Replacing the clutch slave cylinder VAZ 2107 injector

Nobody wants to experience discomfort while driving, especially if it is associated with problems in driving. Owners of domestic “classics” have to devote more time and effort to the condition of their car, because they are used to doing everything with their own hands. We can say with complete confidence that if a car owner has already mastered the process of wheel alignment adjustment , then he can also repair the hydraulic drive of the transmission clutch, just study the technology.

VAZ 2107 clutch: device

The “Seven” has a dry single-disc clutch. The clutch hydraulic master cylinder is located directly under the pedal, when pressed, the pusher moves, acting on the master cylinder piston, creating pressure. The brake fluid that fills the hydraulic drive is squeezed out and flows into the working cylinder.

The piston of the working cylinder is connected to the clutch fork by a pusher. When you press the pedal, the latter moves the fork, it displaces the release bearing and separates the support and pressure discs. As a result, the torque from the crankshaft flywheel is no longer transmitted to the gearbox and it becomes possible to change gear.

If the clutch unit malfunctions, when you press the pedal, the gearbox shaft continues to rotate and changing gears becomes difficult or even impossible. If the clutch is adjusted incorrectly, the discs may slip, which is accompanied by accelerated wear.

You cannot continue to drive a car with a faulty clutch - both the clutch discs and the gearbox may be damaged. Therefore, at the first sign of a malfunction, you should start repairing and adjusting it.

Replacing the clutch master cylinder VAZ 2107

The simplest way to repair a VAZ 2107 clutch is to change the worn cylinders (main and slave). Their price is low, and the labor intensity of the operation is much lower than when carrying out repairs. Therefore, car owners often prefer to replace rather than repair clutches.

Let's start by replacing the master cylinder. The order of operations is as follows:

• Drain the brake fluid from the clutch reservoir into another container. This can be conveniently done using a syringe.
• Loosen the clamp and remove the hose from the master cylinder fitting.

• Unscrew the fitting of the metal tube going from the master cylinder to the slave cylinder and disconnect the tube.
• Using a 13mm wrench or a socket with an extension, unscrew the two nuts securing the master cylinder to the body bulkhead and remove the master cylinder.

The new clutch master cylinder can now be installed. Before doing this, you should check the condition of the flexible hose of the clutch reservoir. If it cracks at the end, it needs to be trimmed slightly or replaced with a new one.

When installing a new cylinder, it is necessary to ensure that the clutch pedal drive rod fits inside the cylinder. For convenience, you can ask your partner to slightly press the clutch pedal and hold it. Then follows:

• Install the master cylinder onto the studs and tighten the nuts.
• Attach and tighten the metal tube fitting.
• Place the pipe from the clutch reservoir and tighten the clamp.
• Fill the reservoir with brake fluid, following the level marks.

The clutch master cylinder has been replaced.

Removing and installing clutch slave and master cylinders

1. Repair manuals
2. Repair manual for VAZ 2107 (Zhiguli) 1982+.
3. Removing and installing clutch slave and master cylinders

To remove the master cylinder, unscrew the two nuts that secure it on the studs to the pedal bracket and disconnect the flexible reservoir hose.

To install the master and slave cylinders, perform the above operations in reverse order.

After filling with working fluid, pump the hydraulic drive.

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1. Operation and maintenance of the vehicle 1.0 Operation and maintenance of the vehicle 1.1. Vehicle operation 1.2 Vehicle maintenance

2. General data 2.0 General data 2.1 Technical characteristics of vehicles 2.2 Controls and monitoring devices 2.3. Ventilation control and interior heating

3. Engine 3.0 Engine 3.1 Removal and installation of the engine 3.2 Disassembling the engine 3.3 Possible engine malfunctions, their causes and methods of elimination 3.4 Engine assembly 3.5 Bench tests of the engine 3.6 Checking the engine on a car 3.7. Cylinder block 3.8. Pistons and connecting rods 3.9. Crankshaft and flywheel 3.10. Cylinder head and valve mechanism 3.11. Camshaft and its drive 3.12. Cooling system 3.13. Lubrication system 3.14. Supply system

