JOHN DEERE 844K Z-BAR WHEEL LOADER

Technical Description

The John Deere 844K Z-Bar Wheel Loader features a robust turbocharged charge air-cooled 6-cylinder John Deere 6135H Tier III certified engine delivering 380 hp (283 kW) at 1600 rpm with a 44% torque rise, ensuring high performance in demanding applications. The loader has a breakout force of 47,860 lbs (21,709 kg) and a rated bucket capacity of 7.25 cubic yards (5 m³), with bucket width measuring 11.4 ft (3 m) and dump clearance at max raise of 10.9 ft (3 m). Its hydraulic system includes two variable displacement, load-sensing axial piston pumps with a flow capacity of 164.1 gal/min (621 l/min) and a relief valve setting at 3500 psi, allowing for efficient boom cycle times: raise in 5.9 seconds, dump in 1.9 seconds, and lower in 3.5 seconds. Key dimensions include a ground clearance of 1.6 ft (0 m), an overall length with bucket on the ground of 31.7 ft (9 m), a wheelbase of 12.2 ft (4 m), width over tires of 10.5 ft (3 m), and cab height of 12.4 ft (4 m). The machine weighs 70,629 lbs (32,037 kg) operationally and has a fuel capacity of 146.1 gallons (553 l). Transmission is a countershaft powershift type with 4 forward and 3 reverse gears, capable of reaching 25.2 mph (40 kph) forward and 17 mph (27 kph) reverse. The rear axle oscillates 26° for enhanced terrain adaptability, and the turning radius is 20.7 ft (6 m). The 29.5 R 25 tires provide traction suited for heavy construction environments.