The driven disk is clamped between the pressure plate and the flywheel, receiving rotation from the latter and transmitting it to the primary shaft of the transmission.
Between the hub of the driven disk and its working part equipped with friction plates, damper springs are installed to soften the process of rotation perception.
The clutch pedal acts on the master cylinder, which in turn supplies hydraulic pressure to the slave cylinder. This causes the clutch release lever to rotate and the release bearing to shift. The release bearing, when shifted, creates pressure on the inner part of the diaphragm spring petals, pushing them toward the flywheel. The outer edges of the spring petals bend, pushing the driven disk away from the flywheel and thereby disengaging the clutch.
On 4.2L models, a servo unit is installed between the clutch pedal and the master cylinder, which reduces the pedal force required to disengage the clutch. The working vacuum to the servo unit is supplied from the intake manifold.
The valve assembly and the servo unit pushrod are mounted on the same axis, which allows the clutch to operate directly from the pushrod in the event of a vacuum loss.
(The material is taken from a web resource: www.nissanbook.ru)
The piston of the actuator cylinder is spring-loaded towards the release lever, which compensates for wear of the friction linings of the driven disk by automatically deepening the piston into the cylinder.