Clutch slave cylinder rod VAZ 2107

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.

Basic faults

It should be noted right away that the driven disk and release bearing are consumables, the long service of which should not be counted on. The integrity of the flywheel is much more important; its price is much higher and replacement is more difficult.

The main clutch malfunctions on a VAZ:

Difficulty changing gears;
Clutch slips;
Jerks during operation;
Vibration during operation;
Creaking and other extraneous sounds during operation;
The clutch doesn't work.

Difficult gear shifting means that the clutch does not disengage completely, that is, the driven disc continues to turn when the pedal is pressed. There may be several reasons for this situation:

There is a problem with the driven disk: it began to jam on the splines of the input shaft, or the fixing rivets began to come out of their seats and cling to the flywheel and pressure plate, or the damping springs failed;
Problem with the release bearing: it is too far from the clutch basket, as a result it does not press it with enough force;
Hydraulic problem: low fluid or air lock.

Once the cause has been found, you can solve the problem: replace the driven disk, troubleshoot the input shaft, install the release bearing at the required distance from the clutch basket, add hydraulic fluid and bleed the system.

Clutch slipping is the asynchronous movement of the flywheel and driven disk when the clutch is fully engaged (when the pedal is not pressed). Causes:

Oil has got onto the working surface of the driven disk;
The problem is with the release bearing: it fits against the clutch basket and presses on the spring;
The clutch drive requires adjustment;
The bypass channel in the master cylinder is clogged;
The clutch pedal does not move back.

Depending on the problem, the solution will be appropriate: checking and replacing oil seals from which oil may leak, adjusting the clutch, repairing and cleaning the master cylinder.

Jerking and vibration when the clutch operates is a rather unpleasant sign. Possible causes of jerking when moving:

The disc is jammed on the gearbox shaft splines. In this case, it cannot move freely along them, which means there will be no “soft docking” with the flywheel;
Problem with the basket and drive disk. With prolonged use, the springs wear out and the drive disk becomes deformed;
The driven disk is worn;
The drive requires adjustment.

With such a problem, diagnostics is needed. In the best case, everything can be done by replacing the driven disk; in the worst case, the entire clutch will have to be changed.

If, when engaging or disengaging the clutch, you hear grinding, rattling, knocking and other sounds that should not be there, this may be a manifestation of the following problems:

The bearings are jammed - pressure or drive shaft. This may be due to wear and tear over time or lack of lubrication. In this case, the sound appears when the clutch is engaged;
There is a problem with the driven disk - the springs or splines connecting to the gearbox shaft are worn out. Knocking and rattling noises appear when you press the pedal;
The clutch fork return spring does not work.

After diagnosis, broken parts must be replaced with new ones. If the problem is in the spline connection of the driven disk, it is necessary to check the condition of the gearbox shaft.

And finally, if you release the pedal and the clutch does not engage, the reason must be sought in the hydraulics:

Airlock;
Insufficient hydraulic fluid;
The clutch cylinder seals are worn out.

The easiest way is to add fluid to the reservoir and bleed the clutch system. If the problem is not solved, it is necessary to dismantle the master and slave cylinders and replace the repair kits.

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

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

Rice. 4–3. Slave cylinder and clutch release fork: 1 - clutch release bearing; 2 — ball joint; 3 — clutch release fork; 4 - pusher; 5 — adjusting nut; 6 - lock nut; 7 — tension spring; 8 — housing plug; 9 — fitting for bleeding; 10 — cylinder body; 11 - sealing ring; 12 — protective cap; 13 - piston; 14 - seal; 15 - plate; 16 - spring; 17 — support washer; 18 — retaining ring

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.

Raise the handbrake all the way.
Depress the clutch and start the engine.
Try to change gears, but no extraneous sounds or blockages should appear.
Engage a random gear and smoothly release the pedal.
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:

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.
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.
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.
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.
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.
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.

Monitoring the brake fluid

One of the main signs of failure of the clutch slave cylinder in VAZ 2106, 2101, 2107 cars is partial or complete failure of the pedal inside the car when pressed. This indicates a lack of tightness in the system - gradually the amount of brake fluid decreases, and the harder and more often you press the pedal, the more fluid will leave at a time.

This will cause the clutch to stop working and changing gears will be difficult or impossible. If you do not monitor the level of brake fluid in the reservoir and do not eliminate leaks in a timely manner, then consequences may arise - the clutch basket and release bearing will fail, not to mention the creation of emergency situations.