4. Transmission 4.0 Transmission 4.1. Clutch 4.2. Gearbox 4.3. Cardan transmission 4.4. Rear axle

5. Chassis 5.0 Chassis 5.1. Front suspension 5.2. Rear suspension 5.3. Shock absorbers

6. Steering 6.0 Steering 6.1. Inspection, check and adjustment of steering 6.2. Steering mechanism 6.3. Steering rods and ball joints 6.4. Swing arm bracket

7. Brakes 7.0 Brakes 7.1. Checking and adjusting the brakes 7.2 Possible malfunctions of the brakes, their causes and methods of elimination 7.3 Bracket for the clutch and brake pedals 7.4. Vacuum booster 7.5. Brake master cylinder 7.6. Front brakes 7.7. Rear brakes 7.8. Rear brake pressure regulator 7.9. Parking brake

8. Electrical equipment 8.0 Electrical equipment 8.1 Electrical equipment diagram 8.2. Battery 8.3. Generator 8.4. Starter 8.5. Ignition system 8.6. Lighting and light signaling 8.7. Sound signals 8.8. Windshield cleaner 8.9 Headlight cleaner 8.10. Heater electric motor 8.12. Control devices

9. Body 9.0 Body 9.1. Doors 9.2 Possible body malfunctions, their causes and methods of elimination 9.3. Hood, trunk lid, bumpers 9.4. Body glazing 9.5. Windshield and headlight glass washers 9.6. Instrument panel 9.7. Seats 9.8. Heater and ventilation of the body interior 9.9. Body frame repair 9.10. Paint and varnish coatings 9.11. Anti-corrosion protection of the body

10. Modification and equipment of VAZ-2107 cars 10.0 Modification and equipment of VAZ-2107 cars 10.1. Car VAZ-21072 10.2 Car VAZ-21074 10.3. Car VAZ-21073-40

11. Appendices 11.0 Appendices 11.1 Appendix 1. Tightening torques for threaded connections* 11.2 Appendix 2. Tools for repair and maintenance* 11.3 Appendix 3. Used fuels and lubricants and operating fluids 11.4 Appendix 4. Basic data for adjustment and control 11.5 Scheme

Replacing the clutch slave cylinder VAZ 2107

Removal of the working cylinder should be done from the inspection hole or using a lift. The order of operations is as follows:

• Remove the return spring from the slave cylinder bracket.
• Unscrew the fitting of the tube coming from the master cylinder. To prevent brake fluid from leaking from it, you can put a cap on it, removed from the cylinder bleeder fitting, or direct it into a container prepared in advance.
• Unscrew the two bolts connecting the slave cylinder to the gearbox and remove them together with the plate.
• Remove the clutch slave cylinder.

The new working cylinder is installed in the reverse order of removing the old one.

After replacing any of the cylinders, the hydraulic drive system must be pumped. The work must be carried out together with a partner. This is done like this:

• Place a hose on the fitting of the working cylinder and immerse its end in a prepared container for brake fluid.
• Depress the clutch.
• Unscrew the fitting on the working cylinder 1 turn.
• Wait until air bubbles stop coming out and tighten the fitting.
• Repeat the operation until air stops coming out of the fitting. At the same time, monitor the fluid level in the clutch reservoir.
• Tighten the fitting and put on the cap.

There are several ways to bleed the clutch on a VAZ 2107, here is a video about the most popular ones

Clutch check

To check the clutch bleeding, just follow a simple sequence.

1. Raise the handbrake all the way.
2. Depress the clutch and start the engine.
3. Try to change gears, but no extraneous sounds or blockages should appear.
4. Engage a random gear and smoothly release the pedal.
5. Approximately halfway through the stroke, the engine should begin to twitch and stall. This indicates proper operation of the coupling device.

