1996-2004 JOHN DEERE 644J POWERLLEL W/COUPLER WHEEL LOADERS

Technical Description

The John Deere 644J Powerllel w/Coupler is a 4-wheel drive wheel loader engineered for versatile material handling applications. Powered by a turbocharged 6-cylinder PowerTech Plus diesel engine (model 6068H, 414 cu in displacement), it delivers 185 net horsepower at 2,200 rpm with impressive 55% torque rise, generating optimal digging and lifting performance. The machine features a variable axial piston hydraulic pump with 76 gal/min capacity and 3,625 psi relief setting, enabling fast cycle times: 1.9-second dump, 5.9-second raise, and 2.8-second lower. The Powerllel linkage configuration provides powerful breakout force of 26,527 lbs and parallel lift characteristics ideal for production work. With a 4-cubic-yard heaped bucket capacity and 9.8-foot width, it efficiently handles diverse loading tasks. Dimensionally, the loader stretches 27.8 feet with bucket on ground, stands 11.2 feet to cab top, and maintains 1.6-foot ground clearance. Operating weight is 48,651 lbs with a static tipping load of 29,833 lbs. The automatic powershift transmission offers 4 forward and 3 reverse gears, achieving maximum speeds of 22 mph forward and 15.5 mph reverse, with an 18-foot turning radius. Ground-level service access, sealed touchpad controls with Quick Shift technology, and a 93-gallon fuel capacity support extended productivity and minimal downtime on demanding jobsites.