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> Caterpillar 623B self elevating scraper doing cut and fill to prepare land for development between Phoenix and Tucson, Arizona. Scraper filled its bowl doing cut and raised bowl to travel. It has now lowered bowl and its ejector is pushing the soil load out the front of lowered bowl to dump the load. November, 2006.
> Caterpillar 623B self elevating scraper doing cut and fill to prepare land for development between Phoenix and Tucson, Arizona. Scraper has filled its bowl doing cut and is traveling with bowl raised to fill area to dump its bowl. November, 2006.
> Caterpillar 623B self elevating scraper doing cut and fill to prepare land for development between Phoenix and Tucson, Arizona. Scraper has filled its bowl doing cut and is traveling with bowl raised to fill area to dump its bowl. November, 2006.
> Earthmoving construction: Bowl of Caterpillar motor scraper. The horizontal cutting edge/blade at lower center, at bottom of lighter area is the front edge of the bowl/pan. The two pistons just right of center raise and lower the bowl and load of soil it carries. The apron at center of photo serves as a vertically moveable front to the bowl. It is rotated into raised position, as shown here, to allow loading and dumping and lowered for travel, to keep load in bowl. The soil/ground shows in the narrow gap between the blade and the apron. The heavy mesh in upper center is spill guard at rear of bowl to prevent overflow of heaped soil when bowl is full. Machine depends on its own power (plus push on its rear push block) from a bull dozer to scrape earth into its pan as it moves along. New Ann Arbor High School, Michigan 2006
> Earthmoving construction: Bowl of Caterpillar motor scraper, with scraper facing from left to right. The cutting edge/blade goes from lower left to upper right, and the bottom of the apron is just to right of blade. The apron is the separately controlled front of bowl, raised by counter-clock wise rotation and lowered by clockwise rotation, using the yellow almost bar on right of photo. The piston on far right adjusts elevation of bowl's cutting edge. At upper left is the ejector, which moves forward against the earth load to unload scraper and retreats to rear during loading. New Ann Arbor High School, Michigan 2006
> Earthmoving construction: Bowl of Caterpillar motor scraper. The cutting edge/blade is left center, with bolt holes at regular intervals. It is connected to front bottom of bowl/pan. The right half of photo is the apron, which serves as a vertically moveable front to the bowl. It is raised to allow loading and dumping and lowered for travel, to keep load in bowl. The soil/ground shows in the narrow gap between the blade and the apron. Note that this is not self-loading. Machine depends on its own power plus push from a bull dozer, typically, to scrape earth into its pan as it moves along. New Ann Arbor High School, Michigan 2006
> Earthmoving construction: Caterpillar 613D motor scraper, 75,000 pound payload, 31 CY heaped. Note that this is not self-loading. Machine depends on its own power plus push from a bull dozer, typically, to scrape earth into its pan. New Ann Arbor High School, Michigan 2006
Caterpillar 623B self elevating scraper doing cut and fill to prepare land for development between Phoenix and Tucson, Arizona. Scraper filled its bowl doing cut and raised bowl to travel. It has now lowered bowl and its ejector is pushing the soil load out the front of lowered bowl to dump the load. November, 2006.
> Caterpillar 623B self elevating scraper doing cut and fill to prepare land for development between Phoenix and Tucson, Arizona. Scraper filled its bowl doing cut and raised bowl to travel. It has now lowered bowl and its ejector is pushing the soil load out the front of lowered bowl to dump the load. November, 2006.
Caterpillar 623B self elevating scraper doing cut and fill to prepare land for development between Phoenix and Tucson, Arizona. Scraper filled its bowl doing cut and raised bowl to travel. It has now lowered bowl and its ejector is pushing the soil load out the front of lowered bowl to dump the load. November, 2006.
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