Caterpillar introduces the next generation of articulated trucks. The new B Series models now include the 735B, offering a 36-ton (32.7-tonne) payload, the 740B with its 43.5-ton (39.5-tonne) payload, and the 740B EJ with popular ejector body, carrying a 42-ton (38-tonne) payload. All three models are available with either Tier2/Stage2 equivalent or Tier 4 Interim/Stage IIIB certified emissions configurations to meet the needs of customers around the world. Both configurations feature revised transmission and traction control systems that enable higher productivity. The new trucks also focus on reducing driver effort and cutting operator fatigue through improved cab design.
Reduced Exhaust Emissions – Tier 4 Interim/Stage IIIB
The three B Series trucks will be available with Tier 4 Interim/Stage IIIB certified Cat® diesel engines for those countries that require them. Caterpillar has employed proven electronic fuel and air supply components for maximum reliability, with a modular after-treatment solution, capable of withstanding the arduous working conditions within construction projects.
The result is a range of more powerful emissions-compliant diesel engines offering improved overall performance.
The systems employed on the Tier 4 Interim/Stage IIIB B Series trucks produce 90% less particulate matter (PM) and reduce nitrous oxides (NOx) emissions by as much as 50 percent. Emissions controls include a Diesel Particulate Filter (DPF) to trap soot. The necessary process of removing the soot is called regeneration. The “on-the-go” regeneration system allows the regeneration to take place without operator intervention and without sacrificing working time. Regeneration can be completed in a number of ways, so that there is no need to change machine work patterns.
Optimized Drive Train
Caterpillar has further improved its six-wheel-drive system. A new, fully proportional torque-distribution automatic traction control (ATC) system eliminates the need for any driver intervention to maintain maximum traction in difficult operating conditions. In the previous generation of articulated trucks, the operator had to manually engage floor- and dash-mounted switches to bring cross- and inter-axle differential locks into play. With the new proportional ATC system, the truck automatically and constantly varies the required proportion of lock-up on both cross-axle and inter-axle diff locks as underfoot conditions change. The automatic system leaves the operator free to concentrate on driving the truck, without having to think about how to gain the best traction in different ground conditions. The new proportional ATC system works in harmony with the hydraulic steering system—without compromise in tight turning maneuvers.
The optimized proportional ATC system results in improved traction in all operating conditions for reduced cycle times and improved productivity. The automated system also reduces the possibility of system abuse, cutting wear and prolonging component life and reducing costs.
Caterpillar also has upgraded its field proven automatic transmission with the introduction of a number of significant technological improvements. These changes mean that gear changes are much smoother, as torque is maintained through each gear change, resulting in improved acceleration, especially on grades. Part Throttle Shifting at lower speeds results in improved fuel efficiency and easier machine operation and provides the operator an automotive feel during gear changes.
The combination of increased engine power, improved transmission and proportional ATC results in improvements in machine and operator efficiency, cutting cycle times and boosting productivity. Smoother gear changing and reduced operator stress also improves overall operator satisfaction and comfort throughout the working shift.
Improved Operator Environment
The B Series trucks are designed and built around the operator. Behind the tough exterior, with its powerful new styling, integrated heavy-duty bumper and fully enclosed belly guards, the Cat truck offers the ideal operator environment. A new injection molded dash panel with revised trim provides an improved fit and a more aesthetically pleasing working environment.
The redesigned instrument cluster and fully customizable Color Multi-Purpose Display (CMPD) give the operator all of the information needed. Machine monitoring includes information as diverse as regeneration status, fuel levels, autolube status, load count and major component temperatures. The CMPD also incorporates a live feed from the rear view camera, which is automatically engaged when reverse gear is selected.
The revised cab interior has a new headliner with switches for electric mirrors, regeneration operations and a heavy duty CD/radio. An upgraded driver’s seat with new multiple position adjustments improves the class-leading ride quality further, while new materials offer improved durability and long service life. A heated driver’s seat is available as an option. New operator and passenger grab handles improve stability when travelling over rough or sloping terrain.
The heating and air-conditioning system has been upgraded to improve efficiency and ensure the ideal climate in the cab. The engine hood raise switch is now positioned in the cab for ease of access and increased security. Other detail improvements include a new cab external grab rail, a repositioned ground level fuel filler for improved access, new machine width position marker lights and wider spaced turn indicators. High-intensity high-level work lights are now available as an option.
All B Series models are produced at Caterpillar’s state-of-the-art production facility in Peterlee, UK. The site has benefitted from unparalleled financial investment, extensive employee skills training and a full product validation process, to ensure that every truck exceeds the expectations of customers around the world.