Shop Manual

20-30
The Operation of Clutch
When engaged:
 The oil flows into the clutch cylinder
block from the control valve of gearbox
via the oil hole inside the shaft to push
the piston (10).
 The main and auxiliary friction disc are
engaged when pushing the piston, which
make the clutch case (4) and clutch gear
to form one integer to transmit the power.
When disengaged:
 The oil pressure applied into the piston
(10) is reduced when the control valve of
gearbox cut the oil supplied to the clutch.
 The piston returns to the original position
via the spring (5), which separate the
clutch case (4) from clutch gear (7).
 When the clutch is disengaged, the oil
inside the cylinder block is drained by
the centrifugal force via the discharging
oil opening to prevent the separation of
clutch is not complete.