John Deere 644A Wheel Loader Specs

Category: Wheel Loaders ➔
Manufacturer: John Deere ➔
Model: 644A ➔

Bucket

John Deere 644A Wheel Loader Bucket specifications
Breakout Force	41,515.00 lbs (18,830.91 kg)
Bucket Capacity - Heaped	2.5 cu yd
Bucket Capacity - Struck	2.05 cu yd
Bucket Width	8.70 ft (2.65 m)
Dump Clearance At Max Raise	9.25 ft (2.82 m)

Dimensions

John Deere 644A Wheel Loader Dimensions specifications
Ground Clearance	1.44 ft (0.44 m)
Height To Top Of Cab	10.17 ft (3.10 m)
Hinge Pin - Max Height	11.85 ft (3.61 m)
Length With Bucket On Ground	20.67 ft (6.30 m)
Reach At Max Lift And Dump	2.92 ft (0.89 m)
Wheelbase	8.67 ft (2.64 m)

Engine

John Deere 644A Wheel Loader Engine specifications
Aspiration	Turbocharged
Displacement	404.00 cu in (6,620.39 cu cm)
Engine Make	2240
Gross Power	141.00 hp (105.15 kw)
Max Torque	345.00 lbs ft (467.75 nm)
Net Power	131.00 hp (97.69 kw)
Power Measured @	2400 rpm
Torque Measured @	1600 rpm

Hydraulic System

John Deere 644A Wheel Loader Hydraulic System specifications
Pump Flow Capacity	60.00 gpm (227.10 lpm)
Pump Type	Variable displacement type pump
Relief Valve Setting	2250 psi

Operational

John Deere 644A Wheel Loader Operational specifications
Alternator Supplied Amperage	55 amps
Cooling System Fluid Capacity	9.00 gal (34.07 l)
Engine Oil Fluid Capacity	4.30 gal (16.28 l)
Front Axle/Diff Fluid Capacity	6.00 gal (22.71 l)
Fuel Capacity	50.00 gal (189.25 l)
Hydraulic System Fluid Capacity	17.50 gal (66.24 l)
Operating Voltage	12 V
Operating Weight	2,520.00 lbs (1,143.05 kg)
Rear Axle Oscillation	22 degrees
Rear Axle/Diff Fluid Capacity	6.50 gal (24.60 l)
Static Tipping Weight	18,604.00 lbs (8,438.64 kg)
Tire Size	16-24 / 20.5- 25
Transmission Fluid Capacity	9.80 gal (37.09 l)
Turning Radius	15.50 ft (4.72 m)

Transmission

John Deere 644A Wheel Loader Transmission specifications
Max Speed - Forward	23.00 mph (37.01 kph)
Max Speed - Reverse	9.50 mph (15.29 kph)
Number Of Forward Gears	4
Number Of Reverse Gears	2
Transmission Type	Powershift Transmission

Our Main Office

Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200

About Us

Construction Equipment Guide covers the nation with its four regional newspapers, offering construction and industry news and information along with new and used construction equipment for sale from dealers in your area. Now we extend those services and information to the internet. Making it as easy as possible to find the news and equipment that you need and want.

Contents Copyrighted 2026, by Construction Equipment Guide, which is a Registered Trademark, registered in the U.S. Patent Office. Registration number 0957323. All rights reserved, nothing may be reprinted or reproduced (including framing) in whole or part without written permission from the publisher. All editorial material, photographs, drawings, letters, and other material will be treated as unconditionally assigned for publication and copyright purposes and are subject to Construction Equipment Guide’s unrestricted right to edit and comment editorially. Contributor articles do not necessarily reflect the policy or opinions of this publication.

Read our privacy policy here.
Mastodon