John Deere 9420T Tractor Parts

9420T parts and accessories

The John Deere 9420T, manufactured from 2003 to 2006, is a powerful track tractor designed for demanding agricultural applications. Equipped with a robust 425 HP John Deere diesel engine, this tractor delivers exceptional pulling power with a PTO horsepower rating suited for large implements. Its reliable performance and ability to handle heavy tillage made it a popular choice among farmers seeking maximum productivity.

The John Deere 9420T crawler tractor was introduced in 2003 as part of the 9020 series, representing a significant step in high-horsepower track tractors. Production continued until 2006. Powering the 9420T is a 12.5L (764 ci) John Deere 6125HR45 diesel engine, rated at 425 horsepower. This engine provides ample torque and reliability for challenging field conditions. It features a 24-speed powershift transmission, providing smooth gear changes and optimal speed selection for various tasks. The PTO delivers approximately 365 horsepower at 1000 RPM. The hydraulic system offers a flow rate of 45 GPM and supports multiple remote outlets for operating hydraulically driven implements. While not equipped with a standard 3-point hitch, it can be equipped with a category IV 3-point hitch with a lift capacity around 18,000 lbs. Common applications include primary tillage (plowing, disking), large-scale planting, and heavy row-crop work. Compared to wheeled tractors in the 9020 series, the 9420T offers improved traction and reduced soil compaction due to its track system.

Specifications

Engine	John Deere 6125HR45 425 HP Diesel
PTO HP	365 HP @ 1000 RPM
Transmission	Powershift 24-speed
Hydraulics	45 GPM, 4-6 remotes
3-Point Hitch	Category IV, 18,000 lbs
Fuel Capacity	200 gallons
Weight	44,000 lbs
Years Produced	2003-2006

Maintenance Tips

Engine Oil & Filter: Change engine oil and filter every 250-300 hours using the recommended John Deere oil and filter specification. Regularly check oil levels and look for any signs of contamination.
Hydraulic System: Inspect hydraulic fluid levels and check for leaks regularly. Change hydraulic filters according to the manufacturer's recommendations (typically every 500 hours) to prevent contamination and ensure optimal hydraulic performance.
Fuel System: Use clean, high-quality diesel fuel and regularly inspect the fuel filter. Drain the water separator to prevent water from entering the fuel system, especially during seasonal storage.
Seasonal Storage: Before storing the tractor for an extended period, stabilize the fuel with a fuel stabilizer, lubricate all grease fittings, and protect the tractor from the elements to prevent rust and corrosion.

History & Background

The John Deere 9420T was launched in 2003, expanding John Deere's track tractor offerings in the high-horsepower segment. It was part of the 9020 series, offering a crawler alternative to the wheeled models. Its robust design and powerful engine contributed to its success in large-acreage farming operations.

Frequently Asked Questions

What engine is in the John Deere 9420T?

The John Deere 9420T is powered by a 12.5L (764 ci) John Deere 6125HR45 diesel engine, producing 425 horsepower.

What is the PTO horsepower on a 9420T?

The PTO horsepower on the John Deere 9420T is approximately 365 HP, available at 1000 RPM.

What oil filter fits the 9420T?

The recommended oil filter for the John Deere 9420T is typically a John Deere filter part number RE504836. Cross-references include Baldwin BD7151, Fleetguard LF9009 and Wix 57712.

What are common parts needed for the 9420T?

Common parts needed for the John Deere 9420T include engine oil filters, fuel filters, hydraulic filters, air filters, belts, hydraulic cylinder seal kits, steering components (tie rod ends, ball joints), and powershift transmission clutch components.

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