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The clutch master cylinder is located behind the clutch pedal. Via the release bearing, the master cylinder helps boost the clutch, which is released when the clutch pedal is depressed. When this happens, you can change gears.
The clutch master cylinder is constantly activated while driving, so it becomes worn over time.
Below, we have provided some examples of how to detect a worn or defective clutch master cylinder.

• On visual inspection, there are signs of liquid leakage.
• The brake fluid level is found to be too low. If this turns out to be due to a leak, it may be necessary to replace the clutch piston and bowls.
• The clutch pedal feels strangely soft to depress. This is probably because air has entered the system.
• If you can hear noises when changing gears, or if vibrations occur in the gear lever, there is a fault somewhere in the clutch system.
• While driving, the clutch does not disengage properly and it is difficult to change gears.