Cat’s K2 dozers feature Automatic Traction-Control and Slope-Indicate systems

The new Cat D3K2, D4K2 and D5K2 Track Type Tractors have a refined design that includes engines meeting Tier 4 Final emissions standards. New features include Automatic Traction Control, Slope-Indicate and available Slope-Assist. Premium features of their predecessors are retained; these include hydrostatic drive, Stable Blade and Power Pitch systems and Eco Mode.

With respective power ratings of 80, 92 and 104 hp (59.7, 68.8 and 77.6 kW), the new models all use the Cat C4.4 ACERT engine, which meets emissions standards with the Cat NOx Reduction System (cooled exhaust gas recirculation), maintenance-free diesel oxidation catalyst, and selective catalytic reduction system.

Precision blade control for grading applications is a primary design feature for K2 models.

Automatic Traction Control, new for the K2 models, reduces track slippage when the machine encounters maximum load conditions. This feature, unlike the previous traction-control system, does not require operator interaction. It automatically adjusts machine operating parameters to keep the machine moving steadily and productively through the cut, minimizing the operator’s need to continually adjust the blade to prevent stalling. The net results are more consistent grades, reduced operator fatigue and substantially improved undercarriage life.

Also new for the K2 machines are the standard Slope Indicate and available Slope Assist features. Slope Indicate accurately displays the machine’s blade cross-slope direction, as well as its main-fall (fore/aft) direction, eliminating guesswork and allowing operators to grade with assurance.

Slope Assist facilitates achieving the required main-fall by automatically maintaining pre-established blade angles. Consistent grades are attained more quickly with the system, fill materials are conserved, and less-experienced operators are more productive. The system is part of the Cat AccuGrade Ready attachment, allowing the system to be easily upgraded to 3D capability.

The Eco Mode system for the new track-type tractors is designed to improve fuel economy up to 20 percent by reducing engine speed in less-demanding conditions. Two settings – Forward/Reverse or Reverse Only – are selected via the rotary throttle and, once set, Eco Mode controls engine speed at optimum levels, delivering maximum speed and power when required.

The operator-selected Stable Blade feature complements the operator’s blade-control input, resulting in finer control and more consistent grades.