X-90 (2WD) L4-1591cc 1.6L SOHC MFI (1997)
Clutch Slave Cylinder: Description and Operation
When the operating cylinder is not operating, the push rod is pushed against the release arm only by the piston spring force.
When it is operating, the hydraulic pressure from the clutch master cylinder is applied to the chamber "b". Then the piston pushes the push rod to move
the clutch release arm, causing the clutch disc to operate.