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Caterpillar (CAT) Excavators, Dozers, & Motor Graders Machine.Market D8R ® Series II Track-Type Tractor Engine 3406E Gross Power 252 kW/338 hp Flywheel Power 231 kW 310 hp Weights Operating Weight 37 875 kg Shipping Weight 29 575 kg Courtesy of Machine.Market D8R Series II Track-Type Tractor The D8R Series II combines power and efficiency with advanced technology for outstanding production at lower cost-per-yard. Engine Torque Divider Operator Station ✔✔The rugged, easy-to-service 3406E The single-stage torque converter with ✔ The D8R II operator station is designed engine features the electronically output torque divider provides greater for comfort and ease of operation. controlled, direct injection fuel system driveline efficiency and higher torque pg. 6 for lower combustion sound and multiplication. pg. 5 reduced emissions. The 3406E meets current EPA, EU, and JMOC emissions regulations. pg. 4 Advanced Modular Cooling System Work Tools/Attachments (AMOCS) ✔ A variety of bulldozer blades, rippers AMOCS utilizes an exclusive two pass and other options allows you to cooling system and increased cooling customize the D8R II to match your surface area to provide significantly specific application. The heavy box- more cooling capacity than section blade design also helps resist conventional systems. pg. 11 twisting and cracking. pg. 12 The D8R Series II durable construction is made for tough working conditions. It keeps material moving with the reliability and low operating costs you expect from Cat® tractors. 2 Courtesy of Machine.Market Undercarriage Structure Transmission ✔✔Elevated sprockets move the final Mainframe is heavy, strong and durable. Caterpillar ® designed and drives above the work area, isolating Full box sections, steel castings and manufactured differential steering them from ground impacts. The continuous rolled rails provide durable provides smooth turning control, with suspended undercarriage puts more support to the undercarriage, elevated uninterrupted power to both tracks. The track on the ground for higher traction final drives and other integral frame differential steer allows easier turns and less slippage. It also absorbs shocks components. pg. 9 while maintaining desired ground speed for a smoother ride and longer machine for fast cycle times and high production. life. pg. 8 pg. 10 Serviceability Complete Customer Support You'll receive the most serviceable Less time spent on maintenance gives machines from the most committed you more time on the job. pg. 14 dealers. pg. 14 ✔ New feature 3 Courtesy of Machine.Market Engine The 3406E engine, when matched with the torque divider and field proven powershift transmission, will provide years of dependable service. High Tensile-Strength Iron Block. The Caterpillar foundry casts the 3406E EUI block from high tensile-strength gray iron. The one-piece casting is stabilized to maintain internal dimensions under all operating conditions. A steel spacer placed between the head and block eliminates the need for block counterbores. Cooling. An internal top-deck cooling shelf increases coolant flow to the top of the cylinders for long cylinder liner and piston life. The deep-skirted lower structure and heavy internal ribbing add strength and rigidity to the block. Carbon Steel Forged Crankshaft. The crankshaft is a carbon steel forging, fully heat-treated, super-finished and dynamically balanced. Steel Spacer. A steel spacer between the block and head eliminates the need for block counterbores, extending block life. Improved Reliability. Improved reliability through reduction of complex mechanical linkages and by electronically protecting the engine during: 3406E EUI Engine. The 3406E engine Reduced Exhaust Smoke. Exhaust ■ Cold starts. meets worldwide emissions regulations smoke is significantly reduced through ■ Prolonged idling periods. for the Environmental Protection precise, electronic control of fuel ■ High altitude operation. Agency (EPA), the European Union metering and injection timing. (EU) and the Japan Ministry of Engine Capabilities. The large Construction (JMOC). displacement and high torque rise of the Turbocharged and Aftercooled. Provide 3406E EUI engine allows the D8R II to high horsepower while keeping rpm and doze through tough material and exhaust temperatures low. The 3406E provides good lugging capability to electronically controlled unit injection move heavy loads efficiently. fuel system helps it meet current emission standards. 