Models 750K and 850K crawler dozers have been upgraded with a PowerTech 6.8-liter Tier 4-Final diesels with 165 and 205 horsepower, respectively.
The D155AX-8 crawler dozer has an operating weight of 89,300 pounds and is powered by a 354-horsepower Komatsu SAA6D140E-7 diesel
Cat D8T dozer has maximum power of 312 horsepower with a Tier 4-Final, Cat C15 ACERT engine
The D7E crawler dozer, with its diesel-electric power train, has been upgraded with three dozing features
The Cat D6T crawler dozer has been updated for Tier 4 Final with a Cat C9.3 ACERT engine rated at 207 horsepower.