John Deere 4425 Combine Specifications and Features

The John Deere 4425 combine delivers high performance in various farming conditions. Equipped with a 4.5L, 6-cylinder engine, it provides 88 horsepower for smooth operations. Its grain tank capacity of 100 bushels ensures efficient harvesting, reducing downtime.

When selecting the right combine for your needs, the 4425’s hydraulic drive system offers precise control, making it ideal for farmers looking for reliable power in different terrains. Its adjustable header height further enhances flexibility, accommodating various crop types.

For optimal maintenance, ensure that the engine oil is changed regularly, and the air filter is checked for any blockages. The dual-speed fan helps with grain separation, making it easier to adapt to changing crop conditions.

John Deere 4425 Combine Specs

The John Deere 4425 combine offers impressive performance for medium to large-scale farming. It comes with a 4.5L, 6-cylinder engine that delivers 170 horsepower. This provides enough power for efficient grain harvesting across a variety of field conditions. With a 256-bushel grain tank, the combine minimizes downtime for unloading, allowing operators to keep working longer hours without interruption.

Its 20-foot cutter bar width ensures a wider cutting area, increasing harvesting efficiency. The 4425 is equipped with the Variable Stream Separator (VSS) system, which improves crop flow and reduces grain loss. This makes it particularly effective in challenging harvesting conditions like wet or heavy crops.

The 4425 is equipped with an advanced hydrostatic drive system, offering precise control of ground speed and enabling better handling on uneven terrain. This combined with a robust drivetrain means that operators can tackle large fields with ease while maintaining a steady, efficient harvesting speed.

Maintenance intervals are simplified with easy access to key components such as filters, belts, and the engine. Regular checks and routine servicing can keep the combine running smoothly season after season. The operator station is designed for comfort, with intuitive controls that minimize operator fatigue during long working hours.

Engine Specifications and Power Output

The John Deere 4425 combine is equipped with a robust 6.8L PowerTech 4045T engine. This engine delivers impressive performance, making the combine well-suited for demanding tasks in the field.

• Engine Type: 6.8L PowerTech 4045T, 4-cylinder turbocharged diesel engine
• Rated Power Output: 140 horsepower at 2,200 RPM
• Peak Torque: 410 Nm (302 lb-ft) at 1,400 RPM
• Fuel Tank Capacity: 185 liters (49 gallons)
• Air Filtration: Heavy-duty dual-element air cleaner

The engine’s 140 horsepower ensures optimal performance while maintaining fuel efficiency for long hours of operation. With a peak torque of 410 Nm, it provides the necessary power for effective harvesting across different soil types and conditions. The PowerTech engine is designed to reduce fuel consumption, enabling longer working hours between refueling stops.

For maintenance, the air filtration system is designed to keep the engine running smoothly by protecting it from dirt and debris. Routine checks and filter replacements will help maintain engine performance and extend the life of the machine.

Harvesting Capacity and Performance Features

The John Deere 4425 combine offers impressive harvesting capacity with a maximum throughput of up to 200 bushels per hour. Its 20-foot header width ensures efficient coverage, reducing time spent on each pass through the field. Equipped with a high-torque engine, the 4425 delivers consistent performance even in challenging conditions.

The machine’s variable speed fan system allows for optimal separation of grains, ensuring minimal loss during harvesting. It also features a large grain tank, capable of holding up to 150 bushels, reducing the need for frequent unloading. The unloading rate of 2.5 bushels per second increases efficiency during operation, allowing for faster field work and reduced downtime.

Advanced sensors monitor grain quality and moisture levels, providing real-time data that helps operators adjust settings for maximum yield. The combine’s quick-adjust header system enhances versatility, making it adaptable to a range of crop types and conditions, from wheat to corn.

For a smoother operation, the John Deere 4425 comes with an ergonomic cab design, reducing operator fatigue during long hours in the field. Enhanced visibility and intuitive controls ensure the machine operates at its peak, even under challenging weather conditions.

Maintenance Requirements and Service Intervals

Perform regular maintenance on the John Deere 4425 to ensure reliable operation and extend its lifespan. Follow the manufacturer’s recommendations for service intervals and use quality parts during replacements.

Check the engine oil after every 100 hours of operation. Change the oil and replace the oil filter every 200 hours to maintain engine performance. Inspect the air filter regularly, cleaning it every 50 hours and replacing it after 200 hours of use.

Inspect the fuel system for leaks or blockages every 100 hours. Replace the fuel filter every 500 hours to prevent engine performance issues.

For the hydraulic system, check the fluid level and condition every 100 hours. Change the hydraulic fluid and filters every 1000 hours of use to maintain smooth operation.

The cooling system requires a flush and replacement of the coolant every 1200 hours. Ensure the radiator is free of debris and inspect hoses for leaks every 100 hours.

Inspect and grease the bearings and pivots of the auger and other moving parts every 50 hours. Tighten any loose bolts and check for wear during these inspections to avoid unexpected breakdowns.

Finally, inspect belts, chains, and tires every 100 hours. Replace worn parts promptly to prevent further damage to the machine.