| Manufacturer | John Deere |
| Price | 52,000(USD) |
| Model | 7400 |
| Equipment Type | Row-Crop Tractors |
| Factory | Waterloo, Iowa, USA |
OCED TRACTOR TEST 1680 2
| Description | Diesel SynchroPlus 4WD May 23 - June 2, 1994 Link: OCED Tractor Test 1680 file PTO performance Drawbar performance |
| Max power | 90.35hp / 67.4kW |
| Fuel use | 5.9gal/hour / 22.3l/hour |
| Power at rated engine speed | 102.14hp / 76.2kW |
| Max pull | 12,739lbs / 5778kg |
OCED TRACTOR TEST 1681 2
| Description | Diesel PowrQuad 4WD May 12 - June 2, 1994 Link: OCED Tractor Test 1681 file PTO performance Drawbar performance |
| Max power | 91.22hp / 68.0kW |
| Fuel use | 6.0gal/hour / 22.7l/hour |
| Power at rated engine speed | 102.05hp / 76.1kW |
| Max pull | 12,958lbs / 5877kg |
JOHN DEERE 7400 POWER
| PTO (claimed) | 100hp / 74.6kW |
| Drawbar (tested) | 91.22hp / 68.0kW |
| PTO (tested) | 107.24hp / 80.0kW |
ENGINE DETAIL
The John Deere 7400 features a robust 6.8L turbocharged diesel engine with a high compression ratio of 17.8:1, which enhances fuel efficiency and power output at a rated RPM of 2100, making it suitable for heavy-duty agricultural tasks. Its firing order of 1-5-3-6-2-4 contributes to smooth engine operation, reducing vibration and improving longevity. However, the system's complexity may pose challenges in parts access and maintenance, requiring specialized knowledge for optimal upkeep.
| Description | John Deere 6068 turbocharged diesel 6-cylinder liquid-cooled |
| Displacement | 414ci / 6.8L |
| Bore/Stroke | 4.19x5.00inches / 106x 127mm |
| Compression | 17.8:1 |
| Rated RPM | 2100 |
| Firing order | 1-5-3-6-2-4 |
| Starter volts | 12 |
JOHN DEERE 7400 ENGINE
The John Deere 7400 features a robust 6.8L 6-cylinder diesel engine, providing excellent torque and fuel efficiency, making it suitable for heavy-duty applications. With a 54-gallon (204.4L) fuel tank, it offers an extended operating range, advantageous for long tasks without frequent refueling stops. However, operators should be aware of the tractor's weight and size, which may present challenges in maneuverability in tighter spaces.
| Description | John Deere 6.8L 6-cyl diesel |
| Fuel tank | 54gal / 204.4L |
TRANSMISSIONS OVERVIEW
The John Deere 7400 tractor features a 12-speed fully synchronized transmission, enhancing precision in speed control and reducing operator fatigue. The inclusion of a 16-speed four-speed power shift option offers versatility for various field conditions, allowing seamless gear transitions. However, operators may face a learning curve in mastering the complex shifting patterns, particularly when operating in challenging terrains.
| Description | 12-speed fully synchronized 16-speed four-speed power shift |
TRANSMISSION 1
The John Deere 7400's SyncroPlus transmission offers a fully synchronized 12 forward and 4 reverse gear setup, facilitating smooth gear shifts under load. The hydraulic wet disc clutch enhances durability and provides seamless engagement, which can improve operational efficiency but may require more maintenance. Optimal for applications needing versatility in speed and direction, this transmission is ideal for varied tasks such as tilling or hauling.
| Transmission | SyncroPlus |
| Type | fully synchronized |
| Gears | 12 forward and 4 reverse |
| Clutch | hydraulic wet disc |
| Description | Optional transmission. Three gears, plus reverse, in three ranges |
TRANSMISSION 2
The John Deere 7400 features a PowrQuad transmission, providing a robust four-speed power shift system with 16 forward and 12 reverse gears, enhancing operational flexibility. The hydraulic wet disc clutch ensures smooth gear transitions, ideal for tasks that require both precision and efficiency. However, increased complexity in the transmission may pose maintenance challenges; regular upkeep is crucial to optimize performance in varied agricultural scenarios.
| Transmission | PowrQuad |
| Type | four-speed power shift |
| Gears | 16 forward and 12 reverse |
| Clutch | hydraulic wet disc |
| Description | Standard transmission. Four gears (1-4) in four ratios (A-D) |
MECHANICAL
The John Deere 7400 features a robust 4x4 MFWD option, enhancing traction and stability in various terrains. Its independent hydraulic wet disc brakes provide effective stopping power, making it suitable for heavy-duty applications. Coupled with a 12-speed fully synchronized transmission, it offers smooth gear shifts, facilitating efficient operation in both fieldwork and transport scenarios.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Steering | power |
| Brakes | independent hydraulic wet disc |
| Cab | Cab standard with air-conditioning |
| Transmissions | 12-speed fully synchronized 16-speed four-speed power shift |
HYDRAULICS
| Type | closed center |
| Valves | 2 or 3 |
TRACTOR HITCH
| Rear Type | 2/3N |
| Rear lift (at 24 | 6,858lbs / 3110kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 540/1000 |
JOHN DEERE 7400 TIRES
The John Deere 7400 tractor features an agricultural front tire size of 10.00-16 and a rear tire size of 18.4-38, which provides a solid balance between traction and stability on various terrains. The larger rear tires enhance flotation and reduce soil compaction, making it suitable for fieldwork and crop production. However, the weight distribution and tire dimensions may pose challenges in tight spaces or steep slopes, requiring careful maneuvering.
| Ag front | 10.00-16 |
| Ag rear | 18.4-38 |
DIMENSIONS
| Wheelbase | 112.1inches / 284cm |
| Operating weight | 12,666lbs / 5745kg (SyncroPlus) 12,738lbs / 5777kg (Power Quad) |
DIMENSIONS & TIRES
The John Deere 7400 tractor features a wheelbase of 112.1 inches, providing stability during operation, especially when navigating uneven terrain. With a weight range between 12,666 and 12,738 pounds, it offers substantial traction for heavy-duty applications but may pose challenges in transportability. The front tire size of 10.00-16 and rear tire size of 18.4-38 contribute to effective load distribution and field efficiency, making it suitable for tasks like plowing and planting in medium to large-scale farming scenarios.
| Wheelbase | 112.1inches / 284cm |
| Weight | 12666 to 12738 pounds |
| Front tire | 10.00-16 |
| Rear tire | 18.4-38 |
7400 SERIAL NUMBERS
| 1994 | 1001 |
| 1995 | 2995 |
| 1996 | 6001 |
ELECTRICAL
| Ground | negative |
| Battery volts | 12 |