Technical Description
The Hyundai HL740-7 is a robust wheel loader engineered for demanding construction, mining, and material handling applications. It features a turbocharged Cummins QSB5.9-C engine with a displacement of 360.1 cu in, delivering 140 hp (net) at 2,200 rpm and 133 hp (gross) at the same speed, with peak torque of 434 lb-ft at 1,500 rpm. The loader’s hydraulic system employs an open-centered, tandem circuit design with a pump flow capacity of 46.8 gal/min and a relief valve setting of 3,130 psi, ensuring efficient cycle times: 5.5 seconds to raise, 2.8 seconds to lower, and 1.2 seconds to dump. The transmission is a 3-element, single-stage, single-phase unit with four forward and three reverse gears, supporting a maximum forward speed of 23.8 mph and 15.8 mph in reverse. The machine has a 24V electrical system with a 70-amp alternator and a 60.3-gallon fuel tank. Operating weight is 25,350 lbs, with a static tipping weight of 20,240 lbs. The HL740-7 is equipped with a 2.8 cu yd heaped bucket (2.4 cu yd struck), 8.4 ft wide, and offers a dump clearance of 9.4 ft at maximum raise. Key dimensions include a 23.9 ft length with bucket on ground, 10.7 ft cab height, 9.6 ft wheelbase, and 8.4 ft width over tires. The rear axle oscillates 24°, enhancing stability on uneven terrain. Fluid capacities include 4.3 gal engine oil, 43.6 gal hydraulic fluid, 9.3 gal cooling system, and 5.7 gal each for front and rear axle/diff, with 6.4 gal transmission fluid. Tires are 20.5-25 16 PR, L3.
