Overview

The John Deere 9900 forage harvester is part of the 9000 Series forage harvesters, known for their throughput, durability, and precision in harvesting.

It is built to handle extra-heavy crop conditions with ease, delivering excellent productivity for farmers needing reliable and powerful forage processing machinery.

jd 9900 Specs

  • Type: Self-propelled forage harvester

  • Engine: 24.2 L Liebherr V12

  • Horsepower: Up to 956 hp

  • Transmission: Powershift with smooth shifting capabilities

  • Harvesting capacity: High throughput to handle tough crop conditions

  • Service intervals: 1000-hour engine maintenance interval for reduced downtime

  • Cooling: Longitudinally mounted engine with efficient cooling system

Engine Details

The John Deere 9900 forage harvester is powered by a robust 24.2-liter Liebherr V12 engine, tested extensively for durability and efficiency.

This engine delivers up to 956 horsepower, ensuring ample power for heavy-duty forage harvesting.

It features improved fuel efficiency and cleaner emissions, meeting modern environmental standards.

The engine is mounted longitudinally for better cooling and weight distribution, enhancing machine stability and serviceability.

Key Features

  • High horsepower engine providing strong performance

  • Efficient cooling system for optimal engine temperature control

  • Large capacity forage processing head compatible with a variety of attachments

  • Operator comfort with ergonomic cabin design and controls

  • Advanced technology integration for precise control and monitoring

  • Enhanced durability to withstand tough harvesting conditions

  • Easy service access and maintenance features

Performance

The John Deere 9900 forage harvester excels in delivering high throughput performance, effectively processing large volumes of forage material quickly and efficiently.

Its powerful engine, coupled with an advanced harvesting system, allows it to maintain reliability even under extreme crop conditions.

The smooth transmission and precise operator controls contribute to an optimal balance of speed and quality during harvesting.

Jd 9900 forage harvester Price

The retail price for a new John Deere 9900 forage harvester is approximately $539,500 as of 2024.

Pricing may vary based on additional features, customizations, attachments, and dealer location.

Manuals

Operators can access official John Deere 9900 forage harvester manuals via John Deere’s website or authorized dealers.

These manuals cover detailed instructions on operation, maintenance, troubleshooting, safety, and parts.

Attachments

The John Deere 9900 forage harvester supports various attachments, including:

  • Forage heads for corn, grass, and mixed crops

  • Pickup headers for swath pickup

  • Crop processing units for chopping and processing efficiency

  • Specialized gathering and chopping tools to enhance versatility across harvesting needs

Common Problems

  • Fuel tank design issues causing fuel starvation on hillsides, leading to engine stalling even when fuel appears sufficient

  • Exhaust placement low and forward can cause operator discomfort due to exhaust fumes, although fixes have been engineered

  • Early reports of harsh exhaust emissions compared to other diesel machines

  • General maintenance challenges typical of high-horsepower forage harvesters in tough conditions

What are the main advantages of the John Deere 9900 forage harvester？

The main advantages of the John Deere 9900 forage harvester include:

  • Exceptional Performance and Power: Powered by a robust 24L Liebherr V12 engine delivering up to 956 horsepower, the 9900 offers high throughput and processing capacity, making it ideal for large-scale farming operations requiring fast, efficient forage harvesting.​

  • Fuel Efficiency and Extended Runtime: The machine features a low engine speed concept and optimized driveline for better fuel economy, combined with a large 1,500-liter fuel tank and a 90-liter urea tank, allowing longer operating hours with fewer refueling stops.​

  • Advanced Processing Technology: Equipped with heavy-duty kernel processors (John Deere Premium KP™ or XStream KP™) and ProStream crop flow system, it enhances silage quality by ensuring thorough processing and minimal crop damage.​

  • Durability with Dura Line Wear Parts: The harvester includes Dura Line high-wear parts that last up to four times longer than standard components, reducing maintenance costs and downtime.​

  • Operator Comfort and Advanced Controls: The spacious ergonomic cab includes features like ClimaTrak™ climate control, intuitive controls, and optional automated steering and monitoring systems (HarvestLab™ 3000, AutoLoc™), which improve operator comfort, reduce fatigue, and increase productivity.​

  • Improved Crop Analysis and Documentation: Integrated sensor systems provide real-time data on forage dry matter and composition, enabling optimized feed quality management directly during harvesting.​

  • Versatile Attachments and Headers: The 9900 supports various headers and attachments tailored to different crop types and heights, facilitating versatile use across forage conditions.​

Overall, the John Deere 9900 forage harvester combines powerful performance, efficiency, durable components, advanced technology, and operator-centric design, making it a top-tier choice for efficient, high-quality forage harvesting operations.

Conclusion

The John Deere 9900 forage harvester is a top-tier choice for large-scale farming operations requiring robust power and high throughput.

Its powerful Liebherr V12 engine, efficient cooling, and durability make it well-suited for heavy crop loads.

While some early design quirks have presented challenges, ongoing improvements have addressed these issues.

With proper maintenance and care, the 9900 remains a productive and reliable forage harvesting solution.