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 : Caterpillar 639D
The Wabco 353FT elevating scraper
There is nothing quite as good as when an equipment manufacturer ‘gets it right’. Wabco’s model 353FT elevating scraper is an excellent case in point....
The Caterpillar 639D elevating scraper
As in comedy, they say that timing is everything. Caterpillar introduced the model 639D just when the bottom was beginning to fall out of the...