This coupling is proportional to the angle of the input shaft.
Some big blocks required a larger "input shaft" to withstand the torque.
As that selection is made, some mechanism in the transmission stops the input shaft.
The original version of the transmission had a 27-spline input shaft which was a common failure point.
It is the first dual clutch transmission to feature only one input shaft.
The updated input shaft and bearings carried through to the NV3500.
This sheave was attached to the input shaft of the transmission.
Most other transfer cases used in Jeeps have a centered rear output that lines up with the input shaft.
It is a heavy-duty, gear-driven transfer case with a 23-spline input shaft.
The turbine is connected to the input shaft of the transmission.