The John Deere 444J Z-Bar wheel loader is a robust machine featuring a turbocharged, charge air-cooled 4-cylinder 4045H engine delivering 119 hp at 2200 rpm with a torque rise of 32% measured at 1400 rpm. It offers a bucket breakout force of 18,104 lbs and bucket capacities of 2.5 cubic yards (heaped) and 2.1 cubic yards (struck), with a bucket width of 8.4 ft. The loader has a maximum hinge pin height of 12 ft and a dump clearance of 8.4 ft at maximum raise, facilitating efficient material handling. It measures 23.5 ft in length with an 8.4 ft width and 10.5 ft to the top of the cab, riding on a 9 ft wheelbase. Its ground clearance is 1.3 ft and it has a turning radius of 15.5 ft. The hydraulic system features a variable axial piston pump with a flow capacity of 37 gallons per minute and a relief valve setting of 3600 psi, enabling fast cycle times: dump in 1.1 seconds, lower in 1.9 seconds, and raise in 5.5 seconds. Operating weight totals 24,561 lbs. The transmission is a 4-forward and 3-reverse automatic powershift, with max speeds of 23.4 mph forward and 15.7 mph reverse. Fuel capacity is 65 gallons, with hydraulic fluid at 26 gallons and engine oil at 4.7 gallons. Tires are 17.5 R25, and the system operates at 24 volts with an 80-amp alternator. Rear axle oscillation is 24°, providing stability on rough terrain.