In 1990 next generation "50 Series" 753 and 853 models introduced, with an innovative electronic monitoring and diagnostic system called "BOSS" (Bobcat Operation Sensing System), a dual path cooling system, protected axle bearings and a single tilt cylinder.
853 with a high-flow auxiliary hydraulic pump to power attachments like planers and breakers.
A year after launching the 753, engineers took a cue from others in the industry and designed a multiple linkage lift arm structure and stretched the wheelbase a few inches. The resulting vertical lift path 7753 (later the 773) offered more capacity (1700 lb.) in a similar size loader frame. Because the bucket position remained more or less vertical throughout the lift cycle, the 773 had more lift height and reach, making it more adept at truck loading.
WheelsAge.org '2005–н.ч.