Autocar » A series, F models

In 1958 Autocar announced it new lightweight “A” series trucks, says they save up to 25 per cent, in tractor weight as compared to standard models. They cut as much as 4200 lb in some cases. Full range of tractor and truck models are available in both four and six-wheel versions. Diesel power plants offered range from 180 to 262 hp. For use in states where a “bridge formula” sets the gross weight limit, “axle-forward” types are included as well as “axle-back” models for non-formula states.

Frame side rails are deep section, heat-treated alloy aluminum. Flanges are increased in thickness to provide required frame stiffness in longer wheelbase chassis. All cross members are of fabricated or cast aluminum. On 6 x 4 models, aluminum channel stress absorber is located at tandem rear axle cross member. On 4 x 2 models, rear spring front and rear brackets are of heat-treated alloy aluminum. They have malleable iron, wear-resistant inserts molded in place.

Radiator assembly is of built-up construction. It has readily-replaceable cast aluminum upper and lower tanks, extruded aluminum side brackets, copper fin and tube radiator. Radiator is free to float independently of frame movement, acts in unit with cab and hood assembly. Vertical loading is taken on rubber cushion mounting with fore and aft movement controlled by adjustable tie rods. Radiator shutter is also of aluminum construction, and radiator shell and grille have been eliminated. Cab frame is heli-arc welded aluminum alloy, is covered with an aluminum skin. New models have fiber glass fenders.<\p>

In 1970 set-forward axle models were renamed: 2-axle truck called A42F, 3-axle truck - A64F. From 1971 these models would be produced with optional fiberglass hood and fenders.