To eliminate the cause of the breakdown or completely replace the working cylinder, depending on the nature of the breakdown, you will need a new working cylinder, brake fluid and a standard set of tools. It is best to replace the working cylinder in a VAZ 2106, 2101, 2107 car from an inspection hole or on a lift. Before starting work, it is necessary to drain the brake fluid that is in the clutch system. Having all the necessary tools at hand, the procedure for removing the cylinder is very easy.

The first step is to pull out the pusher clamp, then remove the tension spring. Next, slowly unscrew the nut on the hose with the liquid, after placing a container to collect it. Then proceed to unscrew the cylinder mounting bolts, after first pulling out the pusher with the clutch fork. Move the fork with the pusher so that it does not interfere with you. Between the working cylinder and the rubber hose there is a rubber gasket with a sealing washer. It is very important not to lose it, because it is not included in the repair kit.

Replace the clutch slave cylinder and proceed with reassembly in reverse order. If necessary, you can adjust the depth of pedal pressing on the cylinder fitting. After completing all the work, fill the brake fluid into the clutch reservoir. Filling will help to completely flush the entire hydraulic clutch system of a VAZ car. Bleeding is performed to clear your system of air that is in the brake fluid.

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.

Work on top of the car

So, a start has been made, the goal is to remove the gearbox to replace the clutch. On VAZ 2106 and similar cars this is done quite quickly, it is only important to follow a certain sequence:

Inside the car, remove the gear shift knob. It is attached using plastic latches. Sometimes difficulties arise with dismantling, and it gets to the point where the latches break off. The price of a new set of fastenings is no more than one hundred rubles, and you can purchase it even after repairs have been carried out. Therefore, do not be afraid if you suddenly break the plastic antennae.
Go to the engine compartment, unscrew the four nuts that secure the exhaust pipe to the manifold. The fact is that the exhaust pipe will interfere with the removal of the box, but it is enough to move it a little to the side.
Disconnect the battery and remove it from the car.
Unscrew the two top bolts of the starter, disconnect the power wires for the windings and the solenoid relay from it.
Disconnect the ground wire that goes to the gearbox.

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:

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.
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:

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.
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.
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:

Using a 22mm socket wrench, unscrew the plug and remove the boot along with the locking ring.
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.
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:

The tank and cylinder linkage assembly must be secured in the standard mounting points in the engine compartment using keys.
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.
After this, connect the tank to the general hydraulic drive system and fill the liquid in accordance with the level.

Replacing the clutch disc

The driven disc is a consumable that must be worn out for the rest of the clutch to work properly. Problems with the driven disk are wear of the friction linings, damper springs, and splined connection to the gearbox shaft. When inspecting, you need to pay attention to the condition of the rivets (they should not protrude above the surface of the friction circle), the presence of cracks, rust in the center, and traces of oil. And an important sign of a problem will be a burning smell - the friction material is burning due to clutch slippage.

Experts recommend choosing the clutch basket and driven disc from the same manufacturer. It often happens that the friction material and, for example, the power of the basket springs are specially selected according to parameters to give the optimal effect. This is where many fans of a sporty driving style make a mistake when they install a three-leaf driven disc without replacing the remaining clutch elements.

Simultaneously with replacing the clutch, it is necessary to check the crankshaft oil seal. Servicemen often recommend changing it at the same time as the clutch disc, “so as not to have to get up twice.”

When installing the clutch on the flywheel, the driven disk is centered using a special mandrel, which is inserted into the flywheel bearing. After this, the basket is installed on the guide pins so that the mounting holes on it and the flywheel match. As with dismantling, the bolts are tightened one at a time, each one needing to be tightened 1-2 turns at a time. After this, the mandrel for centering the driven disk can be removed.

Lubricate the gearbox shaft before installation, then install the gearbox. Next, the sequence of actions is the reverse of removal.

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:

Using a cable.
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.

General information

In order for the replacement of the VAZ 2107 clutch slave cylinder to be justified, it is good to know its purpose and the first signs of a malfunction. The torque transmission system on classic VAZ models is driven by a hydraulic drive, the main task of which is to transmit force when pressing the clutch control pedal.

In turn, the hydraulic drive consists of two cylinders: the main and the working. When the pedal is applied, pressure is created in the main center, as a result of which the brake fluid is pumped through the valve into the working cylinder (WC). The latter activates the rod, which squeezes the fork, thereby selecting gears.

Traditionally, the control center is located on the gearbox housing and secured with two bolts, so it can only be reached from under the bottom of the car. The operation of both cylinders depends on the presence of brake fluid, so you need to monitor its level, especially since this is not difficult to do - the container is located in the engine compartment.

