1990 Caterpillar Model D6H Series II Crawler Dozer, SN: 6CF01208, Cat Turbo Diesel Engine, Power Shift Transmission, 18,860 Actual Hours, Cab w/ AC & Heat, Differential Steer, True Sweeps, 11 ft. Semi U-Blade, 3-Shank Hydraulic Rear Ripper, Very Good Cutting Edges & Blade Facing, 24 in. Pads, Good Undercarriage & Tracks.