THE new Cat 340D2 L hydraulic excavator, which replaces the 340D L, is designed for maximum fuel savings, reduced operating costs, long-term durability, and powerful hydraulic performance.
The excavator builds on the productive performance and durability of its predecessor with a more refined hydraulic system and a fuel-efficient Cat C9 engine that meets US EPA Tier 2, EU Stage II, and China Tier Two emissions standards.
“The new model, with an operating weight of 40,270 kg, features massive structural components; a heavy-duty undercarriage; a selection of booms, sticks, and work tools for optimum versatility; and a spacious, comfortable cab with low-effort, pilot-operated joysticks and a pressurisation system for a dust-free environment,” says a Cat spokesman.
The 340D2 L’s 270 hp C9 engine, with a field-proven reputation for powerful, reliable performance, is an estimated seven per cent more fuel efficient than the predecessor engine.
“Fuel savings result from an isochronous engine speed and a torque control system that reduces engine speed during no-load or light-load conditions, as well as from a new electric pressure sensor in the implement hydraulic system that can detect pump load demand precisely to improve system efficiency,” elaborates the spokesman.
The C9 engine also features a new three-stage fuel-filtration system to ensure reliable performance in operating areas where fuel quality is less than optimum. In addition, filter-service intervals are currently the same and the number of filters increased for a longer life of fuel system components. An electric priming pump simplifies filter changes by eliminating the need to fill filters with fuel before installation and possibly introducing contamination.
The 340D2 L’s powerful implement hydraulic system operates at a relief pressure of 35,000 kPA and produces maximum flow of 530 litres per minute to efficiently handle a variety of work tools. High- and medium-pressure control circuits are available to facilitate tool use. The operator can choose between two working modes – High Hydraulic Power or Economy – to match machine performance to the application. For further fuel savings and overall operating efficiency, the 340D2 L uses boom and stick regeneration circuits that significantly reduce the load on the hydraulic pumps.
Front linkage for the 340D2 L is designed for flexibility, high production, and efficiency in a variety of applications. The 6.5-m heavy-duty reach boom is available with a 3.2-m heavy-duty general-purpose stick. In addition, a mass excavation front linkage uses a 6.18-m boom, which can be equipped with either a 2.55-m or a 2.15-m stick for use with high-capacity buckets.
The mass excavation 340D2 L with its 8,450 kg counterweight can be fitted with heavy-duty buckets (2.60 cu m and 2.69 cu m) for optimal performance.
The 340D2 L has the distinguished Heavy Duty High Wide undercarriage, which absorbs stresses and provides excellent stability and high ground clearance in rocky work environments, bringing the upper frame in a safer high position, says the spokesman.
The cab design provides excellent visibility for the operator.