The difference between the clutch master cylinder and the clutch slave cylinder

The clutch master cylinder is a part connected to the clutch pedal and the clutch booster via oil pipes on a car. It collects pedal travel information and achieves clutch separation with the aid of the booster.

The clutch slave cylinder plays the following role in the clutch system: When the driver steps on the clutch pedal, the push rod drives the clutch master cylinder piston to increase the oil pressure. As a result, the oil will enter the slave cylinder via the hose, and force the slave cylinder draw bar and consequently the release yoke to move, thus pushing forward the release bearing. After the driver releases the clutch pedal, the hydraulic force will be removed. The release yoke will gradually resume its original position under the effect of the return spring, and the clutch will be engaged again.

The differences between a broken clutch master cylinder and a broken clutch slave cylinder:

  1. In the case of a broken clutch master cylinder, you will not feel the usual resistance when pressing the clutch. Don’t try to engage the gear, otherwise more severe wear will occur.
  2. In the case of a broken clutch slave cylinder, you will feel that the clutch pedal is harder or softer than usual, or the clutch travel is too short to achieve disengagement (with a normal clutch clearance).
The difference between the clutch master cylinder and the clutch slave cylinder

Name: clutch master cylinder

Ref No. : 6Q0721388D

Applicable models:

Skoda: FAB00-10/FABI09-14/OCT97-11/RO06-10

VW: FO05-12/FOA04-10/GL09-11/GOLF03-06/PO02-10/SA10-13/SU11-14

Seat: CO03-10/LE00-06/TO99-04/IB02-10

Audi: ATT03-06