John Deere 644A Wheel Loader

Weights
Operating Weight

2520 lb

Static Tipping Weight

18604 lb

Boom / Stick / Bucket
Bucket Capacity - Heaped

2.5 yd3

Bucket Capacity - Struck

2.05 yd3

Breakout Force

41515 lb

Engine & Fuel System
Engine Make

2240

Engine Oil Fluid Capacity

4.3 gal

Fuel Capacity

50 gal

Gross Power

141 hp

Max Torque

345 lb ft

Torque Measured @

1600 rpm

Net Power

131 hp

Power Measured @

2400 rpm

Aspiration

turbocharged

Cooling System Fluid Capacity

9 gal

Displacement

404 cu in

Hydraulic System
Pump Flow Capacity

60 gal/min

Pump Type

Variable displacement type pump

Relief Valve Setting

2250 psi

Dimensions, Wheels & Tires
Tire Size

16-24 / 20.5- 25

Wheelbase

8.67 ft in

Dump Clearance At Max Raise

9.25 ft in

Ground Clearance

1.44 ft in

Turning Radius

15.5 ft in

Height To Top Of Cab

10.17 ft in

Battery & Electrical System
Alternator Supplied Amperage

55 A

Operating Voltage

12 V

Transmission
Transmission Fluid Capacity

9.8 gal

Transmission Type

powershift transmission

Max Speed - Forward

23 mph

Max Speed - Reverse

9.5 mph

Number Of Forward Gears

4

Number Of Reverse Gears

2

Technical Specs
Bucket Width

8.7 ft in

Length With Bucket On Ground

20.67 ft in

Hinge Pin - Max Height

11.85 ft in

Reach At Max Lift And Dump

2.92 ft in

Rear Axle/Diff Fluid Capacity

6.5 gal

Rear Axle Oscillation

22 degrees