Caterpillar's F-series wheeled excavators include the M314F, M316F, and M322F. The M314F and M316F are equipped with the Cat C4.4 ACERT engine, rated at 141 hpr maximum net power. The M322F uses the Cat C7.1 ACERT engine, rated at 169 hp. Both engines meet U.S. EPA Tier 4 Final emission standards and feature added torque and faster response to changes in load.
The C7.1 ACERT engine integrates an emissions after-treatment system, which requires no attention other than periodically replenishing the diesel-exhaust-fluid tank. Emissions technology includes the Cat NOx-reduction system, selective catalytic reduction system, diesel oxidation catalyst, diesel particulate filter (DPF), and high-pressure/common-rail fuel system. The C4.4 engine uses the same emissions technology, except for not using a DPF.
Optional Cat Bio HYDO Advanced hydraulic oil and B-20 biodiesel blends can be used with no reduction in system life.
An engine-idle-shutdown system saves fuel by stopping the engine after it has idled for a preset interval. In addition, the Eco Mode on the new models reduces engine speed to save fuel, but does not compromise power or performance.
The exterior wheeled excavators has been completely restyled, including a new ROPS-compliant operator's cabin featuring higher pressurization, larger door with added glass, and new windshield with parallel wipers. Also new are the mirrors, rain visor and light protectors, and larger skylight. The rearview camera in the redesigned counterweight is standard, as is the right-side camera with its separate in-cab color monitor.
Entering and exiting the cabin is now easier with three redesigned access steps and newly designed door handrails. Inside the cabin, the left-hand console tilts to facilitate entering and leaving the seat, and the console includes an integral safety lever. Also new is the tilting, adjustable-height steering wheel.
