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現(xiàn)代R80-7型液壓挖掘機配置洋馬4TNV98型4沖程柴油發(fā)動機,額定功率達(dá)到44.1 kW,這意味著該機有足夠的功率儲備來進(jìn)行快速有效的工作。采用經(jīng)久耐用的塑料制成的空氣濾清器,延長了維修保養(yǎng)的間隔時間。為了保護(hù)加注系統(tǒng),采用了大容量的燃油過濾器和透明的油水
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2-1 GROUP 1 HYDRAULIC PUMP 1. GENERAL This is a variable displacement double-piston pump for discharge with equal displacements from one cylinder block. This pump is so compact as to appear a single pump though this is actually a double pump. Because this pump has one swash plate, the tilting angle is the same for two pumps. Tilting of the pump changes in response to the total pressure of P1 +
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