John Deere 644K wheel loader powered by a John Deere 6090HDW29 6-cylinder diesel engine paired with a 4F-3R powershift transmission for dependable loading performance and efficient operation. The enclosed cab is equipped with heat, air conditioning, joystick bucket controls, and ride control for operator comfort and precise handling. Features differential lock, front auxiliary hydraulics, a hydraulic quick coupler, and counterweights for versatile material-handling applications. Equipped with a 4.25-cubic-yard JRB self-leveling bucket measuring 120 inches wide with a bolt-on cutting edge, along with 71.5-inch TAG forks, making it well suited for aggregate, stockpile, loading, construction, and general material-handling work.