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.

Replacing the clutch basket

Replacing the basket is done less frequently than replacing the driven disk. The basket needs to be changed if the drive disk overheats (then colored spots appear on it), breakage or wear of the diaphragm blades and springs. To access the clutch, you need to remove the gearbox.

Procedure:

In the engine compartment, remove the “-” terminal from the battery and unscrew the starter bolts;

Removing the terminals from the battery
In the cabin, remove the gearshift knob;

Removing the gear knob
Remove the exhaust pipe from the hole;

Removing the exhaust pipe from the exhaust manifold
Unscrew the propeller shaft from the main gear, mark the connection points on the flanges;

Unscrew the driveshaft
Unscrew the cross member of the rear gearbox support;

Unscrew the gearbox cross member
Unscrew the gearbox mounting bolts (4 pieces);
Disconnect the wire from the reverse gear sensor;
Unscrew the speedometer cable;

Unscrew the speedometer cable
Unscrew the clutch slave cylinder;
Pull the gearbox out until the shaft is completely out of the clutch and remove it.

Removing the gearbox

When dismantling the clutch itself, you need to unscrew the basket bolts from the flywheel. To distribute the load evenly, the bolts are unscrewed 1-2 turns in turn. After removal, the basket must be inspected for wear of the disk, integrity of the springs, and diaphragm.

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”.

Work under the car

This is perhaps the most difficult part of the entire repair, since there are many more steps to be taken here. So make yourself comfortable and proceed to the following operations:

Unscrew the last (lower) nut securing the starter and remove it. This nut is the nastiest, since it is difficult to get to it using simple wrenches; you will need to use a socket, a ratchet and a cardan. True, it was possible to work with an ordinary open-end wrench installed in the end.
Unscrew the suspension bearing mount.
Disconnect the cardan and rear axle flange. Hold the bolt head from turning with a 12mm open end wrench.
Apply sharp blows to the driveshaft to dislodge it from the rubber coupling on the transmission shaft. Move the cardan to the side.
Unscrew the mounting of the pillow, install a support under the gearbox.
Remove the slave cylinder from the clutch fork. Be careful not to lose the bar underneath and the spring.
Remove the speedometer cable.
That's all, now all that remains is to unscrew the four bolts that secure the box to the engine block.

Remove the gearbox carefully, try to move it as far as possible from the engine block. The fact is that you can damage the VAZ 2106 clutch drive disc. And this is quite easy to do.

If we take nines and newer VAZs as an example, then the clutch drive discs on them are more reliable and durable. It is advisable to set the gearshift lever to the position corresponding to the third speed.

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.

We perform pumping correctly

Bleeding the clutch must be done immediately after replacing the working cylinder, as well as when the level of brake fluid in the reservoir is low. Work is carried out on bleeding in VAZ 2106, 2101, 2107 cars through a fitting located on the working cylinder.

First, fill the brake fluid reservoir full. Find a partner for this job who will press the clutch pedal inside the car. Take the hose and put it on the fitting of the slave cylinder, then tell your partner to depress the clutch pedal several times. After this, let him press the pedal all the way and do not let go, at this time you should slightly loosen the nut on the fitting to release some liquid and air.

This procedure must be repeated until there are no air bubbles in the liquid flowing out of the hose. After that, add it to the middle mark in the tank and check from time to time to see if it goes away.

Expert opinion

Ruslan Konstantinov

Automotive expert. Graduated from Izhevsk State Technical University named after M.T. Kalashnikov, specializing in “Operation of transport and technological machines and complexes.” More than 10 years of professional car repair experience.

After repairing the clutch drive or replacing individual elements, it is recommended not only to bleed the system, but also to adjust it. To work, you will need a caliper, a set of wrenches and pliers. Depending on whether the engine is fuel-injected or not, the procedure may differ. In the first case, you will need to adjust the free play of the clutch pedal, in the second, the stroke of the piston rod in the working cylinder. How to set up is described in detail in the relevant articles with step-by-step instructions.

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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:

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.
Using a 10mm open-end wrench, unscrew the metal tube from the main center and move it to the side.
Using a 13mm socket, unscrew the two nuts securing the cylinder to the engine compartment bulkhead.
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:

Unscrew the plug at the end of the GCS; if necessary, it will have to be clamped in a vice.
Pull out the return spring.
Using a screwdriver, remove the rubber cap.
Now you need to remove the retaining ring.
Using a screwdriver from the side of the unscrewed plug, push out the cylinder piston.
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:

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.
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.

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)