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In terms of reliability, the company expects the D7E to perform as good, if not better, than the D7R. "The D7E has 60% fewer moving parts," says [Amy Moore-McKee]. "So there are fewer components to wear out or potentially break. The components it does have require less service than on any other drive system available." For example, there are no friction clutches. "That contributes to a longer drivetrain life and low service requirements."
Crawler I Dozers The John Deere 764 HSD defines a new machine form that fills a gap between The cab-forward design on the Komatsu dozers improves visibility to the blade, finish dozers and motor graders. eases operation for less experienced operators and allows for a smoother ride. Dozer Designs Push the Cutting Edge After years of evolution, there is a full-scale revolution. By Curt Bennink A fter a decade of slow evolution, 2008 marks the advent of revo- lutionary change in dozer designs. lized. For example, the 764 HSD could replace a finish dozer and a grader in applications where you tional dozer, enabling faster grading speeds. “We are able to final grade at up to twice the speed of a steel track grading ability of a motor grader in that case.” He claims the 764 HSD would actually be more maneuver- Convention has been placed on the are simply finishing up a building machine,” notes Drescher. “As the able than a grader in this situation. sideline as “clean sheet” designs pad or a section of road. “It has the technology advances for grade con- In addition, an 18-mph top speed have resulted in the introduction of potential on a site to replace some of trol systems, we will probably exceed through its hydrostatic transmission unique solutions to previous limita- the machines that are only working that a little bit.” allows the 764 HSD to move quickly tions. Following is a look at three of part of the time,” says Drescher. “You The length combined with 6.2-psi across large jobsites. “Because it does the most innovative concepts intro- can then dedicate those machines to ground pressure and center-pivot have rubber tracks, you can go across duced this year. another job where they are working articulation offer some unique oper- any paved or finished structures all of the time.” ating characteristics. “It allows you without damage to the surfaces,” Defining a new The unique specifications of the to do some pretty close in and pre- says Drescher. “You eliminate the machine category 764 HSD give it advantages in cer- cise work, like fine grade rock in a need to either board over the surface This Spring, the John Deere 764 tain applications. With a 22-ft. 5-in.- finish parking lot,” says Drescher. “It or put the equipment on a lowboy HSD (High-Speed Dozer) took long base, it is longer than a tradi- has the flotation of a dozer and the and haul it to the end of the site.” CONEXPO-CON/AGG attendees For jobsites that are close together, by surprise. With a profile unlike the 764 HSD can easily be roaded. “It any dozer currently on the market, has turn signals, flashing warning the quad rubber-tracked 764 HSD is lights and slow-moving vehicle license intended to bridge the gap between a plate capability,” notes Drescher. dozer and a motor grader in certain At 200 hp, the 764 HSD is not applications. going to replace a primary scraper “It is going to show really well tractor. But it is equipped to pull in any application that requires a rear-mounted attachments such as machine with pushing ability that sheepsfoot compaction wheels, land can work around finished pavement, planes or smaller pull-type scrapers. plus requires mobility on a jobsite,” “We have shown it is a real versatile says Dan Drescher, product mar- machine with an 11- or 12-yd. dolly ket manager - crawlers, John Dee
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