John Deere 4240 Tractor Parts

4240 parts and accessories

The John Deere 4240, manufactured from 1978 to 1982, was a workhorse of the late 70s and early 80s. Powered by a robust 86-horsepower diesel engine, the 4240 delivered approximately 75 PTO horsepower, making it ideal for a wide range of farming tasks. Farmers appreciated its reliability, versatility, and comfortable operator station, contributing to its widespread adoption.

The John Deere 4240 was introduced in 1978 as part of the "Iron Horse" series, replacing the 4230. Production continued until 1982. Under the hood, it features a John Deere 6.6L (404 cu in) 6-cylinder diesel engine, delivering a rated 86 engine horsepower. The transmission options included a Quad-Range transmission with 16 forward and 6 reverse speeds, providing excellent speed control for various field conditions. The independent PTO delivers around 75 horsepower, available in both 540 and 1000 RPM configurations. The hydraulic system boasts a capacity of approximately 28 GPM, powering up to two remote hydraulic valves. It features a Category II 3-point hitch with a lift capacity of around 6,000 lbs. Common applications included row crop cultivation, hay baling, livestock feeding, and light tillage. The 4240 stood out for its improved cab comfort and updated styling compared to its predecessors, offering a blend of power and operator convenience.

Specifications

Engine	John Deere 6.6L Diesel, 86 HP
PTO HP	75 HP @ 540/1000 RPM
Transmission	Quad-Range, 16F/6R
Hydraulics	28 GPM, 2 remotes
3-Point Hitch	Category II, 6000 lbs
Fuel Capacity	45 gallons
Weight	11,100 lbs
Years Produced	1978-1982

Maintenance Tips

Change engine oil and filter every 250 hours of operation using the recommended oil type and filter.
Inspect and maintain hydraulic fluid levels and filters regularly to prevent contamination and ensure optimal performance. Change hydraulic filters per manufacturer recommendation.
Check and clean the fuel system, including filters and sediment bowl, to prevent fuel starvation and maintain engine efficiency.
Before seasonal storage, drain fuel, add fuel stabilizer, and properly grease all fittings to protect against corrosion and component wear.

History & Background

The John Deere 4240 was part of the "Iron Horse" series, introduced in 1978. It replaced the 4230 model and offered improved features and comfort. This model became a popular and reliable tractor for many farmers during its production run.

Frequently Asked Questions

What engine is in the John Deere 4240?

The John Deere 4240 is equipped with a John Deere 6.6L (404 cubic inch) 6-cylinder diesel engine producing 86 horsepower.

What is the PTO horsepower on a 4240?

The John Deere 4240 has a PTO horsepower rating of approximately 75 HP. It offered both 540 and 1000 RPM PTO speed options.

What oil filter fits the 4240?

Common oil filter cross-references for the John Deere 4240 include John Deere part number AR51773, or equivalents from brands like Wix (51791) and Fram (PH3756). Always verify the correct filter for your specific engine serial number.

What are common parts needed for the 4240?

Common wear parts for the John Deere 4240 include engine oil filters, fuel filters, air filters, hydraulic filters, fan belts, hydraulic cylinder seals, steering components (tie rod ends, ball joints), and clutch components.

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