The TuffTrac rear axle suspension provides maximum traction in high articulation environments.
With its Coronado SD, Freightliner brings the latest advancements in engineering and technology to the construction segment of the heavy-duty truck market.
"We created a truck strong enough to tackle the most extreme elements," states Richard Shearing, director of product strategy. "Everything about the Coronado SD was carefully developed and built to keep it running and earning revenue in any environment."
The Coronado SD is available in set-back and set-forward axle configurations. The front axles are rated from 12,000 to 22,000 lbs., with the rear axles rated from 23,000 to 70,000 lbs. A TuffTrac rear axle suspension provides maximum traction in high articulation environments. In addition, an up to 50° wheel cut aides maneuverability in tight spaces.
The new vehicle can be powered by a Detroit Diesel DD16, DD15 or DD13, or by a Cummins ISX. All of these powerplants have been designed to use Selective Catalytic Reduction (SCR) to meet the EPA 2010 mandate. This allows up to 600 hp and 2,050 lb.-ft. of torque.
Designed for the long haul
Cab design often differentiates one heavy-duty truck from its competitors. The Coronado SD's aluminum cab resists corrosion and saves weight. Coach joints where the cab roof meets the sidewalls protect against water damage. A two-piece windshield, which is easy to replace when damaged, is bonded to the cab to increase rigidity.
Uptime was a key consideration throughout the design process. "We understand that every minute counts, so we developed the Coronado SD to keep customers out of the shop and on the job longer," says Melissa Clausen, director of product marketing. "We focused on and have delivered what is needed to get the job done - a resilient and sturdy truck that is easily maintained out of the shop."
Some of the key features on the truck - such as the 90°, one-piece, fiberglass tilt hood to access the engine for daily checks - were developed specifically with the vocational driver in mind. The truck's headlight bulbs are readily available at any auto parts store, and are easily replaced without special tools. The fenders come with impact-absorbing material that helps eliminate damage and cracks common with vocational use. Standard steel grille opening reinforcements provide extra strength.
The electronic and wiring systems were designed to maximize the working life of the truck. The electrical connections come out of the front wall of the cab in two distinct 76-pin connectors to simplify wiring and reduce diagnostic and wear costs. Redesigned connectors also seal out moisture for fewer electrical failures due to water penetration.
Dual chrome steel air intakes on either side of the hood minimize the infiltration of water, snow, road debris or dust. Air is routed to a single air filter with dust holding capacity equal to or better than traditional external dual cleaners. Optional pre-cleaners are also available.