can carry out preventive maintenance yourself.

Algorithm of actions:

1. Turn the ignition key to position “2”, depress the brake, and alternately move the gear lever. Check that the numbering on the dashboard matches the transmission.
2. Turn on the engine, listen to possible sounds coming from the transmission. Most likely, the release bearing, the pressure spring are faulty, or the clutch on the robot is overheating.
3. With the engine active, switch the selector to different positions. The transition should be easy, without crunching or knocking. Otherwise, the release bearing must be replaced. Less common are breakdowns of the electromechanical drive and burning of the clutch on Lada Vesta. The transmission control unit is subject to prevention.
4. Engage neutral gear, squeeze and release the brake. The car should not move.
5. Engage first gear and gently press the accelerator. The ride is quiet, without jerking.
6. We switch the AMT to manual control mode and change gears step by step. The transmission operates normally.

To carry out comprehensive diagnostics, contact certified service stations.

Conclusion

It is not difficult to independently diagnose an automatic or manual transmission. Another thing is repair, or as it is called for a “machine” - adaptation. It is impossible to do without the skills of specialists and specialized equipment. When purchasing components, carefully check the catalog numbers with the data specified in the instruction manual.

Clutch faults

In Vesta, depending on the type of transmission, the drive may differ. As a result, their problems may be different.

Problems with the hydraulic clutch

Brake fluid enters the working cylinder from the master cylinder through pipes. These two main parts of the mechanism have the following faults:

• excessive wear of rubber cuffs in cylinders;
• loss of brake fluid (lack of tightness at pipe joints);
• damage to cylinders, pipelines, etc. with the formation of cracks.

The hydraulic drive is very reliable, but can fail if air gets into the system. The main sign of ventilation is incomplete disengagement of the clutch. For this reason, broadcasts will be turned on with great difficulty or will be almost impossible to do. Typically, air enters the system when the level of brake fluid in the master cylinder reservoir is critically low, or due to a leak. To eliminate the malfunction, it is enough to purge the system; a special fitting is provided for this.

There is no need to adjust the hydraulic clutch transmission while the vehicle is moving.

The service life of the system depends on the driving style and operating conditions of the owner. A working clutch does not slip and completely transmits torque from the engine to the gearbox when the pedal is released. When pressing the pedal, the transmission must be completely disconnected from the control panel.

You can check for yourself the functionality of the Lada Vesta manual transmission hydraulic drive, which operates according to a specific algorithm.

If after performing all these steps no problems are found, the clutch can be considered working. The service life of the unit is reduced not only due to incomplete stopping or skidding, but also when driving off-road, with a maximum load, when driving with a trailer or tow, or an aggressive driving style. And even in the case of a seemingly harmless action, such as pressing the clutch pedal while the engine is running.

Malfunctions and methods for diagnosing them on AMT

The robotic gearbox of Lada Vesta, as well as Kalina, Grants, X-ray and others cannot be called ideal. Many car enthusiasts may have problems getting the robot used to working. The most common breakdowns are jolts, howls, squeaks, impacts, and jolts when shifting gears.

A worn release bearing can also be a source of noise. When replacing disks, they must also be replaced regardless of their condition. Repairing a clutch on an AMT is actually not easy, and the procedure is called "fitting in." Although this is carried out by specialists using appropriate computer programs, faults can be diagnosed independently.

To do this, follow these steps:

