John Deere 4640 Reviews: The Best Row-crop Tractor for Efficient Results

If you’re on the search for a versatile tractor that’s reliable year-round, look no further than the John Deere 4640 reviews.

This workhorse of a machine is sure to meet all your farming and agricultural needs with its powerful performance features and long-lasting durability. Whether tilling your land or distributing fertilizer throughout a field, the John Deere 4640 has plenty of power to get any job done.

This blog post will review some of this popular tractor’s key specs, so you can decide if it’s suitable for your operation. Read on to discover why farmers everywhere are turning towards this dependable machinery!

Key Notes:

  • The John Deere 4640 tractor is a row-crop vehicle with a mighty diesel engine.
  • The machine is powerful and is equipped with one of the two transmission options.
  • The robust JD 4640 tractors are putting competitors to the test by delivering one of the most reliable row-crop machines for various agricultural tasks.

The History of John Deere 4640 Tractor

4640 john deere reviews

The JD 4640 is one of the most successful models in John Deere’s history. It was first introduced to the market in 1978 as John Deere’s largest row-crop tractor. The tractor was manufactured in Waterloo, Iowa, USA, until 1982.

It was the successor to the John Deere 4020, a successful two-wheel drive tractor that was a staple of John Deere’s line for over 15 years.

John Deere made numerous improvements in the 4640 version of their tractors, including more powerful engines, higher fuel efficiency, and a larger operator cab.

John Deere also added their popular Quad-Range transmission to the 4640, making it one of the most sought-after models in John Deere’s history.

Key Specifications

TypeRow-Crop tractor
Length170.9 in
Width95.7 in
Height116.9 in
Weight15,700 lbs
Fuel tank capacity314.2 liters
Battery6V x 2
Cabin typeSound-Gard cab

John Deere 4640: Engine

The John Deere 4640 tractor has a 7.6-liter six-cylinder John Deere diesel engine. This powerful engine features liquid-cooled, inline cylinders to ensure efficient fuel use and reduce emissions.

The row-crop tractor includes 4.57 in the cylinder bore and 4.76 in the piston stroke. Overall, the powerful engine produces 115.5 HP of PTO power output.

John Deere 4640 Engine Specs

Engine typeFour-stroke, turbocharged liquid-cooled, inline
Number of cylinders6
Fuel typeDiesel
Displacement466.0 cu·in
Bore and stroke4.57 in x 4.76 in
Compression ratio15.5:1
Horsepower155.0 HP
Oil capacity18.9 L
Coolant capacity36.0 L
Rated RPM2200
Idle RPM800-2400
Operating RPM1500-2200

John Deere 4640: Transmission

John Deere 4640 tractor is equipped with John Deere’s highly reliable Quad-Range and PowerShift transmissions, making it an ideal choice for farmers who require a great deal of power.

The John Deere Quad-Range transmissions are a partial power shift system that offers sixteen forward and six reverse gears with a top speed of 31.5 kmh. For those who require greater agility, John Deere’s Power Shift transmission offers eight forward and four reverse gears with a top speed of 31.4 kmh.

The John Deere 4640 tractor also has a hydrostatic power steering system that allows the operator to make quick, precise turns without sacrificing speed or power. In addition, it features differential hydraulic wet disc brakes that give the operator maximum control over the tractor.

Additionally, the hydraulic system holds up to 62.5 L of hydraulic fluid.

John Deere 4640 Transmission Specs

Chassis4×2 2WD or 4×4 MFWD 4WD
Differential lockPedal-actuated hydraulic
Steering typeHydrostatic power
Type of brakesDifferential hydraulic wet disc brakes

Transmission model: John Deere Quad-Range

Transmission typePartial power shift
Gears16 forward; 6 reverse
SpeedForward: 31.5 kmh; Reverse: 20.3 kmh

Transmission model: John Deere PowerShift

Transmission typeFull power shift
Gears8 forward; 4 reverse
SpeedForward: 31.4 kmh; Reverse: 10.8 kmh

John Deere 4640: Hydraulics

john deere 4640 vs 4840

The hydraulic system was one of John Deere’s most significant improvements with the 4640.

The John Deere 4640 has a closed-center hydraulics system, allowing a greater flow rate of 23 gpm. This high flow rate makes the John Deere 4640 ideal for users who need to move large loads quickly and efficiently.

In addition, the hydraulic system features two to three valves, giving users more flexibility when controlling their equipment.

Lastly, the John Deere 4640 also has a powerful pump that delivers up to 62.5 L of hydraulic fluid per minute. All these features combine to make the John Deere 4640 one of the market’s most efficient and flexible tractors today.

John Deere 4640 Hydraulics Specs

Hydraulic typeClosed center
Hydraulic capacity62.5 L
Number of valve2 to 3
Pump flow23.0 gpm

John Deere 4640 PTO & Attachments

The John Deere 168 Loader is designed to be compatible with the John Deere 4640 tractor. This loader offers farmers a reliable and efficient tool to help them with various tasks on their farm, such as loading and unloading materials, moving objects from one area to another, and digging trenches for irrigation.

The John Deere 168 Loader can also be used for other tasks, such as loading hay bales or transporting tools.

The John Deere 168 Loader is an incredibly versatile piece of equipment and a great addition to any John Deere 4640 tractor. Its impressive lift capacity and wide range of features will make any job easier.

The JD tractors are also excellent for pulling tasks as they have enough power to handle heavier loads.

The John Deere 4640 tractor is equipped with a category III/IIIN adjustable drawbar to deliver optimal performance and versatility.

In addition, the rear hitch of the John Deere 4640 can handle up to 7328 lbs of load, making it an ideal choice for farmers who need to move large amounts of material from point A to point B.

