T100378 Pin Swing cylinder rod end, 310C Fits John Deere BACKHOE PINS & BUSHINGSOne New Aftermarket Replacement Swing Cylinder Rod End Pin Fits John Deere (Fits JD) 310C Backhoe This aftermarket replacement pin connects the swing cylinder rod to the swing tower on the Fits John Deere 310C backhoe loader. It is a critical pivot component in the backhoe's hydraulic swing system, allowing the boom to rotate left and right. A worn or damaged swing cylinder rod end pin can cause slop in the boom swing, accelerated bushing wear, and