Abstract: A motor vehicle power transfer unit includes an input portion, an output portion, a non-parallel gear set and a parallel gear set. The input portion is adapted to connect to an output portion of a transmission assembly and the output portion is adapted to connect to an input portion of a rear wheel drive line. The parallel gear set is coupled to the input portion and transfers power to the non-parallel gear set, which is coupled to the output portion. The non-parallel gear set includes a ring gear having a front face with gear teeth formed therein and a rear face having a cavity formed therein. The ring gear is supported within the power transfer unit by a bearing mounted within the cavity.

Abstract: A planetary differential including a differential case rotatable about an axis and a method of manufacturing thereof. The differential case includes a cover, a housing, an annulus gear, and a ring gear. The differential case defines a differential cavity having a clutch cavity and a planet cavity separated by a retainer plate coupled to the housing. The modular nature of this system allows both open and torque biasing constructions in the same packaging space. The method of manufacturing the differential includes the steps of coupling a retainer plate to the housing between the clutch cavity and the axial opening, placing a planetary gear set in the planetary cavity, and fixing the housing to the annulus gear and ring gear.