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John Deere 644GH Wheel Loader

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Bucket

Breakout Force38,045.00 lbs (17,256.94 kg)
Bucket Capacity - heaped4.00 cu yd (3.06 cu m)
Bucket Capacity - struck3.70 cu yd (2.83 cu m)
Bucket Width10.10 ft (3.08 m)
Dump Clearance at Max Raise9.70 ft (2.96 m)

Dimensions

Ground Clearance1.60 ft (0.49 m)
Height - Top of Cab11.30 ft (3.44 m)
Hinge Pin - Max Height13.20 ft (4.02 m)
Length with Bucket on Ground25.80 ft (7.86 m)
Reach at Max Lift and Dump3.50 ft (1.07 m)
Wheelbase10.50 ft (3.20 m)
Width Over Tires9.00 ft (2.74 m)

Engine

AspirationTurbocharged and Aftercooled
Displacement466.00 cu in (7,636.39 cu cm)
Engine Model6076A
Gross Power196.00 hp (146.16 kw)
Net Power185.00 hp (137.96 kw)
Number of Cylinders6
Power Measured @2200 rpm
Torque Measured @1300 rpm

Hydraulic System

Dump Time1.8 seconds
Lower Time3.5 seconds
Pump Flow Capacity69.50 gpm (263.06 lpm)
Pump TypeGear pump type
Raise Time6.2 seconds
Relief Valve Setting3000 psi

Operating Specifications

Alternator Supplied Amperage95 amps
Cooling System Fluid Capacity7.60 gal (28.77 l)
Engine Oil Fluid Capacity6.40 gal (24.22 l)
Front Axle/Diff Fluid Capacity7.40 gal (28.01 l)
Fuel Capacity75.10 gal (284.25 l)
Hydraulic System Fluid Capacity30.40 gal (115.06 l)
Operating Voltage12 volts
Operating Weight36,634.00 lbs (16,616.92 kg)
Rear Axle Oscillation26 degrees
Rear Axle/Diff Fluid Capacity7.40 gal (28.01 l)
Static Tipping Weight29,712.00 lbs (13,477.15 kg)
Tire Size20.5-25
Transmission Fluid Capacity3.70 gal (14.00 l)
Turning Radius18.00 ft (5.49 m)

Transmission

Max Speed - Forward21.50 mph (34.60 kph)
Max Speed - Reverse13.70 mph (22.05 kph)
Number of Forward Gears4
Number of Reverse Gears3
Transmission TypePowershift
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39.96118 \\ -82.99879 \\ Columbus \\ OH \\ US \\ 43215