| Manufacturer | John Deere |
| Price | - |
| Model | 6425 |
| Equipment Type | Utility Tractors |
| Factory | Mannheim, Baden-Württemberg, Germany |
JOHN DEERE 6425 POWER
| Engine (gross) | 114hp / 85.0kW |
| Engine (net) | 110hp / 82.0kW |
| Engine (max) | 120hp / 89.5kW |
| PTO (claimed) | 98hp / 73.1kW |
ENGINE DETAIL
The John Deere 6425 tractor is powered by a robust 4.5L turbocharged diesel engine with a notable torque output of 352 lb-ft at 1600 RPM, providing efficient performance for heavier agricultural tasks. Its electronic fuel injection system enhances fuel efficiency and engine responsiveness, while the viscous fan cooling system ensures optimal operating temperatures under varying conditions. The Stage III emissions rating indicates compliance with stricter environmental standards, making this tractor suitable for users focused on sustainable farming practices.
| Description | John Deere 4045HL turbocharged intercooled diesel 4-cylinder liquid-cooled |
| Displacement | 276ci / 4.5L |
| Bore/Stroke | 4.19x5.00inches / 106x 127mm |
| Emissions | Stage III |
| Rated Power (ECE R24) | 110hp / 82.0kW |
| Rated Power (EC 97/98) | 114hp / 85.0kW |
| Maximum Power (ECE R24) | 115hp / 85.8kW |
| Maximum Power (EC 97/68) | 120hp / 89.5kW |
| Fuel system | electronic fuel injection |
| Cooling system | viscous fan |
| Rated RPM | 2300 |
| Idle RPM | 850-2460 |
| Operating RPM | 1500-2300 |
| Torque | 352lb-ft / 477.3Nm |
| Torque RPM | 1600 |
| Firing order | 1-3-4-2 |
| Starter | electric |
| Starter volts | 12 |
| Oil capacity | 16.9qts / 16.0L |
| Coolant capacity | 28qts / 26.5L |
JOHN DEERE 6425 ENGINE
The John Deere 6425 features a robust 4.5L 4-cylinder diesel engine, optimizing torque delivery and fuel efficiency for various agricultural tasks. Its 43.6-gallon fuel tank provides extended operating time, reducing the frequency of refueling during long workdays. However, operators should consider the tractor's weight and dimensions when maneuvering in tight spaces, as this may limit agility compared to smaller models.
| Description | John Deere 4.5L 4-cyl diesel |
| Fuel tank | 43.6gal / 165.0L |
TRANSMISSIONS OVERVIEW
The John Deere 6425 features a 12-speed synchronized transmission, providing smooth shifting and efficient power transfer, coupled with a 16-speed power shuttle that facilitates easy direction changes without clutching. This design enhances productivity in field operations, particularly in tasks requiring frequent forward and reverse motion, such as plowing or loading. However, the complexity of the transmission system may require increased maintenance and operator training to optimize performance.
| Description | 12-speed synchronized 16-speed power shuttle |
TRANSMISSION 1
The John Deere 6425 features a SyncroPlus synchronized transmission with 12 forward and 4 reverse gears, offering versatility for various agricultural tasks. The wet 225mm Perma Clutch II ensures smooth operation and efficient power transfer, benefiting heavy-duty applications but may require maintenance for optimal performance. With an oil capacity of 58.1 quarts, proper lubrication is critical to prevent overheating and extend longevity in diverse farming scenarios.
| Transmission | John Deere SyncroPlus |
| Type | synchronized |
| Gears | 12 forward and 4 reverse |
| Clutch | wet 225mm disc Perma Clutch II |
| Oil capacity | 58.1qts / 55.0L |
| Description | Three gears (1-3) plus reverse (R) in four ranges (A-D) |
TRANSMISSION 2
The John Deere 6425 features a robust Power Reverser transmission with 16 forward and reverse gears, allowing for precise control in various operational scenarios such as loader work or field tasks. The wet Perma Clutch II system enhances durability and reduces maintenance requirements, though it may require optimal oil levels (58.1 qts / 55.0 L) to function effectively. With maximum speed options of 30 KPH and 40 KPH, this tractor is well-suited for both moderate and high-speed applications, making it a versatile asset in agricultural settings.
