Technical data
- FUNCTION
The transmission uses a positively driven, mechanically operated multiple-disc clutch system mounted
on the output shaft.
The thrust force required for obtaining positive frictional engagement between the clutch discs is provided
by a servo system. This essentially comprises a number of balls which, by the rotary movement of the
external disc carrier, are urged against inclined surfaces provided in pockets between the guide sleeve and
the external disc carrier and in this manner exert axial pressure. The thrust force and, as a result, the
transmittable friction torque are thus proportional to the input torque applied. Due to the cup springs (48)
supporting the clutch disc stack and a limitation of the range of axial travel of the external disc carrier (57),
the thrust force cannot exceed a predetermined value.
The actuating sleeve (60) is held in the middle position by springloaded pins. To initiate the shifting
operation, the actuating sleeve (60) need merely be displaced axially by a shifting fork until the arresting
force has been overcome. Then the actuating sleeve (60) is moved automatically by the spring-loaded pins,
while the external disc carrier, which follows this movement, is rotated by the frictional forces exerted by
the clutch discs, and the shifting operation is completed as described above.