Mercedes Benz 403
1 model in this series
Mercedes-Benz Unimog U 65 of series 403: a water-cooled four-cylinder diesel implement carrier producing 48 kW (65 hp), built 1969 to 1976, with an unladen weight of 3,442 kg and a top speed of 70 km/h.
The U 65 belongs to the Unimog (Universal-Motor-Gerät) series 403 from Mercedes-Benz, built at the Gaggenau plant. The Unimog was designed as an off-road, multi-purpose vehicle for agriculture, construction and municipal services, with power take-offs, mounting spaces for implements and portal axles; the U 65 designation refers to this series over the period 1969 to 1976.
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The U 65 is powered by a water-cooled four-cylinder diesel engine with 3,782 cm3 displacement, producing 48 kW (65 hp) at a rated speed of 2,550 rpm. At an unladen weight of 3,442 kg, a wheelbase of 2,380 mm and a width of 2,000 mm, it reaches a top speed of 70 km/h, high for an implement carrier. Height and length are 2,330 mm and 4,050 mm.
With portal axles and high ground clearance, the Unimog of this series was built for off-road use, slopes and poor tracks, with power take-offs front and rear and mounting spaces for front, mid and rear implements. Its comparatively high road speed set it apart from classic farm tractors and also suited it to towing work over longer distances.
When buying a used Unimog U 65, the portal axles and their reduction gearing are the main check point, since oil leaks and wear in the axle hubs are common on this type of construction. Also check the front and rear power take-offs for function, the frame for corrosion after decades of off-road and winter-road, salted use, and the completeness of the mounting spaces, since missing implement brackets significantly reduce the value of an implement carrier.
Sources: SpecCodex-Register: Kennwerte des Modells Mercedes-Benz Unimog U 65 (403)
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