4 Courtesy of Machine.Market Torque Divider The D8R II torque divider provides efficiency benefits of a direct-drive power train while maintaining the capabilities of a converter drive. Torque Divider Performance. An improved single-stage torque converter sends 70% of engine torque through a converter and 30% through a direct drive shaft for greater driveline efficiency and higher torque multiplication. The new torque converter provides improved efficiency and broader range of performance in second gear dozing and scraper pushloading. Key Benefits of Torque Dividers. Caterpillar uses torque dividers on large track-type tractors for several key reasons: ■ High reliability. ■ Proven component design. ■ Low dynamic torque. ■ Optimum combination of operator efficiency and driveline reliability. ■ Components are designed to absorb full engine power. ■ High torque multiplication to get heavy loads moving. Elevated Final Drives. Isolates final drives from ground and work tool induced impact loads for extended power train life. ■ Crown-shaved drive gears provide smooth, quiet, low maintenance Freewheel Stator. Improves torque Operating Efficiency and Driveline operation. divider efficiency. During machine Reliability. The torque converter shields ■ Splash lubrication and Duo-Cone® operation under low drawbar loads, the the driveline from sudden torque shocks Seals extend service life. stator is permitted to rotate to achieve and vibration. peak efficiency. The result is a reduction in heat and an increase in fuel efficiency. 5 Courtesy of Machine.Market Operator Station The D8R II operator station is designed for comfort and ease of operation. 6 Courtesy of Machine.Market Caterpillar Monitoring System. Provides Clear Full-Circle View. Tapered hood the operator instant feedback on the and "notched" fuel tank give the condition of operating systems and operator a clear line of sight to the front records such performance data as and rear work areas. The low rear high/low gauge readings to help window lets the operator see the ripper diagnose problems and manage tip. The large, single-pane windows in undercarriage. Caterpillar Monitoring the doors allow the operator to see both System provides gauges that monitor ends of the blade. the temperature of the engine coolant, Interior Amenities. The interior storage hydraulic oil and power train oil, plus and amenities include: the fuel level. ■ Intermittent windshield wipers. Alert Indicators. The Caterpillar ■ Small storage compartment behind Monitoring System provides alert seat for use as first aid kit. Single Twist Tiller With Push-Button indicators that monitor engine oil ■ Inside door releases. Speed Control. New on the D8R II is a pressure, inlet manifold temperature, ■ Lunchbox tie-downs. single twist tiller with push-button coolant flow, electrical system, ■ Cup holder. speed controls allowing one-hand transmission oil filter, air filter service ■ Cigarette ashtray. control of the direction and degree of indicator, engine fault warning light ■ Console pads. turns, forward-reverse shifting, and gear and hydraulic filter. It also has an easy ■ Standard 24 to 12 volt converter. selection. to read digital tachometer. ■ Power point plug-in behind seat. Hydraulic Control Lockout Valve. When ■ Perimeter-mounted headliner with Comfortable Operation. An isolation- engaged, the lockout valve prevents integral radio mount, speakers and mounted cab reduces noise and inadvertent operation of the hydraulic antenna. vibration. The cab is pre-wired for work tool attachments. a 12- volt radio mount recessed in Suspension Isolation-Mounted Cab. the headliner. Throttle Control. A rocker switch The D8R II features a suspension control sets the high or low idle with a isolation-mounted cab with standard Cat Comfort Series Seat. The new Cat touch of the finger. A decelerator pedal ROPS/FOPS. Comfort Series seat is fully adjustable gives the operator full control of engine and designed for comfort and support. Air Ventilation System. The D8R II air speed when the rocker switch is in the The seat and back cushions are thicker ventilation system features a 4-speed high idle position. and designed to reduce pressure on the blower fan for optimal operator lower back and thighs while allowing comfort. unrestricted arm and leg movement. 7 Courtesy of Machine.Market Undercarriage The Cat elevated sprocket is designed for better machine balance and component life. Bogie Suspension. Conforms more Positive Pin Retention (PPR) Track. closely to the ground to provide more Designed for high-impact and high- ground contact, especially in hard, loading applications such as mining, uneven terrain. Higher traction means heavy construction, demolition, and less slippage, better balance, and a waste disposal. Positive Pin Retention smoother ride. Track (PPR) is an exclusive Caterpillar design that mechanically locks the link to the pin. Rollers and Idlers. Feature symmetric Duo-Cone® seals with an abutment-style cap. 8 Courtesy of Machine.Market Structure Engineered and built to give solid support in the most demanding work. Mainframe. The D8R II mainframe is Equalizer Bar
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