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John Deere 644K Wheel Loader

Bucket

Breakout Force33903 lbs (15,378 kg)
Bucket Capacity - Smallest4.1 cu yd (3 cu m)
Dump Clearance at Max Raise 9.5 ft (3 m)
Largest bucket capacity4.2 cu yd (3 cu m)

Capacities

Heaped Capacity4.2 cu yd (3 cu m)
Hydraulic Tank27.8 gal (105 l)
Transmission6.1 gal (23 l)

Dimensions

Height - Top of Cab11.3 ft (3 m)
Hinge Pin - Max Height13.6 ft (4 m)
Length with Bucket on Ground27.3 ft (8 m)
Reach at Max Lift and Dump5.3 ft (2 m)
Turning Circle43.6 ft (13 m)
Wheelbase10.7 ft (3 m)
Width Over Tires9.5 ft (3 m)

Driveline

Differential lockFront- Locking, Rear- Open
Parking Brake TypeWet Multi Disc - Transmission
Ride control systemOptional
Service Brake - LocationAxle Inboard
Service Brake ActuationHydraulic
Service Brake TypeWet Disc
Tire size - Standard23.5 R25

Engine

Alternator130 amps
Displacement549.3 cu in (0 cu m)
Emission levelTier 4
Engine MakeJohn Deere
Engine ModelPowerTech PSS 6090
Engine Output-Net232 hp (173 kw)
MakeDeere PowerTech
ModelPSX 6090
Net Power232 hp (173 kw)
PumpPiston
Rated Speed1700 rpm
System Voltage24 V
Torque783.3 lbs ft
Torque Rise56%
Transmission TypePowershift

Operating Specifications

Front Axle/Diff Fluid Capacity5.9 gal (22 l)
Fuel Capacity104.9 gal (397 l)
Operating Weight41186.8 lbs (18,682 kg)
Rated Bucket Capacity4.0 cu yd (3 cu m)
Rear Axle/Diff Fluid Capacity5.9 gal (22 l)

Transmission

Pump Flow78.5 gpm (297 lpm)
System Pressure251.7 psi

Weights

Operational Weight41188 lbs (18,683 kg)

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39.96250 \\ -83.00610 \\ Columbus \\ PA