1. Turn on the ignition and make sure that the robotic transmission is working. Press the brake pedal and move the gearshift lever to any position. In this case, you need to ensure that all relevant icons are displayed on the toolbar screen. If the symbols appear, the gearshift lever is in neutral.
2. Start the engine, there should be no sounds from the gearbox. A characteristic howl may indicate an urgent replacement of the launch pad. Similar sounds can occur when transmission elements wear out.
3. Press the brake pedal and use the lever to move the selector to all positions. Broadcasts should turn on clearly, without creaking, knocking or howling. There may be several options here. A whine when engaging the clutch indicates wear on the release bearing. If the sounds disappear when the clutch is disengaged, it means the gearbox bearings are worn out. Jolts and clicks during gear changes indicate that the clutch is not fully disengaged. The cause may be, among other things, a malfunction of the electromechanical transmission clutch. In this case, it is necessary to check the transmission control unit for errors. And for this you will need special software, which can be purchased from an official dealer.
4. Place the gear shift lever in neutral with the brake pedal depressed. If you release the pedal, the car should not move.
5. Then you can run diagnostics on the go. Move the selector to the forward position, while gently pressing the accelerator pedal. The clutch should engage smoothly. When driving with sudden acceleration and braking, you should ensure that the gears rise and fall smoothly, without jerking or extraneous sounds.
6. Activate the manual transmission control mode and follow the steps described in the previous paragraph again. The gearbox should operate normally, without any extraneous sounds.
7. Stop the car and move the selector lever to the reverse position. When you press the accelerator pedal while releasing the brake pedal, the car should move in reverse. Cretins and idiots are unacceptable. Otherwise, this indicates damage to the clutch discs and friction shock absorber. If gears shift incorrectly or operate erratically, check the transmission control module for errors.

If it is not possible to restore the functionality of the AMT, you should try to switch the robot to manual control. This is especially true in the absence of spare parts. To do this, it is necessary to remove the gear shift mechanism and the electromechanical clutch drive. You will also need to disconnect the drive cable. The fact that the clutch is faulty is also indicated by the burning smell of the friction linings, as well as the lack of dynamics during acceleration. A variety of squeaks and other unusual noises may indicate a problem with the drive.

The creaking of the Lada Vesta clutch drive is considered the most common reason for contacting an official dealer.

The clutch does not disengage (drives)

Often, the Lada mechanism does not fully release due to the hydraulic clutch release. This could be due to poor drive adjustment, leaking fluid system, or cable wedge. Such breakdowns are easily eliminated. It is much more difficult when one of the elements of the main device breaks down.

If the mechanism does not completely disengage, it means that something is holding it: a deformed driven circle, the formation of dirt, rust in the spline joint, flywheel wear, as well as a change in the shape of the release fork, weakening of the pressure plate. In all cases, the disk will need to be replaced.

Methodology for identifying clutch noise on LADA cars

To identify the noise of the clutch release clutch on LADA Vesta, Granta, Kalina, Priora, XRAY AMT, Lada 4×4 cars, a special technique was compiled at AVTOVAZ. Specialists of LADA dealership centers refer to this instruction. The methodology was sent to the Lada.Online website by one of the site’s readers.

When assessing the malfunction of the clutch release bearing, it is necessary to take into account that at the moment all cars produced by JSC AVTOVAZ use a clutch without clearance, so the clutch release bearing is always preloaded and rotates with the engine running.

Clutch malfunctions on manual transmission. Ways to eliminate them

The hydraulic drive consists of a pipeline, main and working cylinders. The main part of the structure is located in the crankcase. Brake fluid simultaneously performs the functions of “hydraulics”

That is why it is so important to change DOT-4 in a timely manner and carry out unit prevention

The most common mechanical failures:

• airiness of the circuit, as a result of which the speeds are switched tightly, unclearly, with obvious effort;
• wear of the cuffs in the cylinders, resulting in audible clutch knocking;
• brake fluid leak, system depressurization;
• clutch pedal squeaking;
• third-party mechanical damage to cylinders and pipelines.

The design of the hydraulic drive is quite reliable, unlike the electromechanical one, and has a long service life. A breakdown can occur at the most inopportune moment due to air getting inside the circuit.

To independently diagnose the manual transmission hydraulic drive, follow the instructions:

If none of the above methods help, then contact a workshop for comprehensive diagnostics by specialists using digital equipment.

Why are the calipers knocking on the Lada Vesta?

The front and rear calipers on the Lada Vesta rattle for the same reasons, so the “treatment” schemes are the same. There are three objective sources of caliper noise.

