John Deere 644A Wheel Loader
Wheel Loader // John Deere
John Deere 644A Bucket
| Breakout Force: | 41515 lbs (18,831 kg) |
| Bucket Capacity - heaped: | 2.5 cu yds (2 m) |
| Bucket Capacity - struck: | 2.1 cu yds (2 m) |
| Bucket Width: | 8.7 ft (3 m) |
John Deere 644A Dimensions
| Dump Clearance at Max Raise: | 9.3 ft (3 m) |
| Ground Clearance: | 1.5 ft (0 m) |
| Height - Top of Cab: | 10.2 ft (3 m) |
| Hinge Pin - Max Height: | 11.9 ft (4 m) |
| Length with Bucket on Ground: | 20.7 ft (6 m) |
| Reach at Max Lift and Dump: | 3 ft (1 m) |
| Wheelbase: | 8.7 ft (3 m) |
John Deere 644A Engine
| Aspiration: | Turbocharged |
| Displacement: | 404 cu in (0 m) |
| Gross Power: | 141 hp (105 kw) |
| Net Power: | 131 hp (98 kw) |
| Power Measured @: | 2400 rpm |
| Torque Measured @: | 1600 rpm |
John Deere 644A Hydraulic System
| Pump Flow Capacity: | 60 gal/min (227 l/min) |
| Pump Type: | Variable displacement type pump |
| Relief Valve Setting: | 2250 psi |
John Deere 644A Operating Specifications
| Alternator Supplied Amperage: | 55 A |
| Cooling System Fluid Capacity: | 9 gal (34 l) |
| Engine Oil Fluid Capacity: | 4.3 gal (16 l) |
| Front Axle/Diff Fluid Capacity: | 6 gal (23 l) |
| Fuel Capacity: | 50 gal (189 l) |
| Hydraulic System Fluid Capacity: | 17.5 gal (66 l) |
| Operating Voltage: | 12 V V |
| Operating Weight: | 2520 lbs (1,143 kg) |
| Rear Axle Oscillation: | 22 ° |
| Rear Axle/Diff Fluid Capacity: | 6.5 gal (25 l) |
| Static Tipping Weight: | 18604 lbs (8,439 kg) |
| Tire Size: | 16-24 / 20.5- 25 |
| Transmission Fluid Capacity: | 15.5 ft (5 m) |
| Turning Radius: | 9.8 gal (37 l) |
| Max Speed - Forward: | 15.5 ft (5 m) |
John Deere 644A Transmission
| Max Speed - Reverse: | 23 mph (37 kph) |
| Number of Forward Gears: | 9.5 mph (15 kph) |
| Number of Reverse Gears: | 4.0 |
| Transmission Type: | 2.0 |
