John Deere 9120 Tractor Parts

9120 parts and accessories

The John Deere 9120 tractor, manufactured from 2002 to 2007, is a reliable workhorse in the field. Powered by a robust 9.0L John Deere diesel engine producing approximately 325 engine horsepower, the 9120 delivers ample power for demanding tasks. Its high PTO horsepower made it a favorite among farmers for powering implements like large planters, tillage equipment, and grain carts.

The John Deere 9120 was introduced as part of the 9020 series of four-wheel drive tractors, designed to meet the growing demands of modern farming operations. Production spanned from 2002 to 2007. At its heart lies a 9.0L (549 cubic inch) John Deere 6090H diesel engine, rated at approximately 325 horsepower. This engine provided the necessary torque for heavy draft work. The transmission is a 12-speed powershift, offering smooth and efficient gear changes. The PTO delivers approximately 270 horsepower, available in both 1000 RPM configuration. The hydraulic system boasts a flow rate of around 40 GPM, providing ample power for implements. It typically includes four remote hydraulic valves. The 9120 features a Category IV-N/III 3-point hitch with a lift capacity of around 11,842 lbs. Common applications include primary tillage, planting row crops, pulling grain carts, and handling large square balers. Compared to smaller models in the 9020 series, the 9120 offered increased horsepower and hydraulic capacity, making it suitable for larger farms and more demanding tasks. It stood out for its robust construction and dependable performance.

Specifications

Engine	John Deere 6090H 325 HP 9.0L Diesel
PTO HP	270 HP @ 1000 RPM
Transmission	Powershift 12-speed
Hydraulics	40 GPM, 4 remotes
3-Point Hitch	Category IV-N/III, 11,842 lbs
Fuel Capacity	210 gallons
Weight	30,970 lbs
Years Produced	2002-2007

Maintenance Tips

Engine Oil & Filter: Change the engine oil and filter every 250-300 hours using the recommended John Deere oil and filter. Regular changes prevent excessive wear.
Hydraulic System: Inspect hydraulic oil levels regularly and change the hydraulic filter every 500 hours. This prevents contamination and maintains hydraulic performance. Use Hy-Gard hydraulic fluid.
Fuel System: Use a fuel additive to prevent gelling in cold weather and to keep the fuel system clean. Replace fuel filters according to the manufacturer's recommendations.
Seasonal Storage: Before storing for the off-season, stabilize the fuel, change the engine oil, and grease all fittings. Disconnect the battery and store it in a cool, dry place.

History & Background

The John Deere 9120 was a key model in the 9020 series, introduced in 2002 to offer increased power and capabilities to farmers. There were no major redesigns during its production run. It played a significant role in the evolution of large-scale farming by providing a reliable platform for heavy tillage and planting operations.

Frequently Asked Questions

What engine is in the John Deere 9120?

The John Deere 9120 is powered by a 9.0L (549 cubic inch) John Deere 6090H diesel engine, producing approximately 325 horsepower.

What is the PTO horsepower on a 9120?

The PTO horsepower on the John Deere 9120 is approximately 270 horsepower, available at 1000 RPM.

What oil filter fits the 9120?

The John Deere oil filter part number for the 9120 is RE504836. Common cross-references include Fleetguard LF9009 and Wix 57712.

What are common parts needed for the 9120?

Common wear parts for the John Deere 9120 include engine oil filters (RE504836), fuel filters (RE509672), hydraulic filters (RE62419), air filters (RE58975), fan belts, hydraulic seals, steering cylinders, and clutch components.

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