Chrysler laser 1990 Technical Information Manual page 236

VISCOUS COUPLING (VCU)
Seal
The construction of the viscous coupling fck the
center differential is as shown above.
The housing is splinecoupled to the center shaft
and the hub is also spline-coupled to the output
flange of the center differential case.
Therefore, the housing turns with the rear wheel
drive shaft and the hub turns with the center
differential.
Center shaft
Within the housing, outer plates (with their outer
edge fixed to the housing inside splines) and inner
plates (with their inner edge fixed to the hub outF--
The outer plates have spacer rings set between
them on the outer edge in order to space them, and
are fixed to the housing.