John Deere 4640 Tractor Parts

4640 parts and accessories

The John Deere 4640 tractor, manufactured from 1977 to 1982, was a popular choice for farmers seeking a powerful and reliable workhorse. Powered by a robust 155 horsepower diesel engine, the 4640 delivered ample power for demanding tasks. Its efficient PTO system, offering both 540 and 1000 RPM options, made it versatile for a wide range of implements, cementing its reputation as a valuable asset on the farm.

The John Deere 4640 was introduced in 1977 as part of the 'Iron Horse' series, replacing the 4630. Production continued until 1982. This model was particularly well-regarded for its power and comfortable operator environment. The 4640 is powered by a John Deere 6.8L (414 cu in) six-cylinder diesel engine producing approximately 155 horsepower. The engine is naturally aspirated and known for its durability. Transmission options included a Quad-Range transmission with 16 forward and 6 reverse gears, or a PowrShift transmission with 8 forward and 4 reverse gears. PTO horsepower is rated at 135 HP, available at both 540 and 1000 RPM. The hydraulic system boasts a capacity of approximately 30 GPM, powering two or three remote valves. The 3-point hitch is a Category II/III, capable of lifting around 7,300 lbs. Common applications include row crop farming, hay production, livestock operations, and tillage. Distinguishing itself from smaller models in the lineup, the 4640 offered significantly more power and hydraulic capacity, making it suitable for heavier tasks and larger implements.

Specifications

Engine	John Deere 6.8L 155 HP Diesel
PTO HP	135 HP @ 540/1000 RPM
Transmission	Quad-Range (16F/6R) or PowrShift (8F/4R)
Hydraulics	30 GPM, 2-3 remotes
3-Point Hitch	Category II/III, 7300 lbs
Fuel Capacity	52 gallons
Weight	14,180 lbs
Years Produced	1977-1982

Maintenance Tips

Engine Oil & Filter: Change engine oil and filter every 250 hours of operation using the recommended John Deere oil and filter to maintain optimal engine performance.
Hydraulic System Maintenance: Regularly check hydraulic fluid levels and inspect for leaks. Replace hydraulic filters according to the manufacturer's recommendations to prevent contamination and ensure smooth operation.
Fuel System Care: Use clean, high-quality diesel fuel and replace fuel filters as scheduled to prevent fuel system issues. Consider adding a fuel stabilizer during seasonal storage.
Seasonal Storage: Before storing your 4640 for the off-season, drain fuel, add fuel stabilizer, lubricate all grease fittings, and disconnect the battery to prevent corrosion and ensure easy starting when you're ready to use it again.

History & Background

The John Deere 4640 was a key model in the John Deere lineup of the late 1970s and early 1980s. Replacing the 4630, it offered improvements in power and operator comfort. The 4640 solidified John Deere's position as a leader in agricultural machinery and remains a sought-after tractor for its reliability and performance.

Frequently Asked Questions

What engine is in the John Deere 4640?

The John Deere 4640 is equipped with a John Deere 6.8L (414 cubic inch) six-cylinder diesel engine, producing approximately 155 horsepower.

What is the PTO horsepower on a 4640?

The PTO horsepower rating on the John Deere 4640 is 135 horsepower, available at both 540 and 1000 RPM.

What oil filter fits the 4640?

The John Deere 4640 typically uses a John Deere AR51784 oil filter. Cross-references include Wix 51794 or Baldwin BT237.

What are common parts needed for the 4640?

Common parts needed for the John Deere 4640 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic seals, steering components (tie rod ends, power steering cylinders), and clutch parts (clutch disc, pressure plate).

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