Section 1680 (BW44-46 Transfer Case - (Service Information) - 2500 Hd): Operation
WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
The input gear is splined to the transmission output shaft. The input gear drives the mainshaft through the planetary assembly and range sleeve. The front output shaft is operated by a drive chain that connects the shaft to a drive sprocket on the mainshaft. Torque is transmitted through the input shaft to the drive sprocket assembly. The torque is also transferred directly to the rear propeller shaft, to the front output shaft by the drive chain when 4WD is selected. The oil pump circulates gear lube throughout the case to provide internal lubrication and cooling.