Challenger 75D

The Challenger 75D is an agricultural crawler tractor produced from 1996 to 1997 by Challenger, a part of Caterpillar. It features a Caterpillar 3176C ATAAC 10.3L 6-cylinder turbocharged intercooled diesel engine producing 330 hp gross. The tractor has a 10-speed full power shift transmission and hydrostatic differential steering. It includes hydraulic wet disc brakes and a cab with air-conditioning. The 75D has a fuel capacity of 203 gallons and a hydraulic system capacity of 29 gallons. It uses closed-center pressure-compensated hydraulics with 4 valves and a pump flow of 27 gpm, with an optional 35 gpm. The rear hitch is IV/III type with position and draft control and a rear lift capacity of 12,300 lbs. The rear PTO is independent, 1000 rpm at 2050 engine RPM. Dimensions include a 107-inch wheelbase, 232-inch length, 120-inch width with 30-inch tracks, and an operating weight of 35,720 lbs. Track options include 25, 30, and 35-inch widths with varying ground pressures. Electrical system features a 12-volt negative ground with 2 batteries and 145 amp alternator.