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FOUR new D Series small-chassis models are the newest additions to the Cat compact track loader (CTL) and skid-steer loader (SSL) ranges: SSL models 226D and 232D; and CTL models 239D and 249D — all incorporating the design innovations of larger D Series machines.

These innovations include include a sealed/pressurised cab, electro-hydraulic controls, redesigned lift arms, premium seat choices, and optional Advanced Display.

All use an electronic Cat C2.2 engine. The 232D is designed with agricultural applications in mind, and the 239D and 249D are engineered as strong contenders in the general construction and rental markets.

The 239D, with its suspended steel-embedded rubber track, replaces the 247B3 Multi-Terrain Loader (MTL) and delivers lower owning and operating costs for machine owners not requiring the capabilities of the rubber-wheeled, softer track system of the MTL.

Further advantages of the new small-chassis SSL models include a two-speed drive system with a top speed of 11 mph for the 226D and 232D and for the CTLs operating weights of less than 8,000 pounds for the 239D and 249D.

The radial-lift 226D and vertical-lift 232D have standard rated operating capacities (ROC) of 1,550 and 1,850 pounds respectively, increasing to 1,650 and 1,950 pounds with the optional counterweight. The radial-lift 239D and vertical-lift 249D have standard ROCs of 2,050 and 2,300 pounds, which the optional counterweight increases to 2,250 and 2,500 pounds.

The new models have 10 percent more horsepower, 10% more torque, and deliver a 14% increase in fuel efficiency, compared with predecessor models. A demand fan is standard, ensuring optimum cooling and reduced horsepower draw.

The D-Series cab (Cab One) is completely modular and self-sealing, leaving no part of the cab attached to the chassis when the cab is tilted. A redesigned HVAC system supplies 20% more airflow and an approximate 50% increase in heating and cooling rates. The standard control monitor has a single-code security feature to deter theft and unauthorised operation. The Advanced Display monitor expands security (operator) codes to 50 and can store and recall operating preferences for each code, allowing individual operators to tailor the machine to experience level and application.  Preferences include response rates for the hydrostatic drive and implement-hydraulic systems, as well as settings for ride-control, creep speed, and top-speed limit.