John Deere 644B

John Deere 644B industrial tractor photo
1974 - 1980
Wheel Loader
ManufacturerJohn Deere
TypeWheel Loader
John Deere 644B Engine
John Deere 8.7L 6-cyl diesel
Fuel tank56 gal
212.0 L
Engine details ...
John Deere 644B Power
Engine (gross)160 hp
119.3 kW
Engine (net)145 hp
108.1 kW
Chassis4x4 articulated 4WD
Final drivesinboard planetary
Steeringarticulated power
Brakeshydraulic wet disc
CabFour-post ROPS with canopy. Cab optional.
No photos of the John Deere 644B are currently available. To submit yours, email it to Photos may only be used with the permission of the original photographer.
Typeopen center
Pressure2250 psi
155.1 bar
Pump flow62.5 gpm
236.6 lpm
Steering flow26.5 gpm
100.3 lpm
Steering press.2350 psi
162.0 bar
Dimensions & Tires
Wheelbase104 inches
264 cm
Weight28100 lbs
12746 kg
Front tire20.5-25
Rear tire20.5-25
Full dimensions and tires ...
Charging systemalternator
Battery volts12
644B reference literature
Construction Purchasing Guide published in 1974, by John Deere
Page information
Contact: Peter Easterlund
Updated on September 9, 2021
Copyright 2021 TractorData LLC
©2000-2021 -®. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.