"Niva Chevrolet": the clutch. The device and repair of clutch "Niva Chevrolet"

On the off-road vehicle "Chevrolet Niva" the manufacturer installs a mechanical gearbox. With its help, the driver independently adjusts the speed mode of the machine. Another important element of the transmission system of the Niva Chevrolet car is the clutch. Let's look at his device and repair.

Device

On cars "Niva Chevrolet" the clutch is the most standard. Such kits can be seen on most domestic cars. This is a single-disk dry mechanism. It is constantly closed, equipped with a central diaphragm spring and a hydraulic, non-slip drive. It also consists of other parts. Which ones - we will consider below.

Flywheel

It is mounted on the crankshaft of the power unit. The part acts as the driving disc in the car clutch system .

Pressure plate

This part is necessary for pressing the slave and the leading element to each other. Also, this disk can, if necessary, free the slave. This part is connected to the housing by means of springs. When the driver turns off the clutch, the springs perform a return function.

Diaphragm spring

During operation, the diaphragm component acts on this disk, which is designed to provide the required compression force. This is necessary for the transmission of torque. The outer diameter of this spring is pressed against the pressure plate by the edges. At the same time the inner is made in the form of metal petals. They are affected by the release bearing. Together with the disc and diaphragm spring, as well as with the body, a single unit is formed, called the clutch basket. It is fixed firmly to the flywheel.

Slave drive

This element is located between the flywheel and the pressure plate. The mechanism of the hub of this part with the splined joints is fixed to the primary shaft of the gearbox. And this disk can move on its surface. To maximize the smooth engagement of the clutch there are special springs. They soften blows and vibrations. The clutch plate on each side has special friction lining. They are most often made of glass fibers, brass and copper wires. These components under pressure are pressed into a mixture of rubbers and resins. This composition can withstand high temperatures.

Release Bearing

This is an intermediate mechanism between the vehicle drive and the clutch. This element is located on the axis of rotation of the mechanism. When the pedal is depressed, it acts on the diaphragm spring. Directly the bearing is installed in a special clutch, and the clutch fork drives it into motion.

Typical clutch failure on the car "Niva Chevrolet"

The clutch drive is a mechanism of several components. Like any other technical element, it can also fail. On the car "Niva Chevrolet" the clutch works long enough. However, this does not mean that he will never need repair. This mechanism may have certain malfunctions. We note several common breakdowns. All of them are connected with slipping. In this case, the mechanism turns on and off not completely. The clutch will stall if there is a large wear of the friction lining on the driven disc. This happens because of large runs of the car or its operation under extreme conditions. Also, the discs and the friction liner are burned out. In this situation, repairs are impossible. To solve the situation will help replace the slave drive.

The second fault is the presence of oil on the surfaces of the friction pads. This can mean the failure of the seal of the checkpoint. In this case, the problem can be solved by flushing the disc with the replacement of seals where necessary. In addition to these faults, there are others. They lead to the fact that the clutch mechanism leads, or rather, it does not fully turn on. There are several reasons for this. Incomplete switching can be observed at the end beats or partial destruction of the driven disk. In this situation it is necessary to carry out its repair or replacement. This fault also occurs if the rivets on the friction pads are too loose. In this case, the correct solution for troubleshooting is only the replacement of the clutch. "Niva Chevrolet" is distilled at the same time to a pit or a lift.

In addition, the presence of air in the system leads to such a breakdown. This problem is eliminated by pumping. If the disc is skewed or its surface is warped, then a replacement is also necessary. There are other failures that may require replacing individual parts. Experienced motorists define them according to the characteristic symptoms. So, usually when you click on a faulty mechanism, you will hear a characteristic noise. If it occurs only when released, it is also a sign of breakdown.

Diagnosis of the coupling "Chevrolet Niva"

You can conduct an independent diagnosis of the clutch mechanism. To do this, perform several operations:

• On the car include a neutral transmission.
• Then start the motor and warm it up to operating temperatures.
• At the moment when the engine will operate at idle, squeeze the clutch pedal completely. "Niva Chevrolet" starts to work on the rear gear when you switch gearbox.
• The process must pass gently, easily, without noise. If you hear various creaks or grindings, this indicates that the mechanism is defective.
• You can check how the clutch works during the movement. To do this, you need to perform gear changes and listen carefully so that there is no noise or any extraneous sounds.

