Caterpillar launch new D9T dozer
New Cat machine delivers enhanced productivity and operator safety, and meets latest emissions standards
CATERPILLAR’s D9T dozer has been specially engineered for reliability and long-term durability in the most demanding applications with new features that enhance performance, productivity, operator convenience and safety, and serviceability.
The new dozer is powered by Cat C18 ACERT engine, which meets Tier 4 Final/Stage IV emissions standards and delivers 436hp (325kW) at 1,800 rev/min. A high torque rise of 36% allows the dozer to power through tough material, while new high-efficiency cooling package, advanced electronic controls for the powertrain and implement hydraulics, a quieter cab with enhanced information monitoring, and safety and serviceability refinements define the new D9T.
The new D9T combines these design enhancements with its predecessor’s premium features, including: a durable mainframe with cast steel main case; a pivot shaft that transfers blade loads directly to the mainframe; a modular drivetrain with three-speed power-shift transmission and differential steering system; a heavy-duty undercarriage with track roller frames and bogie-suspended rollers; a wide selection of blades; intuitive controls; and expansive visibility.
The previous D9T model is still available in less regulated countries and can achieve emissions levels equivalent to Tier 2 and Tier 3 standards.
The newly launched D9T dozer features a new advanced productivity electronic control system (APECS) that has been designed to improve transmission shifting performance, providing a higher level of comfort for the operator and increasing productivity.
APECS works in conjunction with an enhanced auto-shift system, which automatically selects the optimum gear/engine-speed match, based on load and ground speed, to increase productivity and fuel economy. In addition, the transmission features an electronically controlled main relief valve to reduce pressure during idling to save fuel.
The use of blade-control technology – assisting the D9T’s productivity and simplifying the operator’s job – includes automated blade assist (ABA), which allows operators to select pre-set blade-pitch positions for the dig, carry, and spread portions of the cycle. ABA is standard with the D9T dual-tilt dozer blade option.
Autocarry automates blade lift during carry segments longer than 100ft (30.5m), and it automatically positions the blade to minimize track slip. In addition, an available automatic ripper control adjusts ground speed and ripper depth to minimize track slip.
Another blade control option, the Cat Grade Control 3D system, provides precise, automatic positioning of the cutting edge and requires no blade-mounted masts and cables. The system reduces the need for grade staking and grade checking, which, in turn, reduces the need for people on the ground, thus improving safety while reducing costs.
To improve the operating environment, a new multi-color, touch-screen information display allows the operator to monitor machine performance and adjust machine parameters to tailor performance to the task. A work monitor screen, within the Information Display, provides real-time data about machine performance to optimize productivity.
Also new for the D9T is a seatbelt reminder that illuminates an in-dash icon when the dozer starts, and it adds an audio reminder if the machine is placed in gear without the belt being fastened.
To enhance work site safety, a number of lighting packages are available including halogen, high-intensity discharge and LED. Access and egress lighting controls are conveniently positioned and allow lights to be programmed to best suit the working situation.
