Unimog U 600 – U 900 Agrar
Manufacturer
Models
Unimog U 600 (421), Unimog U 800 (403), Unimog U 900 (406)
Years
1977-89
Info
The 6-cylinder U 84 introduced in 1971 was renamed U 900 in 1977. At the same time, the U 66 introduced in the late '60s became the U 800, and the U 52 became the U 600. These models were available with both a fabric roof and a hard roof.
Distinctive features of the Unimog included 4 equally sized driving wheels, suspended front and rear axles, and dry disc brakes with air pressure assistance. A three-point hitch was available both at the front and rear, and power take-offs were available at the front, rear, and center. In the final phase, after the U 800 was discontinued, the U 600 was also available in a 72-horsepower Comprex turbocharged version.
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Technical data
| Model | Unimog U 600 (421) | Unimog U 800 (403) | Unimog U 900 (406) |
|---|---|---|---|
| Options | |||
| Manufacturer name | Unimog | Unimog | Unimog |
| Imported to Finland | Yes | Yes | Yes |
| Years | 1977-89 | 1977-88 | 1977-89 |
| First year sold | 1977 | 1977 | 1977 |
| Last year sold | 1989 | 1988 | 1989 |
| Engine model | OM 616 | OM 314 | OM 325 |
| Cyl/Turbo/Intercooler | 4 | 4 | 6 |
| Displacement | 2404 cm³ | 3780 cm³ | 5675 cm³ |
| Bore x stroke | 91×92,4 mm | 97×128 mm | 97×128 mm |
| Rated power hp/rpm DIN | 52/3500 | 75/2600 | 84/2550 |
| Rated power | 52 | 75 | 84 |
| Rated speed | 3500 | 2600 | 2550 |
| Torque Nm/rpm DIN | - | 245/1600 | 260/1600 |
| Gears | 8+2/8+8 | 12+4 | 12+4 |
| Synchronized gears | 8+2/8+8 | 12+4 | 12+4 |
| Reverser | -/x | - | - |
| Speeds in km/h | ?-62,0 | 4,1-73,8 | 4,1-73,8 |
| Hydr. flow l/min | - | 40 l/min | 40 l/min |
| Lift controls | mech. | mech. | mech. |
| Lift capacity | - | 3000 kg | 3000 kg |
| PTO speeds | 540/1000 | 540/1000 | 540/1000 |
| Brakes | drum | dry disc | dry disc |
| Steering | hydrost. | hydrost. | hydrost. |
| Turning circle m 4WD | 10 | 10.9 | 10.8 |
| Front tyres 4WD | 10.5-18 | 12.5-20 | 14.5-20 |
| Rear tyres 4WD | 10.5-18 | 12.5-20 | 14.5-20 |
| Weight 4WD | 3000 kg | 3800 kg | 3900 kg |
| Height with cab | 225 cm | 235 cm | 239 cm |
| Length (2WD/4WD) | 401 cm | 416 cm | 416 cm |
| Wheelbase (2WD/4WD) | 225 cm | 238 cm | 238 cm |
| Fuel tank | 90 l | 120 l | 120 l |
| Solid cab | x | x | x |
| Diff. lock | differential lock with cogs | differential lock with cogs | differential lock with cogs |
| Creeper gear | opt. | opt. | opt. |
The data has been collected primarily from brochures. In some cases, sources contain conflicting information. In such cases, we have attempted to select the most reliable information.
There is particularly significant variation in speed data, which varies depending on factors such as tire size. For tires, only the size most commonly used in Finland is listed.
Other changes during the model history have been addressed in the text section. For the front axle lock, the Finnish term "hammaslukko" (gear lock) is used for all 100% locks.
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