2017 DEERE 640L at www.martinequipment.com2017 DEERE 640L at www.martinequipment.com

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The 640L Cable Skidder was built from with valuable operator input. All L-Series models feature more robust heavy-duty axles. The new pressurized continuous-lube system and independent axle filters further improve durability and extend life — up to 15,000 hours. The 640L will not only get you up and running, but keep you in the game longer.

• Features a high-performance EPA Final Tier 4 (FT4)/EU Stage IV 6.8L PowerTech™ PSS diesel engine.
• The easy-to-use CVT transmission combines the smoothness and operating ease of a hydrostatic transmission with the fuel efficiency of a lockup torque converter.
• L-Series Skidders deliver more horsepower and stability options — for the serious performance you need to stay on top of your game.
• The cab is 25-percent roomier and 50-percent quieter.
• John Deere forestry technology solutions are there to help you, Ultimate Uptime, ForestSight™, and optional TimberNavi™.
• Quick and easy serviceability.

• Our FT4/Stage IV diesel engines meet emission regulations without sacrificing power or torque. We built on our EPA Interim Tier 4 (IT4)/EU Stage IIIB solution to deliver the best combination of performance, efficiency, and reliability. These technologies are simple and fluid efficient.
• During normal operating conditions, the engine's natural heat breaks down trapped particulate matter and cleans the exhaust filter without impacting machine operation. Ash-service intervals for the diesel particulate filter (DPF) are condition based, meaning the machine will notify the operator before service is required. Typically, ash service is not necessary until the first engine overhaul. Machine application, regular maintenance practices, and type of lubricating oil impact ash-service intervals.
• John Deere FT4 engines maintain engine performance while minimizing total fluid consumption — diesel fuel plus diesel exhaust fluid (DEF). The exceptionally low DEF consumption rate reduces the need for DEF by four to six times compared to some other FT4 systems.

• L-Series machines combine best-in-class horsepower and an impressive power-to-weight ratio with a constant engine speed — for superb responsiveness and maximum efficiency. Better machine balance optimizes pulling power, while improving stability when climbing hills, navigating adverse terrain, or hauling bigger payloads.
• Engage all four tires, or just the front two or rear two as needed, to maneuver through tough terrain or out of tight spots.
• Electrohydraulic (EH) controls deliver one-of-a-kind operating ease and smooth control for faster combined-function cycle times.

• The cab is 25-percent roomier and 50-percent quieter. Other fatigue-beating creature comforts include a more efficient HVAC system, improved ergonomic controls, and plenty of storage space.
• Opt for a rotating high-backed seat with joystick steering. The rotating seat improves rearward visibility and minimizes neck turn.
• Six high-intensity halogen lights are standard when you need to extend your workday beyond daylight. For additional illumination, opt for a working-light or LED package.
• Multiple operators can adjust control settings to their individual preferences and save favorite configurations, reducing reprogramming time and helping keep operators productive and on the job.
• Armrest-mounted electrohydraulic (EH) controls provide fingertip control of all machine functions and turn with you when you use the optional rotating seat. Optional joystick steering is smooth and responsive, providing intuitive, low-effort control of steering, direction, and ground speed.

• Straight bushings at all blade joints deliver longer, trouble-free life and are easier to replace. Grease-thru pins ensure even lubrication and are more resistant to dust, rust, and debris.
• All L-Series models feature more robust heavy-duty axles. New pressurized continuous-lube system and independent axle filters further improve durability and extend life — up to 15,000 hours. Axle oil-pressure monitoring alerts the operator if a leak occurs.
• The beefier roller-bearing articulation joint has been updated for longer life.
• The number of relays and switches has been greatly reduced, simplifying maintenance of the electrical system. Diagnostic software makes it easy to troubleshoot any wiring issues.

• The new CVT transmission enables a constant engine speed, reducing engine wear while ensuring excellent fluid economy. Proven components, simplified electronics, and internally routed hoses further bolster durability.
• No more shifting — or "shift shocks" due to surging rpm. Simply set the maximum speed and let the transmission do the rest. Configurable speed ranges eliminate the need to hunt for the correct gear, shortening the learning curve for new operators while helping experienced operators maximize productivity.


Engine Manufacturer
John Deere
Engine Model
PowerTech PSS 6.8L
Emission Rating
Tier 4
Displacement, ltr (Inches³)
6.8 (414)
Engine Output, kW (hp)
163 (218)
Engine Torque, Nm (lbf / ft)
979 (722)
Continuous Variable Transmission
Front Axle
Inboard planetary
Rear Axle
Inboard planetary
Service Brake Type
Wet discs


Overall Length, mm (inches)
7591 (298.9)
Height Over Cab, mm (inches)
3365 (132.5)
Overall Width, mm (inches)
3233 (127.3)
Wheelbase, mm (inches)
3680 (144.8)
Dozer Blade Height, mm (inches)
687.6 (27.1)
Ground Clearance, mm (inches)
555 (21.8)
Dozer Blade Width, mm (inches)
2192 (86.3)
Dozer Blade - Dig Depth, mm (inches)
359 (14.1)
Steering Articulation Angle, ± °


Fuel Tank, ltr (gallons (US))
342.2 (90.4)
Hydraulic Tank, ltr (gallons (US))
123.6 (32.6)
Alternator Output, Amp


Travel Speed, kph (mph)
24.74 (15.37)
Oscillation Point
Front Axle
Oscillation Angle, ± °
Rated Line Pull, kN (lbf)
182.3 (41000)
Rated Line Speed, m/min (ft/min)
19.2 (63)
System Voltage, V
Axial Piston


Operating Weight, kg (lbs)
16686 (36787)