Classic Machines Contractor ScrapersClassic Machines: Caterpillar’s big three-axle single, the 660 scraperContrafed PUblishingSeptember 21, 2018 by Contrafed PUblishingSeptember 21, 2018 With the arrival in New Zealand recently of a Caterpillar 660, the largest of Caterpillar’s single engined scrapers, it’s time we had a look at...