wheel drive 4wd position in its 2wd position mode sleeve 62 is disengaged from clutch gear 58 and transfer mechanism 26 is uncoupled from rear output shaft 18 such that transfer case 10 is operating in a two wheel drive mode when mode sleeve 62 is slid axially to its 4wd position synchronizer 60 is energized to synchronize the speed of first sprocket 50 to that of rear output shaft 18 once the synchronization process is complete mode sleeve 62 is permitted to move into coupled engagement with clutch gear 58 for coupling transfer mechanism 26 to rear output shaft 18 and establishing the four wheel drive mode to provide means for coordinating the axial movement of range sleeve 40 between its three distinct range positions and mode sleeve 62 between its two distinct mode positions shift system 12 includes a shift rail 70 mounted to housing 14 a spring loaded range fork assembly 72 supported on shift rail 70 a mode fork assembly 74 supported on shift rail 70 a sector plate 76 operably coupled to range fork assembly 72 and mode fork assembly 74 and a shift actuator 78 for causing controlled rotary movement of sector plate 76 as seen best from fig1 mode fork assembly.