John Deere 644G Wheel Loader

Bucket

Breakout Force 35,317 lbs (16,020 kg)
Bucket Capacity – heaped 4 cu yd (3 cu m)
Bucket Capacity – struck 3 cu yd (2 cu m)

Dimensions

Dump Clearance at Max Lift 10 ft (3 m)
Fork Tine Length 5 ft (1 m)
Ground Clearance 2 ft (0 m)
Height – Top of Cab 11 ft (3 m)
Hinge Pin Max Height 13 ft (4 m)
Length w/ Bucket on Ground 26 ft (8 m)
Length with out Forks on Ground 27 ft (8 m)
Max Lift Height 13 ft (4 m)
Reach at Max Height and Dump 4 ft (1 m)
Wheelbase 11 ft (3 m)
Width Over Tires 9 ft (3 m)

Engine

Aspiration Turbocharged w/ Aftercooler
Displacement 466 cu in (7,636 cu cm)
Engine Model 6076A
Gross Power 178 hp (133 kw)
Max Torque 598 lbs ft (811 nm)
Net Power 170 hp (127 kw)
Number of Cylinders 6
Power Measured @ 2200 rpm
Torque Measured @ 1300 rpm

Hydraulic System

Dump Time 1.8 seconds
Lower Time 3.5 seconds
Pump Flow Capacity 70 gpm (263 lpm)
Pump Type Gear
Raise Time 6.2 seconds
Relief Valve Setting 3000 psi

Operating Specifications

Alternator Supplied Amperage 95 amps
Cooling System Fluid Capacity 8 gal (29 l)
Engine Oil Capacity 6 gal (24 l)
Front Diff Fluid Capacity 8 gal (29 l)
Fuel Capacity 75 gal (284 l)
Hydraulic System Fluid Capacity 30 gal (115 l)
Operating Voltage 12 volts
Operating Weight 35,236 lbs (15,983 kg)
Rear Axle Oscillation 26 degrees
Rear Diff Fluid Capacity 8 gal (29 l)
Static Tipping Load – Bucket 26,228 lbs (11,897 kg)
Static Tipping Load – Forks 18,251 lbs (8,279 kg)
Static Tipping Load – Material Handler 13,290 lbs (6,028 kg)
Tire Size 20.5-25
Transmission Fluid Capacity 4 gal (14 l)
Turning Radius 18 ft (5 m)

Transmission

Max Speed Forward 22 mph (35 kph)
Max Speed Reverse 14 mph (22 kph)
Number of Forward Gears 4
Number of Reverse Gears 3
Transmission Type Power Shift
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