Are you thinking of adding the John Deere 4840 to your equipment lineup? It can seem like a big investment and figuring out which model is suitable for you can be daunting.
That’s why we’re taking an in-depth look at this workhorse tractor today – to understand its features and capabilities and ask whether or not it’s worth investing in the John Deere 4840.
We’ll explore what sets this powerful two-wheel drive apart from similar makes and models on the market, allowing you to make an informed decision about your next purchase.
Stay tuned to learn more in this John Deere 4840 reviews about the key features of this row-crop tractor!
Take Away Key Points:
- The John Deere 4840 is a powerful row-crop tractor that offers operator comfort, reliability, and excellent performance on the field.
- The JD 4840 may not have an affordable price, but it is one of the best tractors of its line.
- The tractor is an excellent investment for those looking for a rugged and dependable machine.
Table of Contents
The History & Overview of John Deere 4840 Tractor
The John Deere 4840 row crop tractor was released as part of the Iron Horse line and produced between 1978 and 1982. It is a row-crop tractor with a maximum output power of 200.0 HP, allowing farmers to undertake large workloads effortlessly.
In addition, the tractor features an overhead valve 6-cylinder engine and a two-door sound gard cab, ensuring operator comfort. With dual remotes on the rear and a spacious hydraulic oil tank, this tractor is designed for the comfort and convenience of farmers. Thanks to its air conditioning and high visibility, farmers can easily work on sunny days.
The tractor also offers added protection against dust particles due to its rotary air pre-cleaner element, which increases engine life span and reduces downtime due to maintenance costs.
Overall, the John Deere 4840 tractor is an ideal investment for farmers looking for quality and reliable power from their tractors.
Key Specifications
- Model: John Deere 4840
- Wheelbase: 118.1 in
- Fuel tank capacity: 390.0 liters
- Battery: 2 x 6V
- Cabin type: Sound-Gard Cab
John Deere 4840 Engine
The tractor that powers the John Deere 4840 tractor is an engine custom-made by John Deere and offers the highest productivity levels with maximum efficiency. Its 7.6-liter engine oil capacity is spread out over six cylinders. Plus, the fuel tank holds over 100 gallons so that you can spend more time in the field without a refill brake.
Moreover, the John Deere engine utilizes an intercooled turbocharger to reach a maximum power output of 181 hp. This ensures that even the toughest jobs are made easier using the tractor with any heavy material, ensuring no slow down on rugged terrain.
The dual paper air filter not only removes dust or any other forms of debris but also reduces the tractor’s wear and tear by not letting it during unnecessary friction caused by particles in its intake.
Plus, the large cooling system can store up to 37.9 liters of water which keeps the tractor from overheating due to long extended usage periods during hot weather.
Thus, the John Deere 4840 tractor engine is designed very efficiently, allowing for a durable tractor performance with maximum power.
Engine Specs
| Engine type | Four-stroke, liquid-cooled, inline |
| Number of cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 466.0 cu·in |
| Cylinder bore and stroke | 4.57 in x 4.76 in |
| Compression ratio | 15.5:1 |
| Horsepower | 200.0 HP |
| Starter | Electric |
| Coolant capacity | 37.9 L |
| Aspiration | Turbocharged |
| Rated Engine Speed | 2200rpm |
| Idle Speed | 800-2400rpm |
| Firing Order | 1-5-3-6-2-4 |
| Fuel System | Direct injection |
| Air Cleaner | Dual dry element |
| Engine oil capacity | 19.9L |
John Deere 4840 Transmisssion
The PowerShift transmission of the John Deere 4840 row crop tractor is essential for powering its tractor wheels. This transmission provides 8 speeds going forwards and 4 speeds in reverse, which allows users to operate the tractor at speeds up to 29.9 kph (18.6 mph) moving forward and 10.3 kmh (6.4 mph) in reverse.
The John Deere tractor has differential hydraulic wet disc brakes that use hydraulic pressure. This means the brakes always work, even when the engine is off. This is helpful because it means you can stop quickly if you need to.
This powertrain is exceptionally beneficial for tractor owners because it gives them a lot of control over their tractor’s speed and torque settings, allowing them to adjust the tractor to whatever application or terrain they’re working on without having to stop and shift or change gears manually.
