John Deere 644K High-Lift
Browse All John Deere or Wheel Loader Models
Contents:
Bucket
| Dump Clearance At Max Raise | 10.77 ft in (3280 mm) |
| Bucket Capacity - Heaped | 4.25 yd3 (3.2 m3) |
| Bucket Capacity - Struck | 3.7 yd3 (2.8 m3) |
| Bucket Width | 9.98 ft in (3040 mm) |
| Breakout Force | 30384 lb (135.16 kN) |
Dimensions
| Ground Clearance | 1.34 ft in (408 mm) |
| Length With Bucket On Ground | 28.25 ft in (8610 mm) |
| Width Over Tires | 9.43 ft in (2875 mm) |
| Height To Top Of Cab | 11.09 ft in (3380 mm) |
| Wheelbase | 10.7 ft in (3260 mm) |
| Hinge Pin - Max Height | 14.74 ft in (4490 mm) |
| Reach At Max Lift And Dump | 3.67 ft in (1120 mm) |
Engine
| Number Of Cylinders | 6 |
| Engine Make | 2240 |
| Engine Model | 6068H, Tier III certified |
| Net Power | 232 hp (173.1 kw) |
| Power Measured @ | 1700 rpm |
| Max Torque | 749 lb ft (1016 Nm) |
| Displacement | 414 cu in (6.8 L) |
| Torque Measured @ | 1400 rpm |
| Aspiration | Turbocharged charge air cooled |
| Torque Rise | 55 % |
Operational
| Operating Weight | 40798.8 lb (18506 kg) |
| Fuel Capacity | 93 gal (352 L) |
| Hydraulic System Fluid Capacity | 29.1 gal (110 L) |
| Engine Oil Fluid Capacity | 6.5 gal (24.5 L) |
| Cooling System Fluid Capacity | 7.8 gal (29.5 L) |
| Transmission Fluid Capacity | 6.1 gal (23 L) |
| Front Axle/Diff Fluid Capacity | 5.9 gal (22 L) |
| Rear Axle/Diff Fluid Capacity | 5.9 gal (22 L) |
| Static Tipping Weight | 26958.2 lb (12228 kg) |
| Turning Radius | 18.3 ft in (5570 mm) |
| Operating Voltage | 24 V |
| Alternator Supplied Amperage | 80 amps |
| Rear Axle Oscillation | 26 degrees |
| Tire Size | 23.5 R25 |
Transmission
| Transmission Type | Countershaft, powershift |
| Number Of Forward Gears | 4 |
| Number Of Reverse Gears | 3 |
| Max Speed - Forward | 22.8 mph (36.6 km/h) |
| Max Speed - Reverse | 15.5 mph (24.9 km/h) |
Hydraulic System
| Relief Valve Setting | 3650 psi (25165.9 kPa) |
| Pump Flow Capacity | 81.9 gal/min (310 L/min) |
| Raise Time | 5.5 sec |
| Dump Time | 1.4 sec |
| Lower Time | 3 sec |
| Pump Type | Variable axial piston |