The device of the clutch slave cylinder VAZ 2107-2101

This part in the clutch system plays a fairly important role as the final link in the distribution of hydraulic load. In the classic VAZ clutch system, the master cylinder is located, respectively, in the engine compartment near the gearbox and has a fairly convenient outlet for repairing the VAZ 2106 clutch slave cylinder. The part consists of several main parts, which together form a single small but important unit:

1. The piston directly serves to squeeze out the fluid located in the main tank (as usual, special brake fluid is poured there). When the clutch pedal is pressed, it is the piston that activates the hydraulic pressure mechanism and applies forceful pressure to the fork in the clutch.
2. The case is the fundamental part in which the entire mechanism is enclosed. The outer part in modern versions is made of durable plastic. In early models on old Soviet designs, a metal body is sometimes found, but this design is less reliable not only due to age, but also due to the likelihood of corrosion.
3. The rod is driven by a piston and acts as a pusher both when the pedal is pressed and after it is released. When pressed, this part pushes liquid into the system, and then closes the housing for liquid.
4. The protective cap serves to maintain integrity inside the system when liquid enters. Otherwise, it is simply called a cover that covers the housing parts from excessive contact of substances with the mechanical parts of the unit.
5. The spring acts as a single unit together with the piston when the gas pedal is pressed and actually “serves” the unit during the return action. One of the main reasons for system failure is often the wear of the spring, which causes the cylinder to not close properly and the fluid to escape beyond the closed circuit.
6. A valve for bleeding air, which is also a common cause of failure of the entire part due to its inoperability. This part is designed to remove excess air during piston operation. Excess air, if present in the system and liquid penetrating inside, leads to the disappearance of the clutch, which can lead to an emergency. It is the valve that serves to remove the formed air, but for some reasons this unit can wear out and fail. Moreover, despite its simple design, such a part can rarely be repaired and most often must be completely replaced, not only because of the impossibility of the repair itself, but mostly because of the low cost of both the complete assembly and its individual parts.

Video.

Welcome! Clutch slave cylinder - not all people know what it is, but still from time to time you have to replace it, but how can you replace it if not everyone knows what it is? In short. In the car we are currently considering a classic, there are two clutch cylinders, one of which is the main one and the other is the worker. They perform almost the same function; when you press the clutch pedal, the piston (Indicated by a green arrow) which is located inside the clutch master cylinder moves and thereby pushes the brake fluid further.

At this time, the brake fluid continues its path and thereby rests against the same piston (Indicated by a blue arrow), only which is already located in the clutch working cylinder, and after the brake fluid rests, it begins to push the piston and therefore it moves to the front and there, by pressing the fork, the clutch in the car disengages.

In general, we understand that there must always be brake fluid in both cylinders, but why is it needed, some of you may ask? The thing is that brake fluid is not compressible, and therefore it is used both in the brake system and in the clutch drive, in general, let's get back closer to the topic.

Note! To replace the clutch slave cylinder with a new one, you will need to stock up on: A basic set of wrenches, as well as pliers, and you may also need about 1 or 2 liters of new brake fluid!

Summary:

Where is the clutch slave cylinder located? It is located next to the box, and to be more precise, it is secured with two bolts on the clutch housing itself, so you will only be able to see it unobstructed if you are under the bottom of the car, or if you look deep into the engine compartment, For more details on its location, see the photo below, it is indicated by an arrow:

When should you replace the clutch slave cylinder? As we already understood, inside the working cylinder there is brake fluid due to which the clutch is disengaged in the car, but it happens that over time this cylinder becomes unusable and cracks begin to appear in its body and thereby the liquid that is in it gradually begins to come out of it be, it is very easy to understand if you visually look at it, and it can also be understood without looking at it at all, but how to do this you ask?

The thing is that if the cylinder becomes unusable and brake fluid begins to come out of it, then the first thing that will happen to the clutch pedal is that it will become very easy to press, that is, the system will not be airtight, so to speak, and if the system is not is sealed, then the clutch will practically not work, that is, you press the pedal, it is pressed very lightly and the clutch does not engage, this is perhaps one of the most common problems that happens when the clutch slave cylinder fails.

