|• Length: 12 ½”
• Width: 3 ¼”
• Overall Height: 3 ½”
• Full Rear Fender Group
• Hydraulic Lines
• Cushion Hitch
• Ejector and Apron
• New Tire Material
• Warning/Safety Labels
Paint and markings are approved by the manufacturer for accuracy.
Includes a signed and serial-numbered specifications brochure reproduction.
In response to numerous requests from its dealer network for a high-capacity wheel-tractor scraper to meet the needs of their power plant customers, Caterpillar offered an uncatalogued, special order only scraper model specifically targeted for coal stockpiling applications. This was accomplished by combining the single axle tractor from the 657 and the powered rear scraper section of the 666.
This combination provided customers with a coal hauling capacity in excess of 70-cubic-yards when heaped in its modified bowl. Changes to the rear 666 scraper unit included extended side panels, a taller front apron, a redesigned ejector, and full rear fenders making it ideal for handling the coal at high volumes. The first 657/666 Coal scraper was produced in 1967 and was continued in very limited numbers with 657B/666B models.
By 1975 this special build machine was replaced by the 657B Coal Scraper which featured a new rear scraper unit design with a bowl that was longer and taller than a standard 657B scraper.