The real load carrying, however, lies with the six Michelin radial tires. Bolted to that are a four-link, live-axle rear suspension on suitably enormous hydraulic pistons and a front suspension that is essentially two hydraulic Parthenon-pillar-sized cylinders. The 797's basic structure is nine massive castings that make up its welded chassis.
Earth mover truck driver#
After all, mines aren't usually anywhere near civilization, so when Cat delivers a new 797, it arrives in pieces aboard 12 semis, which is to say, "some assembly required." Throw in driver retraining and a fuel depot that can fill the 797's 850- or optional 1800-gallon tank, and the commitment is obvious. The mining roads they operate on, for instance, must be three times the width of the widest truck running on them, and the service shops often need enlarging and reequipping. PLANET R-RANDY LORENTZEN | Car and Driverīeyond the 797's cost of $3.4 million, mine operators need to make serious infrastructure changes to accommodate it. When shovels grow again, so will the trucks.
And 400 tons is roughly the weight of 120 Ford Excursions. So the 797 carries a nominal load rating of 360 tons, but it's capable of accepting 400 tons. Now shovels are in the 90-to-100-ton range, and efficient mine owners need trucks that swallow 360 to 400 tons. When the world's biggest shovels were grabbing the planet in 60-ton scoops, the trucks built to haul stuff away were rated at four shovelsful. The 797 is this big because the machines built to tear open the Earth have grown ever larger. And with 12,170 pound-feet of torque available from the 117-liter, V-24, quad-turbo diesel, either 797 could rip Madison Square Garden off its foundation and tow it across Manhattan and into the East River.
But most gym floors aren't reinforced to withstand their 560,000-pound weight when empty, much less the 1,280,000-pound total when burdened with 360 tons of rocks and dirt. At 30 feet wide, park the left side even with that basket and the right side will be eight feet past the three-point line. Nose the front end of one up to an NBA backboard, and the rear will stick out eight inches past half-court (that's 47 feet 8 inches). They stand 23 feet 9 inches tall when the dump bodies are down, and 49 feet 3 inches when they're tilted up, which means they dwarf the 240-ton 793C that used to be Cat's biggest truck.
Equipment mentioned in paragraphs (a) (4) and (5) of this section, and manufactured before January 1, 1972, which is used by any employer after that date, shall meet the applicable rules prescribed herein not later than June 30, 1973.
Equipment mentioned in paragraph (a)(4) and (5) of this section, and manufactured after January 1, 1972, which is used by any employer after that date, shall comply with the applicable rules prescribed therein concerning brakes and fenders.
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