Note! But we must not forget that light engagement of the clutch pedal can also be caused due to other reasons, for example, a leaking clutch master cylinder, which in this case will also need to be replaced! (For information on how to replace the master cylinder and find out what malfunctions require it to be replaced, see the article entitled: “Replacing the clutch master cylinder”)

The principle of operation of the clutch slave cylinder VAZ 2107-2101

The operating principle of this part is quite simple, however, despite its small dimensions, the function of pushing fluid into the system is very important in the operation of the entire clutch. The principle of operation of this unit is to briefly disconnect the gearbox and the motor itself during gear shifting. When you press the clutch pedal, fluid enters the master cylinder under the influence of a piston, which also presses on the clutch fork. This, in turn, acts on the gear selection clutch through a bearing, which also presses on the driven disk, disengaging the clutch.

Subsequently, when the pedal is released, the cylinder is returned to its original position by means of a spring, and the liquid flows back into the tank. The clutch also returns to its original position regardless of whether a particular gear is engaged or the vehicle is in neutral. Thus, this part is an important link during switching and acts as the main part of the hydraulic drive system. The advantage of this system is the simplicity of the design with the presence of a small number of mechanical parts, thereby limiting the friction process and increasing the overall resource. It is also worth noting the ease of repair and low cost of spare parts.

Selecting a clutch slave cylinder for a VAZ 2107-2101

On the domestic market of automobile parts there is a huge number of parts and spare parts for classic cars of the VAZ family. In addition, there are a large number of repair kits for the VAZ 2101 2107 clutch slave cylinder. Over the decades of production of these models, the design has not undergone significant changes, accordingly, the parts must be sharpened and completely match in all respects. Moreover, on all rear-wheel drive models, virtually the same unit is installed, which has similar characteristics and dimensions. The main criterion when choosing a part to replace the VAZ 2101 clutch slave cylinder is the factor of quality and reliability of this unit. Taking into account the large supply from various enterprises, sometimes not in any way connected with the manufacturer, and the varying costs, the quality remains very unstable.

The optimal solution when choosing this system is to purchase an original repair kit or the entire assembly from the automaker. Although the cost of such a unit is often higher than its third-party competitors, the likelihood of receiving a counterfeit product is still disproportionately lower, and, given the importance of the unit in the process of driving a car, it is not possible to rely on chance.

Malfunctions of the clutch slave cylinder VAZ 2107-2101

The most common system malfunctions, which can lead to complete failure of the entire unit, include:

1. Presence of excess air in the system. This situation can arise if there are cracks in the rubber pipes or sealing joints, as well as as a result of fatigue of the plastic housing and the presence of microcracks. In this case, a complete replacement of the failed part is carried out, since excess air does not allow creating the necessary pressure to open the bearing and clutch, thereby the owner simply will not be able to engage the gear correctly.
2. Wear due to various reasons of the components of the assembly themselves. Thus, as a result of the breakdown of any part of the assembly, the general principle of operation is violated, since, despite the simplicity of the design, each element, performing a specific function, directly affects the performance of the system as a whole. In this case, in addition to simply replacing the entire system, the option of disassembling and eliminating a specific malfunction may be considered by replacing a certain component in the form of a part using a repair kit.

Do-it-yourself replacement of the VAZ 2107-2101 clutch slave cylinder

Carrying out independent repairs of this drive will require the owner not only to have a certain set of tools in the form of various keys with different head sizes and repair kits, but also certain repair skills. Self-repair is quite within the capabilities of an experienced owner of a VAZ classic. Also, the owner will definitely need a lift or MA in the garage, since the part is located in the lower part of the engine compartment, in close proximity to the gearbox.

For beginners, in most cases you will need an assistant. In total, there are two main types of work with this part - removing and installing a new device into the system, which will not require additional time, and repairing the original part with complete or partial disassembly, which will require a sufficient amount of time, this directly depends on the experience of the owner.