Tractor Hitch Specs

Rear lift capacity7328 lbs

PTO Specs

PTO (claimed)155 hp
Drawbar (tested)132.44 hp
PTO (tested)156.30 hp
Rear PTOIndependent
Rear RPM1000

John Deere 4640 Attachments Specs

John Deere 168 Loader

Loader weight1871 lbs
Height (to pin)151 inches
Rollback angle12°
Clearance, dumped bucket132 inches
Dump reach32 inches
Dump angle37°
Clearance, level bucket151 inches
Breakout force5000 lbs
Lift to full height3800 lbs
Bucket capacity0.9 cu m; 0.7 cu m
Bucket width96 inches

John Deere 4640 Dimensions

The John Deere 4640 tractor is a powerful and reliable row-crop tractor designed to make daily farming tasks easier. At 171 inches in length, 96 inches in width, and 117 inches in height (cab), the John Deere 4640 has an ergonomic design that allows for easy access and maneuverability.

Dimensions Specs

Wheelbase118.5 inches
Length171 inches
Width96 inches
Long Axle108 inches
Long Axle118 inches
Height (cab)117 inches
Ground clearance14.9 inches
Clearance26 inches
Clearance rear axle28 inches
Rear axle3.937 by 96 inches
Rack-and-pinion3.937 by 108 inches
Rack-and-pinion3.937 by 118 inches
Front tread58 to 100 inches
Rear tread60 to 131.5 inches

Common Issues With The John Deere 4640 Tractor

1. Hydraulic troubleshoot

One of the common issues that John Deere 4640 tractor owners experience is that the hydraulics system may become unreliable over time.

The John Deere 4640 has a closed-center hydraulics system, which can be prone to problems such as leaking hydraulic fluid or sticking valves.

Users of this tractor need to have it serviced regularly to check for any issues that may be developing.

2. Faulty PTO

how much horsepower does a john deere 4640 have

Another issue with the John Deere 4640 is that its PTO system can become less effective over time.

If the John Deere 4640’s PTO system isn’t working correctly, it can cause a decrease in efficiency and performance. This is why John Deere 4640 owners must have their PTO system serviced periodically.

3. Rear hitch

The JD 4640 has a rear hitch that can be difficult to use if not properly maintained. In addition, the JD 4640 uses an adjustable drawbar, and users need to ensure that it is adjusted correctly before using it, as improper adjustment can lead to inefficient operation.

It’s also crucial for John Deere 4640 users to regularly inspect the rear hitch for signs of wear or damage, as this can prevent problems from arising in the future.

Moreover, John Deere 4640 owners may experience various issues with the tractor that can reduce its efficiency and performance.

Including the rear axle bearings being out of spec, leaking head gasket, and bad front casting where front end pivots due to improper greasing.

4. Rear-Axle bearings

The John Deere 4640’s rear axle bearings are essential components of the tractor’s drive system. They help provide efficient power transfer from the tractor’s engine to the rear wheels.

If these bearings become worn or out of spec, the John Deere 4640 may experience reduced power transfer efficiency and other problems, such as unusual vibrations during operation.

5. Head gasket

The John Deere 4640 also has a head gasket that can become damaged over time and lead to fluid leakage.

The head gasket seals the area between the cylinder block and cylinder head to keep oil, coolant, and combustion gases from escaping into other engine areas.

If this gasket becomes damaged or leaks, it can cause decreased engine performance and an increased risk of overheating or further damage to the engine components.

6. Improper greasing

Finally, when it comes to John Deere 4640 maintenance, one issue that is often overlooked is the proper greasing of the front-end pivots on which the steering wheel is mounted.

Suppose these are not adequately lubricated with grease every few months, depending on use frequency. In that case, eventually, they will wear down faster than expected.

That is because metal-on-metal wear increases friction levels in these joints leading to more heat generated than usual.

The heat can cause fatigue fractures in this part over time leading to the potential failure of this portion of the John Deer46e 40’s steering system.

Overall, the John Deere 4640 tractor is a handy machine, and its efficiency and flexibility make it one of the market’s finest choices that every owner is proud of.

Is John Deere 4640 Worth the Money?

The John Deere 4640 tractor is one of the most reliable and valuable tractors available today. When it comes to price, the John Deere 4640 tractor is undoubtedly worth investing in for those looking for a powerful and dependable machine for their agricultural needs.

The John Deere 4640 tractor currently sells for around $24,000 – $60,000, depending on its condition and any optional extras you may require. This price tag makes it an expensive piece of machinery that requires careful consideration before investing in one

However, despite being an expensive purchase, it has proven to be an excellent investment over time due to its superior performance and longevity. The John Deere 4640 can last up to twenty years with proper maintenance and care, making it a long-term value that will ultimately pay off.

Overall, the JD 4640 is a good tractor and a top investment if you’re looking for a powerful and reliable farm machine that will last you many years into the future with proper maintenance and care. You will not waste money on this vehicle or make a wrong purchase!

The tractor brand has been providing farmers with quality machines since 1837, so you can rest assured knowing that your purchase will provide value well into the future and resale value should you ever need to sell your John Deere at some point down the line.


John Deere is one of the most reliable tractor brands on the market, and their John Deere 4640 model is no exception.

This tractor has been carefully designed with your farming needs in mind, and it comes packed with features that make it an incredibly useful machine for any agricultural task you may need it to complete.

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Ben Bareja

Ben Bareja, the owner-founder-webmaster of This website was conceptualized primarily to serve as an e-library for reference purposes on the principles and practices in crop science, including basic botany. Read more here

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