Fluid Flow Operation

When the clutch pedal is pressed, the fluid pressure from the master cylinder moves the one-way valve in the direction shown in the illustration. The fluid flows through two passages: the orifice-part and the filter-part. It then flows out to the piston cylinder to release the pressure plate and clutch disc joint.

Fig 1: Identifying Fluid Flow Operation

Courtesy of AMERICAN HONDA MOTOR CO., INC.

When the clutch pedal is released, the fluid pressure from the piston cylinder moves the one-way valve in the direction shown in the illustration. The one-way valve blocks the filter-part passage and delays the clutch release speed by returning the fluid to the master cylinder through only the orifice-part passage.

Fig 2: Identifying Fluid Flow Operation

Courtesy of AMERICAN HONDA MOTOR CO., INC.