John Deere 4020 Tractor Parts

4020 parts and accessories

The John Deere 4020, manufactured from 1964 to 1972, became a staple on American farms. Powered by a robust diesel engine producing around 95 horsepower, this tractor delivered substantial power for its time. Its dependable performance and approximately 84 PTO horsepower made it a favorite for various farming tasks, contributing significantly to increased agricultural productivity.

The John Deere 4020 was introduced in 1964 as part of the "New Generation" tractors, replacing the popular 4010. Production continued until 1972. The 4020 was powered by a John Deere 404 cubic inch diesel engine, producing approximately 95 engine horsepower. A gasoline version was also available with similar specifications. Transmission options included a SyncroRange transmission with 8 forward and 2 reverse gears, or a Power Shift transmission with 8 forward and 4 reverse gears. The PTO horsepower was rated at approximately 84 hp, with a standard 540 RPM PTO. The hydraulic system delivered around 25 GPM to power implements. It featured a Category II 3-point hitch. The 4020 was widely used for row crop farming, hay production, livestock operations, and various tillage tasks. Distinguishing itself from other models, the 4020 offered a balanced combination of power, reliability, and versatility, appealing to a wide range of farming operations.

Specifications

Engine	John Deere 404 cu in (6.6 L) Diesel 95 HP
PTO HP	84 HP @ 540 RPM
Transmission	SyncroRange (8F/2R) or Power Shift (8F/4R)
Hydraulics	25 GPM, 2 remotes
3-Point Hitch	Category II, 4,200 lbs lift capacity
Fuel Capacity	30 gallons
Weight	8,000 lbs
Years Produced	1964-1972

Maintenance Tips

Engine Oil & Filter: Change engine oil and filter every 250 hours of operation using a high-quality oil meeting John Deere specifications.
Hydraulic System: Inspect hydraulic fluid levels regularly and change hydraulic filters every 500 hours. Use only John Deere Hy-Gard or equivalent hydraulic fluid.
Fuel System: Use clean, high-quality diesel fuel and replace fuel filters annually or every 250 hours, especially before seasonal storage.
Seasonal Storage: Before storing the tractor for extended periods, drain the fuel tank, add fuel stabilizer, and lubricate all grease fittings to prevent corrosion.

History & Background

The John Deere 4020 was a pivotal model in John Deere's history, representing a significant advancement in tractor technology. Introduced as part of the New Generation series, it featured improved ergonomics, more powerful engines, and advanced transmission options compared to its predecessors. The 4020 became one of the most popular and influential tractors ever produced, shaping the landscape of modern agriculture.

Frequently Asked Questions

What engine is in the John Deere 4020?

The John Deere 4020 primarily used a John Deere 404 cubic inch diesel engine, producing approximately 95 horsepower. A gasoline version was also available.

What is the PTO horsepower on a 4020?

The PTO horsepower on a John Deere 4020 is approximately 84 horsepower at 540 RPM.

What oil filter fits the 4020?

A common oil filter for the John Deere 4020 is a John Deere AR50041 or equivalent. Cross-references include Wix 51794 and Fram PH3756.

What are common parts needed for the 4020?

Common parts needed for the John Deere 4020 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic cylinder seal kits, steering linkage components, and clutch disc/pressure plate components.

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