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work port relief set at 500 psi. <br />4. Underbody plow angle, double acting cylinder with <br />auxiliary cross port relief valve to protect cylinder. <br />5. Spinner attachment, dual compensated control. <br />6. plow lift, double acting cylinder with down side work port relief <br />set at 500 psi. <br />7. Valve Controls and Enclosure: The valve assembly shall be <br />mounted inweather-tight enclosure. The valve enclosure shall be <br />fabricated of 12-gaugesteei. Enclosureshall bedesigned to not <br />allow humidity to betrapped inside. Valveto be mounted with all <br />ports comi ng out of the bottom and hol es al I ow i ng for hose adaptor <br />fitting. Enclosurewill allow for bulkhead style cableto enter the <br />front. Valvewill be boxed in with cover.and not the base. The <br />ever shall be held to the enclosure by four heavy rubber latches. <br />All plumbing shai I be external, directly out the bottom of the valve <br />enclosure. <br />Specifieationsfor Mounting Underbody BladeAssemblies <br />It is the intent of these specifications to describe an adjustable <br />angled underbody scraper assernbly. <br />Note: In bidding this item, please include any cab controls or <br />hydraulic modificaEtions nay. <br />Each truck shall be equipped with a root model E-89 or equal <br />underbody truck scraper. <br />Hanger board shall be not less than 10" x 30 lbs. Structural channel <br />reinforced by Y2' x 8" plate and by 4" S & C 13.8# Channel the <br />entire length of hinge line. <br />Hinge shaft shall be not less than 2" OD high carbon steel. <br />Moldboard shall be 10' long, 1" x 20" heat. treated high carbon <br />steel, offset for USS punched blades. Circles shall be constructed <br />of heavy duty 1" thick solid steel. One (1) piece deslgn (no casting) <br />with four (4) independent heavy duty mounting legs of 4' S & C <br />channel 13.8# per foot. Moldboard shall be cushioned by two (2) <br />heavy duty cushion spring shock absorber assemblies. <br />Scrapers shall have dual cylinders. power reverse with two (2) 4" <br />double acting cylinders with chrome plated rods. Cylinder rods <br />clevis bosses to be 2 OD carbon steel, solid welded to the top and <br />bottom of the hanger board. Scraping angle should not be less than <br />45 degrees adjustable as desired. All moving parts shall be zerk <br />equipped. power shall be provided from central hydraulic system. <br />21 <br />