John Deere 644G Wheel Loader

Dimensions

Length W/ Bucket On Ground 25.69 ft in (7830 mm)
Width Over Tires 9 ft in (2743 mm)
Height To Top Of Cab 11.23 ft in (3420 mm)
Wheelbase 10.5 ft in (3200 m)
Ground Clearance 1.59 ft in (483 mm)
Hinge Pin Max Height 13.13 ft in (4000 mm)
Dump Clearance At Max Lift 9.42 ft in (2871 mm)
Max Lift Height 12.53 ft in (3818 mm)
Fork Tine Length 4.51 ft in (1372 mm)
Hook Height At Max Lift – Standard 18.81 ft in (5732 mm)
Hook Height At Max Lift – Extended 22.92 ft in (6985 mm)
Hook Reach At Max Lift – Standard 6.87 ft in (2092 mm)
Hook Reach At Max Lift – Extended 11.58 ft in (3527 mm)
Length With Out Forks On Ground 27.19 ft in (8287 mm)
Reach At Max Height And Dump 3.74 ft in (1138 mm)

Engine Details

Number Of Cylinders 6
Engine Make John Deere
Engine Model 6076A
Gross Power 178 hp (133 kw)
Net Power 170 hp (127 kw)
Power Measured @ 2200 rpm
Max Torque 598 lb ft (811 Nm)
Torque Measured @ 1300 rpm
Displacement 466 cu in (7.7 L)
Aspiration Turbocharged w/ Aftercooler

Operational Specs

Operating Weight 35236 lb (15980 kg)
Fuel Tank Capacity 75 gal (284 L)
Cooling System Fluid Capacity 7.6 gal (28.5 L)
Engine Oil Capacity 6.4 gal (24 L)
Transmission Fluid Capacity 3.7 gal (14 L)
Front Diff Fluid Capacity 7.6 gal (28.4 L)
Rear Diff Fluid Capacity 7.6 gal (28.4 L)
Hydraulic System Fluid Capacity 30.4 gal (115 L)
Turning Radius 18 ft in (5460 mm)
Operating Voltage 12 V
Alternator Supplied Amperage 95 amps
Rear Axle Oscillation 26 degrees
Static Tipping Load – Bucket 26228 lb (11896.9 kg)
Static Tipping Load – Forks 18251 lb (8278.6 kg)
Static Tipping Load – Material Handler 13290 lb (6028.3 kg)
Tire Size 20.5-25

Transmission

Transmission Type Power Shift
Number Of Forward Gears 4
Number Of Reverse Gears 3
Max Speed Forward 21.5 mph (34.6 km/h)
Max Speed Reverse 13.7 mph (22 km/h)

Hydraulic System

Pump Type Gear
Relief Valve Setting 3000 psi (20684.3 kPa)
Pump Flow Capacity 69.5 gal/min (263.1 L/min)
Raise Time 6.2 sec
Dump Time 1.8 sec
Lower Time 3.5 sec

Bucket

Breakout Force 35317 lb (157.1 kN)
Bucket Capacity – Heaped 3.8 yd3 (2.9 m3)
Bucket Capacity – Struck 3.2 yd3 (2.5 m3)
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