| John Deere 4840 Technical Specs | |
|---|---|
| Manufacturer | John Deere |
| Production | 1978 – 1982 |
| Engine | John Deere 7.6L 6-cyl diesel |
| Transmission | 8-speed full power shift |
| Drawbar (claimed) | 157 hp (117.1 kW) |
| PTO (claimed) | 180 hp (134.2 kW) |
| Drawbar (tested) | 151.21 hp (112.8 kW) |
| PTO (tested) | 180.63 hp (134.7 kW) |
| Fuel Capacity | 103 gal (389.9 L) |
| Hydraulic System Capacity | 16.5 gal (62.5 L) |
| Hydraulics Type | closed center |
| Hydraulics Capacity | 16.5 gal (62.5 L) |
| Hydraulics Valves | 2 or 3 |
| Hydraulics Pump Flow | 23 gpm (87.1 lpm) |
| Tractor Hitch Rear Type | III/IIIN |
| Rear Lift | 8295 lbs (3762 kg) |
| Rear PTO | independent |
| Rear RPM | 1000 (1.75) |
| Wheelbase | 118.5 inches (300 cm) |
| Weight | 14900 to 18000 pounds |
| Front Tire | 11.00-16 |
| Rear Tire | 18.4-38 |
What is the production period of the John Deere 4840?
The John Deere 4840 was produced from 1978 to 1982.
Where was the John Deere 4840 built?
The tractor was built in Waterloo, Iowa, USA.
What is the engine specification of the John Deere 4840?
The John Deere 4840 is powered by a 7.6L 6-cylinder diesel engine.
What type of transmission does the John Deere 4840 have?
The tractor features an 8-speed full power shift transmission.
What is the fuel capacity of the John Deere 4840?
The fuel capacity is 103 gallons (389.9 L).
How about the hydraulic system of the John Deere 4840?
The hydraulic system has a capacity of 16.5 gallons (62.5 L) and operates on a closed center type system with 2 or 3 valves. The pump flow is 23 gpm (87.1 lpm).
What are the dimensions and weight of the John Deere 4840?
The tractor has a wheelbase of 118.5 inches (300 cm) and weighs between 14900 to 18000 pounds.
Where can I find the serial number of the John Deere 4840?
The serial number plate is located on the rear of the 4840, above the PTO shaft.
What is the electrical system of the John Deere 4840?
The tractor uses a negative ground electrical system with an alternator charging system. It has 2 batteries with 6 volts each.
How can I read the serial number table for the John Deere 4840?
There is a specific guide on how to read the serial number table provided on the website.
The John Deere 4840 is a row-crop tractor manufactured by John Deere. Produced between 1978 and 1982, this model is part of the Iron Horses Series and was built in Waterloo, Iowa, USA.
Key Specifications: The tractor is powered by a John Deere 7.6L 6-cylinder diesel engine. It features an 8-speed full power shift transmission. The weight of the tractor ranges between 14,900 to 18,000 pounds. The wheelbase measures 118.5 inches.
Performance: With a drawbar claimed power of 157 hp and a PTO claimed power of 180 hp, the John Deere 4840 offers robust performance suitable for various farming tasks. The 8-speed transmission ensures smooth shifting and optimal speed variations.
Features: Notable features of the John Deere 4840 include a closed center hydraulic system, differential hydraulic wet disc brakes, and a Sound-Gard cab for enhanced comfort. The tractor also boasts a differential lock that is pedal-actuated hydraulic and power steering for better control.
Reliability: John Deere is known for producing reliable machinery, and the 4840 is no exception. While every machine might have occasional issues, the 4840’s robust build and quality engineering ensure longevity and fewer maintenance concerns.
Value for Money: With an original price of $57,648 in 1982, the John Deere 4840 offers a range of features and powerful performance, making it competitive when compared to similar models in the market.
Pros and Cons:
Pros:
- Powerful 6-cylinder diesel engine
- 8-speed full power shift transmission
- Sound-Gard cab for enhanced comfort
- Reliable performance and build quality
Cons:
- May be considered pricey for some farmers
- Older model, so might lack some of the latest technological advancements
Best Suited For: The John Deere 4840 is best suited for row-crop farming. Its powerful engine and transmission make it ideal for tasks that require consistent power. The tractor can handle various terrains, making it versatile for different farming conditions.
The John Deere 4840 is a reliable and powerful tractor that offers a range of features suitable for row-crop farming. While it might come at a premium price, its performance, build quality, and brand reputation make it a worthy investment for farmers looking for a durable and efficient tractor.