The Allis Chalmers 545B is a wheel loader produced from 1972 to 1974 as part of the 45 Series. It was built in Deerfield, Illinois, USA, with a total production of 2023 units. It features a turbocharged 4.9L 6-cylinder diesel engine producing 102 hp (76.1 kW) with a 4-speed power shift transmission. The loader has four-wheel drive with planetary final drives, articulated power steering, and pneumatic-hydraulic brakes. The operator station is open with an optional cab and heater. Hydraulics include a 55 gpm pump flow and 15 gpm steering flow. The wheelbase is 110 inches (279 cm) and the operating weight is 19000 lbs (8618 kg). Tires are 17.5-25 front and rear. Attachments include a front-end loader with a breakout force of 21430 lbs (9720 kg). Electrical system features a negative ground, alternator charging system with 37 amps standard and 61 amps optional.