Abstract: A pin retention and assembly system that is used with vehicles, such as, off-road vehicles is provided. The pin retention and assembly system has modular locking pins engaging a collar positionable about a bearing journal of a differential housing. Channels are formed in the bearing journal for receiving the locking pins. The channels aid in maximizing the size of the bearing journal. The locking pins engage the collar to lock the differential housing. In an embodiment, the locking pins and locking apertures in the differential housing are orientated asymmetrically causing the number of locking pins to be independent to the apertures in the side gear.

Abstract: A housing for a vehicle component and a method for making the same. The housing comprises a housing body having an interior surface and an exterior surface. The outer wall of the housing is formed with a plurality of longitudinal splines and a plurality of longitudinal troughs located between confronting splines. A spiral groove is cut into the interior surface of the outer wall so as to remove material sufficient to engage at least one of the troughs thereby forming a plurality of apertures having a closed periphery and extending longitudinally along the outer wall.

Abstract: Clutches require fluid passages to be contained therein to lubricate the moving parts therein. Current clutch designs requiring fluid passages to be formed through the spline provides numerous difficulties. The present clutch design and method of assembling the clutch comprises a clutch housing having a predetermined shape, a piston positioned within the clutch housing, a sleeve having a predetermined shape substantially conforming to the predetermined shape of the clutch housing, the sleeve being positioned within the clutch housing forming a fluid passageway between the clutch housing and the sleeve and forming a piston reactive cavity between the clutch housing, the piston, and the sleeve.

Abstract: A housing for a vehicle component and a method for making the same. The housing comprises a housing body having an interior surface and an exterior surface. The outer wall of the housing is formed with a plurality of longitudinal splines and a plurality of longitudinal troughs located between confronting splines. A spiral groove is cut into the interior surface of the outer wall so as to remove material sufficient to engage at least one of the troughs thereby forming a plurality of apertures having a closed periphery and extending longitudinally along the outer wall.