2013-2023 JOHN DEERE 644J POWERLLEL W/QC & FORK WHEEL LOADER

Technical Description

The John Deere 644J PowerLLEL with Quick Coupler and Fork is a heavy-duty wheel loader engineered for versatile performance and durability. It features a turbocharged, charge-air cooled 6068H engine delivering 185 hp (138 kW) at 2200 rpm, with a torque rise of 55%, enhancing power during demanding operations. The bucket capacity is 4 cubic yards (3 m³) heaped with a breakout force of 26,527 lbs (12,033 kg), enabling efficient material handling. The loader offers a bucket width of 9.8 ft (3 m) and a dump clearance of 8.8 ft (2 m) at maximum lift, with a hinge pin height of 13.4 ft (4 m), allowing for high dumping and flexible loading. Dimensionally, it measures 29.5 ft (9 m) in length with the bucket on the ground, a wheelbase of 10.5 ft (3 m), and width over tires of 9.1 ft (3 m). The loader has a ground clearance of 1.5 ft (0.45 m) and a cab height of 11.2 ft (3 m). It weighs 41,711 lbs (18,920 kg) and includes 23.5 R25 tires for stability and traction. The hydraulic system utilizes a variable axial piston pump with a flow capacity of 76 gallons per minute (288 l/min), featuring quick cycle times: 1.9 seconds for dumping, 2.8 seconds for lowering, and 5.9 seconds for raising. The automatic powershift transmission offers four forward and three reverse gears with a max forward speed of 22 mph (35 kph) and reverse speed of 15.5 mph (24 kph), optimizing maneuverability with an 18 ft (5 m) turning radius. This machine integrates durable construction with advanced hydraulics and powertrain systems to deliver efficient and productive performance across a wide range of earthmoving and material handling applications.