John Deere 9420R Tractor Parts

9420R parts and accessories

The John Deere 9420R, manufactured from 2007 to 2011, is a powerful four-wheel drive tractor renowned for its performance in demanding agricultural applications. Powered by a robust 12.5L John Deere PowerTech diesel engine delivering around 425 horsepower, and a PTO horsepower rating of approximately 345, the 9420R quickly became popular with farmers needing high horsepower for tillage and planting operations.

The John Deere 9420R was introduced as part of the R series tractor lineup, replacing earlier models and offering advancements in power, comfort, and technology. Production spanned from 2007 to 2011. This tractor features a 12.5L John Deere PowerTech engine, producing around 425 horsepower and fueled by diesel. The transmission is typically a powershift transmission, offering smooth and efficient gear changes under load. The PTO horsepower is approximately 345 hp, available at 1000 RPM. The hydraulic system boasts a high capacity, providing ample flow for implements requiring hydraulic power. A Category IV 3-point hitch enables the use of large, modern implements. The 9420R is commonly used in row crop farming, tillage operations, and large-scale planting, excelling in tasks requiring significant drawbar pull. What distinguishes the 9420R is its high horsepower rating, advanced transmission, and robust hydraulic system, making it a top choice for farmers needing maximum power and performance in the field. It offered a significant step up in performance and efficiency compared to earlier John Deere articulated tractors.

Specifications

Engine	John Deere PowerTech 12.5L 425 HP Diesel
PTO HP	345 HP @ 1000 RPM
Transmission	Powershift, 18 forward/6 reverse speeds
Hydraulics	56 GPM, 4-5 remotes
3-Point Hitch	Category IV, 17,200 lbs lift capacity
Fuel Capacity	200 gallons
Weight	43,000 lbs
Years Produced	2007-2011

Maintenance Tips

Engine Oil & Filter: Change engine oil and filter every 250-300 hours using John Deere-recommended oil and filters for optimal engine life.
Hydraulic System: Regularly check hydraulic fluid levels and inspect for leaks. Replace hydraulic filters according to the manufacturer's recommendations, typically every 500 hours.
Fuel System: Use high-quality diesel fuel and add a fuel conditioner, especially during cold weather, to prevent gelling and ensure proper fuel system operation. Check and replace fuel filters as needed.
Seasonal Storage: Before storing the tractor for extended periods, stabilize the fuel, change engine oil and filter, lubricate all grease fittings, and protect tires from direct sunlight to prevent dry rot.

History & Background

The John Deere 9420R was a key model in the R series lineup, introduced to meet the growing demand for high-horsepower, articulated tractors. While it didn't undergo major redesigns during its production run, it represented a significant technological advancement over previous models, offering improved engine performance and operator comfort. The 9420R played a significant role in enabling farmers to increase productivity and efficiency in large-scale agricultural operations.

Frequently Asked Questions

What engine is in the John Deere 9420R?

The John Deere 9420R is powered by a 12.5L John Deere PowerTech 6-cylinder diesel engine, producing approximately 425 horsepower.

What is the PTO horsepower on a 9420R?

The PTO horsepower on the John Deere 9420R is approximately 345 horsepower, available at 1000 RPM.

What oil filter fits the 9420R?

The recommended oil filter for the John Deere 9420R is John Deere part number RE504836. Common cross-references include Wix 57712 and Baldwin BD7317.

What are common parts needed for the 9420R?

Common wear parts for the 9420R include engine air filters, fuel filters, oil filters, hydraulic filters, fan belts, hydraulic cylinder seals, steering components (tie rod ends), and clutch parts (if equipped with a clutch).

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