9 material differences · fewer than 12
Tractor oneDeutz (KHD) D 68061974–1980No measured PTO figureTractor twoInternational Harvester 6841977–1981No measured PTO figure
Which should you choose?
Read our verdict on the D 6806 and the 684 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
9 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | D 6806 | 684 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 66 hp | 68.0 hp | — |
| Engine declared | KHD F4L 912 | INTERNATIONAL-HARVESTER D-239 | differs |
| Displacement declared | 3.77 L | 3.91 L | — |
| Maximum torque declared | 177 lb·ft · 240 N·m | 162 lb·ft · 220 N·m | +9% D 6806 |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | Independent dry Fichtel & Sachs double clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 7.5 gpm · 28.3 L/min | 9.9 gpm · 37.5 L/min | +33% 684 |
| Pressure declared | 2,901 psi · 200 bar | 2,698 psi · 186 bar | +8% D 6806 |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 6,085 lb · 2,760 kg | 5,181 lb · 2,350 kg | +17% D 6806 |
| Maximum permissible mass declared | 11,023 lb · 5,000 kg | — | — |
| Wheelbase declared | 84.6 in · 2,150 mm | 88.0 in · 2,235 mm | — |
| Length declared | 146.1 in · 3,710 mm | 146.5 in · 3,720 mm | — |
| Width declared | 76.4 in · 1,940 mm | 70.1 in · 1,780 mm | +9% D 6806 |
| Ground clearance declared | 19.7 in · 500 mm | 14.6 in · 370 mm | +35% D 6806 |
| Turning radius, braked declared | 11.7 ft · 3.56 m | 10.9 ft · 3.33 m | +7% D 6806 |
| Fuel tank declared | — | 81.4 qt · 77.0 L | — |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Deutz (KHD) D 6806 sources
Source
- Source: Traktorenlexikon, “Deutz D 6806”
- Source: Traktorenlexikon, “Deutz D 6006”
International Harvester 684 sources
Source
- Source: Traktorenlexikon, “IHC 684”
- Source: Traktorenlexikon, “IHC 574”