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John Deere 644J High-lift Wheel Loader

Bucket

Breakout Force30574 lbs (13,868 kg)
Bucket Capacity - heaped4 cu yd (3 cu m)
Bucket Width9.8 ft (3 m)
Dump Clearance at Max Raise11.1 ft (3 m)

Dimensions

Ground Clearance1.5 ft (0 m)
Height - Top of Cab11.2 ft (3 m)
Hinge Pin - Max Height15 ft (5 m)
Length with Bucket on Ground28 ft (9 m)
Reach at Max Lift and Dump3.9 ft (1 m)
Wheelbase10.5 ft (3 m)

Engine

AspirationTurbocharged charge air cooled
Displacement414 cu in (0 cu m)
Engine Model6068H
Net Power185 hp (138 kw)
Number of Cylinders6
Power Measured @2200 rpm
Torque Measured @1400 rpm
Torque Rise55%

Hydraulic System

Dump Time1.9 seconds
Lower Time2.8 seconds
Pump Flow Capacity68 gpm (257 lpm)
Pump TypeVariable axial piston
Raise Time5.9 seconds
Relief Valve Setting3600 psi

Operating Specifications

Alternator Supplied Amperage80 amps
Cooling System Fluid Capacity7.8 gal (30 l)
Engine Oil Fluid Capacity6.5 gal (25 l)
Front Axle/Diff Fluid Capacity5.9 gal (22 l)
Fuel Capacity93 gal (352 l)
Hydraulic System Fluid Capacity31 gal (117 l)
Operating Voltage24 volts
Operating Weight40620 lbs (18,425 kg)
Rear Axle Oscillation24 degrees
Rear Axle/Diff Fluid Capacity5.9 gal (22 l)
Static Tipping Weight27689 lbs (12,560 kg)
Tire Size23.5 R25
Transmission Fluid Capacity7.1 gal (27 l)
Turning Radius18 ft (5 m)

Transmission

Max Speed - Forward22 mph (35 kph)
Max Speed - Reverse15.5 mph (25 kph)
Number of Forward Gears4
Number of Reverse Gears3
Transmission TypeAutomatic Powershift

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39.96250 \\ -83.00610 \\ Columbus \\ PA