than that in the previous Stage IIIA model. Field tests show a reduction of up to 17.5% in fuel consumption, depending on the operating mode selected and the work being undertaken.
Contributing to the overall reduction in fuel consumption is the improved cooling efficiency and the installation of a new fan clutch with electrically controlled fan speed. The latter is dictated by the coolant, hydraulic oil and cooled charged air temperatures and target engine speeds; and the electrically controlled fan speed results in much lower fan noise and better fuel efficiency.
In addition, a new ECO Gauge on the control panel also helps the operator to lower fuel consumption by providing real time monitoring of fuel rate and actual engine-percent load. Two new operating modes (P+ mode: Power Plus and L: Lifting) improve controllability and efficiency with additional sensors which further allow owners/operators to optimise management of pump/engine/main control valve according to their needs.
To increase performance in rough terrain conditions, the drawbar pull has been increased by 5% in the DX140LC-3 model, while swing speed and torque have been increased by up to 12%.
Increased Operator Comfort
The new ROPS and OPG certified cab offers more space (+6%) for the operator and several convenient features such as direct control through the joysticks, which have new proportional thumb wheel switches and integrated buttons to provide precise, proportional control of attachments. New highly responsive joystick controls improve the controllability and productivity of the machine.
A new 7-inch colour high quality visual control console offers an attractive display and excellent functionality. All functions can be controlled both from the instrument panel as well as via a new jog/shuttle control next to the joystick, a feature exclusive to Doosan excavators. A new function allowing the operator to select and set hydraulic flow and pressure for attachments, with several preset positions, is a standard feature. The control panel offers a new ergonomic layout with the most used switches located within easy reach on the right hand console.
High Durability and Serviceability
The new DX140LC-3 crawler excavator has a more robust undercarriage with reinforced components, including track links, track springs and sprockets. The boom and arm have been strengthened by increasing the metal thickness at critical points and using reinforced bushings. The engine bonnet is split into several parts to improve serviceability, whilst components such as filters, valves and batteries are all within easy reach for service work.
Like all Scotia Plant customers, D A MacDonald Contractors benefits from the dealer’s on-site service network, covering everything from emergency repairs to routine maintenance. Scotia Plant’s trained engineers have years of experience of repairs and servicing of heavy plant and machinery and the company’s service vans are fully equipped with workshop tools and parts for on-the-spot service work. Genuine parts are readily available from the local Coatbridge facility.