Categories ↠ Wheel Loaders ↠ John Deere 644A

John Deere 644A Wheel Loader

Category: Wheel Loaders ➔
Manufacturer: John Deere ➔
Model: 644A ➔

General Specifications

Bucket

Breakout Force	41,515 lbs (18,831 kg)
Bucket Capacity - heaped	3 cu yd (2 cu m)
Bucket Capacity - struck	2 cu yd (2 cu m)
Bucket Width	9 ft (3 m)
Dump Clearance at Max Raise	9 ft (3 m)

Dimensions

Ground Clearance	2 ft (0 m)
Height - Top of Cab	10 ft (3 m)
Hinge Pin - Max Height	12 ft (4 m)
Length with Bucket on Ground	21 ft (6 m)
Reach at Max Lift and Dump	3 ft (1 m)
Wheelbase	9 ft (3 m)

Engine

Aspiration	Turbocharged
Displacement	404 cu in (6,620 cu cm)
Gross Power	141 hp (105 kw)
Net Power	131 hp (98 kw)
Power Measured @	2400 rpm
Torque Measured @	1600 rpm

Hydraulic System

Pump Flow Capacity	60 gpm (227 lpm)
Pump Type	Variable displacement type pump
Relief Valve Setting	2250 psi

Operating Specifications

Alternator Supplied Amperage	55 amps
Cooling System Fluid Capacity	9 gal (34 l)
Engine Oil Fluid Capacity	4 gal (16 l)
Front Axle/Diff Fluid Capacity	6 gal (23 l)
Fuel Capacity	50 gal (189 l)
Hydraulic System Fluid Capacity	18 gal (66 l)
Operating Voltage	12 volts
Operating Weight	2,520 lbs (1,143 kg)
Rear Axle Oscillation	22 degrees
Rear Axle/Diff Fluid Capacity	7 gal (25 l)
Static Tipping Weight	18,604 lbs (8,439 kg)
Tire Size	16-24 / 20.5- 25
Transmission Fluid Capacity	10 gal (37 l)
Turning Radius	16 ft (5 m)

Transmission

Max Speed - Forward	23 mph (37 kph)
Max Speed - Reverse	10 mph (15 kph)
Number of Forward Gears	4
Number of Reverse Gears	2
Transmission Type	Powershift Transmission

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