Cars with manual transmissions are equipped with a clutch unit. The quality of his work depends on the smoothness of manual switching between the steps of the box. In the event of a breakdown of this node or its individual elements, such as the working cylinder, the driver will not be able to continue driving. It will be impossible to squeeze the clutch and shift.

It is unlikely that it will be possible to carry out repair work outside your own garage or service station. Therefore, you should not bring the clutch to a complete inoperability.

Content

• 1 Clutch operation principle
• 2 Visible malfunction of the working cylinder
• 3 Repair
• 4 Mandatory procedures after replacing the working cylinder
• 5 Conclusion

Clutch operation principle

When the driver presses the clutch pedal, in this case he transmits the force to the rod of the clutch master cylinder. Inside it is a hydraulic fluid, which due to its incompressibility sends pressure to the working cylinder rod. This element of the system with the help of the fork spreads the friction discs.

At this point, the driver can safely switch to any level of gearbox. Returning the pedal to its highest position will reverse the process. In this case, the friction discs return to the closed position.

Often problems in the clutch occur due to the failure of some of the cylinders. If the diagnosis is confirmed, then the clutch slave cylinder or the main one is replaced.

Visible malfunction of the working cylinder

This element of the clutch system consists of several simple components. In a metal or plastic housing located along the axis of the rod. To return it to its original position there is a spring. The end of the rod interacts with the pusher that moves the fork.

In addition to the main elements of this hydraulic unit are cuffs and o-rings. Significant production or mechanical deformation of any part can damage the entire system. Then you need a clutch slave cylinder repair kit.

The obvious signs of problems include the following states:

• The level in the tank with brake fluid dramatically reduced. A likely problem is usually hydraulic depressurization and leakage. This happens in the event that the cuff is worn out, or the hose with a liquid that is suitable for the cylinder has end-to-end damage. During parking, stains or smudges may appear under the cylinder.
• Soft clutch pedal, there is a failure when you press the pedal or several failures. You can try to bleed the clutch, if this led to a temporary restoration or everything remains the same, then it is worth replacing the working cylinder. There may be cracks or worn cuffs in its body.
• The upper point of the pedal goes down for a short time. Often there is a problem switching between steps. The liquid does not go anywhere. This is how spring breakage is diagnosed. It will be enough to remove the knot and install the repair kit.

Repair Kit Work Cylinder

The repair kit includes parts subject to the most intense wear: cuffs, spring, stem, etc.

See also: How to check the oil in the automatic transmission

Repair

Repair of the clutch slave cylinder begins with its dismantling. The classic location for it is the space around the clutch housing. The main features and sometimes even the overall dimensions of this cylinder are similar for different car brands. This makes its disassembly and replacement an almost universal operation.

Disassembled parts need to be disassembled. The most convenient way to do this is with the help of a bench vise. First of all, remove the working cap and pusher. Then we take out a rod and a lock ring. Remove the spring and rubber seals. We clean the rod and, if possible, blow through the technological openings located in the housing.

We check the cylinder's cylinder for any damage, also inspect the rod so that it does not bend and there are no chips on it. The spring is also changed, if its rigidity has weakened. If this is not done, the clutch pedal will normally be below the rest of the pedals.

Step 1. Unscrew the mounting nut.

Step 2. Remove the spring

Step 3. Remove the locking element

Step 4. Unscrew the bolts from the body

Step 5. Remove the bracket

Step 6. We get the cylinder

Step 7. Disconnect the cylinder from the hydraulic system.

If not all parts are subject to replacement, then we wash the operable elements in oil or diesel fuel.

You need to know that the rubber components of the clutch slave cylinder should not be washed with gasoline!

Such flushing often provokes swelling of the sealing elements, which lowers the tightness of the system and leads to leakage of fluid. The assembly is carried out in reverse order.

Mandatory procedures after replacing the working cylinder

The assembled hydraulic clutch system is not ready for full operation. After this repair, it is required to pump and adjust the pedal height. The process of pumping in most car brands is similar to that which is carried out after the repair of the master cylinder.

See also: How to check the automatic box when buying a car

In some cars, for example, "Fiat" such an operation is carried out in reverse order. Therefore it is necessary to clarify the algorithm for pumping from the official representatives of the automaker.

Conclusion

Repair or replace the clutch slave cylinder is possible even in garage conditions. This will require a minimum set of tools and a small amount of time. Tightening up with such a repair is not worth it, as the safe driving of a car depends on the performance of this unit.