Caterpillar’s 735C, 740C EJ and 745C articulated trucks feature a host of upgrades over the machines’ predecessors, the B Series. With engines that meet Tier 4 Final standards, the 735C’s C15 ACERT engine delivers 452 horsepower, and the C18 ACERT engine in the 740C EJ and 745C delivers 511 horsepower.
The trucks have 36-, 42- and 45.2-ton rated payload capacities, respectively, including a 1.7-ton increase for the 745C when compared to the 740B. T
The 740C EJ is an ejector model that combines the 745C’s tractor with a horizontal discharge body that enables the truck to unload material to uniform depths while traveling at speed. The ejector model also provides stability when discharging the load in less-than-ideal conditions, including soft terrain, on side slopes and on grades.
The trucks include Cat’s Clean Emissions Module, an aftertreatment system that includes a diesel particulate filter that automatically regenerates with no intervention from the operator. The CEM also features a selective catalytic reduction system and easily accessible DEF tank.
The transmission, Cat’s CX38 High Density Power Shift, has nine forward speeds and two reverse speeds. The CX38’s electronic features include modulation of transmission clutch engagement for smooth shifting and a torque management feature that maintains consistent torque flow through the transmission during gear-range changes while providing automatic shift selection tailored to the job.
The transmission also features automatic traction control which adjusts the clutch lock’s engagement level while the truck is moving, and the ability to set retarding control to fully automatic.
Additional features include a system that facilitates stopping and starting on grades, and a braking system that applies the service brakes during pauses in the work cycle.
You can watch a video that gives best operating practices for the new trucks and goes over all of the new features below.