Doosan DA30-5, DA45-5 ADTs

Models DA30-5 and DA45-5 are updated Doosan articulated dump trucks. The 375-horsepower DA30-5 has a payload rating of 61,729 pounds, heaped to its capacity of 22 cubic yards. The DA45-5 has a 500-horsepower engine, payload of 90,390 pounds, and heaped capacity of 31.9 cubic yards.

The ADTs have a new front suspension, updated to a hydro-gas, self-leveling system. The hydro-gas cylinders connect to pressure accumulators, which replace previous shock absorbers and a rubber spring.

Common oil is used in the articulated dump truck’s wheel hubs, tandem rear bogie, and limited slip differential. The limited slip differential transfers the power to the left and right front wheels. The differential automatically provides the highest torque to the wheel that has the best grip. An oil-bathed gear box at the rear of the truck is free swinging to allow maximum ground contact of the wheels for the best traction, power to ground and stability.

Both Doosan ADTs come standard with an active payload measuring system that provides operators with improved truck management and load optimization by helping to protect against extensive overloading. Operators can view each load’s weight on the LCD screen in the operator cab.

An exterior traffic light-style indicator alerts excavator and wheel loader operators who are filling the ADT. They include three lights: red, yellow, and green. If the green light is illuminated, the truck is within the rate of payload. If the yellow light is illuminated, the operator is within 10 percent of the rate of payload. If the red light is illuminated, the operator has overloaded the truck for the allowed payload.

For easier maintenance, a centralized maintenance panel is accessible behind the left front tire. With ground-level access, operators gain access to the following: level gauges for hydraulic oil and brake fluid; auto-lube system and grease storage; transmission filters; drain ports and the oil sump. Further maintenance access on the platform level provides service to the hydraulic filter, oil fill and system bleeder, transmission oil fill, brake fluid fill and test ports. A diesel-powered engine heater and fuel pump are available as an option.

As part of the new braking system, a new transmission retarder adjustment lever was added to the right-hand side in the cab below the truck’s steering wheel. Operators can choose from four levels of retarder force: 100 percent, 75 percent, 50 percent, and 25 percent. As an alternative, a keypad button is available and serves the same function as the lever.

The cab interior has been redesigned with more than a dozen new features, including a new dashboard with a modified shape and a soft-touch automotive material and a high-quality finish and appearance. The new monitor has bigger gauges, and user-friendly graphics and icons can be controlled by buttons on the display panel. The panel now has the capability to display multiple camera views for increased visibility around the ADT.