After the Second World War, Lima also tried to catch up with the production of diesel locomotives. A total of 136 switchers were delivered between 1949 and 1951, which received the model numbers A-3149, A-3171, A-3080 and A-3170. They are better known among railroad fans according to their power output under the designations LS-750, 800, 1000 and 1200. Hamilton diesel engines were used, which had six cylinders in the two weaker variants and eight cylinders in the more powerful ones. The generator and traction motors were from Westinghouse. However, these locomotives could not manage to assert themselves against the competitors. 