Specifications include, but are not limited to: POWER TRAIN: Engine: Diesel, four (4) cycle, water cooled. Minimum 128 flywheel HP at governed RPM. Cooling System: Antifreeze to be permanent type, affording protection to minus 60 degrees Fahrenheit. Extended life coolant (red). To include drain cock(s) at the low point(s). Air Intake System: Single element, dry type, minimum. Air filter restriction indicator. Exhaust System: Muffler(s) must not restrict operator’s vision. ; DRIVE TRAIN: To be hydrostatic, variable speed (0 to 6.0 MPH minimum). Hydrostatic System: To include a maximum 15 micron filter, spin-on type. To prevent excessive loss of oil, ¼-turn ball valve(s) may be required to be installed on the inlet and outlet sides of the filter. Steel drum drive and rear axle rubber tire drive. ; DRUM: Width: 83.9 inches minimum. Diameter: 59 inches minimum. Thickness: 1 inch minimum. Vibration: Frequency: Variable or multiple range between 1,400 and 1,830 VPM (vibrations per minute) minimum. Hydrostatically driven (V-belt system is not acceptable). Scraper: Steel, front only. ; CHASSIS: Operating Weight (Including operator and ROPS): 23,200 pounds minimum. Oscillation: Eight (8) degrees (+/-) minimum frame oscillation. Steering: Turning Radius, inside drum edge, maximum 12.08 feet. Hydraulic power or hydrostatic. Tires: 23.1 x 26, 8PR (minimum ply rating), diamond tread pattern. Brakes: Primary to be hydrostatic. ; OPERATOR’S COMPARTMENT: To include certified ROPS (Roll over Protection System). Sun visor, front. Mirror(s): External and rearview required. Seat: Suspension type, cloth, with seat belt. Seat must rotate to prevent operator fatigue. Steering: Shall include tilt steering wheel. Safety glass windows with 2 hinged windows for ventilation.