Pad wear

Owners monitor the degree of wear of the pads (friction linings) when they change the brake fluid or every 2-3 thousand km.

Pad wear. Photo source: https://pricep-vlg.ru/remont-svoimi-rukami/stuchit-support-chto-delat/

What affects the abrasion of an element:

• The quality of the material depends on the manufacturer.
• Driving style - frequent and sharp braking accelerates depreciation.
• Operating conditions - off-road, sand, water, mountain roads - bring the time to replace the pads closer.
• The serviceability of the brake system - when the car has serviceable working cylinders and caliper guides, the wear of the pads occurs evenly.
• Anti-lock braking system - with it, the pads wear out more slowly.
• Transmission type - in cars with automatic transmission, the pads wear out earlier, because stopping is possible only when you press the pedal. On the “mechanics” they often brake the engine - the part wears less.
• Pad rigidity. Soft linings wear out faster, but the disc remains intact. Hard ones are the opposite: the disc suffers, but the pads hold up. The hardness of the pads is selected according to the series: sport, comfort, classic.
• Transport congestion - transporting heavy luggage and towing trailers has a detrimental effect on the condition of the friction layer.

How to determine the degree of depreciation:

• In move. If at low speed, hitting a speed bump, or driving on a dirt road, a knocking sound is heard, and disappears when braking, this indicates serious wear of the Vesta caliper. But similar symptoms plus beating in the pedal occur when the brake pads wear out or the disc is deformed - here replacing the calipers will not solve the knocking problem. When the pads are worn out, a characteristic squeaking pedal also appears.
• Visually. Remove the wheel and inspect the assembly. If the linings are worn out, replace the spare part.

Blame the guides

An important element of the brake system - the caliper guides in the Lada Vesta - can also cause the part to knock.

Caliper guides in Lada Vesta. Photo source: https://krsk.au.ru/14177557-napravljajuschie-supporta-lada-vesta-largus/

There are two problems with the guides:

1. Wear. The spare part is completely replaced.
2. The nest (landing site) has developed. Then they buy repair rubber bands. Put on the pin, they stop the knocking of the unit.

Sometimes the noise of the part is eliminated with lubricant: the caliper guides with rubber rings on the Lada Vesta are removed from the socket, a layer of heat-resistant copper paste for highly loaded surfaces is applied (Wurth SU 800, HUSKEY 341 Copper Anti-Seize).

Fastenings have come loose

A malfunction occurs when the bolts are loosely tightened at the service station. Fasteners also become loose due to vibration of the car on bad roads.

It is enough to tighten the fastenings, thereby eliminating the knocking of the calipers on Vesta.

Why does the clutch pedal click on a Lada Vesta - the degree of danger and the design of the assembly module

Design

The situation in which the box clicks when you release the clutch on the Lada Vesta or squeeze it in is typical for products from both companies. Experts assure that extraneous clicks are regarded as a defect. But apart from acoustic discomfort, they will not bring serious problems such as, say, bent valves due to untimely replacement of the timing belt on the Lada Vesta engine.

Clutch

The design diagram of the unit links the work of several structural units:

• Basket.
• Driven disk with friction linings.
• Hydraulic drive.

The basket part consists of a pressure plate with a friction insert and a diaphragm spring mounted on its body. The latter is bolted in the amount of six pieces to the engine flywheel. The driven part is located between the pressure plate and the flywheel. When the pedal is released, the discs are engaged and transmit torque from the engine to the gearbox.

Drive part

The structure of the hydraulic drive includes the following elements:

• Main cylinder.
• Pipelines.
• Working cylinder.
• Expansion tank.

It is noteworthy that the design does not provide forks. The working cylinder and the release bearing are connected in one housing and represent a single part with its own article number:

• 21810160118001 – manual transmission VAZ.
• 306201586R – Renault gearbox.

