John Deere Product Details
643L-III
Increase Uptime with Easy Serviceability
The L-III Wheeled Feller Bunchers are designed for efficient maintenance with ground-level access to daily service points, swing-out cooler doors, and removable engine panels, helping reduce downtime and repair costs. Features like remote diagnostics via John Deere Connected Support™ and extended hydraulic filter intervals further streamline upkeep.
More Comfort For All Day Productivity
Operators in the L-III Series Wheeled Feller Buncher experience less fatigue and greater productivity thanks to features like large visibility windows, customizable controls, and low-effort electrohydraulic steering. The power-management system lets them fine-tune output to the felling head and drive motors for optimal performance.
TimberMatic™ Maps and TimberManager™
TimberMatic™ Maps offers a real-time production view, optimized routes, and shared machine connectivity, enhancing jobsite awareness. TimberManager™ allows web-based jobsite monitoring, enabling progress tracking and fleet optimization to streamline communication and boost efficiency.
Final Tier 4/EU Stage V Engine
| Manufacturer | John Deere |
| Model | PowerTech™ PSS 6.8L |
| Non-road Emission Standards | EPA Final Tier 4/EU Stage V |
| Speed Gross Power | 1900 rpm |
| Gross Power | 219 hp |
| Speed Gross Torque | 1600 rpm |
| Gross Torque | 680 lb-ft |
| Cylinders | 6 |
| Valves Per Cylinder | 4 |
| Engine Displacement | 415 cu in. |
| Engine Bore And Stroke | 4.17 x 5 inchXInch |
| Fuel System | High-pressure common rail |
| Aspiration | Turbocharged and charge-air cooled |
| Air Cleaner | Dual stage with safety element and dust-unloader valve |
| Engine Cold-Start System | Glow plugs |
Tier 3/EU Stage IIIA Engine
| Manufacturer | John Deere |
| Model | PowerTech™ Plus 6.8L |
| Non-road Emission Standards | EPA Tier 3/EU Stage IIIA |
| Speed Gross Power | 1900 rpm |
| Gross Power | 240 hp |
| Speed Gross Torque | 1600 rpm |
| Gross Torque | 737 lb-ft |
| Cylinders | 6 |
| Valves Per Cylinder | 4 |
| Engine Displacement | 415 cu in. |
| Engine Bore And Stroke | 4.17 x 5 inchXInch |
| Fuel System | High-pressure common rail |
| Aspiration | Turbocharged and charge-air cooled |
| Air Cleaner | Dual stage with safety element and dust-unloader valve |
| Engine Cold-Start System | Glow plugs |
Cooling
| Cooling System Type | Heavy-duty radiator with continuous deaeration tank and recovery reservoir |
| Fan Drive Type | Hydraulic, variable speed, reversing |
Powertrain
| Transmission Type | Infinitely variable hydrostatic with 2-speed gearbox |
| Speed Ranges, Forward And Reverse | 2 |
| Maximum Speed With 28L-26 Tires Low Gear | 5 mph |
| Maximum Speed With 28L-26 Tires High Gear | 10.8 mph |
| Front Axle Oscillation, Stop To Stop | 30 degree (angle) |
| Axle Options | 1400 Extreme Duty and 1400 Super Wide Extreme Duty (SWEDA™) |
| Axles Differential (Front And Rear) | Hydraulic-locking, operated-on-the-go, closed-center differential lock |
| Steering Type | Fully hydraulic, joystick |
| Articulation Angle | 45 degree (angle) |
| Service Brakes | Inboard mounted, wet disc, oil cooled, self-adjusting and self-equalizing front and rear axles |
| Parking Brake | Automatically spring-applied, hydraulically released, sealed and lubricated, wet multi-disc |
Hydraulics
| Main Pump Type | Open circuit, axial piston, variable displacement |
| Maximum Displacement (Per Revolution) | 5.49 cu in. |
Electrical
| Total Voltage | 24 V |
| Voltage Per Battery | 12 V |
| Number Of Batteries | 2 |
| Battery Capacity (Each) | 950 CCA |
| Alternator Rating | 150 amp |
| Lights (Optional) | 14 |
Refill Capacities
| Fuel Tank | 104.6 gal. |
| Hydraulic Reservoir | 44.7 gal. |
| Diesel-Exhaust Fluid (DEF) | 5.2 gal. |
Operating Weight
| Machine Weight Less Felling Head | 30704 lb. |
| Machine Weight With FD45 Twin-Post Disc Saw | 36120 lb. |
| Machine Weight With FD22B Single-Post Disc Saw | 37659 lb. |
| Machine Weight With FD55 Twin-Post Disc Saw | 37480 lb. |
Machine Dimensions
| Tire Size Used For Measuring Machine Dimensions | 28L-26 |
| Overall Height | 126.6 in. |
| Overall Width With 28-in. Tires And 1400 Axles | 114.7 in. |
| Overall Length (Less Felling Head) | 247.7 in. |
| Ground Clearance | 19 in. |
| Wheelbase | 119 in. |
Shipping Dimensions
| Tire Size Used For Measuring Shipping Dimensions | 28L-26 |
| Felling Head Used To Measure Shipping Dimensions | FD45 |
| Overall Height | 126.6 in. |
| Overall Width With 28-in. Tires And 1400 Axles | 114.7 in. |
| Overall Length (With Felling Head) | 289 in. |
