Outback L.L.Bean Edition AWD F6-3.0L (2002)
The viscous coupling consists of a number of alternately arranged inner and outer plates and air-and-silicone oil mixture filled into a sealed space that
is formed by the center differential case and the rear side gear of the differential gear set. The inner plates have their inner perimeters splined to the
side gear and the outer plates have their outer perimeters splined to the center differential case. The outer plates are held apart by spacer rings. There
are no spacer rings between the inner rings, so the inner rings are movable slightly in axial directions. X-section rings are used to prevent leakage of
silicone oil, which would otherwise occur if the oil is pressurized due to large difference in front and rear axle speeds.
1. TORQUE CHARACTERISTICS
When a speed difference occurs between the center differential case and the rear side gear, a shear force is generated in the silicone oil placed
