1971-02-01

The Allis-Chalmers HD-41 Crawler Tractor 710724

The final production culmination of the HD41 tractor represents an evolution of engineering criteria, design, testing, integrated manufacturing, and after sales-service techniques. It is also very representative of the engineering and technological challenges associated with the extrapolation of unit size to meet the requirement for larger, more productive units in today's expanding earthmoving and construction business.

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