John Deere 8400T
Power
250 hp[P] hp
Production
1997-1999
Engine
6-cylinder
Transmission
Full powershift
From the same series:
Introduction
John Deere 8400T Agricultural Crawler Tractor
The John Deere 8400T is a high-performance agricultural crawler tractor produced between 1997 and 1999 in Waterloo, Iowa, USA. Designed for heavy-duty field operations, this tracked machine provides significant pulling power and stability for demanding agricultural tasks.
Engine and Performance
The tractor is powered by a 6-cylinder, 8.1-liter liquid-cooled engine. It utilizes a turbocharged and intercooled induction system to generate 250 horsepower. The engine operates at a rated speed of 2200 RPM, featuring a compression ratio of 16.5:1. Cooling and lubrication are managed by a 35.9-quart coolant system and a 22.7-quart oil capacity.
Transmission and Drive
Equipped with a full powershift transmission, the 8400T offers 16 forward and 4 reverse gears, allowing for seamless speed adjustments under load. The crawler drive system utilizes 16-inch tracks and an 89-inch wheelbase to ensure optimal weight distribution and traction. Steering is achieved through a hydrostatic power system, complemented by hydraulic wet disc brakes for reliable stopping performance.
Hydraulics and Hitch
The hydraulic system features a pressure/flow compensated (PFC) design with a standard pump flow of 30 gpm, which can be upgraded to 38 gpm. With a total system capacity of 65 gallons and a pressure rating of 2900 psi, it supports 3 to 5 valves for implement control. The rear hitch is a category III/IIIN type, capable of lifting 15,650 lbs.
Operator Environment and Electrical
The operator interface consists of the standard CommandView Cab, designed to provide visibility and ergonomic control during long working hours. The electrical system runs on 12-volt battery power, utilizing a dual-battery setup and a 140-amp alternator to ensure consistent power supply for all electronic functions.
Conclusion
The John Deere 8400T is a specialized machine engineered for high-traction applications. With its robust engine, heavy lift capacity, and stable crawler platform, it remains a reliable choice for professional agricultural operations requiring consistent performance on difficult terrain.
Production Information of John Deere, 8400T
- Agricultural Crawler tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|
Engine Specifications of John Deere, 8400T
- John Deere
- Liquid-cooled
- Turbocharged intercooled
- 6-cylinder
| Oil capacity | 22.7 qts [21.5 L] |
|---|---|
| Displacement | 496 ci [8.1 L] |
| Compression | 16.5:1 |
| Bore/Stroke | 4.56x5.06 inches [116 x 129 mm] |
| Coolant capacity | 35.9 qts [34.0 L] |
| Starter volts | 12 |
| Rated RPM | 2200 |
| Air cleaner | Two paper elements |
Transmission Information of John Deere, 8400T
Transmission variants 1
| Type | Full powershift |
|---|---|
| Gears | 16 forward and 4 reverse |
| Oil capacity | 260 qts [246.1 L] |
Mechanical Specs of John Deere, 8400T
- CommandView Cab standard
- Hydraulic wet disc brakes
| Drive | Crawler |
|---|---|
| Steering | Hydrostatic power |
Power Information of John Deere, 8400T
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 |
Hydraulics Specifications of John Deere, 8400T
| Type | Pressure/flow compensated (PFC) |
|---|---|
| Pump flow | 30 gpm [113.6 lpm] |
| Valves | 3 to 5 |
| Capacity | 65 gal [246.0 L] |
| Capacity(optional) | 38 gpm (optional) [143.8 lpm] |
| Pressure | 2900 psi [200.0 bar] |
Three-Point Hitch of John Deere, 8400T
| Rear Type | III/IIIN |
|---|---|
| Rear lift | 15,650 lbs [7098 kg] |
Electrical System of John Deere, 8400T
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Batteries | 2 |
| Charging system | Alternator |
| Charging amps | 140 |
Where it sits
With 250 hp[P] HP, the John Deere 8400T sits between 8300T (222 HP) and 8410T (261 HP) in John Deere's range. Its power puts it in the 96th percentile of 1990s models in our database (2097 machines).
Frequently asked questions
How much horsepower does the John Deere 8400T have?
The John Deere 8400T delivers 250 hp[P] HP.
What years was the John Deere 8400T produced?
The John Deere 8400T was produced in 1997-1999.
What engine does the John Deere 8400T have?
The John Deere 8400T is powered by a 6-cylinder engine.
What transmission does the John Deere 8400T use?
The John Deere 8400T uses a Full powershift transmission.