Right machine wrong timing
Image: From a Caterpillar promotional spec sheet dated 1979, the businesslike lines of the 639D elevating scraper are very apparent. To the best of my...
Tag : motor scrapers
The Clark-Michigan 110-15 scraper
Clark-Michigan is a name more commonly known to New Zealand contractors for its range of wheel loaders rather than motor scrapers. However the Michigan range...
The Caterpillar 631A scraper
A direct descendent of the 1950’s DW21, the 631A was introduced in 1960 and was the second of Caterpillar‘s new ‘600’ series motor scrapers to...