Clutch master cylinder: role, repair, price

The clutch master cylinder is part of the hydraulic system that separates the engine from the wheels for gear shifting. It converts the force you put on the clutch pedal into hydraulic pressure that drives the clutch itself. However, it is prone to seal leakage or wear and should be replaced without delay.

⚙️ What is a clutch master cylinder?

Le clutch master cylinder a part that is only found on vehicles with Manual Transmission... It is equipped not only with cars, but also with motorcycles or trucks. The master cylinder drives the clutch, the role of which is to separate the wheels from the engine for gear shifting.

In the hydraulic clutch, the master cylinder acts as the master cylinder. Pumps... It converts mechanical force into hydraulic pressure, which transmits working cylinder, in this case disconnection. This cylinder then allows the engine to be decoupled from the transmission by actuating the clutch release bearing.

🔍 How does the clutch master cylinder work?

The operation of the clutch master cylinder is based on hydraulic circuit... In fact, it is the part of the hydraulic system that is supplied with clutch fluid, which is similar to the hydraulic system. brake fluid.

When you depress the clutch pedal, you apply mechanical force to the clutch master cylinder, pushing this fluid through the system. It then transfers the hydraulic pressure to the slave cylinder. The latter can then disengage the clutch by activating Clutch thrust bearing.

The very purpose of the clutch is, of course, to separate the gearbox from the engine in order to shift gears. Initially, thanks to the master cylinder, the release bearing finally presses against the clutch mechanism.

⚠️ What are the symptoms of a malfunctioning clutch master cylinder?

Since the clutch master cylinder is the heart of the hydraulic system, it is especially prone to leaks. Its failure leads, in particular, to problems with the clutch and gearbox. Here are the symptoms to alert you to a possible malfunction or leak in the clutch master cylinder:

• Clutch Pedal Problem : Abnormal behavior of the clutch pedal, especially with regard to its pressure, is a symptom of a malfunctioning master cylinder. Then you feel that the pedal under your foot is no longer the same. It is soft and can even get stuck on the floor.
• Difficulty passing speeds Another common symptom of a malfunctioning clutch master cylinder, a faulty gear shift could indicate a leak. In this case, the master cylinder cannot generate the pressure required to engage the clutch when you step on the pedal.
• Abnormally low clutch fluid level : If the brake fluid is too low or dirty, the clutch master cylinder gasket may be worn out. It then contaminates the liquid or even leaks. Therefore, a too low brake fluid level may indicate a master cylinder failure, but it could also be a slave cylinder.

To service the clutch master cylinder, it is important to regularly check the brake fluid level and replace it. every xnumx years O. In particular, this will remove air from the clutch master cylinder.

💰 How much does the clutch master cylinder cost?

If the clutch master cylinder is leaking or defective, it must be replaced. We recommend you change also slave cylinder in the same time. Indeed, the latter often fails after the master cylinder.

The cost of replacing the clutch master cylinder depends on your transmission. Some of them are installed inside the transmission and therefore need to be removed. Then a much larger labor force has to be counted, which increases the bill.

Usually the master cylinder is attached to the brake booster. You have to unscrew it from the brake booster housing and disconnect its sensor, then bleed the new master cylinder and reattach it to the brake booster.

Thus, the price of the clutch master cylinder is highly dependent on your vehicle. Think between 40 and 100 € O. But remember that it is also advisable to replace the slave cylinder. In this case, the score may increase. up to € 150 or € 160.

Now you know everything there is to know about the clutch master cylinder! If you suspect failure in this play, do not hesitate to consult a mechanic, as you risk damaging Transmission and a transmission that will cost you dearly to replace. Use our comparator to replace the clutch master cylinder at the best price!