John Deere 8400T Tractor

Manufacturer John Deere
Price -
Model 8400T
Equipment Type Agricultural Crawler Tractors
Factory Waterloo, Iowa, USA

ENGINE DETAIL

The John Deere 8400T is powered by a robust turbocharged intercooled 6-cylinder engine with a displacement of 8.1L, offering a high compression ratio of 16.5:1, which enhances efficiency and power output at a rated RPM of 2200. With a liquid cooling system and appropriate oil and coolant capacities (22.7qts and 35.9qts, respectively), it ensures reliable thermal management for extended operational periods. Challenges may include maintenance of the dual air cleaner system for optimal airflow, and performance can be maximized in applications requiring high torque, such as heavy tillage or towing in agricultural settings.

Description John Deere turbocharged intercooled 6-cylinder liquid-cooled
Displacement 496ci / 8.1L
Bore/Stroke 4.56x5.06inches / 116x 129mm
Air cleaner two paper elements
Compression 16.5:1
Rated RPM 2200
Starter volts 12
Oil capacity 22.7qts / 21.5L
Coolant capacity 35.9qts / 34.0L

JOHN DEERE 8400T ENGINE

The John Deere 8400T features an 8.1L 6-cylinder engine, delivering robust torque for demanding agricultural tasks. Its tracked design enhances traction and minimizes soil compaction, making it ideal for wetter terrains. However, servicing can be more complex due to the undercarriage, which may challenge maintenance efficiency over time.

Description John Deere 8.1L 6-cyl

TRANSMISSION

The John Deere 8400T features a full powershift transmission with 16 forward and 4 reverse gears, providing smooth and efficient power delivery for various field applications. With a substantial oil capacity of 260 quarts (246.1 liters), it ensures optimal lubrication and prolonged performance, particularly in heavy-duty operations. However, the complexity of the powershift system may require specialized training for operators to maximize its capabilities and manage maintenance effectively.

Types full powershift
Gears 16 forward and 4 reverse
Oil capacity 260qts / 246.1L

JOHN DEERE 8400T TRANSMISSION

The John Deere 8400T tractor, equipped with a 16-speed full powershift transmission, provides seamless gear transitions that enhance efficiency in various field applications. This transmission allows for optimal torque management and improved fuel efficiency, making it ideal for heavy-duty tasks such as tillage or planting. However, operators may face a learning curve with the complexity of the powershift system, potentially impacting productivity during initial use.

Description 16-speed full powershift

MECHANICAL

The John Deere 8400T features a crawler drive system, providing superior traction and stability on uneven terrain. Its hydrostatic power steering enhances maneuverability, making it suitable for precision farming applications. The hydraulic wet disc brakes ensure reliable stopping power, crucial for safety in demanding farming scenarios.

Drive crawler
Steering hydrostatic power
Description Hydraulic wet disc brakes CommandView Cab standard

CAPACITY

Fuel 130gal / 492.1L
Hydraulic system 65gal / 246.0L

HYDRAULICS

Type pressure flow compensated (PFC)
Capacity 65gal / 246.0L
Pressure 2900psi / 200.0bar
Valves 3 to 5
Pump flow 30gpm / 113.6lpm 38gpm (optional) / 143.8lpm

TRACTOR HITCH

Rear Typ III/IIIN
Rear lift 15,650lbs / 7098kg

POWER TAKE-OFF (PTO)

Rear PTO independent
Rear RPM 1000

JOHN DEERE 8400T TRACKS

Width 30inches / 76cm

DIMENSIONS & TRACKS

Wheelbase 89inches / 226cm
Weight 25,000lbs / 11340kg
Description 16-inch tracks

ELECTRICAL

Ground negative
Charging system alternator
Charging amps 140
Batteries 2
Battery volts 12


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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