Caterpillar celebrated the production of 175,000 medium high drive (elevated sprocket) crawler dozers by producing three commemorative 175,000 units.
Three customers took possession of the commemorative units, which feature special decals on the fenders denoting the 175,000-unit milestone. The 175,000 image appears inside the cab as well, where it is embroidered on the headrest and printed on a plaque denoting each unit’s limited-edition status.
Built in East Peoria, Illinois, the first two commemorative units were Cat D6 XE electric drive dozers, featuring a dark gray and black paint scheme. The third unit, a D6 dozer with 4-speed, fully automatic transmission, is finished in traditional Cat yellow with special black tracks and blade.
In 1985, Caterpillar expanded its elevated sprocket undercarriage concept to its medium dozer line with the launch of its H Series models. Cat said the high drive design conformed to the ground better, improving durability, serviceability, and performance compared to low-drive and oval track designs.
The Cat D4H, D5H, D6H and D7H dozer models were the first to feature the high drive design, and in 1987, the D8L model was added to the family.
D6 and D6 XE dozers are manufactured exclusively in East Peoria and Grenoble, France, along with other models in the medium dozer line. In addition, Caterpillar manufactures medium dozers in Piracicaba, Brazil, and Rayong, Thailand, to meet global market needs.