& FREE Shipping. Ships from and sold by Amazon.com. Gift-wrap available. Antz [Blu-ray] has been added to your Cart. You’ve heard the statistics: A crawler undercarriage typically accounts for 20 percent of a dozer’s purchase price, but 50 percent or more of its lifetime repair tab. With that potential repair expense at stake, doing what you can to trim undercarriage expenses can considerably lower per-hour operating costs. That, in essence, is “undercarriage management”—a discipline (part science, part intuition, all refined by experience) that encompasses machine operation, routine maintenance, periodic evaluation, and, toughest of all, judgment calls about how best to handle wearing components. Cam350 free crack giveaway. Ignoring undercarriage management can be costly: “Wait until something catastrophic happens, like breaking a chain on the job site, then it’s field service, and you’re out there lifting and shoring to get the tractor out of the mud,” says Steve Deller, product support manager for West Side Tractor Sales, an equipment dealer in suburban Chicago. “Had the owner in that situation been just a little proactive—measuring wear periodically and following a few basic recommendations—that expense might have been avoided.” Premium Undercarriages Designed to Reduce Wear A number of equipment manufacturers have developed premium undercarriage systems to address a primary source of undercarriage wear, namely, external wear on the bushing. The John Deere SC-2 design, for example, fuses super-hard metallic slurry to the outside of the bushing. The coating, says the company, can provide double the life of conventional bushings before requiring a turn—or might eliminate the need for turning in some applications. Case also says that its CELT (Case Extended Life Track) system can double conventional bushing life. This system places a hardened bushing over the standard bushing, allowing the larger outer bushing to rotate and, thus, eliminate scrubbing between the bushing and sprocket. Caterpillar’s SystemOne uses long-life components throughout the undercarriage, and a focal point of the design is a rotating bushing that uses double seals at the bushing/link interface. Hidetools parental control crack. Komatsu’s PLUS design, (Parallel Link Undercarriage System), which also uses a rotating bushing and dual seals, incorporates an additional bushing segment between the seals on each side of the chain. The consensus, generally, is that the most value is achieved from premium undercarriages when tractors work frequently in particularly abrasive materials. Brad Davis, a consultant with Quick Trax of Texas, suggests, however, that machine owners considering premium undercarriages assess the price/value relationship before making the investment. The company’s shop routinely works on all types of undercarriages, he says, and “from what we’ve seen, the standard undercarriage generally is the most reliable and also the most cost- efficient in terms of life expectancy and replacement costs.” “Proactive” management begins with good operating and maintenance practices, says Bruce Boebel, Komatsu America’s crawler dozer product manager. The former, he says, includes avoiding—as much as practical—high ground speeds, excessive reverse operation, track spinning, counter-rotation, and same-direction turning on large jobs. Good maintenance, says Boebel, ranges from daily shoveling out the tracks and frequently checking track tension, to periodically measuring wear and making informed decisions based on the results. Boebel reminds equipment managers, also, that machine features can assist with undercarriage management. For example, the transmission controller in some machines can be programmed to limit reverse speeds; undercarriage wear is at its worst when the machine reverses, and excessive speed accelerates the process. Telematics systems can be helpful, as well, says Boebel. Because these systems report working time versus idle time, periodic undercarriage measurement can be scheduled based on actual working hours (not hour-meter readings). And if the system also reports forward-travel time versus reverse-travel time, and if reverse operation seems excessive, then perhaps the operation needs revamping to ease stress on the undercarriage, or maybe operators need more training. Track basics Most crawler dozers leave the factory with SALT (sealed and lubricated track) chains, which use pins having an internal reservoir of oil that flows through a radial hole in the pin and into the annular space between the pin and bushing. For his next album, he finally exploited his reputation as a live performer by releasing the five-LP/three-CD box set Bruce Springsteen & the E Street Band Live/1975-85 (November 1986), which topped the charts, was certified platinum 13 times, and spawned a Top Ten hit in a cover of Edwin Starr's 'War.' Bruce Springsteen’s legacy didn’t need much burnishing. Tenth Avenue Freeze-Out (Springsteen on Broadway) 7:56: 17 Tougher Than the Rest (Introduction) [Springsteen on Broadway]. Somehow he manages to top himself continually. This show is beyond any adequate words to describe or review. Bruce springsteen out in the street itunes top.
0 Comments
Leave a Reply. |