Mercedes-Benz Museum: The Road Cars Published on November 27, 2017 in Galleries by Michel Deslauriers Photo: Michel Deslauriers 1960 Mercedes-Benz LK 338 Dump Truck. Payload capacity of 16,535 lbs. (7500 kg). Engine: six cylinder Displacement: 10,809 cc Output: 180 hp (132 kW) Top speed: 75 km/h