| Transmission | John Deere Power Reverser |
| Type | power shuttle |
| Gears | 16 forward and reverse |
| Clutch | wet 225mm disc Perma Clutch II |
| Oil capacity | 58.1qts / 55.0L |
| Description | Four gears (1-4) in four ranges (A-D) with left-hand reverser lever. 30 KPH and 40 KPH maximum speed options available |
MECHANICAL
The John Deere 6425 offers versatile drivetrain options with 2WD or optional 4WD, enhancing traction and stability across various terrains. Hydrostatic power steering provides responsive handling, while the hydraulic wet disc brakes ensure reliable stopping power under load. The 12-speed synchronized transmission, or the more advanced 16-speed power shuttle, allows for smooth gear shifting, facilitating efficient operation in diverse agricultural applications.
| Chassis | 4x2 2WD/4x4 MFWD 4WD (optional) |
| Steering | hydrostatic power |
| Brakes | hydraulic wet disc |
| Cab | Two-post foldable ROPS |
| Transmissions | 12-speed synchronized 16-speed power shuttle |
HYDRAULICS
| Type | open center gear pump |
| Pressure | 2538psi / 175.0bar |
| Pump flow | 14.27gpm / 54.0lpm |
TRACTOR HITCH
| Rear Type | 2/1 |
| Control | load and depth control with mechanical top-link sensing |
| Rear lift | 10,030lbs / 4549kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | mechanical-hydraulic wet disc |
| Rear RPM | 540/1000 |
| Engine RPM | 540@2143 / 1000@2208 |
JOHN DEERE 6425 TIRES
The John Deere 6425 tractor offers versatility with 2WD and 4WD configurations, enhancing traction in various field conditions. The standard tire options (7.50R18/18.4R30 for 2WD and 13.6R24/18.4R30 for 4WD) provide stable ground contact and improved soil handling, particularly beneficial for tillage and row-crop activities. However, the choice between 2WD and 4WD may impact operational costs and maintenance depending on terrain; 4WD is advantageous in slippery or hilly conditions but can lead to increased tire wear and fuel consumption.
| Standard tires (ag) | Front: 7.50R18. Rear: 18.4R30 (2WD) Front: 13.6R24. Rear: 18.4R30 (4WD) |
DIMENSIONS
| Wheelbase | 94.5inches / 240cm |
| Length | 168.2inches / 427cm |
| Width | 87.2inches / 221cm |
| Height (ROPS) | 108.9inches / 276cm |
| Shiping weight | 8,333lbs / 3779kg |
| Max weight | 15,430lbs / 6999kg |
| Clearance (rear axle) | 63.5,63.9,66.2,67.4,71.5,72.7,72.7,73.9,75.4inches / 161cm |
| Rear axle | Flange |
DIMENSIONS & TIRES
The John Deere 6425 features a 94.5-inch wheelbase providing stability during operation, though its 2WD configuration may limit traction in adverse conditions. Weighing 8,333 lbs, it offers substantial durability for various agricultural tasks but may struggle in soft terrains compared to its 4WD counterparts. The tire sizes, with a front 7.50R18 and rear 18.4R30, suggest it is optimized for fieldwork but consider potential challenges in mobility on muddy ground.
| Wheelbase | 94.5inches / 240cm |
| Weight | 8,333lbs / 3779kg |
| Front tire | 7.50R18 |
| Rear tire | 18.4R30 (2WD) |
6425 SERIAL NUMBERS
| Location | Right side of main tractor frame |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 90 |
| Battery volts | 12 |
| Battery AH | 110 |