| Manufacturer | New Holland |
| Price | - |
| Model | T8.420 |
| Equipment Type | Row-Crop Tractors |
| Factory | Racine, Wisconsin, USA |
OCED TRACTOR TEST 2086A 2
| Description | Diesel CVT 4WD July 14 - 15, 2014 Link: OCED Tractor Test 2086A file PTO performance Drawbar performance Pull at 8.3 KPH Pull at 4.86 KPH |
| Max power | 255.76hp / 190.7kW |
| Fuel use | 16.5gal/hour / 62.5l/hour |
| Power at rated engine speed | 305.95hp / 228.1kW |
| Power at rated PTO speed | 351.44hp / 262.1kW |
| Max pull | 28484lbs / 12920kg |
NEW HOLLAND T8.420 POWER
| Engine (gross) | 367hp / 273.7kW |
| PTO (claimed) | 305hp / 227.4kW |
| Drawbar (tested) | 255.76hp / 190.7kW |
| PTO (tested) | 351.68hp / 262.2kW |
ENGINE DETAIL
The New Holland T8.420 tractor is powered by a robust FPT F2C turbocharged diesel engine with a large displacement of 8.7L, delivering impressive power outputs of 367hp (gross) and 419hp (maximum). Its high-pressure common rail fuel system and efficient selective catalytic reduction (SCR) contribute to meeting Interim Tier 4 emissions standards while ensuring optimal performance. A potential challenge may be the maintenance of the viscous fan cooling system, especially under heavy load conditions, which requires proper attention to avoid overheating during prolonged operations.
| Description | FPT F2C turbocharged intercooled diesel 6-cylinder liquid-cooled |
| Displacement | 531ci / 8.7L |
| Bore/Stroke | 4.606x5.315inches / 117x 135 mm |
| Emissions | Interim Tier 4 |
| Emission control | selective catalytic reduction (SCR) |
| Power (gross) | 367hp / 273.7kW |
| Maximum Power | 419hp / 312.4kW |
| Fuel system | electronic high-pressure common rail |
| Cooling system | viscous fan |
| Air cleaner | dual dry element |
| Compression | 15.9:1 |
| Rated RPM | 2000 |
| Starter | electric |
| Starter volts | 12 |
NEW HOLLAND T8.420 ENGINE
The New Holland T8.420 features a robust FPT 8.7L 6-cylinder diesel engine, providing excellent torque and efficiency for heavy agricultural tasks. Its large fuel tank capacity of 152 gallons ensures extended operating hours, while the 23.6-gallon DEF tank supports compliance with Tier 4 emission standards, reducing environmental impact. However, operators should consider the added weight and space requirements when transporting the tractor and ensure access to refueling options given the significant fluid capacities.
| Description | FPT 8.7L 6-cyl diesel |
| Fuel tank | 152gal / 575.3L |
| Exhaust fluid (DEF) | 23.6gal / 89.3L |
TRANSMISSION
The New Holland T8.420 features an Auto Command CVT, allowing for smooth, infinitely variable speed adjustment which enhances operational efficiency in diverse field applications. Its 4-range system provides flexibility, enabling optimal power delivery while minimizing fuel consumption. However, the continuous variable transmission may require specialized maintenance and operator training to maximize its potential.
| Transmission | Auto Command CVT |
| Type | continuously variable transmission |
| Gears | infinite (4-range) forward and reverse |
MECHANICAL
The New Holland T8.420 tractor features a 4x4 MFWD chassis with inboard planetary final drives, providing enhanced traction and maneuverability, especially in challenging terrains. Its power steering allows for effortless handling, while the continuously variable transmission offers optimal power management and fuel efficiency for various applications. The standard cab with air-conditioning improves operator comfort during prolonged use, making it suitable for intensive agricultural tasks.
| Chassis | 4x4 MFWD 4WD |
| Final drives | inboard planetary |
| Steering | power |
| Cab | Cab standard with air-conditioning. |
| Transmission | continuously variable transmission |
HYDRAULICS
| Type | closed center pressure flow compensating |
| Valves | 4 to 6 |
| Pump flow | 44gpm / 166.5lpm/75gpm / 283.9lpm *With optional MegaFlow |
TRACTOR HITCH
| Rear Type | IVN/III |
| Control | electronic lower-link draft sensing |
| Rear lift | 17500lbs / 7938kg/19500lbs / 8845kg |
| Front Hitch | optional |
| Front lift | 12800lbs / 5806kg |
| Drawbar | Cat. 4 |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Rear RPM | 1000/540/1000 |
| Engine RPM | 1000@1778 |
NEW HOLLAND T8.420 TIRES
The New Holland T8.420 features standard agricultural tires with a front size of 420/85R34 and a rear of 80R50, providing excellent traction and flotation on varied terrains. The larger rear tires enhance stability during heavy pulling operations, which is advantageous for tillage and planting scenarios. However, operators may face challenges regarding maneuverability in tight spaces due to the overall width and tire configuration.
| Standard tires (ag) | Front: 420/85R34L480 / 80R50. Rear: |
DIMENSIONS
| Wheelbase | 139.8inches / 355cm |
| Length | 255inches / 647cm |
| Operating weight | 30165lbs / 13682kg |
| Front axle | Terraglide |
| Rear axle | Bar: 5 by 120inches / 127by 3048 mm |
DIMENSIONS & TIRES
The New Holland T8.420 features a robust wheelbase of 139.8 inches, optimizing stability and maneuverability, which is beneficial in both field and transport applications. With a weight of 30,165 lbs, it offers substantial traction, making it suitable for heavy-duty tasks such as tilling and plowing, although its mass may lead to soil compaction in sensitive areas. The large front tire specifications (420/85R34L480 / 80R50) enhance flotation and traction in varied terrains, but careful selection of tire pressure is critical to maintain optimal performance and reduce soil disruption.
| Wheelbase | 139.8inches / 355cm |
| Weight | 30165lbs / 13682kg |
| Front tire | 420/85R34L480 / 80R50 |
T8.420 SERIAL NUMBERS
| Location | Serial number plate on the front-right of the tractor frame. |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 200 |
| Battery volts | 12 |