1957: Allis Chalmers D-14 1958-1960: Allis Chalmers D-14 with minor upgrades. 1960-1962: Allis Chalmers D-15 Series II with improved features. 1962-1964: Allis Chalmers D-17. 1964-1965: Allis Chalmers D-17 Series III with enhanced capabilities. 1966-1968: Allis Chalmers D-17 Series IV with modern advancements.
Production years (depending on model) 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968
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