9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
The pressure acts simultaneously between the servo piston (5) and the differential piston (6) and moves both these components away from each
other. The two lower balls are moved apart while the upper ones are moved towards each other. As a result of this movement, the inlet passage (2)
is closed by the control valve (4) while the return passage (1) to the brake fluid reservoir remains closed.
The control valve closes when the pressure on the differential piston generates a force which is equal to the force applied to the pedal and the
pressure in the master cylinder is proportional to the pedal force.
