CASE 621D WHEEL LOADER

Technical Description

The Case 621D Wheel Loader is a robust and versatile machine designed for demanding construction and material handling tasks. It features a turbocharged and air-to-air cooled 6-cylinder Family III 668TA/M2 engine, delivering 136 hp (101 kW) net power and 148 hp (110 kW) gross power at 2000 rpm, with a displacement of 409 cu in (6.7 L). The engine produces a maximum torque of 495 lb-ft (671 Nm) at 1200 rpm, supported by a 33% torque rise for efficient performance. The loader has an operating weight of 26,083 lbs (11,831 kg) and a fuel capacity of 50 gal (189 L). Its hydraulic system operates at a relief valve setting of 3600 psi, with a pump flow capacity of 45.2 gal/min (170 L/min), enabling a dump time of 1.5 seconds, a raise time of 5.4 seconds, and a lower time of 5 seconds. The transmission offers 4 forward and 3 reverse gears, with a maximum forward speed of 24 mph (39 km/h) and reverse speed of 15.6 mph (24 km/h), featuring a proportional electronic control module for torque sensing autoshift/manual shift and modulation. The loader’s dimensions include a length of 23.1 ft (7 m), width of 7.9 ft (2 m), and height to the top of the cab of 10.9 ft (3 m), with a wheelbase of 9.6 ft (3 m) and ground clearance of 1.6 ft (0.5 m). The bucket has a heaped capacity of 3 cu yds (2 m³), a struck capacity of 2.6 cu yds (2 m³), and a width of 8.6 ft (2 m), providing a dump clearance at max raise of 9.3 ft (3 m) and a hinge pin max height of 12.6 ft (4 m). The machine is equipped with 20.5x25 L3 tires and a 24V electrical system with a 70A alternator.