Technical Description
The Hyundai HL730-7A is a robust wheel loader designed for efficiency and power in heavy material handling. It features a Cummins QSB4.5 turbocharged 4-cylinder engine delivering 125 hp gross (119 hp net) at 2,100 rpm, with peak torque achieved at 1,400 rpm. The engine displacement is 274.7 cubic inches. The loader has an operating weight of 21,400 lbs (9,707 kg), supporting a 2.4 cubic yard (2 m³) heaped bucket capacity and a breakout force of 21,140 lbs (9,589 kg). It offers a dump clearance of 9 ft (3 m) at maximum lift and a bucket reach of 3.3 ft (1 m).
The transmission is a torque converter type with 4 forward and 3 reverse gears, allowing a maximum forward speed of 22.4 mph (35 kph) and reverse speed of 14.4 mph (23 kph). The hydraulic system uses a helical gear pump with a flow capacity of 37 gallons per minute (140 l/min) and a relief valve setting of 2,990 psi, enabling fast lift, lower, and dump cycles (raise time 5.6 sec, lower 2.8 sec, dump 1 sec). The machine features a 24 V electrical system, a 70 A alternator, and fluid capacities including 53.4 gal fuel, 42.3 gal hydraulic fluid, 8 gal coolant, and 3 gal engine oil.
Dimensions include a wheelbase of 9.1 ft (3 m), width over tires 8.1 ft (2 m), height to cab top 10.5 ft (3 m), and ground clearance of 1.3 ft (0.4 m). Tires are sized 17.5-25, 12PR, L3. Rear axle oscillation is 24°, enhancing maneuverability on rough terrain.
