{"product_id":"hitachi-zx450-3-zx470lch-3-and-zx520lch-3-excavator-service-repair-manual-workshop-guide","title":"Hitachi ZX450-3, ZX470LCH-3 and ZX520LCH-3 Excavator Service Repair Manual Workshop Guide","description":"Format : PDF\u003cbr\u003eSUPPLIED AS DOWNLOADABLE LINK\u003cbr\u003e\u003cbr\u003eThe manual is applicable for the Hitachi\u003cbr\u003eExcavator\u003cbr\u003eModel:\u003cbr\u003eZX450-3\u003cbr\u003eZX450LC-3\u003cbr\u003eZX470H-3\u003cbr\u003eZX470LCH-3\u003cbr\u003eZX500LC-3\u003cbr\u003eZX520LCH-3\u003cbr\u003eFormat: PDF\u003cbr\u003eLanguage: English\u003cbr\u003eService Repair Manual consists of the following:\u003cbr\u003eSee description for full details\u003cbr\u003e\u003cbr\u003eDescription\u003cbr\u003eHitachi ZX450-3, ZX470LCH-3 and ZX520LCH-3 Excavator Manual\u003cbr\u003eThe manual is applicable for the Hitachi\u003cbr\u003eExcavator\u003cbr\u003eModel:\u003cbr\u003eZX450-3\u003cbr\u003eZX450LC-3\u003cbr\u003eZX470H-3\u003cbr\u003eZX470LCH-3\u003cbr\u003eZX500LC-3\u003cbr\u003eZX520LCH-3\u003cbr\u003eFormat: PDF\u003cbr\u003eLanguage: English\u003cbr\u003eService Manual consists of the following:\u003cbr\u003eFor Model ZX450-3, ZX470LCH-3, ZX520LCH-3 and others as mentioned above:\u003cbr\u003eService Manual (Troubleshooting) Vol. No. TO1J1-E : 586 Pages\u003cbr\u003eService Manual (Operation) Vol. No. TT1J1-E : 340 Pages\u003cbr\u003eWorkshop Manual Vol. No. W1J1-E : 578 Pages\u003cbr\u003eParts Catalog Manual P1J1-1-1: 429 Pages\u003cbr\u003eOwners Instructions: 383 Pages\u003cbr\u003eCircuit diagram: 3 Pages\u003cbr\u003eSI Units (International System of Units) are used in those manual.\u003cbr\u003eManual guide composition\u003cbr\u003eHitachi Zaxis ZX450-3, ZX450LC-3, ZX470H-3, ZX470LCH-3, ZX500LC-3, ZX520LCH-3 service manual consists of the Operating, Troubleshooting and the Workshop Manual.\u003cbr\u003eInformation included in the Service Manual: Technical information needed for redelivery and delivery, operation and activation of all devices and systems, operational performance tests, and troubleshooting procedures.\u003cbr\u003eInformation included in the Workshop Manual: Technical information needed for maintenance and repair of the machine, tools and devices needed for maintenance and repair, maintenance standards, and removal \/ installation and assemble \/ disassemble procedures.\u003cbr\u003eTo avoid injury and damage refer to the service manual and be sure to use appropriate lifting techniques and equipment when lifting heavy parts.\u003cbr\u003eA ZAXIS hallmark  industry-leading hydraulic technologies, and performance no other can beat. New ZAXIS provides reliable solutions: impressive fuel economy, swift front movements, and easy operation. You'll also find Hitachi technological prowess and expertise, such as the optimized hydraulic system and engine.New ZAXIS features the key benefits of high quality, low fuel consumption, and high durability, all of which serve to ensure low running costs.New ZAXIS, which is empowered by comprehensive evolution, will realize customers visions and dreams, and pioneer your colorful future\u003cbr\u003eREGENERATIVE VALVE Extract From Manual Instructions:\u003cbr\u003eThe regenerative valves are provided in the boom lower, arm roll-in and bucket roll-in circuits. The regenerative valve increases cylinder speeds in order to cylinder hesitation, and improve machine controllability.\u003cbr\u003eOperation of Boom Regenerative Valve\u003cbr\u003e1. During boom lower operation, return oil from the cylinder bottom side enters hole on the spool and acts on the check valve.\u003cbr\u003e2. During boom lower operation, the boom is lowered faster as compared with amount of supply from the pump due to boom own weight.\u003cbr\u003e3. Therefore, pressure in the circuit between pump and boom cylinder rod decreases.\u003cbr\u003e4. When pressure in the cylinder rod side becomes lower than that in the bottom side, the check valve opens.\u003cbr\u003e5. Consequently, return oil from the cylinder bottom side flows to the rod side, is combined with pressure oil from pump 1, and is supplied to the cylinder rod side so that the regenerative operation is done.\u003cbr\u003e6. Therefore, speed of the cylinder increases.\u003cbr\u003e7. When the cylinder is moved full stroke or the load increases, pressure in the cylinder rod side circuit increases more than that in the bottom side.\u003cbr\u003e8. Consequently, the check valve is closed and regenerative operation stops.","brand":"Uploader","offers":[{"title":"Default Title","offer_id":53593333596491,"sku":null,"price":64.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2519\/4315\/files\/1-49_7764c547-08e8-4193-afb1-96165c6f8426.png?v=1760374994","url":"https:\/\/manualbull.com\/products\/hitachi-zx450-3-zx470lch-3-and-zx520lch-3-excavator-service-repair-manual-workshop-guide","provider":"ManualBull","version":"1.0","type":"link"}