La Manta Blanca

Páginas: 20 (4878 palabras) Publicado: 5 de noviembre de 2012
854G

®

Wheel Dozer

Blade Capacities Operating Weight Cat® 3508B EUI Diesel Engine Gross Power Flywheel Power

25 to 45 m3 99 395 kg 656 kW 597 kW

33 to 58 yd3 219,124 lbs 880 hp 800 hp

854G Wheel Dozer
Strong power train, combined with a heavy-duty front frame, provides long life and economical operation.
Engine The turbocharged 3508B Electronic Unit Injection diesel enginedelivers increased power, improved torque rise and more usable rimpull. Newly designed pistons and turbocharger, along with higher injection pressures, result in improved combustion and lower emissions. pg. 4 Power Train The Caterpillar electronically controlled planetary power shift transmission and Impeller Clutch Torque Converter with lockup clutch provide smooth, consistent shifting with rimpullcontrol and direct drive efficiency. pg. 4-5 Structures The 854G features a box-section rear frame and two-plate front frame design, providing strength and stability. Together they provide resistance to dozing shocks and stresses, absorbing shock loads and twisting forces. pg. 6

Engineered for demanding work in large dozing applications. The 854G Wheel Dozer joins the Caterpillar® wheel dozerline-up as an ideal match for large mining operations, power generating utilities, the general contracting industry and wherever mobility and production dozing is needed.

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Hydraulics Two, independent hydraulic systems and load sensing steering are the invisible forces behind the mobility and versatility of the 854G. pg. 7

Operator Station Experience a high level of efficiency andcomfort with one-hand operation provided by the STIC controller and a state-of-the-art cab. Operator productivity is also increased with wide range of viewing, reduced sound levels, improved ventilation and easy entry and exit. pg. 8-9

Blades and Blade Control Choose between 33 and 58 yd3 Semi-U, heavy-duty Semi-U and coal blades. Replaceable bolt-on cutting edges and bottom wear plates protect theblade, resulting in longer blade life. A single lever is used to hydraulically control all blade functions. pg. 10-11

Serviceability Maintenance jobs become easier with ground level access to major service points. Large engine doors, rear access stairs, and convenient service platform with large doors enhance the serviceability of the 854G. pg. 12

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Power Train
Cat power train deliverstop performance and durability in tough applications.
1 The Cat 3508B Diesel Engine is a four-stroke design and uses long, effective power strokes for more complete fuel combustion and optimum efficiency. The 3508B is designed with large displacement and a low speed rating for long hours of service between scheduled overhauls and lower operating costs.
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The 30 percent torque rise provideshigh lugging force during dozing and acceleration in high rimpull conditions. The torque curve effectively matches the transmission shift points to provide maximum efficiency and faster cycle times. Electronic Unit Injection (EUI) is a proven high-pressure, direct injection fuel system that electronically monitors operator demands and sensor inputs to optimize engine performance. Advanced DieselEngine Management (ADEM) system controls the fuel injector solenoids to start and stop fuel injection. This system provides automatic altitude compensation, air filter restriction indication, and will not allow the engine to fire until it has oil pressure, acting as a cold start protection and a form of pre-lube.
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2 Separate engine cooling system isolates theradiator and fan from the engine compartment providing lower sound levels, more efficient cooling and a sloped hood for increased viewing.
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Advanced Modular Cooling System (AMOCS) improves cooling capabilities by using a parallel flow system with 16 cores. Serviceability is improved with AMOCS as there is no top tank to remove and the radiator guard does not have to be tilted to remove the cores....
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