

Another speed-enhancing design feature is the use of rubber tracks, which gives the 34,000-pound machine the ability to travel up to 18 mph across a job site without damaging pavement. Rubber tracks have much lower rolling resistance than a conventional steel track system, allowing the higher travel speed. This feature also keeps the dozer doing productive work and reduces trailer hauling and the need to lay out mats to cross pavement. The tracks are 24 inches wide and provide 4,989 square inches of track-on-the-ground flotation.
An articulation joint is incorporated for maneuverability when grading around pavement or navigating side slopes. The shorter tracks cover less ground than longer tracks while turning, a design feature used to extend track life. Another advantage to rubber tracks is that they do not have segments-as with steel tracks-that would make the blade bounce. A combination of friction and positive contact, as well as track- tensioning systems, is used to ensure longevity for the rubber tracks. All four tracks are fully, independently suspended and can walk smoothly over uneven or bumpy surfaces.
The 764 HSD also features a Tier 3 John Deere PowerTech Plus 6.8-L engine rated at 200 hp, articulated steering and a hydrostatic drive train. The engine provides 200 net hp at 1,800 rpm and 210 net hp at 1,900 rpm. The entire powertrain system is designed to work together to distribute power to the tracks for maximum push while avoiding spin. When the machine articulates, the inside and outside track speeds automatically adjust for turning control. The hydrostatic transmission also adjusts to deliver the maximum power and speed to the tracks under varying load conditions.
The new dozer also features finish speed control: infinite control from zero to 18 mph is possible and four speed ranges are available. Finish grading can be achieved at speeds around twice those of a comparably sized dozer.
The machine is equipped with an 11-foot, six-way dozer blade. It arrives from the factory pre-wired with "plug-and-play" Integrated Grade Control so that the contractor can integrate a laser/GPS system with the machine. A rear hitch and two hydraulic circuits allow the dozer to pull implements like scrapers, discs, box blades and compactors.