John Deere 8400
Built: 1994–1998 · Series: 8000er-Baureihe
More machines from model year 1994
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
John Deere 8100 to 8400 T – Deere's first big rubber-tracked tractors of the 1990s: T for the track version, 8400 wheeled, 8400 T tracked of the same class, own 8.1-litre six-cylinder, 136 to 191 kW
With the 8000 series, John Deere brought its first generation of big rubber-tracked farm tractors to market in the mid-1990s, taking on Caterpillar's Challenger, which had until then dominated the tracked-tractor segment of professional arable farming. The type logic is simple: the number orders the power class in ascending order, and the T suffix marks the tracked version against the otherwise identical wheeled tractor of the same class – the 8100 T, 8200 T and 8300 T ran only as tracked machines, while the 8400 and 8400 T stood side by side as wheeled and tracked versions. All models were powered by the same in-house 8.1-litre six-cylinder diesel that also worked in the contemporary wheeled tractors of the 8000 series.
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The register lists 5 versions with an engine of 8,120 to 8,132 cm³, outputs of 136.2 to 191.4 kW, torque of 770 to 1,054 Nm and operating weights of 8,705 to 11,607 kg at 2,200 rpm.
The 8000 series' tracked tractors spread the high weight over a larger footprint and so lower ground pressure – an advantage on heavy, waterlogged soils that the wheeled version cannot offer, though it scores with lower wear and easier road travel.
On used tracked models, the condition of the rubber belt, rollers and drive wheels count, on all models the condition of gearbox and hydraulics and engine oil consumption, plus parts supply, which is more limited for undercarriage parts than for the standard tractor.
Sources: SpecCodex register, model data: John Deere 8000er-Baureihe, John Deere (manufacturer)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 260 hp (191.4 kW)correct |
| Rated speed | 2,200 rpmcorrect |
| Torque | 1,054 Nmcorrect |
| Cylinders | 6correct |
| Displacement | 8,120 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 5,447 mmcorrect |
|---|---|
| Width | 3,012 mmcorrect |
| Height | 3,090 mmcorrect |
| Ground clearance | 405 mmcorrect |
| Unladen weight | 8,705 kgcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 16V/4Rcorrect |
| Forward gears | 16correct |
| Reverse gears | 4correct |
| Front tyres | 16.9 R 30 AScorrect |
| Rear tyres | 20.8 R 42 AScorrect |
| Top speed | 38 km/hcorrect |
Working data
| Fuel tank capacity | 512 lcorrect |
|---|
Origin and approval
| Construction | bridge-frame constructioncorrect |
|---|
Other data
| Linkage category | Cat III/IIIcorrect |
|---|---|
| PTO speed | 540/1000 rpmcorrect |
Where this model stands
Power-to-weight ratio: 22 kW/t (191 kW / 8.7 t)
Power class: Heavy (> 180 hp)
Stronger than 95% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the John Deere 8400 have?
The John Deere 8400 delivers 260 hp.
How much does the John Deere 8400 weigh?
The unladen weight is 8,705 kg.
What engine does the John Deere 8400 have?
6 cylinders, 8,120 cm³ displacement, Diesel.
How fast does the John Deere 8400 go?
Top speed is 38 km/h.
What are the dimensions of the John Deere 8400?
5,447 mm × 3,012 mm × 3,090 mm.
When was the John Deere 8400 built?
Production years: 1994–1998.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 25 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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