Total

If it clicks when you release or squeeze the clutch of a Lada Vesta in the cabin, the reason may be in the limit switch, pedal support or hydraulic cylinder design. Knocks in the engine compartment are more serious - the dealer is less likely to refuse to find out their cause, since this may indicate a malfunction of important parts - springs, release bearings, working cylinder.

As a temporary solution to a serious knock, drivers use the accelerator. You need to get used to this: when the clutch is released, the driver applies more gas and the knocking disappears. Typically, such actions indicate defects in the release support guide.

Car owners who have experience owning AvtoVAZ models - Priora, Granta and Kalina - know that one of the problems of these cars is the background noise that comes from the clutch pedal. However, as it turned out, this trouble did not bypass the Lada Vesta.

According to owner reviews, this problem can manifest itself in different ways. The following sounds are usually heard:

It is worth noting that the causes of these noises are different, and therefore it is necessary to analyze each situation separately.

Clicks

If the Lada Vesta clutch pedal clicks when it is released, as a rule, the reason is in the fixation axis of the clutch master cylinder rod. In this case, the axis moves along the thread, which provokes clicks.

To eliminate the problem, you need to arm yourself with a flat-head screwdriver and insert its end into the gap between the clutch pedal and the head of the master cylinder rod. In this case, you need to push the clamps and disconnect the rod from the pedal. To prevent shifts, it is necessary to place a metal washer under the tip.

In the case when the Lada Vesta clutch pedal knocks precisely at the end of its pressing, and the knock itself is heard from the engine compartment, it is necessary to dismantle the resonator using a TorX T27 wrench and bit, and then remove the boot from the transmission. When this is done, Bechem High-lub L2 MO grease should be applied to the gearbox hole on the release lever stop.

What should be the clutch pedal travel of the Lada Granta?

The free play of the clutch pedal on the Lada Grant is 146 mm - this is the distance from the base of the body to the back of the pedal (frog). The manufacturer allows a stroke play of 2.0 mm.

If the above distance does not meet the standard, we carry out the following adjustment steps:

1. In the engine compartment, pull the end of the cable forward as far as it will go. Using a caliper, measure the actual distance from the plastic nut to the drive fork. Factory standard 27 mm.
2. We carry out adjustments and adjustments as necessary (key to “10”).
3. We pump the pedal 2-3 times and take repeated measurements.
4. Inside the car we measure the pedal stroke, it should be equal to 146 mm.

If the pedal travel increases/decreases, the clutch cable must be replaced with a new one. To eliminate free play, use the Lada Granta clutch pedal repair kit.

Includes:

• pressure bushings;
• plastic compensator;
• spring.

Clutch adjustment on Lada Vesta cars

Since the knot is constantly engaged/disengaged, it needs fine adjustment. Adjustments are made on site during installation. The driven disk is centered, the basket, and the release bearing are also centered - they must fit exactly into the splines of the flywheel and the input shaft of the gearbox.

In the future, you can adjust the position of the clutch cable so that the pedal is softer/harder, so that it responds better to the command (during operation, the cable may stretch).

On a Lada with a robotic gearbox, the clutch is regulated by special programs. Adaptation can only be completed at an official dealer. However, the service life of the AMT clutch is significantly longer than that of a manual transmission.

If there is a knocking noise after replacing the clutch

As a rule, the cause of knocking after replacing parts is defective parts. In particular, there are dangling damper springs in the driven disk. Therefore, before installing such a spare part on a car, you need to carefully inspect it. Parts of the disk may also be poorly riveted. Knocks in the clutch area can occur due to a crack in the release bearing bushing (the bushings are often made of plastic). Even at the site where the bushing fits on the flange of the gearbox input shaft, play may form, which also leads to a knocking sound.

The knocking noise occurs due to a broken clutch basket petal, but such a defect occurs infrequently. Another reason for the knocking is a broken starter housing in the Bendix area; it rattles when the car moves. A tooth on the flywheel crown may break off, and it will also knock when touching the rotating parts.