Already it was noticed about such a malfunction, as slip clutch. When the car speeds up, the crankshaft speed must also increase in proportion to the speed of the vehicle. The tachometer will help to find out the breakdown. If you sharply press on the gas while driving on the car, and the revolutions will start to rise, and then fall slightly, while the car accelerates, then the repair of the clutch is inevitable.

Prorolling of a hydraulic drive

In the list of typical faults, incomplete shutdown was indicated. It was also noted that the reason for this is the air in the hydraulic drive. The problem can be solved by pumping. It is also necessary if a new brake fluid is poured into the drive ("Niva Chevrolet"). In order to perform this operation, you need a set of motorist tools, several hoses, and a container, where the fluid will then be drained. In addition, it is necessary to prepare the brake in sufficient quantity. It will not be superfluous to help a neighbor or friend.

The level of fluid that is in the clutch drive must reach the bottom of the filler opening. If it is not enough for some reason, you should top up the remedy. Then a hose is put on the working cylinder valve. The second end of it is lowered into a container with a prepared liquid. Next, the assistant clicks on the clutch and holds it "in the floor." Five clicks, holdings and releases will be enough. Finally, it is necessary to open the valve for pumping - from there liquid and air must leave. The operation must be repeated several times. We do it until all the air is released from the hydraulic system.

Replacement of cylinders

The master cylinder of the clutch ("Niva Chevrolet" and "Niva 2121" is not an exception here) must be changed in case the system does not want to shut down, or the inclusion does not take place completely. This happens most often due to fluid leaks. First of all, the brake is evacuated from the reservoir. This can be done with a rubber pear. Then disconnect the master cylinder from the hose. Next, unscrew the nut that fastens the pipeline, and then two more that hold the main element. Now it remains only to install a new cylinder. And collect everything in reverse order.

In some cases, when the clutch is not turned off completely due to leakage, it is necessary to carry out other work. You may also need an assistant to complete them. Together you need to replace the clutch slave cylinder. Chevrolet Niva is repaired as follows. First loosen the hose tip on the cylinder. Then, the bolts of the mounting bracket to the crankcase are loosened. The bracket is also removed. After that, you can get the pusher out of the fork with the protective cap. Completely disconnects from the hose clutch cylinder. "Niva Chevrolet" should get rid of the liquid: you drain it. It remains only to perform the installation of a new part and perform the pumping of the hydraulic drive.

Replacement of related parts

Sometimes it is necessary to replace the hose that is included in the machine. To do this, use a key to hold the choke. Meanwhile, disconnect the pipeline. The staple clamp is also dismantled. Then you must drain the drive fluid. Then the hose tip is disconnected from the working cylinder. After installing a new one, you must pump the hydraulic actuator.

Sometimes it is necessary to replace the tank, if it formed sediments. To do this, remove the plug. Unscrew the fasteners and remove it. Then visually check the walls. If there is no deposit, then after thorough washing it can be used further. When the pedal is pressed, the driver can hear a loud noise. This is a signal about the failure of the release bearing. At first, the checkpoint is dismantled. Then detach the bearing from the clutch fork and remove it. Next, install a new, lubricate the splines and put the gearbox in place.

Better grip

"Chevrolet Niva" - a car that is popular in Russia. Now the number of manufacturers that make clutch kits for domestic cars is simply huge. But the owners of the "Chevrolet Niva" distinguish only a few brands, the product of which is really of high quality.

Sachs

These are the products of the German brand ZF. This kit has several advantages over others. It does not require any maintenance. The clutch disc (Chevrolet Niva is no exception) does not have asbestos linings. It perfectly withstand even high loads. The only drawback is a high price. As for the resource, the manufacturer indicates 100,000 km.

Valeo

This is another manufacturer that produces products for Niva Chevrolet cars. Clutch is almost no different from Sachs. The main features are the build quality, the resource is up to 100 000 km. It is characterized by wear resistance even under severe loads. Along with these manufacturers, clutch kits are produced by domestic enterprises. However, their products are not characterized by quality and a great resource.