Overview
The Unimog 30 is a 4x4 farm tractor manufactured between 1956 and 1960 in Gaggenau, Germany, as a variant of the Unimog 411 for the North American market. It is powered by a 1.8L Mercedes-Benz four-cylinder diesel engine and utilizes an 8-speed transmission with a dry disc clutch. The vehicle's dimensions include a 67.7-inch wheelbase and an operating weight of 4,900 lbs, which can be ballasted to 6,729 lbs.
Ideal Applications
Nebraska Test Performance:
During Nebraska Tractor Test 607, the unit achieved a maximum drawbar pull of 4,806 lbs and recorded a maximum belt power of 28.43 hp.
Mechanical and Drive System:
This tractor is equipped with a 4x4 4WD drive system, four-wheel hydraulic internal expanding shoe brakes, and a transmission providing eight forward and two reverse gears.
Belt Pulley and Engine Specifications:
The 1.8L liquid-cooled vertical I-head engine operates at a rated 2550 RPM, while the 12.4-inch diameter belt pulley is rated for 1080 RPM with a speed of 3500 ft/min.
Production
| Description | Truck-type tractor / Built in Gaggenau, Baden-Württemberg, Germany / The Unimog 30 Diesel was a variant of the Unimog 411 sold in North America for farm use. |
|---|---|
| Manufacturer | Unimog (a part of Mercedes-Benz) |
Engine
| Engine type | Mercedes-Benz 1.8L 4-cyl diesel |
|---|---|
| Fuel tank | 10.88 gal (41.2 L) |
| Air cleaner | oil bath |
| Bore/Stroke | 2.950x3.9375 inches (75 x 100 mm) |
| Compression | 19:1 |
| Coolant capacity | 13.8 qts (13.1 L) |
| Description | Mercedes-Benz OM636 / diesel / 4-cylinder / liquid-cooled vertical I-head |
| Displacement | 107.8 ci (1.8 L) |
| Oil capacity | 7 qts (6.6 L) |
| Power | 30 hp (22.4 kW) |
| Rated RPM | 2550 |
| Starter volts | 12 |
| Belt (tested) | 28.43 hp (21.2 kW) |
| Drawbar (tested) | 25.02 hp (18.7 kW) |
Transmission
| Clutch | dry disc |
|---|---|
| Gears | 8 forward and 2 reverse |
| Transmission type | 8-speed |
Mechanical
| Cab | Open operator station or soft cab. |
|---|---|
| Description | Four-wheel hydraulic internal expanding shoe brakes |
| Drive | 4x4 4WD |
Dimensions & Tires
| Ballasted weight | 6,729 lbs (3052 kg) |
|---|---|
| Front tread | 50.7 to 59 inches (128 to 149 cm) |
| Height | 81 inches (205 cm) |
| Operating weight | 4,900 lbs (2222 kg) |
| Rear tread | 50.7 to 59 inches (128 to 149 cm) |
| Wheelbase | 67.7 inches (171 cm) |
| Front tire | 7.50x18 |
| Rear tire | 7.50x18 |
| Weight | 4,900 lbs (2222 kg) |
| Wheelbase | 67.7 inches (171 cm) |
| Ag front | 7.50x18 |
| Ag rear | 7.50x18 |
Belt Pulley
| Diameter | 12.4 inches (31 cm) |
|---|---|
| RPM | 1080 |
| Speed | 3500 ft/min (1066.80 meters/min) |
| Width | 6.1 inches (15 cm) |
Nebraska Tractor Test 607
| Belt fuel use (max) | 2.3 gal/hour (8.7 l/hour) |
|---|---|
| Belt power (max) | 28.43 hp (21.2 kW) |
| Description | Diesel 6-speed 4WDMarch 5 - 13, 1957Link: Nebraska Tractor Test 607 file / Drawbar performance / Gear 2 used for power test. / Gear 1C used for pull test. |
| Max power | 25.02 hp (18.7 kW) |
| Max pull | 4,806 lbs (2180 kg) |