Clutch device

On the Lada Vesta, as well as on all its modifications, including the X-RAY crossover and Cross versions, a standard unit with one disk is installed. The contact of the friction and drive disk occurs under the action of a spring. The main difference between the Vesta clutch and other AvtoVAZ models is the drive.

Structurally, the Vesta clutch is designed according to the standard type and consists of a pressure and driven disc that interact with each other. A pressure disk is installed in the basket; the basket itself is a steel body. The pressure plate in the basket is pressed using a special device in the form of a spring. The clutch basket is installed directly on the flywheel of the power unit and is firmly attached to bolted connections.

A disc with friction linings is placed between the flywheel and the drive disc. The driven clutch disc is also called a friction disc due to special linings attached to both sides. A damper with springs is installed in the center of the hole, designed to eliminate vibrations when the clutch is engaged. The friction disc is mounted through the hub onto the engine input shaft.

Features of the Vesta clutch hydraulic drive

The hydraulic drive consists of pipelines and two cylinders (worker and main). From the master cylinder, the pressure from the rod is transferred to the working one. This, in turn, exerts an influence on the clamping device through pipelines. The working cylinder is a module where the release bearing is also located. All this is mounted in the clutch housing.

Brake fluid performs the functions of working fluid. To ensure the reliability and performance of the hydraulic drive, it is necessary to promptly change the working fluid in accordance with the regulations. Problems with the hydraulic drive most often result from air in the system. In advanced cases, it will simply be impossible to change gears on the car.

Features of the electric clutch drive on Vesta

The electric drive, unlike the hydraulic one, is designed slightly differently; it acts directly on the clutch fork. When the fork is turned, the force puts pressure on the release bearing, which, in turn, presses on the petals of the pressure plate spring. The release bearing is reinforced and is constantly in operation, and the spring is always pressed against the coupling due to the absence of any gaps.

The release bearing does not require periodic maintenance, i.e. no lubrication is needed, the manufacturer took care of this too. The bearing lasts a long time and is simply replaced if it fails. You can recognize this by the characteristic noise. The release plate must also be replaced when replacing the driven or pressure disks, regardless of whether the bearing is in good condition or not.

Malfunctions in the operation of the hydraulic drive can be easily eliminated with your own hands; often it is enough to bleed the system and get rid of the air. But with an electromechanical drive, troubleshooting is much more complicated. A similar procedure on automatic and robotic gearboxes is called adaptation, and it is impossible to perform it without knowledge, skills and equipment. In such cases, the only correct decision is to contact an official dealer.

Today, the AvtoVAZ plant is actively introducing modern technologies into its cars, this also applies to clutches. Nowadays, structural elements that meet international quality standards are used for this. Friction linings and springs are much more reliable and durable.

How to understand that the calipers are knocking

The brake line begins with a pedal inside the car and ends with a pair of discs and pads. The driver’s force, when he presses the brake, is transmitted through a complex system, the penultimate link of which is the caliper on Vesta.

Spring from the “classic”. Photo source: https://lada-vesta.info/694-stuk-supportov-lada-vesta.html

The part performs important functions:

1. Presses the pads against the brake disc when the pedal is depressed.
2. Fixes the pads at a distance from the disc when there is no force on the brake.
3. Keeps the pads strictly parallel to each other and the disc - when misaligned, the braking surfaces quickly wear out and braking deteriorates.

The calipers on the Lada Vesta must work smoothly and be technically flawless. But at twenty thousand kilometers, when the car is still under warranty, an extraneous sound from the brake system appears from under the bottom. At dealerships, the issue is not resolved, citing the design features of the unit and the permissible noise level.

Drivers themselves have to get rid of the problem. But first you need to find out whether it’s the calipers on Vesta that are really knocking, and not the valves or other engine elements. To find the irritant, expensive diagnostics are not needed.

Noise when disengaging or engaging the clutch

A noise similar to rustling, grinding, a slight hum, or howling appears when the unit is turned off. When turned on, it disappears. With almost one hundred percent probability we can say that the release bearing has worn out. Replacing it does not require removing the entire component. However, its untimely replacement leads to failure of the entire mechanism. A squelching, whistling sound when you press the pedal is associated with wear on the master or slave cylinders. There is pressure, the broken part does not hold it - the liquid breaks through further, making noise. The noise in the box disappears only when the clutch is disengaged.

