John Deere 644B Wheel Loader

Weights
Operating Weight

28100 lb

Static Tipping Weight

22905 lb

Boom / Stick / Bucket
Bucket Capacity - Heaped

2.5 yd3

Bucket Capacity - Struck

2.05 yd3

Breakout Force

24120 lb

Engine & Fuel System
Engine Make

2240

Engine Oil Fluid Capacity

5.5 gal

Fuel Capacity

56 gal

Gross Power

160 hp

Max Torque

432 lb ft

Torque Measured @

1500 rpm

Net Power

145 hp

Number Of Cylinders

6

Power Measured @

2200 rpm

Aspiration

turbocharged

Cooling System Fluid Capacity

12.3 gal

Displacement

531 cu in

Hydraulic System
Pump Flow Capacity

58.2 gal/min

Pump Type

Gear

Relief Valve Setting

2250 psi

Dimensions, Wheels & Tires
Tire Size

14.5-25 / 20.5-25

Wheelbase

8.67 ft in

Dump Clearance At Max Raise

9.33 ft in

Ground Clearance

1.66 ft in

Turning Radius

15.5 ft in

Height To Top Of Cab

10.63 ft in

Battery & Electrical System
Alternator Supplied Amperage

42 A

Operating Voltage

12 V

Transmission
Transmission Fluid Capacity

9.8 gal

Transmission Type

Power Shift Planetary

Max Speed - Forward

25.8 mph

Max Speed - Reverse

10.2 mph

Number Of Forward Gears

4

Number Of Reverse Gears

2

Technical Specs
Bucket Width

8.73 ft in

Length With Bucket On Ground

21.1 ft in

Hinge Pin - Max Height

12 ft in

Reach At Max Lift And Dump

2.89 ft in

Rear Axle/Diff Fluid Capacity

6.3 gal

Rear Axle Oscillation

22 degrees