John Deere 644K
Browse All John Deere or Wheel Loader Models
Contents:
Bucket
| Breakout - Bucket | 15378 (33903) kgf (lbf) |
| Bucket Capacity - Smallest | 4.06 yd3 (3.1 m3) |
| Largest Bucket Capacity | 4.19 yd3 (3.2 m3) |
Dimensions
| Ground Clearance | 18.15 in (461 mm) |
| Length With Bucket On Ground | 27.24 ft in (8300 mm) |
| Width Over Tires | 9.44 ft in (2875 mm) |
| Wheelbase | 10.7 ft in (3260 mm) |
| Hinge Pin - Max Height | 13.52 ft in (4120 mm) |
| Reach At Max Lift And Dump | 5.29 ft in (1610 mm) |
| Turning Circle | 43.57 ft in (13280 mm) |
| Height Over Cab | 11.26 ft in (3430 mm) |
Engine
| Pump | Piston |
| Engine Output-Net | 232 hp (173 kw) |
| Transmission Type | Powershift |
| Engine Make | John Deere |
| Engine Model | PowerTech PSS 6090 |
| Torque | 783.3 lb ft (1062 Nm) |
| Rated Speed | 1700 rpm |
| Displacement | 549.3 cu in (9 L) |
| Torque Rise | 56 % |
| System Voltage | 24 V |
| Emission Level | Tier 4 |
| Alternator | 130 amps |
Driveline
| Ride Control System | Optional |
| Service Brake Type | Wet Disc |
| Parking Brake Type | Wet Multi Disc - Transmission |
| Differential Lock | Front- Locking, Rear- Open |
| Service Brake Actuation | Hydraulic |
| Tire Size - Standard | 23.5 R25 |
| Service Brake - Location | Axle Inboard |
Capacities
| Hydraulic Tank | 27.8 gal (105.2 L) |
| Heaped Capacity | 4.2 yd3 (3.2 m3) |
| Transmission | 6.1 gal (23 L) |
Operational
| Operating Weight | 41186.8 lb (18682 kg) |
| Fuel Capacity | 104.9 gal (397 L) |
| Front Axle/Diff Fluid Capacity | 5.9 gal (22 L) |
| Rear Axle/Diff Fluid Capacity | 5.9 gal (22 L) |
Transmission
| Pump Flow | 78.5 gal/min (297 L/min) |
| System Pressure | 251.7 psi (1735.2 kPa) |