The second type of sound is constant, disappears only when the gear is disengaged, and is located in the area of ​​the gearbox. The nature of the “tinkling” of Lada Vesta is a weakened connection between the three main nodes.

The worn driven circle loses its volume and begins to dangle inside the housing. Worn dampers are not able to press the circle tightly. The box is not tightly connected to the engine. Replacing the clutch on a manual gearbox

The procedure is very complicated. The main difficulty is not even that the gearbox needs to be completely removed, but that during assembly it needs to be centered in weight with the flywheel. Repairs can be done with your own hands. But if you do not have the proper experience, saving is not worth it, because we are talking about direct contact with the most important “organs” of the Lada. In general, the process looks like this:

• We de-energize Vesta, remove all attachments that block access to the gearbox mounting bolts (air filter, pipes);
• To prevent the loose internal combustion engine of the Lada from falling, we will hold it with a small diamond-shaped, barrel jack;
• We unscrew the power fasteners so as not to drain the oil, dismantle the box assembly with drives;
• We loosen one by one, then unscrew the fastening elements of the engaging mechanism housing (the bolts here are strong, but small in diameter, you need a good 8mm wrench). We remove the part and find the defect;
• We install the new product, adjust the position of the driven circle inside with a special tool;
• We change the release bearing in the box housing;
• Smoothly, without tilting, the input shaft of the gearbox hits the flywheel splines;
• We check the operation of the drive.

Not all operations are described here. For example, in order to remove the gearbox with drives, it is necessary to dismantle the suspension arms and so on.

The connection mechanism between the box and the engine is a “vitally” important element. Like any detail, it loves careful handling and timely service. The mechanism is directly connected to the internal combustion engine and gearbox; prolonged use of a faulty part can damage these two components. Do not neglect any suspicions that a unit is malfunctioning. May the car serve you for a long time.

The proper functioning of the Lada Vesta manual transmission is characterized by a monotonous, quiet sound. Violations of the factory condition occur: owners often complain of a clicking sound when operating the clutch. The official response on this matter has been disappointing. In 90% of cases, no action is even taken to eliminate the malfunction; arguments are only given in favor of supposedly additional features of the normal functioning of the mechanism.

If after replacing the clutch the car jerks

For example, before the repair, the car did not pick up speed well, it was slipping, and the clutch pedal was activated at the very top. All the signs of a worn driven disc were present. After replacing the disk, the car began to jerk. What could happen after the repairs were carried out?

1. The issue may be a defective part. This is not so rare when it comes to non-original spare parts. In Russian-made cars (VAZ, GAZ, AZLK, IZH), defects also occur in factory parts. That is, the driven disk is simply curved. On the clutch basket (drive disc), the pressure petals may be at different levels, then the release occurs unevenly and the car jerks.
2. The car may jerk due to clutch adjustment. More precisely, it was not performed after replacing the disk. The linings of the new part are much thicker; in this case, the clutch pedal “takes at the very end”. When starting off, the car moves jerkily, and the gear shifts into gear with a crunch.
3. The car jerks due to the replacement of not all the parts that needed it. In particular, the cause of jerking is the worn surface of the flywheel under the driven disk. If the flywheel has not been replaced, there may be jerking when driving, and the car may also slip.

There is an opinion that the car may jerk due to incorrect installation of the clutch disc, that is, it was installed on the wrong side. Theoretically, this is possible on some car models. But the disc is designed in such a way that even depressing the pedal normally and moving off will not work with this installation.

