John Deere 644EH Wheel Loader

Bucket

Breakout Force 34,257 lbs (15,539 kg)
Bucket Capacity – heaped 4 cu yd (3 cu m)
Bucket Capacity – struck 3 cu yd (2 cu m)
Bucket Width 10 ft (3 m)
Dump Clearance at Max Raise 10 ft (3 m)

Dimensions

Ground Clearance 2 ft (1 m)
Height – Top of Cab 11 ft (3 m)
Hinge Pin – Max Height 13 ft (4 m)
Length with Bucket on Ground 26 ft (8 m)
Reach at Max Lift and Dump 3 ft (1 m)
Wheelbase 11 ft (3 m)
Width Over Tires 9 ft (3 m)

Engine

Aspiration Turbocharged
Displacement 466 cu in (7,636 cu cm)
Engine Model 6076A
Gross Power 193 hp (144 kw)
Net Power 185 hp (138 kw)
Number of Cylinders 6
Power Measured @ 2200 rpm
Torque Measured @ 1400 rpm

Hydraulic System

Dump Time 1.9 seconds
Lower Time 3.5 seconds
Pump Flow Capacity 66 gpm (248 lpm)
Pump Type Gear
Raise Time 6.2 seconds
Relief Valve Setting 2850 psi

Operating Specifications

Alternator Supplied Amperage 65 amps
Cooling System Fluid Capacity 8 gal (29 l)
Engine Oil Fluid Capacity 6 gal (24 l)
Front Axle/Diff Fluid Capacity 6 gal (23 l)
Fuel Capacity 75 gal (284 l)
Hydraulic System Fluid Capacity 30 gal (115 l)
Operating Voltage 12 volts
Operating Weight 35,306 lbs (16,015 kg)
Rear Axle Oscillation 26 degrees
Rear Axle/Diff Fluid Capacity 6 gal (23 l)
Static Tipping Weight 29,435 lbs (13,352 kg)
Tire Size 20.5-25
Transmission Fluid Capacity 4 gal (13 l)
Turning Radius 18 ft (5 m)

Transmission

Max Speed – Forward 26 mph (41 kph)
Max Speed – Reverse 16 mph (26 kph)
Number of Forward Gears 4
Number of Reverse Gears 3
Transmission Type Power Shift
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