Caterpillar said its new 824K wheel dozer builds on the performance of predecessor models with engineering refinements in its power train, operator station and structures, and in features that enhance safety, serviceability and machine management. With a net power rating of 405 hp (302 kW) and a maximum operating weight of 74,966 lb (34,000 kg), the 824K is available with six-blade configurations ranging in capacity from 6.6 to 21.1 yd3 (5.0 to 16.2 m3) to customize it for production dozing, stockpile dozing or cleanup work. The Cat C15 ACERT engine features an electronically controlled fuel delivery system, an engine idle shutdown system to conserve fuel by limiting idling time, and a delayed shutdown feature to ensure that the engine is not stopped until operating temperatures have stabilized. Two engine options are available that meet either U.S. Environmental Protection Agency (EPA) Tier 4 Final/European Union (EU) Stage IV emission standards or Tier 3/EU Stage IIIA equivalent emission standards.
The electronically controlled, 4F/4R Cat power shift transmission can be set by the operator to automatically upshift or downshift based on machine speed, and Single Clutch Speed Shifting controls allow the 824K to carry momentum through range shifts for high productivity. The left foot pedal serves as an engine decelerator, transmission neutralizer and brake, depending on the degree of application. As a decelerator, the left pedal allows the operator to temporarily reduce engine speed by overriding the throttle lock setting when maneuvering around obstacles.
A new fuel tank provides a minimum 12 hours of operation, depending on the application. An optional tire pressure monitoring system provides real-time information to the operator in the cab, ensuring proper inflation and optimizing tire life. The cab, isolation-mounted to the frame, is pressurized with filtered air, and the selected temperature is maintained automatically. The control panel uses large, backlit switches with LED indicators, and a simple two-position rocker switch controls the parking brake. An optional rearview camera with in-cab monitor increases operator awareness.
Routine maintenance points are grouped and accessible from ground level or from non-skid walkways that are protected with handrails. Swing-out doors on both sides of the engine compartment provide easy access to daily service checks, and ecology drains simplify service and help prevent spills. In addition, a ground level power service center has electrical disconnect, emergency engine shutdown and stairway light switches.
Cat noted that the 824K's design integrates massive, purpose-built structures and heavy-duty components that can support multiple rebuilds. The new dozer features a full box-section rear frame designed to resist twisting forces and shock loads encountered in heavy dozing. Steering cylinder mounts are designed to effectively dissipate steering loads into the frame, and axle mounts are heavy-duty components that contribute to the overall structural integrity. This results in significant cost savings and sustained optimum performance over the life cycle of the 824K, according to the company.