Hydraulic pressure dropping or slow cycle times on your PC40-7? A worn PVK-2B-505 pump lets the rotating group bypass internally, starving every circuit. The PVK-2B-505 is a Nachi main pump used on PC40-7, PC50UU, PC55 excavators. RITO rebuilds this main pump to OEM clearances so your machine's dig force and speed come back from the first hour.
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