{"product_id":"case-1221e-wheel-loader-service-manual-workshop-guide","title":"Case 1221E Wheel Loader Service Manual Workshop Guide","description":"Format : PDF\u003cbr\u003eSUPPLIED AS DOWNLOADABLE LINK\u003cbr\u003e\u003cbr\u003eManual Included:\u003cbr\u003e•\u003cbr\u003eService Manual:\u003cbr\u003e534 pages\u003cbr\u003eSpecifications:\u003cbr\u003e•\u003cbr\u003eBrand:\u003cbr\u003eCase\u003cbr\u003e•\u003cbr\u003eModel:\u003cbr\u003e1221E Tier 3\u003cbr\u003e•\u003cbr\u003eType:\u003cbr\u003eLoader\u003cbr\u003e•\u003cbr\u003eManuals:\u003cbr\u003eService Manual\u003cbr\u003e•\u003cbr\u003ePublication Numbers:\u003cbr\u003e87728465 (Mar 2008)\u003cbr\u003e•\u003cbr\u003eLanguage:\u003cbr\u003eEnglish\u003cbr\u003e•\u003cbr\u003eFormat:\u003cbr\u003ePDF\u003cbr\u003e\u003cbr\u003eDescription\u003cbr\u003eTable of Contents\u003cbr\u003eGeneral\u003cbr\u003eEngine\u003cbr\u003ePower Train System\u003cbr\u003eBrakes\u003cbr\u003eSteering\u003cbr\u003eWork Equipment\u003cbr\u003eElectrical System\u003cbr\u003eManual Extract: BRAKE PUMP\u003cbr\u003eThe pumping operation of this unit (each cartridge) is obtained by providing a fixed interior cam surface and a rotating inner member (rotor) containing vanes which held in contact with the inner cam surface. As the rotor is rotated by the drive shaft, the vanes are urged outward against the outward sloping cam surface, forming a cavity at the inlet ports of the port plates. Atmospheric pressure and suction created by the expanding cavity between the rotating vanes fill the inlet cavity with fluid.\u003cbr\u003eAs the rotation continues and the vanes that had previously moved outward and now have fluid trapped between them and the port plates, follow the inward slope of the cam which decreases the cavity containing the trapped fluid and discharges the fluid at system pressure through the pressure port openings in the port plates.\u003cbr\u003eThe rotating portion of the unitized cartridges feature the use of pressure actuated vanes which are urged against the cam ring by pins located in the bottom of each rotor vane slot. Initial force to bring the vanes in contact with the cam ring contour during start up is provided by centrifugal force. When pumping operation starts and pressure is established, fluid under pressure fills the pin cavity through the feed holes.\u003cbr\u003eThe feed holes open to the pressure port twice every revolution. All other times they are closed off by the port plate. This pressure under the pin provides the force necessary to keep the vanes in contact with the cam contour.","brand":"Uploader","offers":[{"title":"Default Title","offer_id":53600941277515,"sku":null,"price":57.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2519\/4315\/files\/1-106_7a5f7e6d-60f5-4ad9-80e3-231fe2146df8.png?v=1760438153","url":"https:\/\/manualbull.com\/products\/case-1221e-wheel-loader-service-manual-workshop-guide","provider":"ManualBull","version":"1.0","type":"link"}