How to remove the clutch slave cylinder VAZ 2107-2101

The procedure for removing the unit as a whole takes place in several main stages:

1. All fluid must be removed from the clutch reservoir. To do this, you will need a regular small volume syringe. This tank is located in the upper part of the engine compartment. This is necessary to prevent the substance from spilling onto the owner or outside the system.
2. After this, it is necessary to loosen the fastenings of the tank itself and, if necessary, dismantle it. At the same time, use a 13-mm wrench to loosen the rubber pipe leading from the tank to the master cylinder, thereby freeing up free access to the system.
3. After this, also use a 13 key to disconnect the part from the other clamps of the clutch system and unscrew the 2 mounting fasteners using a regular screwdriver, which hold the body in the seat. After this, the part can be completely removed.

Repair of clutch slave cylinder VAZ 2107-2101

Repair work also takes place in several stages and is carried out immediately after dismantling the device itself:

1. Using a 22mm socket wrench, unscrew the plug and remove the boot along with the locking ring.
2. Then move the VAZ 2106 clutch slave cylinder rod all the way and then remove the fitting from the seat. This opens access to all internal parts of the device.
3. These parts are located inside the housing and are arranged in a certain sequence.

Installation of the clutch slave cylinder VAZ 2107-2101

Reinstallation of a repaired part or installation of a new device occurs in the reverse order:

1. The tank and cylinder linkage assembly must be secured in the standard mounting points in the engine compartment using keys.
2. After this, it is necessary to connect the main part with the branch pipes of the vehicle systems, while choosing the correct tightening torque for the clamps.
3. After this, connect the tank to the general hydraulic drive system and fill the liquid in accordance with the level.

Let's move on to removing the clutch

Let's move on to work “under” the car.

Disconnect the driveshaft from the box.

We unscrew the fastenings of the gearbox safety bracket, as well as the tube from the gearbox. There is no need to disconnect the cardan, since the box does not need to be removed.

Unscrew the nuts that secure the box to the bottom of the car.

Disconnect the wires from the reverse sensor.

Remove the fork spring, which is responsible for disengaging and engaging the clutch, and disconnect the two bolts from the clutch working cylinder.

Remove the clutch pan. Then remove the four clutch housing mounting bolts.

Using a pry bar, push the box as far back as possible. This way she won't get in the way.

Now you will see the flywheel, the basket is secured with six bolts.

Unscrew them and the clutch will be removed along with the release bearing.

Pull out the clutch basket and disc and look at them. If they are in order, then there is no need to change them, or replace them if necessary.

Before starting assembly, it is recommended to lubricate the splines of the gearbox input shaft and polish the clutch disc with a dry cloth.

It is necessary to adjust the location of the clutch disc to the crankshaft bearing. This must be done using a special mandrel. It can be purchased at any auto store. If everything is done correctly, the mandrel will come out freely from the bearing.

Read more: Characteristics of the generator for the VAZ 2101, its connection diagram, disassembly and assembly

That's all, you replaced the clutch yourself, now you can be confident in the reliable operation of your car's clutch.

Tips and tricks

As the main advice when choosing this unit, you should mention the quality of materials when purchasing. The purchased parts must have the manufacturer's markings and series and batch numbers. Many enterprises have their own information resources where you can check the originality of a part by simply checking the batch numbers and the specific part.

Also, in the process of replacing the VAZ 2104 clutch slave cylinder, it is necessary to strictly follow the sequence of actions and accurately calculate the tightening torque of the hoses and pipes from the fluid tank to the main part in order to avoid cracking of the rubber and plastic parts of the body.

Also, once every few thousand kilometers, it is necessary to carry out an inspection of the entire assembly, since the vast majority of cars of these models have significant mileage, the likelihood of unexpected breakdowns is quite high.

What is a hydraulic drive

The clutch in a car is controlled using a pedal. The force from it to the disk can be transmitted in two ways:

1. Using a cable.
2. Hydraulic drive.

The simplest and most common is the first method, while the “seven” uses the second. Its essence, without going into details, is as follows.

