Specifications include, but are not limited to:A. General: This specification is designed to provide the Arkansas State Highway and Transportation Department with tandem axle trucks for maintenance operations. The truck’s uses will consist of material hauling, trailer towing, and operation of hydraulically controlled 13’ material spreader, front mount snowplow and mid-mount underbody scraper. B. Cab and Chassis: 1. GVWR: 58,000 pounds, minimum. 2. Cab to Axle: Nominal effective CA of 118” with vertical exhaust stack. 3. Intended Use: Twelve (12) cubic yard dump body. 4. Front Tires And Wheels: Two (2) 315/80R22.5 steel belted tubeless radials - load range “L” minimum. Shall be mounted on 22.5” diameter tubeless type, hub piloted steel disc with 220 mm center hole, 285.75 mm ten (10) hole bolt circle diameter and not less than 9” rim section. All tires must have speed restriction that exceeds 65 MPH. 5. Rear Tires And Wheels: Nine (9) 11R22.5 steel belted tubeless radials - load range “H” minimum. Shall be mounted on 22.5” diameter tubeless type, hub piloted steel disc with 220 mm center hole, 285.75 mm ten (10) hole bolt circle diameter and not less than 8.25” rim section. All tires must have speed restriction that exceeds 65 MPH. 6. Engine: Liquid cooled 4 cycle diesel with a minimum piston displacement of 10.5 liters. Shall have an advertised rating of no less than 350 SAE gross horsepower and a minimum of 1,350 lb. ft. SAE gross torque. Governed speed shall be no less than 2,000 RPM. Shall have full flow oil filter(s), fuel filters, dry type air cleaner, 12 volt electrical equipment with no less than 130 amp alternator and maintenance free batteries as regularly furnished with engine specified. Engine shall be equipped with a block heater rated at no less than 1,000 watts which will operate on 120 volts AC. 7. Front Power Take-Off: Engine to be equipped with provision for front PTO drive. Shall include the necessary crankshaft adapter for attaching a shaft type drive and any other items required for this provision. If the PTO driveshaft passes throught the radiator, charge air cooler, and/or air conditioning condenser it shall be shielded by a steel encasement of sufficient strength to prevent damage to surrounding components in the event of driveshaft failure. The encasement shall be mounted to the chassis frame rails. 8. Cooling System: As recommended and regularly furnished by the manufacturer for use with the engine size and PTO provision specified above with anti-freeze protection to -20o F, or lower. 9. Exhaust System: Vertical exhaust stack with curved outlet. Exhaust stack to be equipped with a heat shield. If the DPF is part of the exhaust stack, the clearance to the dump body must be pre approved. 10. Engine Shutdown: Engine safety shutdown system with manual or automatic override to include the following features: low oil pressure - warning bell/buzzer plus shutdown, high coolant temperature - warning bell/buzzer plus shutdown and low coolant level - warning bell/buzzer plus light or shutdown
