| Manufacturer | John Deere |
| Price | - |
| Model | 6620 Premium |
| Equipment Type | Utility Tractors |
| Factory |
JOHN DEERE 6620 PREMIUM POWER
| Engine (net) | 125hp / 93.2kW |
| PTO (claimed) | 110hp / 82.0kW |
ENGINE DETAIL
The John Deere 6620 Premium features a robust turbocharged 6-cylinder engine with a displacement of 6.8L, delivering a rated power of 125hp at 2300 RPM, which is optimal for demanding agricultural tasks. It provides significant torque output of 392 lb-ft at 1500 RPM, enhancing its performance in applications requiring high pulling power. Key considerations include the need for regular maintenance on valve clearances (0.014inches intake, 0.018inches exhaust) to ensure efficient operation, and the advantage of a wide operating RPM range (1300-2300 RPM) for versatile performance across various tasks.
| Description | John Deere 6068T turbocharged intercooled diesel 6-cylinder liquid-cooled |
| Displacement | 414.1ci / 6.8L |
| Bore/Stroke | 4.19x5.00inches / 106x 127mm |
| Rated Power (ECE R24) | 125hp / 93.2kW |
| Rated RPM | 2300 |
| Idle RPM | 850-2460 |
| Operating RPM | 1300-2300 |
| Torque | 392.0lb-ft / 531.6Nm |
| Torque RPM | 1500 |
| Firing order | 1-5-3-6-2-4 |
| Starter | electric |
| Starter volts | 12 |
| Intake valve clearance | 0.014inches / 0.356mm |
| Exhaust valve clearance | 0.018inches / 0.457mm |
JOHN DEERE 6620 PREMIUM ENGINE
The John Deere 6620 Premium features a robust 6.8L 6-cylinder diesel engine, providing reliability and high torque, essential for demanding agricultural tasks. With a substantial fuel tank capacity of 54.7 gallons (207.0 liters), it ensures extended operational hours between refueling, enhancing productivity in the field. However, consider the weight and size implications for transport and maneuverability in tight spaces, which may present challenges on smaller farms or uneven terrain.
| Description | John Deere 6.8L 6-cyl diesel |
| Fuel tank | 54.7gal / 207.0L |
TRANSMISSION 1
The John Deere 6620 Premium tractor features a PowrQuad Plus transmission, providing a partial power shift option across its 24 forward and reverse gears. This setup enhances operator efficiency by enabling seamless gear changes under load, making it ideal for varied field conditions. However, the complexity of the transmission may require more maintenance and operator training for optimal performance.
| Transmission | PowrQuad Plus |
| Type | partial power shift |
| Gears | 24 forward and reverse |
TRANSMISSION 2
The John Deere 6620 Premium features the AutoQuad II transmission, providing a partial power shift with 24 gears in both forward and reverse, optimizing performance across various applications. This allows for smooth transitions and efficient power management, especially in demanding conditions such as plowing or towing. While this transmission enhances productivity, operators may require additional training to fully master shifting techniques and maximize the tractor's potential.
| Transmission | AutoQuad II |
| Type | partial power shift |
| Gears | 24 forward and reverse |
MECHANICAL
The John Deere 6620 Premium features a 4x4 MFWD drivetrain, enhancing traction and stability in various terrains, making it ideal for diverse agricultural applications. Its hydrostatic power steering offers superior maneuverability, while the wet disc brakes provide consistent stopping power, essential for safety and control. The 24-speed partial power shift transmission allows for efficient speed changes, optimizing performance for tasks ranging from plowing to towing heavy loads.
| Chassis | 4x4 MFWD 4WD |
| Steering | hydrostatic power |
| Brakes | wet disc |
| Cab | Cab standard |
| Transmission | 24-speed partial power shift |
HYDRAULICS
| Type | closed center load sensing |
| Pressure | 2900psi / 200.0bar |
| Pump flow | 25.4gpm / 96.1lpm |
TRACTOR HITCH
| Rear Type | II/IIIN |
| Rear lift | 16,360lbs / 7420kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540/1000 |
JOHN DEERE 6620 PREMIUM TIRES
The John Deere 6620 Premium features standard agricultural tires, with front dimensions of 14.9R28 and rear 18.4R38, providing excellent traction and stability for field operations. The larger rear tires enhance flotation in softer soils, minimizing compaction, while the front tires offer responsive steering characteristics. However, consider the potential for additional wear on tires in extreme conditions or uneven terrain, which may require more frequent replacements.
| Standard tires (ag) | Front: 14.9R28. Rear: 18.4R38 |
JOHN DEERE 6620 PREMIUM WEIGHT
| 11,532lbs / 5230kg | |
| Max capacity | 18,740lbs / 8500kg |
| Max front axle | 9,039lbs / 4100kg 9,921lbs / 4500kg (braked axle) |
| Max rear axle | 15,210lbs / 6899kg |
DIMENSIONS & TIRES
The John Deere 6620 Premium, weighing 11,532 lbs (5,230 kg), boasts robust traction and stability, particularly with the rear tire size of 18.4R38 which enhances flotation in soft soil conditions. The front tire 14.9R28, while slightly narrower, aids in maneuverability and steering precision. However, the overall weight and tire configurations can pose challenges in extremely wet or uneven terrains, necessitating careful weight distribution and load management for optimal performance.
| Weight | 11,532lbs / 5230kg |
| Front tire | 14.9R28 |
| Rear tire | 18.4R38 |
6620 PREMIUM SERIAL NUMBERS
| Location | Right side of main tractor frame |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 90/115 |
| Battery volts | 12 |