The hydraulic drive consists of two cylinders connected by tubes and hoses. It is designed so that pressing the clutch pedal leads to a significant increase in pressure in the system. It is mechanically transmitted to the driven disk and disconnects the transmission from the engine. The key elements of the system are two VAZ-2107 clutch cylinders: the main and the slave. One of them transforms the force acting on the pedal into excess pressure in the system tubes, the other does the opposite work, acting on the driven disk.

Dismantling the hydraulic drive

To perform the operation we will need:

1. container for operating fluid and a large-volume syringe.
2. set of wrenches and sockets;
3. screwdriver and pliers.

The order of work is as follows:

1. Brake fluid is pumped out from the expansion tank of the master cylinder of a VAZ 2107 car using a syringe. A rubber tube is disconnected from the drive, from which the remains are also poured into the prepared container. If liquid gets on paint surfaces, they must be wiped with a damp cloth.
2. Using an open-end wrench set to “10”, unscrew the fitting of the pipeline connecting the main and working hydraulic drives.
3. Using a “13” socket and an extension adapter, unscrew the nuts holding the assembly to the engine compartment panel.
4. To remove the master cylinder from the studs, simply press the clutch pedal, this will move it out of place, after which you can pull it out by hand.

The work on removing the unit is completed, and you can begin installing the spare part.

Clutch design VAZ-2107

The main components of the “seven” hydraulic drive are:

• Main cylinder.
• Metal tube system.
• Clutch slave cylinder VAZ-2107.
• Pedal equipped with a pusher.
• Clutch fork.

The master cylinder is combined with a reservoir into which brake fluid is poured. It is located under the hood of the car, on the wall of the engine compartment. This location allows for a mechanical connection between the cylinder and the clutch pedal. For this, a steel rod, the so-called pusher, is used.

The working cylinder is attached with two bolts to the gearbox housing and is connected to the fork by a rod. The entire length of the metal rod is threaded, which allows you to adjust the clutch. Both cylinders are connected to each other by a copper tube and hoses.

Hydraulic drive installation

Replacing a mechanism involves purchasing it in a retail network or via the Internet. Installation work is performed in the following sequence:

1. The clutch master cylinder of the VAZ 2107 is put on the studs and pushed all the way to the base.
2. The nuts are screwed onto the fasteners and tightened with a wrench to “13”.
3. The union nut of the pipeline laid to the working hydraulic drive is screwed into the main cylinder.
4. The rubber tube is connected to a plastic connecting element and secured with a clamp.
5. The expansion tank is filled with brake fluid, which enters the main and slave cylinders of the clutch through tubes. Replacing the fluid in the system is mandatory due to wear products.

The principle of operation of the VAZ-2107 clutch

The force of pressing the pedal is transmitted via a rod to the master cylinder of the VAZ-2107 clutch. The liquid contained in it is squeezed out into the pipeline. Due to the tightness of the system and the absence of air in it, the force is transmitted to the working cylinder. The rod, extending, acts on the fork, which presses the driven disk. Releasing the pedal causes the rods and brake fluid to move back. As a result, the system returns to its original position.

It is obvious that the basis of the hydraulic clutch drive of the “seven” is the cylinders. They bear most of the load in the form of repeated movement of the rod, during which hydraulic pressure also acts on the internal elements. Therefore, the cylinders are the first to fail. Since they are dismountable, and corresponding repair kits are available for sale, some faults can be repaired yourself. True, more often car enthusiasts prefer to change the entire cylinder.

The fact is that in this case, labor costs for repairs are often inadequate to the cost of the assembled unit. For example, the price of a VAZ-2107 clutch master cylinder is about 1,500 rubles, and you will have to spend a decent amount of time restoring it, especially if you have no experience. However, whether to repair or buy a new one is up to the owner of the “Seven”.

Design and operation of the VAZ-2107 GCS

The clutch master cylinder is a rather complex assembly consisting of a large number of parts. However, in order to understand the principle of operation, it is enough to name the main ones. These include:

• main body with brake fluid reservoir;
• cylinder piston;
• union;
• return spring.