Sachs clutch

The production of clutches for various car brands also has its own innovations. The clutch, like all other mechanisms, wears out quickly, and every driver wonders how to choose the right mechanism. Driving style and operating conditions are directly proportional to service life. Therefore, Sachs specialists, taking into account all the wishes of drivers, have released completely new, environmentally tested flywheels, release bearings, clutch discs and slave cylinders, compact clutch units and other equally interesting design solutions. These new products include:

1. MZ type clutch basket with pull-out action.
2. XTend with automatic wear compensation.
3. Dual-mass flywheel ZMS.
4. Release bearing type CSC.
5. Ultra-compact clutch unit (for sports cars).

Which clutch to install is up to you, but if the driver takes good care of his car, replacement can be done after 100,000 km. The clutch pedal is a kind of indicator of the technical condition of the engine and transmission.

Hi all. I recently talked about the reasons for clutch pedal failure, as well as ways to solve this phenomenon. Today I decided to supplement the series of articles about the clutch with another, no less relevant topic - the creaking of the clutch pedal.

You will learn about the reasons why the clutch pedal squeaks and how to get rid of it.

I’ll say right away that the creaking of a pedal, whether it’s a clutch or a brake, in most cases does not affect its functionality and, by and large, is a common irritant that infuriates many motorists. Creaking or grinding of pedals rarely indicates serious damage, but before you give up on it with the words “I still have nerves of iron,” I recommend making sure that the problem is really not worth attention.

Clutch slipping after replacing all its parts

After replacing all elements, adjustment is required, but many car owners ignore this point. The cause is slipping, the car accelerates slowly, the engine speed does not correspond to the speed of the car. The engine just roars, and the car is driving quite slowly, as they say, slipping.

In cars with a mechanical clutch cable, adjustment is made by the cable itself. In hydraulically driven machines, this process is carried out using a clutch rod. In modern cars, you often come across rods that do not have adjustments. But this does not mean at all that it cannot be produced. In such cases, adjustment of the clutch pedal itself is provided, but not everyone knows about this possibility.

The machine often slips due to wear on the flywheel surface in the place where the surface works in tandem with the driven disk. The mistake of many car owners is that they first of all change the disk, while completely forgetting about the flywheel. As a result, you have to disassemble the car twice to fix the problem.

Signs of clutch failure

The occurrence of malfunctions in the Vesta clutch mechanism is most often associated with improper operation (inexperience of the driver, aggressive driving style), an initial defect in the part, or breakdown of other components interacting with it. Of course, you will immediately notice problems with the clutch - the car will begin to behave differently:

• Gears are difficult to shift/do not work at all;
• Pedal too soft/hard;
• The car jerks;
• The device is activated in the upper position of the pedal.

There can be many reasons for this behavior of Vesta, and not all of them are related to the intermediate part between the internal combustion engine and the gearbox. Often the problem comes from the fluid system. There may be a malfunction of the brake master cylinder, clutch slave cylinder, damaged hoses, a simply low DOT4 level or an air lock. Such problems (especially problems with the cylinder of the unit) have exactly the same effect as the failure of the entire unit. The clutch consists of a housing cast together with the drive/pressure plate (basket) and the driven disc. The release bearing of the Lada Vesta acts on the petals of the basket, which, in turn, with the help of damper springs, press the inner disk away from the flywheel - the clutch opens. The bearing moves either under the influence of the hydraulic pedal drive (manually) - manual gearbox, or from the actuator (automatically) - manual gearbox. These parts can fail: more often - the release mechanism, less often - the basket body. Let's take a closer look at the most common “breakdowns”.

Defects that appeared after replacing the clutch

What does it mean to replace the clutch? This action means changing the driven or driven clutch disc; often both parts are changed at once. In this case, the release bearing must also be replaced. After such an operation, side defects are suddenly revealed that were not there before the repair.

If we think logically, then there are few reasons for the appearance of new malfunctions. Typically this is:

• Unqualified repairs;
• Defect of new spare parts;
• Erroneous diagnostics, as a result of which not all or the wrong parts were replaced, and previously hidden problems manifested themselves in full.

In general, the issue of the appearance of new unpleasant signs is very difficult and is individual in each specific case, but these signs have common characteristic features.