John Deere 8440 Tractor Parts

8440 parts and accessories

The John Deere 8440, manufactured from 1979 to 1982, was a powerful four-wheel-drive tractor designed for demanding agricultural tasks. Powered by a robust 215 HP diesel engine, with a PTO horsepower of 175, the 8440 quickly became a favorite among farmers for its ability to handle heavy tillage and row crop operations. Its reliable performance and innovative design solidified its place in agricultural history.

The John Deere 8440 was introduced in 1979 as part of John Deere's expansion into the high-horsepower four-wheel-drive tractor market. Production continued through 1982. The 8440 features a John Deere 6-cylinder turbocharged diesel engine producing approximately 215 gross horsepower. The engine displacement is 466 cubic inches. This model features an 8-speed Quad-Range transmission, allowing for a wide range of working speeds. The PTO horsepower is rated at 175 HP with both 540 and 1000 RPM PTO options. Hydraulic capacity is rated at approximately 30 GPM, typically equipped with 2-3 remote valves. It features a Category III 3-point hitch. Common farming applications for the 8440 include primary tillage, secondary tillage, row crop planting, and haying operations. What distinguishes the 8440 from other models in the lineup is its four-wheel-drive configuration, its larger engine, and its robust hydraulic system, making it well-suited for heavy-duty field work compared to smaller two-wheel-drive models.

Specifications

Engine	John Deere 215 HP Diesel
PTO HP	175 HP @ 1000 RPM
Transmission	Quad-Range 8-Speed
Hydraulics	30 GPM, 2-3 remotes
3-Point Hitch	Category III, 6,700 lbs lift capacity
Fuel Capacity	152 gallons
Weight	20,100 lbs
Years Produced	1979-1982

Maintenance Tips

Engine Oil & Filter: Change the engine oil and filter every 250 hours using high-quality diesel engine oil meeting John Deere specifications. Regularly check the oil level and inspect for leaks.
Hydraulic System: Inspect hydraulic hoses and fittings for leaks or damage. Change the hydraulic fluid and filter every 1000 hours to maintain optimal performance and prevent component wear.
Fuel System: Use clean, high-quality diesel fuel. Regularly check and replace the fuel filter to prevent fuel system clogging and ensure efficient engine operation. Consider using a fuel additive during seasonal storage to prevent fuel degradation.
Seasonal Storage: Before storing the tractor for an extended period, drain the fuel tank or add a fuel stabilizer. Disconnect the battery and store it in a cool, dry place. Grease all lubrication points to prevent corrosion.

History & Background

Introduced in 1979, the John Deere 8440 represented a significant step in John Deere's four-wheel-drive tractor offerings. While it received no major updates during its production run, it established a strong reputation for power and reliability. The 8440 helped solidify John Deere's position as a leading manufacturer of high-horsepower agricultural tractors.

Frequently Asked Questions

What engine is in the John Deere 8440?

The John Deere 8440 is equipped with a 466 cubic inch (7.6L) 6-cylinder turbocharged diesel engine producing approximately 215 horsepower.

What is the PTO horsepower on a 8440?

The John Deere 8440 has a PTO horsepower rating of 175 HP. It features both 540 and 1000 RPM PTO options.

What oil filter fits the 8440?

The recommended oil filter for the John Deere 8440 is a John Deere AR50041. Cross-references include Wix 51794, Baldwin B243, and Fleetguard LF3349.

What are common parts needed for the 8440?

Common wear parts for the John Deere 8440 include engine oil filters, fuel filters, air filters, hydraulic filters, belts (alternator, fan), hydraulic cylinder seals, steering components (tie rod ends), clutch discs, and PTO clutch components.

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