The principle of operation of the cylinder resembles the operation of a conventional piston pump and is as follows: pressing the clutch pedal causes the movement of its pusher, which acts on the piston. Moving forward, it creates pressure in front of itself, which is transmitted through tubes and hoses to the working cylinder. Its rod extends and displaces the clutch fork, the driven disk disengages the transmission. When the pedal is released, the reverse process occurs.

What reasons will indicate a malfunction?

The following signs will help you understand that the clutch master cylinder is malfunctioning:

• a sharp decrease in the level of working fluid in the tank;
• traces of leaks in the area where the working and main cylinders are located;
• a kind of “failure” when pressing the clutch pedal;
• inability to fully press the clutch pedal.

Among the main types of malfunctions noted by experts, it is worth highlighting the following:

• malfunction of the cylinder itself;
• worn cuffs or piston;
• filling the system with low-quality brake fluid, which may contain both numerous dust particles and an excess of moisture.

To eliminate the causes of the malfunction of the main element, it is time to use two methods - replace the one that has become unusable with a new one or eliminate a minor breakdown by repairing it yourself. However, it is worth understanding that only rubber cuffs and the body can be repaired, and besides, repairing components will not always give the expected result. It should also be noted that as for the boot, it also needs to be inspected for the presence of large contaminations. According to experts, it is best to completely replace the cylinder, especially since its cost does not exceed 550 rubles.

Typical faults

A large number of rubber gaskets and seals are used for various seals in the cylinder. Most often, they are the reason for the unsatisfactory performance of the GVC. The symptoms will be the following:

• the clutch does not disengage;
• the pedal is not pressed;
• brake fluid leaks on the cylinder body;
• The clutch pedal does not return to its original position.

Such signs are characteristic not only of a malfunction of the main circulation system. Only leaks of brake fluid on the body indicate it reliably. You will have to repair or change the clutch master cylinder of the VAZ-2107, the price in the second case will be noticeably higher, but the service life will also be longer.

Removal and repair

Regardless of whether the owner decided to restore the GVC or preferred to buy a new one, the first step is to dismantle the old one. To work you will need:

• set of spanners;
• medium sized screwdriver;
• pliers;
• brake fluid for topping up;
• repair kit for clutch cylinder VAZ-2107 (in case of repair);
• small container for draining brake fluid.

The sequence for removing the clutch master cylinder is as follows:

1. It is necessary to drain the brake fluid from the reservoir. This can be done using a syringe. However, it will be more professional and faster to loosen the clamp, remove the hose from the fitting and quickly place a suitable container under it.
2. Using a 10mm open-end wrench, unscrew the metal tube from the main center and move it to the side.
3. Using a 13mm socket, unscrew the two nuts securing the cylinder to the engine compartment bulkhead.
4. The GCS can be removed.

First of all, the cylinder must be inspected. This will help you decide on repair or replacement. It makes sense to restore the cylinder only if the rubber seals are worn out. The work is carried out in the following sequence:

1. Unscrew the plug at the end of the GCS; if necessary, it will have to be clamped in a vice.
2. Pull out the return spring.
3. Using a screwdriver, remove the rubber cap.
4. Now you need to remove the retaining ring.
5. Using a screwdriver from the side of the unscrewed plug, push out the cylinder piston.
6. Replace all rubber gaskets, rings and seals. To make installation easier, they must be pre-lubricated with brake fluid.

Assembly and installation of the VAZ-2107 clutch cylinder is carried out in the reverse order. After installing the reservoir, it must be filled with brake fluid. True, the clutch will not work yet. Air must be removed from the system.

Product location

The master cylinder on a VAZ 2107 is located under the hood, directly on the wall separating the interior from the hood, near the driver’s feet. Directly above it is the expansion tank, and next to it are the vacuum booster and the brake master cylinder. Usually, simply looking at the product is enough to determine the problem. The presence of a leak indicates that the part is faulty and requires repair or replacement.

Purpose of the device

Cars are equipped with clutch master and slave cylinders, without which the operation of the mechanism is impossible. The VAZ 2107 clutch master cylinder is designed to push out brake fluid. Below is a diagram from which you can visually find out the operating features of the unit.

