Features & Specs
  • Interim Tier 4 certified engine
  • Up to 25 percent average fuel consumption reduction
  • Brushless generator converts mechanical energy to electrical energy
  • Engine runs at constant rpm
  • With John Deere WorkSight™, JDLink™ monitoring provides real-time machine utilization and health data, plus location information. Fleet Care proactively suggests maintenance to correct problems early before they turn into costly downtime. And Service ADVISOR™ Remote enables your dealer to read diagnostic codes, record performance data, and even update software without a trip to the jobsite. It’s the most comprehensive, easy-to-use suite of technology available for increasing uptime and productivity while lowering operating costs. And it’s only available from John Deere.
Horsepower 229
Bucket Capacity 4.25 yd3
Fuel Tank Capacity 105 gal.
Fuel Consumption 1.8-3.3 gal/hr
Weight 41,300 lbs
Width 10 ft 8 in
Transport Length 27 ft 4 in
Height 11 ft 3 in


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John Deere 644K Hybrid Wheel Loader

Engine
Manufacture and Model John Deere PowerTech PSX 6068
Non-Road Emission Standards EPA Interim Tier 4/EU Stage IIIB with Hybrid-Electric Drive
Net Peak Power 229 hp (171 kW) @ 1,700 rpm
Net Peak Torque 730 lb. ft. (991 Nm) @ 1,400 rpm
Displacement 414 cu. in. (6.8 L)
Air Cleaner Under-hood, dual element dry type, restriction indicator in cab monitor for service
Electrical System 24 volt with 100 amp alternator
Fan Drive Hydraulically driven, proportionally controlled, fan aft of coolers
Batteries (two 12 volt) 950 CCA (each)

Transmission    
Travel Speeds Forward Reverse
-- Range 1 4.5 mph (7.5 km/hr) 4.5 mph (7.5 km/hr)
-- Range 2 8.7 mph (14.0 km/hr) 8.7 mph (14.0 km/hr)
-- Range 3 15.5 mph (25.0 km/hr) 15.5 mph (25.0 km/hr)
-- Range 4 24.9 mph (40.0 km/hr) 24.9 mph (40.0 km/hr)

Capacities      
Fuel Tank (with ground level fueling) 105 gal (397 L)
Engine Cooling System 58 qt. (54.9 L)
Inverter Cooling System 6 qt. (5.7 L)
Engine Oil (including vertical spin-on filter) 28.5 qt. (27 L)
Transmission Fluid with Vertical Filter 40 qt. (37.9 L)
Axle Oil (front and rear, each) 23 qt. (22 L)
Hydraulic Reservoir and Filter 29 gal. (110 L)


Dimensions (with Pin On Bucket)  
A) Height to Top of Cab & Canopy 11 ft. 3 in. (3.43 m)
B) Hood Height 8 ft. 4 in. (2.53 m)
C) Ground Clearance 18.1 in. (461 mm)
D) Length from Centerline to Front Axle 5 ft. 3 in. (1.60 m)
E) Wheelbase 10 ft. 8 in. (3.26 m)
F) Overall Length, Bucket on Ground 26 ft. 7 in. (8.10 m)
G) Height to Hinge Pin, Fully Raised 13 ft. 6 in. (4.12 m)
H) Dump Clearance, 45 deg., Full Height 9 ft. 7 in. (2.91 m)
I) Reach, 45-deg. Dump, Full Height 3 ft. 6 in. (1.06 m)
J) Reach, 45-deg. Dump, 7-ft Clearance 5 ft. 3 in. (1.61 m)
K) Maximum Digging Depth 4.2 in. (106 mm)
L) Maximum Rollback at Ground Level 42 deg.
M) Maximum Rollback, Boom Fully Raised 55 deg.
N) Maximum Bucket Dump Angle, Fully Raised 50 deg.


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