Moreover, its automatic power steering ensures that tractor operators can shift quickly between gears as needed with minimal effort and maximum convenience. This makes the John Deere 4840 tractor an optimal choice for anyone needing exceptional performance and easy operation.
Transmission Specs
| Chassis | 4×2 2WD |
| Steering type | Power shift transmission |
| Differential lock | Pedal-actuated hydraulic |
| Transmission model | John Deere PowerShift |
| Transmission type | Full power shift gears |
| Brakes | Differential hydraulic wet disc |
| Gears | 8 forward and 4 reverse |
| Speed Forward | 29.9 kmh Reverse: 10.3kmh |
| Transmission oil capacity | 75.7 L |
John Deere 4840 Hydraulic System
The John Deere 4840 row crop tractor is the perfect all-around tractor for farmers and agriculture workers, with its rugged design, powerful rear hitch, and reliable hydraulic system. The tractor’s Category 3 rear hitch has a safe lifting capacity of 8295 (3760), allowing it to handle heavier objects easily.
In addition to this impressive capability, the tractor is equipped with a power take-off that makes using attachments like plows and balers easy for users. This tractor combines tractor strength with power and efficiency through its hydraulic system, making it the ideal choice for any agricultural operation.
Hydraulics specs
| Hydraulic type | closed center |
| Hydraulic capacity | 62.5 L |
| Number of valves | 2 or 3 |
| Pump flow | 23.0 gpm |
| 3-Point Hitch Category | 3/3N |
John Deere 4840 Dimensions
The John Deere 4840 is an innovative tractor with impressive features, including its dimensions. With a total length of 178 inches, this tractor is a great option for transporting goods and other items over long distances; it can easily maneuver within tight spaces and take on more challenging terrain.
Additionally, its size allows for greater fuel efficiency compared to larger tractors in the same class, which can save farmers both time and money.
All in all, the dimensions of the John Deere 4840 tractor provide many benefits that will make any farmer’s work easier and more economical.
Dimensions Specs
| Length | 176.8 in |
| Height | 116.9 in |
| Width | 96 in 108 in (long axle) 118 in (long axle) |
| Ground Clearance | 14.9 in |
| Front Axle Clearance | 26 in |
| Rear Axle Clearance | 28 inches |
| Rear Axle: Rack-and-pinion | 3.937 by 96 inches |
| Rack-and-pinion | 3.937 by 108 inches 3.937 by 118 inches |
| Turning Radius | 162 in |
| Shipping Weight | 14900 lb |
| Operating Weight | 18000 lb |
| Ballasted Weight | 20370 |
Common Issues With the John Deere 4840
The John Deere Deere 4840 is definitely an impressive piece of machinery. However, like many pieces of equipment, it has its issues. First and foremost is the tractor’s propensity for frequent oil leaks; outdated seals often result in significant amounts of oil spilling onto the ground and around the tractor engine.
Those with first-hand experience operating this tractor have reported common problems, including hydraulic sanding, transmission troubles, and starter failures. Experienced tractor owners can often tackle many of these issues with some mechanical knowledge, but more severe problems may require a professional repair service.
Common issues include transmission difficulty due to worn-out shifter components and sluggish fuel delivery due to leaking fuel injectors. Keeping on top of these issues is vital to ensure that your tractor runs optimally and saves on expensive repair costs down the line.
FAQs
What horsepower is a 4840 John Deere?
The John Deere 4840 has a powerful 6-cylinder diesel engine that delivers 180 HP of maximum output power.
Is a John Deere 4840 a good tractor?
The John Deere 4840 tractor is well respected in the farm and agricultural machinery industry, but it is not without its issues. The tractor often experiences problems with hydraulics and oil spillings.
What years did John Deere make the 4840?
The John Deere 4840 was produced between 1978 and 1982.
John Deere 4840 vs. 4640: Who wins?
Both John Deere tractor models are powerful, but if you are looking for more horsepower delivery, the 4840 is the better choice.
What’s the problem with the John Deere 4840 tractor?
The John Deere 4840 tractor is a reliable machine, but with any tractor, there can be problems.
Common issues experienced with the John Deere 4840 tractor include power loss, starting difficulties, broken or worn-out belts and hoses, and failure to shift gears properly.