When you press the clutch pedal, the piston moves in the device in question, thereby pushing out the brake fluid. This liquid enters the working cylinder through a tube, where the reverse process is observed (the liquid pushes out the piston). Brake fluid drives a piston, which is connected by a fork to the clutch disc. As a result, the clutch disc and flywheel are separated, allowing you to change gear. The GCS is also called the main one, since it is with its help that force is supplied from the pedal when it is pressed.

The need to replace the device: when required

Like all parts of any car, the GVC tends to wear out, resulting in the need for repair or replacement. The simplest breakdown of a product is wear of the boot, which can be determined by the characteristic signs of a fluid leak.

To identify a cylinder malfunction, an initial visual inspection is required. It is possible to repair a failed main circulation system on a VAZ 2107; for this you can look for repair kits, but this is not always rational due to the quality of modern spare parts, so it is easier and faster to replace it entirely. The malfunction can also be determined by the characteristic loss of pressure in the system, which is determined by pressing the pedal. Let’s take a closer look at how to change a faulty VAZ 2107 mechanism.

We change it ourselves

Replacing the VAZ 2107 clutch master cylinder begins with the need to pump out the brake fluid from the hydraulic reservoir. This can be done using a syringe or a rubber bulb. Together with this socket or a 10mm wrench, unscrew the bracket securing the expansion tank and move it to the side to gain access to the cylinder.

The next step involves removing the clutch expansion tank hose. To do this, you need to loosen the hose clamp, then disconnect the hose and position it so that it does not interfere with further work. If you want to remove the tank completely, this is done very simply.

Further actions are performed in the following sequence:

1. Using a “10” wrench, you need to unscrew the pipeline securing nut to the device. Once the nut is unscrewed, the tube can be moved to the side.
2. There is a hose nearby near the steel pipeline, which also needs to be disconnected from the main device. This can be done by loosening the fixing clamp.

• The GCS is fixed to the body using two fastening nuts. To unscrew them, you will need to use a wrench with an extension and a “13” socket. After unscrewing the two nuts, you can remove the product and drain the remaining brake fluid from it. If it is not possible to dismantle the unit, you can press the clutch pedal, as a result of which it will move.
• But repairs are usually not rational, so after removing the old one, a new unit is installed in its place. Installation is carried out in the reverse order of removal. After installation, it is necessary to carry out the process of pumping the hydraulic drive, first pouring fuel fluid into the tank. You can find out how the system is pumped from the relevant material on the website.

After the work is completed, you can test the operating features of the new GVC. If necessary, the RCS (working cylinder) should also be replaced, but you can find out more about this in the corresponding material.

Cars of the Volzhsky plant models 01-07 have a hydraulic clutch drive. The main actuator of this mechanism of the VAZ 2107 is replaced in the event of its breakdown or failure. The cylinder is secured to the engine compartment shield on the driver's side with two studs and nuts, and a reservoir with brake fluid is installed in the upper part. A pipeline is laid from it to the working unit.

How to bleed the clutch

Removing air from the system is necessary after any repair of the central circulation system. It is better to carry out work with an assistant. Bleeding the VAZ-2107 clutch cylinder is carried out in the following sequence:

• prepare a small diameter hose and a container with brake fluid;
• fill the tank without adding 1.5 - 2 cm to the top;
• “release” the working cylinder fitting a little and put the hose on it;
• lower its second end into a container with brake fluid;
• press and release the clutch pedal until all the air is released from the system, this can be determined by the absence of bubbles;
• as soon as this happens, you need to fix the pedal pressed and tighten the fitting;
• check clutch operation.

If necessary, the process should be repeated.

Preparing for clutch repair

What you need to prepare in order to repair the clutch yourself:

• A set of keys
• Screwdriver (preferably thin)
• Special pliers-pullers
• WD-40 or similar rust remover
• Knife
• Brake fluid
• Bleeding hose
• Bleeding container
• Syringe

That's probably all that is needed.

Expanding pliers (circlip pliers)