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How does a clutch pump work?

The clutch pump is the core component of the hydraulic clutch system. It is divided into the master cylinder (master pump) and the slave cylinder (sub-pump). Its working principle is as follows:

Master cylinder function: When the driver steps on the clutch pedal, the push rod pushes the master cylinder piston, compresses the hydraulic oil (usually DOT3/DOT4 brake oil), and generates hydraulic pressure.

Hydraulic transmission: The pressure is transmitted to the slave cylinder (sub-pump) through the metal/rubber oil pipe.

Slave cylinder function: The hydraulic pressure pushes the slave cylinder piston, which in turn pushes the clutch release bearing, compresses or releases the clutch pressure plate, and realizes power transmission or interruption.

Return process: After releasing the pedal, the master cylinder spring resets the piston, the hydraulic oil flows back, and the clutch re-engages.