Caterpillar has relaunched the 745 articulated dump truck or hauler with a suite of new features geared to increase productivity and improve the overall working environment for operators.
While retaining its 41-tonne rated payload capacity, the updated Cat 745 articulated truck has a redesigned cab with an external “spinal” rollover protection structure that eliminates the structural pillar to give operators improved visibility from the cab.
Upon entry into the cab, a “wake up” feature now initiates machine displays as soon as the door is opened, while the lighter, stronger cab door has a shut assist feature for improved sealing against dust infiltration, as well as sound levels, by five decibels at the operator’s ear.
One particularly positive development for the Middle East is the introduction of infrared glass that reduces solar heating inside the cab, while additional vents above and behind the operator enables the automatic climate control system to more efficiently heat and cool the cab.
In terms of performance, the new 745 incorporates all the field-proven features and performance of the C Series that deliver fast cycle times, high productivity and unmatched fuel efficiency for its class.
Its powertrain is driven by a Cat C18 ACERT engine, which is rated at 504 net hp, or 375 kW. The machine now also has an economy mode for a 5% reduction in fuel consumption in applications where a truck is not required to operate at full productivity.
Cat’s CX38B high density power shift transmission enhances the hauler’s overall performance and productivity, while permanent six-wheel drive enables the truck to tackle even the most challenging terrain.
Automatic retarding control meanwhile manages machine retarding through a combination of engine, brake, gear selection and service brake application without operator intervention.
Back inside the cab, a hill assist feature also facilitates efficient stopping and starting on grades, while the waiting brake system, quickly engaged by a push-button on the control lever, temporarily applies the service brake during pauses in the work cycle.
A new combined transmission and hoist lever gives operators efficient single-lever control over truck speed and body hoisting functions to minimise operator effort and automate repetitive operations.
At the flick of a switch, operators can choose between manual or fully automatic assisted hoisting control, which automatically applies the Waiting Break, sets the transmission in neutral and hoists the body to maximum angle at high RPM.
In a further improvement of operator safety, the machine incorporates the Cat Detect with Stability Assist system, which audibly and visually warns the operator if tractor or trailer unit has reached an angle threshold where it is in risk of tipping over.
Caterpillar’s Advanced Automatic Traction Control has also been improved by technology that will proactively apply the differential locks prior to any wheel spin, while throttle smoothing prevents sudden acceleration when operators accidentally dip the accelerator pedal in highly rough terrain.