Three new Cat articulated trucks extensively redesigned
Cat's 730, 730 EJ (Ejector), and 735 articulated trucks have been redesigned in areas such as the doors and lighting of operator cabs, as well as vehicle speed control
Three new articulated truck lines have been "extensively redesigned" by Cat to enhance the performance of their predecessors.
Cat's 730, 730 EJ (Ejector), and 735 articulated trucks have been redesigned with improvements to their respective previous models, the 730C2, the 730C2 EJ, and the 735C.
Among the updates are new operator stations, which include new controls, transmission-protection features, a new hoist-assist system, an advanced traction control system, a new stability-assist system, and the fuel-saving Eco operating mode.
In addition, the design of the 730 and 730 EJ has been enhanced with automatic retarder control and a hill-start feature.
The 735 retains these features from its C-Series predecessor, and incorporates design refinements such as a new Cat C13 ACERT engine, and structural and dimensional modifications that reduce empty weight by 22%, while retaining the productivity of the outgoing 735C.
Cat's CX31 transmission has been added to the 730 and 730 EJ, as well as the 735.
As a result of the new features, the 735 is expected to make fuel-efficiency gains of up to 19%.
The following pages outline the key design updates made to Cat's articulated trucks.
NEXT PAGE: Operator station design
Operator cab updates
One of the updates made to the operator stations is the 'spinal' roll-over protection design (ROPS) design deployed for the cab.
The spinal ROPS design incorporates a rear-quarter glass that eliminates a structural pillar in the C-Series design, allowing improved rear visibility.
A new, 'wake-up' feature initiates the machine's displays when the door is opened. Meanwhile, the doors now feature a lighter design, with a shut-assist feature for improved sealing against dust infiltration.
The overall cab design results in lowering inside sound levels to 72 dB(A) – a 7 dB(A) reduction compared to previous models.
New, optional features include the infrared glass included within the cabs, which will help to reduce solar heating inside the cab, and left- and right-hand sliding windows, which increase ventilation and facilitate communication with workers and the loading-vehicle operator.
A new, automatic climate-control (HVAC) system positions more vents above and behind the operator for increased heating and cooling efficiency. Additionally, a new heated/cooled seat has been designed to give operators increased adjustments that allow 'dialing in' personal-comfort settings.
Moreover, a new lighting system has been installed for additional safety.
The lighting system can be controlled through a ground-level switch, and illuminates the cab's entry steps and hitch area. Optional integrated payload lights provide an external indication of payload levels for the loader operator.
Another optional feature is the Cat Connect Payload technology, which calculates total payload through the sensors fitted on the walking-beam suspension.
Load-status lights installed on all four corners of the cab roof ensure visibility to the load operator from any angle.
In addition, the standard Cat Detect/Stability-Assist system monitors the working angle of the tractor and body, as well as the grade, and cautions the operator if the machine is approaching the set threshold angle, stopping the dump process if potential tipping is anticipated.
The Cat Advanced Automatic Traction Control system has also been added to the units, helping to apply differential locks to avoid wheel spin.
NEXT PAGE: Vehicle control
Improved vehicle control
A new combined transmission-and-hoist lever has been added to the trucks, with the aim of providing single-lever control of vehicle speed and body-hoisting functions, and reducing operator effort, as well as automating repetitive operations.
A switch in the cab allows operators to choose between manual and assisted hoisting control, the latter selection automatically applying the waiting brake, shifting the transmission to neutral, and raising the body to maximum angle, with the at engine idle. Assisted hoisting also returns the body to the lower position. Both raise and lower functions feature automatic cushioning and speed reduction at movement limits.
New buttons in the combined transmission and hoist lever allow setting and limiting machine speed, and selecting the transmission waiting brake. In addition, a new shift-protection system brings the truck to a safe stop if a directional shift is made while the truck is moving.
The new, combined shifting/hoisting lever also incorporates a parking position; a tertiary brake switch sets the parking brake, in the event of main and secondary braking malfunction.